Lincoln Corsair Manuals

Lincoln Corsair: Front Seats / Diagnosis and Testing - Front Seats

Lincoln Corsair 2020-2024 Service Manual / Body and Paint / Body and Paint / Front Seats / Diagnosis and Testing - Front Seats

Diagnostic Trouble Code (DTC) Chart

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


  Diagnostic Trouble Code Chart


Module   DTC Description Action
  DDM B1C03:23 Memory #1 Switch:Signal Stuck Low   GO to Pinpoint Test G
  DDM B1C04:23 Memory #2 Switch:Signal Stuck Low   GO to Pinpoint Test G
  DDM B1C05:23 Memory #3 Switch:Signal Stuck Low   GO to Pinpoint Test G
  DSM B1067:24 Lumbar In Switch:Signal Stuck High   GO to Pinpoint Test AQ
  DSM B1068:24 Lumbar Out Switch:Signal Stuck High   GO to Pinpoint Test AQ
  DSM B1087:83 LIN Bus "A":Value of Signal Protection Calculation Incorrect   GO to Pinpoint Test AT
  DSM B1087:87 LIN Bus "A":Missing Message   GO to Pinpoint Test AT
  DSM B14C3:24 Seat Height Rear Down Switch:Signal Stuck High   GO to Pinpoint Test AQ
  DSM B14C4:24 Seat Height Rear Up Switch:Signal Stuck High   GO to Pinpoint Test AQ
  DSM B14CE:11 Seat Horizontal Motor Output:Circuit Short To Ground   GO to Pinpoint Test F
  DSM B14CE:12 Seat Horizontal Motor Output:Circuit Short To Battery   GO to Pinpoint Test F
  DSM B14CE:13 Seat Horizontal Motor Output:Circuit Open   GO to Pinpoint Test F
  DSM B14CF:11 Seat Recline Motor Output:Circuit Short To Ground   GO to Pinpoint Test F
  DSM B14CF:12 Seat Recline Motor Output:Circuit Short To Battery   GO to Pinpoint Test F
  DSM B14CF:13 Seat Recline Motor Output:Circuit Open   GO to Pinpoint Test F
  DSM B14D0:11 Seat Height Front/Tilt Motor Output:Circuit Short To Ground   GO to Pinpoint Test F
  DSM B14D0:12 Seat Height Front/Tilt Motor Output:Circuit Short To Battery   GO to Pinpoint Test F
  DSM B14D0:13 Seat Height Front/Tilt Motor Output:Circuit Open   GO to Pinpoint Test F
  DSM B14D2:11 Seat Height Rear Motor Output:Circuit Short To Ground   GO to Pinpoint Test F
  DSM B14D2:12 Seat Height Rear Motor Output:Circuit Short To Battery   GO to Pinpoint Test F
  DSM B14D2:13 Seat Height Rear Motor Output:Circuit Open   GO to Pinpoint Test F
  DSM B151F:11 Left Cushion Motor Output:Circuit Short To Ground   GO to Pinpoint Test D
  DSM B151F:12 Left Cushion Motor Output:Circuit Short To Battery   GO to Pinpoint Test D
  DSM B151F:13 Left Cushion Motor Output:Circuit Open   GO to Pinpoint Test D
  DSM B1520:11 Right Cushion Motor Output:Circuit Short To Ground   GO to Pinpoint Test D
  DSM B1520:12 Right Cushion Motor Output:Circuit Short To Battery   GO to Pinpoint Test D
  DSM B1520:13 Right Cushion Motor Output:Circuit Open   GO to Pinpoint Test D
  DSM B1522:11 Lumbar Motor Output:Circuit Short To Ground   GO to Pinpoint Test B
  DSM B1522:12 Lumbar Motor Output:Circuit Short To Battery   GO to Pinpoint Test B
  DSM B1522:13 Lumbar Motor Output:Circuit Open   GO to Pinpoint Test B
  DSM B1527:24 Left Cushion Fore Switch:Signal Stuck High   GO to Pinpoint Test AQ
  DSM B1528:24 Left Cushion Aft Switch:Signal Stuck High   GO to Pinpoint Test AQ
  DSM B1529:24 Right Cushion Fore Switch:Signal Stuck High   GO to Pinpoint Test AQ
  DSM B152A:24 Right Cushion Aft Switch:Signal Stuck High   GO to Pinpoint Test AQ
  DSM B1B96:24 Seat Slide Forward Switch:Signal Stuck High   GO to Pinpoint Test AQ
  DSM B1B97:24 Seat Slide Backward Switch:Signal Stuck High   GO to Pinpoint Test AQ
  DSM B1B98:24 Seat Tilt Up Switch:Signal Stuck High   GO to Pinpoint Test AQ
  DSM B1B99:24 Seat Tilt Down Switch:Signal Stuck High   GO to Pinpoint Test AQ
  DSM B1C00:24 Seat Recline Up Switch:Signal Stuck High   GO to Pinpoint Test AQ
  DSM B1C01:24 Seat Recline Down Switch:Signal Stuck High   GO to Pinpoint Test AQ
  DSM U0100:00 Lost Communication With ECM/PCM "A":No Sub Type Information   GO to Pinpoint Test W
  DSM U0140:00 Lost Communication With Body Control Module:No Sub Type Information   GO to Pinpoint Test V
  DSM U0199:00 Lost Communication With "Door Control Module A":No Sub Type Information   GO to Pinpoint Test AG
  DSM U0253:00 Lost Communication With Accessory Protocol Interface Module:No Sub Type Information   GO to Pinpoint Test AH
  DSM U2013:24 Switch Pack:Signal Stuck High   GO to Pinpoint Test AQ
  DSM U2100:00 Initial Configuration Not Complete:No Sub Type Information   GO to Pinpoint Test AJ
  DSM U3000:49 Control Module:Internal Electronic Failure   GO to Pinpoint Test AK
  DSM U3500:17 Control Module Input Power "A" Circuit Range/Performance:Circuit Voltage Above Threshold   GO to Pinpoint Test AI
  HVAC B1034:11 Left Front Seat Heater Element:Circuit Short To Ground   GO to Pinpoint Test N
  HVAC B1034:15 Left Front Seat Heater Element:Circuit Short To Battery or Open   GO to Pinpoint Test N
  HVAC B1036:11 Right Front Seat Heater Element:Circuit Short To Ground   GO to Pinpoint Test O
  HVAC B1036:15 Right Front Seat Heater Element:Circuit Short To Battery Or Open   GO to Pinpoint Test O
  HVAC B1038:11 Left Front Seat Heater Sensor:Circuit Short To Ground   GO to Pinpoint Test N
  HVAC B1038:15 Left Front Seat Heater Sensor:Circuit Short To Battery Or Open   GO to Pinpoint Test N
  HVAC B103A:11 Right Front Seat Heater Sensor:Circuit Short To Ground   GO to Pinpoint Test O
  HVAC B103A:15 Right Front Seat Heater Sensor:Circuit Short To Battery Or Open   GO to Pinpoint Test O
  SCMB B1067:24 Lumbar In Switch:Signal Stuck High   GO to Pinpoint Test AR
  SCMB B1068:24 Lumbar Out Switch:Signal Stuck High   GO to Pinpoint Test AR
  SCMB B1087:83 LIN Bus "A":Value of Signal Protection Calculation Incorrect   GO to Pinpoint Test AU
  SCMB B1087:87 LIN Bus "A":Missing Message   GO to Pinpoint Test AU
  SCMB B14C3:24 Seat Height Rear Down Switch:Signal Stuck High   GO to Pinpoint Test AR
  SCMB B14C4:24 Seat Height Rear Up Switch:Signal Stuck High   GO to Pinpoint Test AR
  SCMB B14CE:11 Seat Horizontal Motor Output:Circuit Short To Ground   GO to Pinpoint Test A
  SCMB B14CE:12 Seat Horizontal Motor Output:Circuit Short To Battery   GO to Pinpoint Test A
  SCMB B14CE:13 Seat Horizontal Motor Output:Circuit Open   GO to Pinpoint Test A
  SCMB B14CF:11 Seat Recline Motor Output:Circuit Short To Ground   GO to Pinpoint Test A
  SCMB B14CF:12 Seat Recline Motor Output:Circuit Short To Battery   GO to Pinpoint Test A
  SCMB B14CF:13 Seat Recline Motor Output:Circuit Open   GO to Pinpoint Test A
  SCMB B14D0:11 Seat Height Front/Tilt Motor Output:Circuit Short To Ground   GO to Pinpoint Test A
  SCMB B14D0:12 Seat Height Front/Tilt Motor Output:Circuit Short To Battery   GO to Pinpoint Test A
  SCMB B14D0:13 Seat Height Front/Tilt Motor Output:Circuit Open   GO to Pinpoint Test A
  SCMB B14D2:11 Seat Height Rear Motor Output:Circuit Short To Ground   GO to Pinpoint Test A
  SCMB B14D2:12 Seat Height Rear Motor Output:Circuit Short To Battery   GO to Pinpoint Test A
  SCMB B14D2:13 Seat Height Rear Motor Output:Circuit Open   GO to Pinpoint Test A
  SCMB B151F:11 Left Cushion Motor Output:Circuit Short To Ground   GO to Pinpoint Test E
  SCMB B151F:12 Left Cushion Motor Output:Circuit Short To Battery   GO to Pinpoint Test E
  SCMB B151F:13 Left Cushion Motor Output:Circuit Open   GO to Pinpoint Test E
  SCMB B1520:11 Right Cushion Motor Output:Circuit Short To Ground   GO to Pinpoint Test E
  SCMB B1520:12 Right Cushion Motor Output:Circuit Short To Battery   GO to Pinpoint Test E
  SCMB B1520:13 Right Cushion Motor Output:Circuit Open   GO to Pinpoint Test E
  SCMB B1522:11 Lumbar Motor Output:Circuit Short To Ground   GO to Pinpoint Test C
  SCMB B1522:12 Lumbar Motor Output:Circuit Short To Battery   GO to Pinpoint Test C
  SCMB B1522:13 Lumbar Motor Output:Circuit Open   GO to Pinpoint Test C
  SCMB B1527:24 Left Cushion Fore Switch:Signal Stuck High   GO to Pinpoint Test AR
  SCMB B1528:24 Left Cushion Aft Switch:Signal Stuck High   GO to Pinpoint Test AR
  SCMB B1529:24 Right Cushion Fore Switch:Signal Stuck High   GO to Pinpoint Test AR
  SCMB B152A:24 Right Cushion Aft Switch:Signal Stuck High   GO to Pinpoint Test AR
  SCMB B1B96:24 Seat Slide Forward Switch:Signal Stuck High   GO to Pinpoint Test AR
  SCMB B1B97:24 Seat Slide Backward Switch:Signal Stuck High   GO to Pinpoint Test AR
  SCMB B1B98:24 Seat Tilt Up Switch:Signal Stuck High   GO to Pinpoint Test AR
  SCMB B1B99:24 Seat Tilt Down Switch:Signal Stuck High   GO to Pinpoint Test AR
  SCMB B1C00:24 Seat Recline Up Switch:Signal Stuck High   GO to Pinpoint Test AR
  SCMB B1C01:24 Seat Recline Down Switch:Signal Stuck High   GO to Pinpoint Test AR
  SCMB U0100:00 Lost Communication With ECM/PCM "A":No Sub Type Information   GO to Pinpoint Test W
  SCMB U0140:00 Lost Communication With Body Control Module:No Sub Type Information   GO to Pinpoint Test V
  SCMB U0253:00 Lost Communication With Accessory Protocol Interface Module:No Sub Type Information   GO to Pinpoint Test AH
  SCMB U2013:24 Switch Pack:Signal Stuck High   GO to Pinpoint Test AR
  SCMB U2100:00 Initial Configuration Not Complete:No Sub Type Information   GO to Pinpoint Test AJ
  SCMB U3000:49 Control Module:Internal Electronic Failure   GO to Pinpoint Test AS
  SCMB U3500:17 Control Module Input Power "A" Circuit Range/Performance:Circuit Voltage Above Threshold   GO to Pinpoint Test AI
  SCME B1151:4B Passenger Seat Cushion:Over Temperature   GO to Pinpoint Test R
  SCME B1153:4B Driver Seat Cushion:Over Temperature   GO to Pinpoint Test Q
  SCME B1208:11 Driver Seat Cushion Temperature Sensor:Circuit Short To Ground   GO to Pinpoint Test Q
  SCME B1208:15 Driver Seat Cushion Temperature Sensor:Circuit Short To Battery Or Open   GO to Pinpoint Test Q
  SCME B1208:2A Driver Seat Cushion Temperature Sensor:Stuck in Range   GO to Pinpoint Test Q
  SCME B120A:11 Passenger Seat Cushion Temperature Sensor:Circuit Short To Ground   GO to Pinpoint Test R
  SCME B120A:15 Passenger Seat Cushion Temperature Sensor:Circuit Short To Battery Or Open   GO to Pinpoint Test R
  SCME B120A:2A Passenger Seat Cushion Temperature Sensor:Stuck in Range   GO to Pinpoint Test R
  SCME B14B9:11 Driver Seat Cushion Thermal Electric Device: Circuit Short To Ground   GO to Pinpoint Test Q
  SCME B14B9:12 Driver Seat Cushion Thermal Electric Device: Circuit Short To Battery   GO to Pinpoint Test Q
  SCME B14B9:13 Driver Seat Cushion Thermal Electric Device: Circuit Open   GO to Pinpoint Test Q
  SCME B14BB:11 Passenger Seat Cushion Thermal Electric Device: Circuit Short To Ground   GO to Pinpoint Test R
  SCME B14BB:12 Passenger Seat Cushion Thermal Electric Device: Circuit Short To Battery   GO to Pinpoint Test R
  SCME B14BB:13 Passenger Seat Cushion Thermal Electric Device: Circuit Open   GO to Pinpoint Test R
  SCME B14BD:11 Driver Seat Cushion Blower:Circuit Short To Ground   GO to Pinpoint Test T
  SCME B14BD:13 Driver Seat Cushion Blower:Circuit Open   GO to Pinpoint Test T
  SCME B14C0:11 Passenger Seat Cushion Blower:Circuit Short To Ground   GO to Pinpoint Test U
  SCME B14C0:13 Passenger Seat Cushion Blower:Circuit Open   GO to Pinpoint Test U
  SCME B1562:11 Driver Seat Back Blower Speed:Circuit Short To Ground   GO to Pinpoint Test T
  SCME B1562:12 Driver Seat Back Blower Speed:Circuit Short To Battery   GO to Pinpoint Test T
  SCME B1563:11 Passenger Seat Back Blower Speed:Circuit Short To Ground   GO to Pinpoint Test U
  SCME B1563:12 Passenger Seat Back Blower Speed:Circuit Short To Battery   GO to Pinpoint Test U
  SCME B1564:11 Driver Seat Cushion Blower Speed:Circuit Short To Ground   GO to Pinpoint Test T
  SCME B1564:12 Driver Seat Cushion Blower Speed:Circuit Short To Battery   GO to Pinpoint Test T
  SCME B1565:11 Passenger Seat Cushion Blower Speed:Circuit Short To Ground   GO to Pinpoint Test U
  SCME B1565:12 Passenger Seat Cushion Blower Speed:Circuit Short To Battery   GO to Pinpoint Test U
  SCME U0140:00 Lost Communication With Body Control Module:No Sub Type Information   GO to Pinpoint Test X
  SCME U0257:00 Lost Communication with Front Controls / Display Interface Module:No Sub Type Information   GO to Pinpoint Test Y
  SCME U1000:00 Solid State Driver Protection Active -Driver Disabled:No Sub Type Information   GO to Pinpoint Test AL
  SCME U2100:00 Initial Configuration Not Complete:No Sub Type Information   GO to Pinpoint Test AM
  SCME U3000:49 Control Module:Internal Electronic Failure   GO to Pinpoint Test AK
  SCMG B146F:00 Back Bladder System Electropneumatic Failure:No Sub Type Information   GO to Pinpoint Test K
  SCMG B146F:04 Back Bladder System Electropneumatic Failure:System Internal Failures   GO to Pinpoint Test K
  SCMG B1470:00 Cushion Bladder System Electropneumatic Failure:No Sub Type Information   GO to Pinpoint Test K
  SCMG B1470:04 Cushion Bladder System Electropneumatic Failure:System Internal Failures   GO to Pinpoint Test K
  SCMG B1473:11 Pump Driver:Circuit Short To Ground   GO to Pinpoint Test K
  SCMG U0140:00 Lost Communication With Body Control Module:No Sub Type Information   GO to Pinpoint Test Z
  SCMG U0208:00 Lost Communication With "Seat Control Module A":No Sub Type Information   GO to Pinpoint Test AA
  SCMG U0253:00 Lost Communication With Accessory Protocol Interface Module:No Sub Type Information   GO to Pinpoint Test AC
  SCMG U0256:00 Lost Communication With Front Controls Interface Module "A":No Sub Type Information   GO to Pinpoint Test AD
  SCMG U0422:00 Invalid Data Received From Body Control Module:No Sub Type Information   GO to Pinpoint Test AE
  SCMG U0455:00 Invalid Data Received From Restraints Occupant Classification System Module:No Sub Type Information   GO to Pinpoint Test AF
  SCMG U1000:00 Solid State Driver Protection Active -Driver Disabled:No Sub Type Information   GO to Pinpoint Test AN
  SCMG U2100:00 Initial Configuration Not Complete:No Sub Type Information   GO to Pinpoint Test AO
  SCMG U3000:49 Control Module:Internal Electronic Failure   GO to Pinpoint Test AP
  SCMH B146F:00 Back Bladder System Electropneumatic Failure:No Sub Type Information   GO to Pinpoint Test L
  SCMH B146F:04 Back Bladder System Electropneumatic Failure:System Internal Failures   GO to Pinpoint Test L
  SCMH B1470:00 Cushion Bladder System Electropneumatic Failure:No Sub Type Information   GO to Pinpoint Test L
  SCMH B1470:04 Cushion Bladder System Electropneumatic Failure:System Internal Failures   GO to Pinpoint Test L
  SCMH B1473:11 Pump Driver:Circuit Short To Ground   GO to Pinpoint Test L
  SCMH U0140:00 Lost Communication With Body Control Module:No Sub Type Information   GO to Pinpoint Test Z
  SCMH U0208:00 Lost Communication With "Seat Control Module A":No Sub Type Information   GO to Pinpoint Test AA
  SCMH U024B:00 Lost Communication with Seat Control Module "G":No Sub Type Information   GO to Pinpoint Test AB
  SCMH U0253:00 Lost Communication With Accessory Protocol Interface Module:No Sub Type Information   GO to Pinpoint Test AC
  SCMH U0256:00 Lost Communication With Front Controls Interface Module "A":No Sub Type Information   GO to Pinpoint Test AD
  SCMH U0422:00 Invalid Data Received From Body Control Module:No Sub Type Information   GO to Pinpoint Test AE
  SCMH U0455:00 Invalid Data Received From Restraints Occupant Classification System Module:No Sub Type Information   GO to Pinpoint Test AF
  SCMH U1000:00 Solid State Driver Protection Active -Driver Disabled:No Sub Type Information   GO to Pinpoint Test AN
  SCMH U2100:00 Initial Configuration Not Complete:No Sub Type Information   GO to Pinpoint Test AO
  SCMH U3000:49 Control Module:Internal Electronic Failure   GO to Pinpoint Test AP

Global Customer Symptom Code (GCSC) Chart

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


Symptom Action
Comfort & Entertainment > Seats > Front Driver > Cooling/Ventilation GO to Pinpoint Test S
Comfort & Entertainment > Seats > Front Driver > Cooling/Ventilation GO to Pinpoint Test T
Comfort & Entertainment > Seats > Front Driver > Massage GO to Pinpoint Test K
Comfort & Entertainment > Seats > Front Driver > Heating GO to Pinpoint Test M
Comfort & Entertainment > Seats > Front Driver > Heating GO to Pinpoint Test N
Comfort & Entertainment > Seats > Front Driver > Heating GO to Pinpoint Test P
Comfort & Entertainment > Seats > Front Driver > Heating GO to Pinpoint Test Q
Comfort & Entertainment > Seats > Front Driver > Power Function GO to Pinpoint Test B
Comfort & Entertainment > Seats > Front Driver > Power Function GO to Pinpoint Test D
Comfort & Entertainment > Seats > Front Driver > Power Function GO to Pinpoint Test F
Comfort & Entertainment > Seats > Front Driver > Power Function GO to Pinpoint Test G
Comfort & Entertainment > Seats > Front Driver > Power Function GO to Pinpoint Test H
Comfort & Entertainment > Seats > Front Driver > Power Function GO to Pinpoint Test I
Comfort & Entertainment > Seats > Front Driver > Power Function GO to Pinpoint Test J
Comfort & Entertainment > Seats > Front Passenger > Cooling/Ventilation GO to Pinpoint Test S
Comfort & Entertainment > Seats > Front Passenger > Cooling/Ventilation GO to Pinpoint Test U
Comfort & Entertainment > Seats > Front Passenger > Massage GO to Pinpoint Test L
Comfort & Entertainment > Seats > Front Passenger > Heating GO to Pinpoint Test M
Comfort & Entertainment > Seats > Front Passenger > Heating GO to Pinpoint Test O
Comfort & Entertainment > Seats > Front Passenger > Heating GO to Pinpoint Test P
Comfort & Entertainment > Seats > Front Passenger > Heating GO to Pinpoint Test R
Comfort & Entertainment > Seats > Front Passenger > Power Function GO to Pinpoint Test A
Comfort & Entertainment > Seats > Front Passenger > Power Function GO to Pinpoint Test C
Comfort & Entertainment > Seats > Front Passenger > Power Function GO to Pinpoint Test E

Symptom Chart(s)

Symptom Chart: Front Seats

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


  Symptom Chart


Condition Actions
No communication with the DDM

  • REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
No communication with the DSM

  • REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
No communication with the FCIMB

  • REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
No communication with the HVAC module

  • REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
No communication with the SCMB

  • REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
No communication with the SCME

  • REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
No communication with the SCMG

  • REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
No communication with the SCMH

  • REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
The passenger seat does not operate horizontally/vertically/recline using the seat control switch
  • GO to Pinpoint Test A
The power lumbar is inoperative — driver, without multi-contour seats
  • GO to Pinpoint Test B
The power lumbar is inoperative — passenger, without multi-contour seats
  • GO to Pinpoint Test C
The cushion extension is inoperative — driver
  • GO to Pinpoint Test D
The cushion extension is inoperative — passenger
  • GO to Pinpoint Test E
The memory seat does not operate horizontally/vertically/recline using the seat control switch
  • GO to Pinpoint Test F
The memory seat does not operate using the memory SET switch
  • GO to Pinpoint Test G
The memory seat does not move to the correct memory position
  • GO to Pinpoint Test H
The memory seat does not operate when using the RKE transmitter
  • GO to Pinpoint Test I
Easy entry/easy exit is inoperative/does not operate correctly
  • GO to Pinpoint Test J
The multi-contour seat is inoperative/does not operate correctly — driver
  • GO to Pinpoint Test K
The multi-contour seat is inoperative/does not operate correctly — passenger
  • GO to Pinpoint Test L
Both heated seats are inoperative — without heated/ventilated seats
  • GO to Pinpoint Test M
The left heated seat is inoperative — without heated/ventilated seats
  • GO to Pinpoint Test N
The right heated seat is inoperative — without heated/ventilated seats
  • GO to Pinpoint Test O
Both heated seats are inoperative — with heated/ventilated seats
  • GO to Pinpoint Test P
The left heated seat is inoperative — with heated/ventilated seats
  • GO to Pinpoint Test Q
The right heated seat is inoperative — with heated/ventilated seats
  • GO to Pinpoint Test R
Both heated/ventilated seats are inoperative
  • GO to Pinpoint Test S
The driver heated/ventilated seat is inoperative/does not operate correctly
  • GO to Pinpoint Test T
The passenger heated/ventilated seat is inoperative/does not operate correctly
  • GO to Pinpoint Test U

Pinpoint Test(s)


PINPOINT TEST A: THE PASSENGER SEAT DOES NOT OPERATE HORIZONTALLY/VERTICALLY/RECLINE USING THE SEAT CONTROL SWITCH

Refer to Wiring Diagrams Cell 120 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMB B14CE:11 Seat Horizontal Motor Output: Circuit Short To Ground If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B14CE:12 Seat Horizontal Motor Output: Circuit Short To Battery If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B14CE:13 Seat Horizontal Motor Output: Circuit Open If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B14CF:11 Seat Recline Motor Output: Circuit Short To Ground If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B14CF:12 Seat Recline Motor Output: Circuit Short To Battery If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B14CF:13 Seat Recline Motor Output: Circuit Open If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B14D0:11 Seat Height Front/Tilt Motor Output: Circuit Short To Ground If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B14D0:12 Seat Height Front/Tilt Motor Output: Circuit Short To Battery If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B14D0:13 Seat Height Front/Tilt Motor Output: Circuit Open If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B14D2:11 Seat Height Rear Motor Output: Circuit Short To Ground If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B14D2:12 Seat Height Rear Motor Output: Circuit Short To Battery If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B14D2:13 Seat Height Rear Motor Output: Circuit Open If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.

Possible Sources

  • Fuse
  • Wiring, terminals or connectors
  • Seat control switch
  • Seat track motor
  • Seat track
  • Seat backrest
  • SCMB

Visual Inspection and Pre-checks

  • Verify BJB fuse 31 (30A) is OK.

  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.

A1 RETRIEVE THE SCMB (PASSENGER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Attempt to activate the seat control switch in all directions.
  • Using a diagnostic scan tool, perform SCMB self-test. If the diagnostic scan tool does not communicate with the SCMB ,
    REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

Are any SCMB Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B14C3:24, B14C4:24, B1B96:24, B1B97:24, B1B98:24, B1B99:24, B1C00:24 or B1C01:24, GO to Pinpoint Test AR
For DTC B1087:83 or B1087:87, GO to Pinpoint Test AU
For DTC B14CE:XX, B14CF:XX, B14D0:XX or B14D2:XX, GO to A3
For all other Diagnostic Trouble Codes (DTCs), REFER to the DTC Chart in this section.
No GO to A2

A2 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)
  • While operating the seat control switch in all positions, monitor the following SCMB seat control switch Parameter Identifications (PIDs) using a diagnostic scan tool:

    • Access the  SCMB  and monitor the  SEAT_TILT_DWN  PID

    • Access the  SCMB  and monitor the  SEAT_TILT_UP  PID

    • Access the  SCMB  and monitor the  SEAT_RECL_DWN  PID

    • Access the  SCMB  and monitor the  SEAT_RECL_UP  PID

    • Access the  SCMB  and monitor the  SEAT_HGT_DWN  PID

    • Access the  SCMB  and monitor the  SEAT_HGT_UP  PID

    • Access the  SCMB  and monitor the  SEAT_BCK_SW  PID

    • Access the  SCMB  and monitor the  SEAT_FW_SW  PID


Do the PID states agree with the switch positions?
Yes GO to A3
No INSTALL a new seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).

A3 VERIFY THE SEAT OPERATION
  • Using the seat control switch, attempt to operate the seat in the following directions:
    • Front height up and down
    • Rear height up and down
    • Horizontal forward and backward
    • Recline forward and backward

Does the passenger seat operate correctly?
Yes The condition is intermittent. CHECK for causes of an intermittent concern, particularly the pins and terminals of electrical connectors that were disconnected. Do not install any new components at this time. Components should only be installed when directed to do so in the pinpoint test. REPAIR any intermittent wiring, terminal or connector concerns found.
No If no seat movement occurs, GO to A30
If no front vertical seat movement occurs, GO to A4
If no rear vertical seat movement occurs, GO to A10
If no horizontal seat movement occurs, GO to A16
If no recline seat movement occurs, GO to A22

A4 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C3137.
  • Disconnect: SCMB C342B.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-8   Ground
      C342B-16   Ground

Is any voltage present?
Yes GO to A5
No GO to A6

A5 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Passenger Seat Front Height Motor C383.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-8   Ground
      C342B-16   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to A29
No INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to A29

A6 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-8   Ground
      C342B-16   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to A8
No GO to A7

A7 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Passenger Seat Front Height Motor C383.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-8   Ground
      C342B-16   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to A29
No REPAIR the affected circuit. GO to A29

A8 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Passenger Seat Front Height Motor C383.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-8   C383-3
      C342B-16   C383-1

Are the resistances less than 3 ohms?
Yes GO to A9
No REPAIR the affected circuit. GO to A29

A9 CHECK FOR VOLTAGE TO THE FRONT HEIGHT MOTOR

NOTICE: The following step uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250- 300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Connect: SCMB C342B.
  • Ignition ON.
  • Connect a 12-volt incandescent test light between:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C383-1   C383-3
  • NOTE: Because the seat motor electrical connector is disconnected, the SCMB may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (front height up and down) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?
Yes INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to A29
No GO to A28

A10 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C3137.
  • Disconnect: SCMB C342B.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-2   Ground
      C342B-5   Ground

Is any voltage present?
Yes GO to A11
No GO to A12

A11 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Passenger Seat Rear Height Motor C3857.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-2   Ground
      C342B-5   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to A29
No INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to A29

A12 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-2   Ground
      C342B-5   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to A14
No GO to A13

A13 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Passenger Seat Rear Height Motor C3857.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-2   Ground
      C342B-5   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to A29
No REPAIR the affected circuit. GO to A29

A14 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Passenger Seat Rear Height Motor C3857.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-2   C3857-1
      C342B-5   C3857-3

Are the resistances less than 3 ohms?
Yes GO to A15
No REPAIR the affected circuit. GO to A29

A15 CHECK FOR VOLTAGE TO THE REAR HEIGHT MOTOR

NOTICE: The following step uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250- 300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Connect: SCMB C342B.
  • Ignition ON.
  • Connect a 12-volt incandescent test light between:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3857-1   C3857-3
  • NOTE: Because the seat motor electrical connector is disconnected, the SCMB may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (rear height up and down) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?
Yes INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to A29
No GO to A28

A16 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C3137.
  • Disconnect: SCMB C342B.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-14   Ground
      C342B-15   Ground

Is any voltage present?
Yes GO to A17
No GO to A18

A17 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Passenger Seat Horizontal Motor C332.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-14   Ground
      C342B-15   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to A29
No INSTALL a new passenger seat track motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to A29

A18 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-14   Ground
      C342B-15   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to A20
No GO to A19

A19 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Passenger Seat Horizontal Motor C332.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-14   Ground
      C342B-15   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new passenger seat track motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to A29
No REPAIR the affected circuit. GO to A29

A20 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Passenger Seat Horizontal Motor C332.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-14   C332-3
      C342B-15   C332-1

Are the resistances less than 3 ohms?
Yes GO to A21
No REPAIR the affected circuit. GO to A29

A21 CHECK FOR VOLTAGE TO THE HORIZONTAL MOTOR

NOTICE: The following step uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250- 300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Connect: SCMB C342B.
  • Ignition ON.
  • Connect a 12-volt incandescent test light between:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C332-1   C332-3
  • NOTE: Because the seat motor electrical connector is disconnected, the SCMB may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (horizontal forward and backward) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?
Yes INSTALL a new passenger seat track motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to A29
No GO to A28

A22 CHECK THE RECLINER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C3137.
  • Disconnect: SCMB C342B.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-7   Ground
      C342B-4   Ground

Is any voltage present?
Yes GO to A23
No GO to A24

A23 CHECK THE FRONT RECLINER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Passenger Seat Front Recliner Motor C3189.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-7   Ground
      C342B-4   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to A29
No INSTALL a new passenger seat backrest frame.
REFER to: Front Seat Backrest (501-10A Front Seats, Removal and Installation).
GO to A29

A24 CHECK THE FRONT RECLINER MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-7   Ground
      C342B-4   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to A26
No GO to A25

A25 CHECK THE RECLINER MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Passenger Seat Recliner Motor C3189.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-7   Ground
      C342B-4   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new passenger seat backrest frame.
REFER to: Front Seat Backrest (501-10A Front Seats, Removal and Installation).
GO to A29
No REPAIR the affected circuit. GO to A29

A26 CHECK THE RECLINER MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Passenger Seat Recliner Motor C3189.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-7   C3189-1
      C342B-4   C3189-3

Are the resistances less than 3 ohms?
Yes GO to A27
No REPAIR the affected circuit. GO to A29

A27 CHECK FOR VOLTAGE TO THE RECLINER MOTOR

NOTICE: The following step uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250- 300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Connect: SCMB C342B.
  • Ignition ON.
  • Connect a 12-volt incandescent test light between:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3189-1   C3189-3
  • NOTE: Because the seat motor electrical connector is disconnected, the SCMB may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (recline forward and backward) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?
Yes INSTALL a new passenger seat backrest frame.
REFER to: Front Seat Backrest (501-10A Front Seats, Removal and Installation).
GO to A29
No GO to A28

A28 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the SCMB connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMB connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Passenger Side Airbag In-line C3137 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMB .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to A29
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to A29

A29 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Passenger Side Airbag In-line C3137.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

A30 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the SCMB connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMB connectors. Make sure they seat and latch correctly.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMB .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST B: THE POWER LUMBAR IS INOPERATIVE — DRIVER, WITHOUT MULTI-CONTOUR SEATS

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
DSM B1522:11 Lumbar Motor Output: Circuit Short To Ground If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B1522:12 Lumbar Motor Output: Circuit Short To Battery If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B1522:13 Lumbar Motor Output: Circuit Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.

Possible Sources

  • Wiring, terminals or connectors
  • Seat control switch
  • Front seat power lumbar assembly
  • DSM

  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.

B1 RETRIEVE THE DSM (DRIVER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Attempt to activate the seat control switch in all directions.
  • Using a diagnostic scan tool, perform DSM self-test. If the diagnostic scan tool does not communicate with the DSM ,
    REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

Are any DSM Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B1067:24 or B1068:24, GO to Pinpoint Test AQ
For DTC B1087:83 or B1087:87, GO to Pinpoint Test AT
For DTC B1522:11, B1522:12 or B1522:13, GO to B3
For all other Diagnostic Trouble Codes (DTCs), REFER to the DTC Chart in this section.
No GO to B2

B2 CHECK THE DSM (DRIVER FRONT SEAT MODULE) SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)
  • While operating the seat control switch , monitor the DSM seat control switch Parameter Identifications (PIDs) using a diagnostic scan tool:

    • Access the  DSM  and monitor the  LUMB_IN_SW  PID

    • Access the  DSM  and monitor the  LUMB_OUT_SW  PID


Do the PID states agree with the switch positions?
Yes GO to B3
No INSTALL a new seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).

B3 CHECK THE LUMBAR MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3136.
  • Disconnect: DSM C341D.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-9   Ground
      C341D-10   Ground

Is any voltage present?
Yes GO to B4
No GO to B5

B4 CHECK THE LUMBAR MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Driver Seat Lumbar Motor C3215.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-9   Ground
      C341D-10   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to B10
No INSTALL a new driver seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly (501-10A Front Seats, Removal and Installation).
GO to B10

B5 CHECK THE LUMBAR MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-9   Ground
      C341D-10   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to B7
No GO to B6

B6 CHECK THE LUMBAR MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Driver Seat Lumbar Motor C3215.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-9   Ground
      C341D-10   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new driver seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly (501-10A Front Seats, Removal and Installation).
GO to B10
No REPAIR the affected circuit. GO to B10

B7 CHECK THE LUMBAR MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Seat Lumbar Motor C3215.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-9   C3215-B
      C341D-10   C3215-A

Are the resistances less than 3 ohms?
Yes GO to B8
No REPAIR the affected circuit. GO to B10

B8 CHECK FOR VOLTAGE TO THE LUMBAR MOTOR

NOTICE: The following step uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250- 300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Connect: DSM C341D.
  • Ignition ON.
  • Connect a 12-volt incandescent test light between:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3215-A   C3215-B
  • NOTE: Because the lumbar motor electrical connector is disconnected, the DSM may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (forward and backward) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?
Yes INSTALL a new driver seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly (501-10A Front Seats, Removal and Installation).
GO to B10
No GO to B9

B9 CHECK THE DSM (DRIVER FRONT SEAT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-line C3136 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to B10
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to B10

B10 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Driver Side Airbag In-line C3136.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST C: THE POWER LUMBAR IS INOPERATIVE — PASSENGER, WITHOUT MULTI-CONTOUR SEATS

Refer to Wiring Diagrams Cell 120 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMB B1522:11 Lumbar Motor Output: Circuit Short To Ground If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B1522:12 Lumbar Motor Output: Circuit Short To Battery If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B1522:13 Lumbar Motor Output: Circuit Open If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.

Possible Sources

  • Wiring, terminals or connectors
  • Seat control switch
  • Front seat power lumbar assembly
  • SCMB

  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.

C1 RETRIEVE THE SCMB (PASSENGER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Attempt to activate the seat control switch in all directions.
  • Using a diagnostic scan tool, perform SCMB self-test. If the diagnostic scan tool does not communicate with the SCMB ,
    REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

Are any SCMB Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B1067:24 or B1068:24, GO to Pinpoint Test AR
For DTC B1087:83 or B1087:87, GO to Pinpoint Test AU
For DTC B1522:11, B1522:12 or B1522:13, GO to C3
For all other Diagnostic Trouble Codes (DTCs), REFER to the DTC Chart in this section.
No GO to C2

C2 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)
  • While operating the seat control switch , monitor the SCMB seat control switch Parameter Identifications (PIDs) using a diagnostic scan tool:

    • Access the  SCMB  and monitor the  LUMB_IN_SW  PID

    • Access the  SCMB  and monitor the  LUMB_OUT_SW  PID


Do the PID states agree with the switch positions?
Yes GO to C3
No INSTALL a new seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).

C3 CHECK THE LUMBAR MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C3137.
  • Disconnect: SCMB C342B.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-9   Ground
      C342B-10   Ground

Is any voltage present?
Yes GO to C4
No GO to C5

C4 CHECK THE LUMBAR MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Passenger Seat Lumbar Motor C3216.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-9   Ground
      C342B-10   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to C10
No INSTALL a new passenger seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly (501-10A Front Seats, Removal and Installation).
GO to C10

C5 CHECK THE LUMBAR MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-9   Ground
      C342B-10   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to C7
No GO to C6

C6 CHECK THE LUMBAR MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Passenger Seat Lumbar Motor C3216.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-9   Ground
      C342B-10   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new passenger seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly (501-10A Front Seats, Removal and Installation).
GO to C10
No REPAIR the affected circuit. GO to C10

C7 CHECK THE LUMBAR MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Passenger Seat Lumbar Motor C3216.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-9   C3216-A
      C342B-10   C3216-B

Are the resistances less than 3 ohms?
Yes GO to C8
No REPAIR the affected circuit. GO to C10

C8 CHECK FOR VOLTAGE TO THE LUMBAR MOTOR

NOTICE: The following step uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250- 300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Connect: SCMB C342B.
  • Ignition ON.
  • Connect a 12-volt incandescent test light between:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3216-A   C3216-B
  • NOTE: Because the lumbar motor electrical connector is disconnected, the SCMB may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (forward and backward) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?
Yes INSTALL a new passenger seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly (501-10A Front Seats, Removal and Installation).
GO to C10
No GO to C9

C9 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the SCMB connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMB connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Passenger Side Airbag In-line C3137 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMB .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to C10
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to C10

C10 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Passenger Side Airbag In-line C3137.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST D: THE CUSHION EXTENSION IS INOPERATIVE - DRIVER

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
DSM B151F:11 Left Cushion Motor Output: Circuit Short To Ground If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B151F:12 Left Cushion Motor Output: Circuit Short To Battery If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B151F:13 Left Cushion Motor Output: Circuit Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B1520:11 Right Cushion Motor Output: Circuit Short To Ground If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B1520:12 Right Cushion Motor Output: Circuit Short To Battery If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B1520:13 Right Cushion Motor Output: Circuit Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.

Possible Sources

  • Wiring, terminals or connectors
  • Seat control switch
  • Front seat cushion extension adjuster
  • DSM

  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.

D1 RETRIEVE THE DSM (DRIVER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Attempt to activate the seat control switch in all directions.
  • Using a diagnostic scan tool, perform DSM self-test. If the diagnostic scan tool does not communicate with the DSM ,
    REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

Are any DSM Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B1527:24, B1528:24, B1529:24 or B152A:24, GO to Pinpoint Test AQ
For DTC B1087:83 or B1087:87, GO to Pinpoint Test AT
For DTC B151F:11, B151F:12, B151F:13, B1520:11, B1520:12 or B1520:13, GO to D3
For all other Diagnostic Trouble Codes (DTCs), REFER to the DTC Chart in this section.
No GO to D2

D2 CHECK THE DSM (DRIVER FRONT SEAT MODULE) SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)
  • While operating the seat control switch , monitor the DSM seat control switch Parameter Identifications (PIDs) using a diagnostic scan tool:

    • Access the  DSM  and monitor the  L_CUSH_AFT_SW  PID

    • Access the  DSM  and monitor the  L_CUSH_FOR_SW  PID

    • Access the  DSM  and monitor the  R_CUSH_AFT_SW  PID

    • Access the  DSM  and monitor the  R_CUSH_FOR_SW  PID


Do the PID states agree with the switch positions?
Yes GO to D3
No INSTALL a new seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).

D3 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3136.
  • Disconnect: DSM C341E (right cushion extension) or C341D (left cushion extension).
  • Ignition ON.
  • For left cushion extension, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-1   Ground
      C341D-11   Ground
  • For right cushion extension, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-7   Ground
      C341E-17   Ground

Is any voltage present?
Yes GO to D4
No GO to D5

D4 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Driver Cushion Extension Motor C3001 (LH ) or C3002 (RH ).
  • Ignition ON.
  • For left cushion extension, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-1   Ground
      C341D-11   Ground
  • For right cushion extension, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-7   Ground
      C341E-17   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to D10
No INSTALL a new driver seat cushion extension adjuster.
REFER to: Front Seat Cushion Extension Adjuster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to D10

D5 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • For left cushion extension, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-1   Ground
      C341D-11   Ground
  • For right cushion extension, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-7   Ground
      C341E-17   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to D7
No GO to D6

D6 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Driver Cushion Extension Motor C3001 (LH ) or C3002 (RH ).
  • For left cushion extension, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-1   Ground
      C341D-11   Ground
  • For right cushion extension, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-7   Ground
      C341E-17   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new driver seat cushion extension adjuster.
REFER to: Front Seat Cushion Extension Adjuster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to D10
No REPAIR the affected circuit. GO to D10

D7 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Cushion Extension Motor C3001 (LH ) or C3002 (RH ).
  • For left cushion extension, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-1   C3001-1
      C341D-11   C3001-3
  • For right cushion extension, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-7   C3002-3
      C341E-17   C3002-1

Are the resistances less than 3 ohms?
Yes GO to D8
No REPAIR the affected circuit. GO to D10

D8 CHECK FOR VOLTAGE TO THE CUSHION EXTENSION MOTORS

NOTICE: The following step uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250- 300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Connect: DSM C341E (right cushion extension) or C341D (left cushion extension).
  • Ignition ON.
  • Connect a 12-volt incandescent test light between:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
    (Left) C3001-1   C3001-3

    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
    (Right) C3002-1   C3002-3
  • NOTE: Because the seat motor electrical connector is disconnected, the DSM may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (forward and backward) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?
Yes INSTALL a new driver seat cushion extension adjuster.
REFER to: Front Seat Cushion Extension Adjuster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to D10
No GO to D9

D9 CHECK THE DSM (DRIVER FRONT SEAT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-line C3136 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to D10
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to D10

D10 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Driver Side Airbag In-line C3136.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST E: THE CUSHION EXTENSION IS INOPERATIVE - PASSENGER

Refer to Wiring Diagrams Cell 120 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMB B151F:11 Left Cushion Motor Output: Circuit Short To Ground If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B151F:12 Left Cushion Motor Output: Circuit Short To Battery If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B151F:13 Left Cushion Motor Output: Circuit Open If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B1520:11 Right Cushion Motor Output: Circuit Short To Ground If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B1520:12 Right Cushion Motor Output: Circuit Short To Battery If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B1520:13 Right Cushion Motor Output: Circuit Open If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.

Possible Sources

  • Wiring, terminals or connectors
  • Seat control switch
  • Front seat cushion extension adjuster
  • SCMB

  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.

E1 RETRIEVE THE SCMB (PASSENGER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Attempt to activate the seat control switch in all directions.
  • Using a diagnostic scan tool, perform SCMB self-test. If the diagnostic scan tool does not communicate with the SCMB ,
    REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

Are any DSM Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B1527:24, B1528:24, B1529:24 or B152A:24, GO to Pinpoint Test AR
For DTC B1087:83 or B1087:87, GO to Pinpoint Test AU
For DTC B151F:11, B151F:12, B151F:13, B1520:11, B1520:12 or B1520:13, GO to E3
For all other Diagnostic Trouble Codes (DTCs), REFER to the DTC Chart in this section.
No GO to E2

E2 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)
  • While operating the seat control switch , monitor the SCMB seat control switch Parameter Identifications (PIDs) using a diagnostic scan tool:

    • Access the  SCMB  and monitor the  L_CUSH_AFT_SW  PID

    • Access the  SCMB  and monitor the  L_CUSH_FOR_SW  PID

    • Access the  SCMB  and monitor the  R_CUSH_AFT_SW  PID

    • Access the  SCMB  and monitor the  R_CUSH_FOR_SW  PID


Do the PID states agree with the switch positions?
Yes GO to E3
No INSTALL a new seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).

E3 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C3137.
  • Disconnect: SCMB C342D (right cushion extension) or C342B (left cushion extension).
  • Ignition ON.
  • For left cushion extension, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-1   Ground
      C342B-11   Ground
  • For right cushion extension, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342D-7   Ground
      C342D-17   Ground

Is any voltage present?
Yes GO to E4
No GO to E5

E4 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Passenger Cushion Extension Motor C3815 (LH ) or C3816 (RH ).
  • Ignition ON.
  • For left cushion extension, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-1   Ground
      C342B-11   Ground
  • For right cushion extension, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342D-7   Ground
      C342D-17   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to E10
No INSTALL a new passenger seat cushion extension adjuster.
REFER to: Front Seat Cushion Extension Adjuster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to E10

E5 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • For left cushion extension, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-1   Ground
      C342B-11   Ground
  • For right cushion extension, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342D-7   Ground
      C342D-17   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to E7
No GO to E6

E6 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Passenger Cushion Extension Motor C3815 (LH ) or C3816 (RH ).
  • For left cushion extension, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-1   Ground
      C342B-11   Ground
  • For right cushion extension, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342D-7   Ground
      C342D-17   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new passenger seat cushion extension adjuster.
REFER to: Front Seat Cushion Extension Adjuster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to E10
No REPAIR the affected circuit. GO to E10

E7 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Passenger Cushion Extension Motor C3815 (LH ) or C3816 (RH ).
  • For left cushion extension, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342B-1   C3815-1
      C342B-11   C3815-3
  • For right cushion extension, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C342D-7   C3816-3
      C342D-17   C3816-1

Are the resistances less than 3 ohms?
Yes GO to E8
No REPAIR the affected circuit. GO to E10

E8 CHECK FOR VOLTAGE TO THE THE CUSHION EXTENSION MOTOR
  • Connect: SCMB C341D (right cushion extension) or C341B (left cushion extension).
  • Ignition ON.
  • Connect a 12-volt incandescent test light between:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
    (Left) C3815-1   C3815-3

    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
    (Right) C3816-1   C3816-3
  • NOTE: Because the seat motor electrical connector is disconnected, the DSM may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (horizontal forward and backward) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?
Yes INSTALL a new passenger seat cushion extension adjuster.
REFER to: Front Seat Cushion Extension Adjuster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to E10
No GO to E9

E9 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the SCMB connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMB connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Passenger Side Airbag In-line C3137 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMB .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to E10
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to E10

E10 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Passenger Side Airbag In-line C3137.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST F: THE MEMORY SEAT DOES NOT OPERATE HORIZONTALLY/VERTICALLY/RECLINE USING THE SEAT CONTROL SWITCH

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
DSM B14CE:11 Seat Horizontal Motor Output: Circuit Short To Ground If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B14CE:12 Seat Horizontal Motor Output: Circuit Short To Battery If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B14CE:13 Seat Horizontal Motor Output: Circuit Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B14CF:11 Seat Recline Motor Output: Circuit Short To Ground If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B14CF:12 Seat Recline Motor Output: Circuit Short To Battery If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B14CF:13 Seat Recline Motor Output: Circuit Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B14D0:11 Seat Height Front/Tilt Motor Output: Circuit Short To Ground If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B14D0:12 Seat Height Front/Tilt Motor Output: Circuit Short To Battery If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B14D0:13 Seat Height Front/Tilt Motor Output: Circuit Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B14D2:11 Seat Height Rear Motor Output: Circuit Short To Ground If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B14D2:12 Seat Height Rear Motor Output: Circuit Short To Battery If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B14D2:13 Seat Height Rear Motor Output: Circuit Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.

Possible Sources

  • Fuse
  • Wiring, terminals or connectors
  • Seat control switch
  • Seat track motor
  • Seat track
  • Seat backrest
  • DSM

Visual Inspection and Pre-checks

  • Verify BJB fuse 30 (30A) is OK.

  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.

F1 RETRIEVE THE DSM (DRIVER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Attempt to activate the seat control switch in all directions.
  • Using a diagnostic scan tool, perform DSM self-test. If the diagnostic scan tool does not communicate with the DSM ,
    REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

Are any DSM Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B14C3:24, B14C4:24, B1B96:24, B1B97:24, B1B98:24, B1B99:24, B1C00:24 or B1C01:24, GO to Pinpoint Test AQ
For DTC B1087:83 or B1087:87, GO to Pinpoint Test AT
For DTC B14CE:XX, B14CF:XX, B14D0:XX or B14D2:XX, GO to F3
For all other Diagnostic Trouble Codes (DTCs), REFER to the DTC Chart in this section.
No GO to F2

F2 CHECK THE DSM (DRIVER FRONT SEAT MODULE) SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)
  • While operating the seat control switch in all positions, monitor the following DSM seat control switch Parameter Identifications (PIDs) using a diagnostic scan tool:

    • Access the  DSM  and monitor the  SEAT_TILT_DWN  PID

    • Access the  DSM  and monitor the  SEAT_TILT_UP  PID

    • Access the  DSM  and monitor the  SEAT_RECL_DWN  PID

    • Access the  DSM  and monitor the  SEAT_RECL_UP  PID

    • Access the  DSM  and monitor the  SEAT_HGT_DWN  PID

    • Access the  DSM  and monitor the  SEAT_HGT_UP  PID

    • Access the  DSM  and monitor the  SEAT_BCK_SW  PID

    • Access the  DSM  and monitor the  SEAT_FW_SW  PID


Do the PID states agree with the switch positions?
Yes GO to F3
No INSTALL a new seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).

F3 VERIFY THE SEAT OPERATION
  • Using the seat control switch, attempt to operate the seat in the following directions:
    • Front height up and down
    • Rear height up and down
    • Horizontal forward and backward
    • Recline forward and backward

Does the driver seat operate correctly?
Yes The condition is intermittent. CHECK for causes of an intermittent concern, particularly the pins and terminals of electrical connectors that were disconnected. Do not install any new components at this time. Components should only be installed when directed to do so in the pinpoint test. REPAIR any intermittent wiring, terminal or connector concerns found.
No If no seat movement occurs, GO to F30
If no front vertical seat movement occurs, GO to F4
If no rear vertical seat movement occurs, GO to F10
If no horizontal seat movement occurs, GO to F16
If no recline seat movement occurs, GO to F22

F4 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3136.
  • Disconnect: DSM C341D.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-8   Ground
      C341D-16   Ground

Is any voltage present?
Yes GO to F5
No GO to F6

F5 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Driver Seat Front Height Motor C382.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-8   Ground
      C341D-16   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to F29
No INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to F29

F6 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-8   Ground
      C341D-16   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to F8
No GO to F7

F7 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Driver Seat Front Height Motor C382.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-8   Ground
      C341D-16   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to F29
No REPAIR the affected circuit. GO to F29

F8 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Seat Front Height Motor C382.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-8   C382-1
      C341D-16   C382-3

Are the resistances less than 3 ohms?
Yes GO to F9
No REPAIR the affected circuit. GO to F29

F9 CHECK FOR VOLTAGE TO THE FRONT HEIGHT MOTOR

NOTICE: The following step uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250- 300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Connect: DSM C341D.
  • Ignition ON.
  • Connect a 12-volt incandescent test light between:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C382-1   C382-3
  • NOTE: Because the seat motor electrical connector is disconnected, the DSM may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (front height up and down) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?
Yes INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to F29
No GO to F28

F10 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3136.
  • Disconnect: DSM C341D.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-2   Ground
      C341D-5   Ground

Is any voltage present?
Yes GO to F11
No GO to F12

F11 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Driver Seat Rear Height Motor C3856.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-2   Ground
      C341D-5   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to F29
No INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to F29

F12 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-2   Ground
      C341D-5   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to F14
No GO to F13

F13 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Driver Seat Rear Height Motor C3856.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-2   Ground
      C341D-5   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to F29
No REPAIR the affected circuit. GO to F29

F14 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Seat Rear Height Motor C3856.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-2   C3856-1
      C341D-5   C3856-3

Are the resistances less than 3 ohms?
Yes GO to F15
No REPAIR the affected circuit. GO to F29

F15 CHECK FOR VOLTAGE TO THE REAR HEIGHT MOTOR

NOTICE: The following step uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250- 300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Connect: DSM C341D.
  • Ignition ON.
  • Connect a 12-volt incandescent test light between:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3856-1   C3856-3
  • NOTE: Because the seat motor electrical connector is disconnected, the DSM may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (rear height up and down) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?
Yes INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to F29
No GO to F28

F16 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3136.
  • Disconnect: DSM C341D.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-14   Ground
      C341D-15   Ground

Is any voltage present?
Yes GO to F17
No GO to F18

F17 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Driver Seat Horizontal Motor C362.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-14   Ground
      C341D-15   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to F29
No INSTALL a new driver seat track motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to F29

F18 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-14   Ground
      C341D-15   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to F20
No GO to F19

F19 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Driver Seat Horizontal Motor C362.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-14   Ground
      C341D-15   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new driver seat track motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to F29
No REPAIR the affected circuit. GO to F29

F20 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Seat Horizontal Motor C362.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-14   C362-1
      C341D-15   C362-3

Are the resistances less than 3 ohms?
Yes GO to F21
No REPAIR the affected circuit. GO to F29

F21 CHECK FOR VOLTAGE TO THE HORIZONTAL MOTOR

NOTICE: The following step uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250- 300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Connect: DSM C341D.
  • Ignition ON.
  • Connect a 12-volt incandescent test light between:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C362-1   C362-3
  • NOTE: Because the seat motor electrical connector is disconnected, the DSM may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (horizontal forward and backward) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?
Yes INSTALL a new driver seat track motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to F29
No GO to F28

F22 CHECK THE RECLINER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3136.
  • Disconnect: DSM C341D.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-7   Ground
      C341D-4   Ground

Is any voltage present?
Yes GO to F23
No GO to F24

F23 CHECK THE FRONT RECLINER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Driver Seat Front Recliner Motor C3187.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-7   Ground
      C341D-4   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to F29
No INSTALL a new driver seat backrest frame.
REFER to: Front Seat Backrest (501-10A Front Seats, Removal and Installation).
GO to F29

F24 CHECK THE FRONT RECLINER MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-7   Ground
      C341D-4   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to F26
No GO to F25

F25 CHECK THE RECLINER MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Driver Seat Recliner Motor C3187.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-7   Ground
      C341D-4   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new driver seat backrest frame.
REFER to: Front Seat Backrest (501-10A Front Seats, Removal and Installation).
GO to F29
No REPAIR the affected circuit. GO to F29

F26 CHECK THE RECLINER MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Seat Recliner Motor C3187.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-7   C3187-1
      C341D-4   C3187-3

Are the resistances less than 3 ohms?
Yes GO to F27
No REPAIR the affected circuit. GO to F29

F27 CHECK FOR VOLTAGE TO THE RECLINER MOTOR

NOTICE: The following step uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250- 300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Connect: DSM C341D.
  • Ignition ON.
  • Connect a 12-volt incandescent test light between:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3187-1   C3187-3
  • NOTE: Because the seat motor electrical connector is disconnected, the DSM may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (recline forward and backward) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?
Yes INSTALL a new driver seat backrest frame.
REFER to: Front Seat Backrest (501-10A Front Seats, Removal and Installation).
GO to F29
No GO to F28

F28 CHECK THE DSM (DRIVER FRONT SEAT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-line C3136 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to F29
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to F29

F29 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Driver Side Airbag In-line C3136.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

F30 CHECK THE DSM (DRIVER FRONT SEAT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST G: THE MEMORY SEAT DOES NOT OPERATE USING THE MEMORY SET SWITCH

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
DDM B1C03:23 Memory #1 Switch: Signal Stuck Low If a short to ground is sensed on the switch input circuit during the DDM self-test, the DTC is set. If activity is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored.
DDM B1C04:23 Memory #2 Switch: Signal Stuck Low If a short to ground is sensed on the switch input circuit during the DDM self-test, the DTC is set. If activity is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored.
DDM B1C05:23 Memory #3 Switch: Signal Stuck Low If a short to ground is sensed on the switch input circuit during the DDM self-test, the DTC is set. If activity is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored.

Possible Sources

  • Memory seat hard/soft stops not set correctly
  • Wiring, terminals or connectors
  • Memory SET control switch
  • Missing ignition status information
  • DDM

  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.

G1 CHECK THE DSM (DRIVER FRONT SEAT MODULE) IGNITION POSITION FINAL STATUS PID (PARAMETER IDENTIFICATION) STATES
  • Ignition ON.

  • Access the  DSM  and monitor the  IGN_SW_STATE  PID

  • Cycle the ignition from ON to OFF and back to ON while monitoring the PID .

Do the PID states agree?
Yes GO to G2
No To diagnose no power in run,
REFER to: Steering Wheel and Column Electrical Components (211-05 Steering Wheel and Column Electrical Components, Diagnosis and Testing).

G2 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, perform self-test on the DSM and DDM . If the diagnostic scan tool does not communicate to the DSM and/or DDM ,
    REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

Are any Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B1C03:23, B1C04:23 or B1C05:23, GO to G3
For all other Diagnostic Trouble Codes (DTCs),
REFER to: Locks, Latches and Entry Systems (501-14 Handles, Locks, Latches and Entry Systems, Diagnosis and Testing).
No GO to G3

G3 MONITOR DDM (DRIVER DOOR MODULE) PARAMETER IDENTIFICATIONS (PIDS) AND CHECK FOR CORRECT MEMORY SET SWITCH INPUTS
  • While activating the memory recall 1, 2 and 3 buttons, monitor the following DDM memory recall switch status Parameter Identifications (PIDs) using a diagnostic scan tool:

    • Access the  DDM  and monitor the  MEMORY_SW_1  PID

    • Access the  DDM  and monitor the  MEMORY_SW_2  PID

    • Access the  DDM  and monitor the  MEMORY_SW_3  PID


Do the PID values agree with the switch button positions?
Yes Using the seat control switch, OPERATE the memory seat to the full travel of each seat axis to reset the hard/soft stops. Operate the system and determine if the concern is still present. If the seat does not operate correctly in any direction, GO to Pinpoint Test F
No GO to G4

G4 CHECK THE MEMORY SET SWITCH INPUTS
  • Ignition OFF.
  • Disconnect: Driver Seat Control Switch C508.
  • Ignition ON.
  • Monitor the following DDM memory recall switch status Parameter Identifications (PIDs) using a diagnostic scan tool:

    • Access the  DDM  and monitor the  MEMORY_SW_1  PID

    • Access the  DDM  and monitor the  MEMORY_SW_2  PID

    • Access the  DDM  and monitor the  MEMORY_SW_3  PID

  • NOTE: When performing these steps, it is possible that the memory seat may move to a previously stored memory seat position. Monitor the MEMORY_SW_1 switch status PID while momentarily connecting a fused jumper wire as shown:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C508-5   Ground
  • Monitor the MEMORY_SW_2 switch status PID while momentarily connecting a fused jumper wire as shown:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C508-6   Ground
  • Monitor the MEMORY_SW_3 switch status PID while momentarily connecting a fused jumper wire as shown:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C508-7   Ground

Do the PID values change when the jumper wire is connected?
Yes INSTALL a new driver seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
No GO to G5

G5 CHECK THE MEMORY SET CIRCUITS FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: DDM C501A.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C508-5   Ground
      C508-6   Ground
      C508-7   Ground

Is any voltage present?
Yes REPAIR the affected circuit.
No GO to G6

G6 CHECK THE MEMORY SET SWITCH CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C508-5   Ground
      C508-6   Ground
      C508-7   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to G7
No REPAIR the affected circuit.

G7 CHECK THE MEMORY SET SWITCH CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C508-5   C501A-15
      C508-6   C501A-16
      C508-7   C501A-17

Are the resistances less than 3 ohms?
Yes GO to G8
No REPAIR the affected circuit.

G8 CHECK THE DDM (DRIVER DOOR MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DDM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DDM connectors. Make sure they seat and latch correctly.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new DDM .
REFER to: Driver Door Module (DDM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST H: THE MEMORY SEAT DOES NOT MOVE TO THE CORRECT MEMORY POSITION

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Using the seat control switch, OPERATE the memory seat to the full travel of each seat axis to reset the hard/soft stops. Operate the system and determine if the concern is still present. If the seat does not operate correctly in any direction, GO to Pinpoint Test F

Possible Sources

  • Memory seat hard/soft stops not correctly set
Diagnostic steps are not provided for this symptom or DTC.  REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
PINPOINT TEST I: THE MEMORY SEAT DOES NOT OPERATE WHEN USING THE RKE (REMOTE KEYLESS ENTRY) TRANSMITTER

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

VERIFY the RKE transmitter is operating correctly and is associated to a memory position. REFER to the Owner's Literature for information on associating a RKE transmitter. CARRY OUT the DSM self-test and REFER to the DTC Chart in this section to diagnose any Diagnostic Trouble Codes (DTCs) retrieved.

Possible Sources

  • RKE transmitter concern
Diagnostic steps are not provided for this symptom or DTC.  REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
PINPOINT TEST J: EASY ENTRY/EASY EXIT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Possible Sources

  • Easy entry/exit feature is not enabled
  • Missing ignition status information
  • DSM

Visual Inspection and Pre-checks

  • Verify the easy entry/exit feature is enabled in the message center. REFER to the Owner's Literature for information on programming vehicle settings in the message center.
J1 CHECK THE DRIVER POWER SEAT OPERATION
  • Ignition ON.
  • Check the message center to verify the easy entry/exit feature is turned on.
  • Using the seat control switch, verify the driver power seat operates fully forward and backward.
  • Using a diagnostic scan tool, perform the DSM self-test.

Are any Diagnostic Trouble Codes (DTCs) received?
Yes REFER to the DTC Chart in this section.
No If disabled, ENABLE the easy entry/exit feature through the message center. REFER to the Owner's Literature. TEST the system for normal operation. If OK, INSTRUCT the customer on correct system operation. If not disabled, GO to J2

J2 CHECK THE DSM (DRIVER FRONT SEAT MODULE) IGNITION POSITION FINAL STATUS PID (PARAMETER IDENTIFICATION) STATES
  • Ignition ON.
  • Using a diagnostic scan tool, monitor the DSM IGN_FINAL PID while cycling the ignition from ON to OFF and back to ON.

Does the PID states match with ignition mode?
Yes INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
No DIAGNOSE the ignition status concern.
REFER to: Steering Wheel and Column Electrical Components (211-05 Steering Wheel and Column Electrical Components, Diagnosis and Testing).

PINPOINT TEST K: THE MULTI-CONTOUR SEAT IS INOPERATIVE/ DOES NOT OPERATE CORRECTLY — DRIVER

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMG B146F:00 Back Bladder System Electropneumatic Failure: No Sub Type Information During self-test, the system inflates each of the bladders in the back of the seat, then monitors for a change in pressure. If the pressure change is not within the allowed threshold, this DTC sets.
SCMG B146F:04 Back Bladder System Electropneumatic Failure: System Internal Failures During self-test, the system inflates each of the bladders in the back of the seat, then monitors for a change in pressure. If the bladders successfully inflate, the system deflates the bladders while checking for a change in pressure. If the pressure change is not within the allowed threshold, this DTC sets.
SCMG B1470:00 Cushion Bladder System Electropneumatic Failure: No Sub Type Information During self-test, the system inflates each of the bladders in the seat cushion, then monitors for a change in pressure. If the pressure change is not within the allowed threshold, this DTC sets.
SCMG B1470:04 Cushion Bladder System Electropneumatic Failure: System Internal Failures During self-test, the system inflates each of the bladders in the seat cushion, then monitors for a change in pressure. If the bladders successfully inflate, the system deflates the bladders while checking for a change in pressure. If the pressure change is not within the allowed threshold, this DTC sets.
SCMG B1473:11 Pump Driver: Circuit Short To Ground This DTC sets when the current draw for the air pump driver is too high for a predetermined time period. This DTC may be set on-demand or in continuous memory.

Possible Sources

  • Wiring, terminals or connectors
  • FDIM
  • Front seat power lumbar assembly
  • Front seat cushion adjuster
  • SCMG

Visual Inspection and Pre-checks

  • Verify all the hose connections to the SCMG are correctly seated and not leaking and/or check for any signs of restrictions (kinked or pinched hoses).

  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.

K1 CHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • NOTE: If the diagnostic scan tool does not communicate to the SCMG ,
    REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
  • Using a diagnostic scan tool, perform the SCMG self-test.

Were any Diagnostic Trouble Codes (DTCs) retrieved?
Yes For B1473:11, GO to K2
If B146F:00 and B1470:00 are both present, GO to K3
For B146F:00 or B146F:04, GO to K9
For B1470:00 or B1470:04, GO to K13
For all other Diagnostic Trouble Codes (DTCs), REFER to the DTC Chart in this section.
No If the multi-contour seat is inoperative, GO to K3
If only the seat backrest bladder(s) are not operating correctly, GO to K9
If only the seat cushion bladder(s) are not operating correctly, GO to K13

K2 CHECK THE MULTI-CONTOUR SEAT CONTROL PUMP FEED FOR A SHORT TO GROUND

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3136.
  • Disconnect: SCMG C3385.
  • Disconnect: Left Multi-Contour Seat Control Pump C3383.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3383-1   Ground

Is the resistance greater than 10,000 ohms?
Yes INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to K18
No REPAIR the circuit. GO to K18

K3 VERIFY THE MULTI-CONTOUR SEAT CONTROL PUMP OPERATES
  • Ignition OFF.
  • Ignition ON.
  • NOTE: When in MASSAGE mode, the multi-contour seat control pump operates continuously. Using the touchscreen, place the multi-contour seat into the MASSAGE mode.
  • Listen near the backrest to determine whether the multi-contour seat control pump is on.

Is the multi-contour seat control pump on?
Yes GO to K7
No GO to K4

K4 CHECK THE MULTI-CONTOUR SEAT CONTROL PUMP GROUND FOR AN OPEN CIRCUIT

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3136.
  • Disconnect: Left Multi-Contour Seat Control Pump C3383.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3383-2   Ground

Is the resistance less than 3 ohms?
Yes GO to K5
No REPAIR the circuit. GO to K18

K5 CHECK THE MULTI-CONTOUR SEAT CONTROL PUMP FEED FOR VOLTAGE

NOTICE: The following step uses a test light to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250- 300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Connect:
    Positive Lead Measurement / Action Negative Lead
      C3383-1   C3383-2
  • Ignition ON.

  • Access the  SCMG  and control the  SBLADR_PMP  PID

  • Using a diagnostic scan tool, toggle the SBLADR_PMP PID on while observing the test light.

Does the test light illuminate?
Yes INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to K18
No GO to K6

K6 CHECK THE MULTI-CONTOUR SEAT CONTROL PUMP FEED FOR AN OPEN CIRCUIT
  • Ignition OFF.
  • Disconnect: SCMG C3385.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3385-3   C3383-1

Is the resistance less than 3 ohms?
Yes GO to K17
No REPAIR the circuit. GO to K18

K7 CHECK THE MULTI-CONTOUR SEAT CONTROL PUMP HOSE FOR CORRECT INSTALLATION OR DAMAGE
  • Ignition OFF.
  • NOTE: The multi-contour seat control pump hose is the red hose located within the blue lock. Visually inspect the multi-contour seat control pump hose for correct installation or damage and check the hose routing to make sure the entire length of the hose is not restricted, bent, kinked or damaged.

Is the multi-contour seat control pump hose installed correctly with no damage?
Yes GO to K8
No REPAIR the hose or INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to K18

K8 CHECK THE MULTI-CONTOUR SEAT CONTROL PUMP OUTPUT
  • Disconnect the multi-contour seat control pump hose at the SCMG .
    • Remove the blue lock (with all 4 hoses)
    • Disconnect the red hose from the blue lock.
  • Connect a suitable pressure gauge to the (red) multi-contour seat control pump hose.
  • Ignition ON.
  • NOTE: When in MASSAGE mode, the multi-contour seat control pump operates continuously. Using the touchscreen, place the multi-contour seat into the MASSAGE mode while observing the pressure gauge. Note the highest pressure obtained.
  • Ignition OFF.

Was the pressure equal to or greater than 169 kPa (24.5 psi)?
Yes GO to K19
No REPAIR the hose or INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to K18

K9 INFLATE THE SUSPECT BACKREST BLADDER(S) WHILE MONITORING THE PRESSURE PARAMETER IDENTIFICATIONS (PIDS)
  • Ignition ON.
  • Using a diagnostic scan tool, select and view the SCMG Parameter Identifications (PIDs) for the suspected bladder(s) as indicated in the table below:

    • Access the  SCMG  and control the  UPPR_LUMB  PID

    • Access the  SCMG  and control the  MID_LUMB  PID

    • Access the  SCMG  and control the  LOW_LUMB  PID

    • Access the  SCMG  and control the  L_BOLST  PID

    • Access the  SCMG  and control the  R_BOLST  PID

    • Access the  SCMG  and monitor the  LUM_BLADR1 (kPa)  PID

    • Access the  SCMG  and monitor the  LUM_BLADR2 (kPa)  PID

    • Access the  SCMG  and monitor the  LUM_BLADR3 (kPa)  PID

    • Access the  SCMG  and monitor the  SIDE_BLDR1 (kPa)  PID

    • Access the  SCMG  and monitor the  SIDE_BLDR2 (kPa)  PID

    Output State Control PID Pressure PID
    Backrest Lumbar
    UPPR_LUMB (Upper Lumbar Inflate Status) LUM_BLADR1 (Lumbar Bladder 1 Pressure)
    MID_LUMB (Mid-Lumbar Bladder Inflate Status) LUM_BLADR2 (Lumbar Bladder 2 Pressure)
    LOW_LUMB (Lower Lumbar Bladder Inflate Status) LUM_BLADR3 (Lumbar Bladder 3 Pressure)
    Backrest Bolster
    L_BOLST (Left Side Bolster Bladder Inflate Status) SIDE_BLDR1 (Side Bolsters Bladder Pressure 1)
    R_BOLST (Right Side Bolster Bladder Inflate Status) SIDE_BLDR2 (Side Bolsters Bladder Pressure 2)
  • NOTE: During this step, the multi-contour seat control pump is on continuously until the output state control PID is toggled back to the NONE mode (off). Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the INFLATE mode until the pressure PID reaches its highest pressure reading. Note the highest pressure achieved.
  • Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the NONE mode.
  • Continue to observe the pressure Parameter Identifications (PIDs) for 2 minutes to check for system air leaks.

Did the suspected bladder(s) inflate to approximately 169 kPa (24.5 psi) and hold pressure within 7 kPa (1 psi) for 2 minutes?
Yes GO to K10
No GO to K12

K10 VENT THE SUSPECT BACKREST BLADDER(S) WHILE MONITORING THE PRESSURE PARAMETER IDENTIFICATIONS (PIDS)
  • Using a diagnostic scan tool, select and view the SCMG Parameter Identifications (PIDs) for the suspected bladder(s) as indicated in the table below:

    • Access the  SCMG  and control the  UPPR_LUMB  PID

    • Access the  SCMG  and control the  MID_LUMB  PID

    • Access the  SCMG  and control the  LOW_LUMB  PID

    • Access the  SCMG  and control the  L_BOLST  PID

    • Access the  SCMG  and control the  R_BOLST  PID

    • Access the  SCMG  and monitor the  LUM_BLADR1 (kPa)  PID

    • Access the  SCMG  and monitor the  LUM_BLADR2 (kPa)  PID

    • Access the  SCMG  and monitor the  LUM_BLADR3 (kPa)  PID

    • Access the  SCMG  and monitor the  SIDE_BLDR1 (kPa)  PID

    • Access the  SCMG  and monitor the  SIDE_BLDR2 (kPa)  PID

    Output State Control PID Pressure PID
    Backrest Lumbar
    UPPR_LUMB (Upper Lumbar Inflate Status) LUM_BLADR1 (Lumbar Bladder 1 Pressure)
    MID_LUMB (Mid-Lumbar Bladder Inflate Status) LUM_BLADR2 (Lumbar Bladder 2 Pressure)
    LOW_LUMB (Lower Lumbar Bladder Inflate Status) LUM_BLADR3 (Lumbar Bladder 3 Pressure)
    Backrest Bolster
    L_BOLST (Left Side Bolster Bladder Inflate Status) SIDE_BLDR1 (Side Bolsters Bladder Pressure 1)
    R_BOLST (Right Side Bolster Bladder Inflate Status) SIDE_BLDR2 (Side Bolsters Bladder Pressure 2)
  • Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the VENT mode until the pressure PID reaches its lowest pressure reading.
  • Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the NONE mode.

Did the suspected bladder(s) pressure drop to approximately 100 kPa (14.5 psi)?
Yes GO to K19
No GO to K11

K11 CHECK THE BACKREST HOSE(S) FOR CORRECT INSTALLATION, RESTRICTION OR DAMAGE
  • Ignition OFF.
  • Visually inspect the backrest hose(s) for correct installation or damage and check the hose routing to make sure the entire length of the hose is not restricted, bent, kinked or damaged.

    Blue lock:

    • Yellow hose - Lumbar bladder 3 (lower)
    • Transparent green hose - Lumbar bladder 2 (middle)
    • Clear hose - Lumbar bladder 1 (upper)

    Yellow lock:

    • Transparent orange hose - Side bolster 2 (RH )
    • Transparent red hose - Side bolster 1 (LH )

Are the backrest hoses installed correctly with no damage or restrictions?
Yes GO to K19
No REPAIR the hose(s) or INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

K12 CHECK THE BACKREST HOSES FOR LEAKS
  • Ignition OFF.
  • NOTE: To disconnect the suspect hose(s), first remove the associated lock (with all the associated hoses) as an assembly. Once removed, individual hose(s) can be removed from the lock. Disconnect the suspect backrest hose(s) at the SCMG .

    Blue lock:

    • Yellow hose - Lumbar bladder 3 (lower)
    • Transparent green hose - Lumbar bladder 2 (middle)
    • Clear hose - Lumbar bladder 1 (upper)

    Yellow lock:

    • Transparent orange hose - Side bolster 2 (RH )
    • Transparent red hose - Side bolster 1 (LH )
  • Connect a suitable hand vacuum/pressure pump (with pressure gauge) to the suspect backrest hose.
  • NOTICE: To prevent damage to the front seat power lumbar assembly, do not exceed 169 kPa (24.5 psi) during this step. Pump the suspect backrest hose and bladder to 138 kPa (20 psi).
  • Continue to observe the pressure gauge for 2 minutes to check for system air leaks.

Did the suspected bladder(s) inflate to 138 kPa (20 psi) and hold pressure within 7 kPa (1 psi) for 2 minutes?
Yes GO to K19
No INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

K13 INFLATE THE SUSPECT CUSHION BLADDER(S) WHILE MONITORING THE PRESSURE PARAMETER IDENTIFICATIONS (PIDS)
  • Ignition ON.
  • Using a diagnostic scan tool, select and view the SCMG Parameter Identifications (PIDs) for the suspected bladder(s) as indicated in the table below:

    • Access the  SCMG  and control the  SC_INFLAT1  PID

    • Access the  SCMG  and control the  SC_INFLAT2  PID

    • Access the  SCMG  and control the  SC_INFLAT3  PID

    • Access the  SCMG  and control the  SC_INFLAT4  PID

    • Access the  SCMG  and control the  LBOT_BOLST  PID

    • Access the  SCMG  and control the  RBOT_BOLST  PID

    • Access the  SCMG  and monitor the  SC_BLADDR1 (kPa)  PID

    • Access the  SCMG  and monitor the  SC_BLADDR2 (kPa)  PID

    • Access the  SCMG  and monitor the  SC_BLADDR3 (kPa)  PID

    • Access the  SCMG  and monitor the  SC_BLADDR4 (kPa)  PID

    • Access the  SCMG  and monitor the  SC_BOLST1 (kPa)  PID

    • Access the  SCMG  and monitor the  SC_BOLST2 (kPa)  PID

    Output State Control PID Pressure PID
    Seat Cushion
    SC_INFLAT1 (Seat Cushion Bladder Inflate Status 1) SC_BLADDR1 (Seat Cushion Bladder 1)
    SC_INFLAT2 (Seat Cushion Bladder Inflate Status 2) SC_BLADDR2 (Seat Cushion Bladder 2)
    SC_INFLAT3 (Seat Cushion Bladder Inflate Status 3) SC_BLADDR3 (Seat Cushion Bladder 3)
    SC_INFLAT4 (Seat Cushion Bladder Inflate Status 4) SC_BLADDR4 (Seat Cushion Bladder 4)
    Seat Cushion Bolster
    LBOT_BOLST (Left Bottom Bolster Bladder Inflate Status) SC_BOLST1 (Seat Cushion Bolster Bladder 1 Pressure)
    RBOT_BOLST (Right Bottom Bolster Bladder Inflate Status) SC_BOLST2 (Seat Cushion Bolster Bladder 2 Pressure)
  • NOTE: During this step, the multi-contour seat control pump is on continuously until the output state control PID is toggled back to the NONE mode (off). Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the INFLATE mode until the pressure PID reaches its highest pressure reading. Note the highest pressure achieved.
  • Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the NONE mode.
  • Continue to observe the pressure Parameter Identifications (PIDs) for 2 minutes to check for system air leaks.

Did the suspected bladder(s) inflate to approximately 169 kPa (24.5 psi) and hold pressure within 7 kPa (1 psi) for 2 minutes?
Yes GO to K14
No GO to K16

K14 VENT THE SUSPECT CUSHION BLADDER(S) WHILE MONITORING THE PRESSURE PARAMETER IDENTIFICATIONS (PIDS)
  • Using a diagnostic scan tool, select and view the SCMG Parameter Identifications (PIDs) for the suspected bladder(s) as indicated in the table below:

    • Access the  SCMG  and control the  SC_INFLAT1  PID

    • Access the  SCMG  and control the  SC_INFLAT2  PID

    • Access the  SCMG  and control the  SC_INFLAT3  PID

    • Access the  SCMG  and control the  SC_INFLAT4  PID

    • Access the  SCMG  and control the  LBOT_BOLST  PID

    • Access the  SCMG  and control the  RBOT_BOLST  PID

    • Access the  SCMG  and monitor the  SC_BLADDR1 (kPa)  PID

    • Access the  SCMG  and monitor the  SC_BLADDR2 (kPa)  PID

    • Access the  SCMG  and monitor the  SC_BLADDR3 (kPa)  PID

    • Access the  SCMG  and monitor the  SC_BLADDR4 (kPa)  PID

    • Access the  SCMG  and monitor the  SC_BOLST1 (kPa)  PID

    • Access the  SCMG  and monitor the  SC_BOLST2 (kPa)  PID

    Output State Control PID Pressure PID
    Seat Cushion
    SC_INFLAT1 (Seat Cushion Bladder Inflate Status 1) SC_BLADDR1 (Seat Cushion Bladder 1)
    SC_INFLAT2 (Seat Cushion Bladder Inflate Status 2) SC_BLADDR2 (Seat Cushion Bladder 2)
    SC_INFLAT3 (Seat Cushion Bladder Inflate Status 3) SC_BLADDR3 (Seat Cushion Bladder 3)
    SC_INFLAT4 (Seat Cushion Bladder Inflate Status 4) SC_BLADDR4 (Seat Cushion Bladder 4)
    Seat Cushion Bolster
    LBOT_BOLST (Left Bottom Bolster Bladder Inflate Status) SC_BOLST1 (Seat Cushion Bolster Bladder 1 Pressure)
    RBOT_BOLST (Right Bottom Bolster Bladder Inflate Status) SC_BOLST2 (Seat Cushion Bolster Bladder 2 Pressure)
  • Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the VENT mode until the pressure PID reaches its lowest pressure reading.
  • Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the NONE mode.

Did the suspected bladder(s) pressure drop to approximately 100 kPa (14.5 psi)?
Yes GO to K19
No GO to K15

K15 CHECK THE CUSHION HOSE(S) FOR CORRECT INSTALLATION, RESTRICTION OR DAMAGE
  • Ignition OFF.
  • Visually inspect the cushion hose(s) for correct installation or damage and check the hose routing to make sure the entire length of the hose are not restricted (bends, kinks, etc).

    Orange lock:

    • Black hose - Seat cushion bladder 4 (RH front)
    • Transparent blue hose - Seat cushion bladder 3 (RH rear)
    • Blue hose - Seat cushion bladder 2 (LH rear)
    • Green hose - Seat cushion bladder 1 (LH front)

    Green lock:

    • Transparent yellow hose - Seat cushion bolster 2 (RH front)
    • Transparent magenta hose - Seat cushion bolster 1 (LH rear)

Are the cushion hoses installed correctly with no damage or restrictions?
Yes GO to K19
No REPAIR the hose(s) or INSTALL a new front seat cushion adjuster.
REFER to: Front Seat Cushion Adjuster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

K16 CHECK THE CUSHION HOSES FOR LEAKS
  • Ignition OFF.
  • NOTE: To disconnect the suspect hose(s), first remove the associated lock (with all the associated hoses) as an assembly. Once removed, individual hose(s) can be removed from the lock. Disconnect the suspect cushion hose(s) at the SCMG .

    Orange lock:

    • Black hose - Seat cushion bladder 4 (RH front)
    • Transparent blue hose - Seat cushion bladder 3 (RH rear)
    • Blue hose - Seat cushion bladder 2 (LH rear)
    • Green hose - Seat cushion bladder 1 (LH front)

    Green lock:

    • Transparent yellow hose - Seat cushion bolster 2 (RH front)
    • Transparent magenta hose - Seat cushion bolster 1 (LH rear)
  • Connect a suitable hand vacuum/pressure pump (with pressure gauge) to the suspect cushion hose.
  • NOTICE: To prevent damage to the front seat cushion adjuster, do not exceed 169 kPa (24.5 psi) during this step. Carefully pump the suspect cushion hose to approximately 138 kPa (20 psi).
  • Continue to observe the pressure gauge for 2 minutes to check for system air leaks.

Did the suspected bladder(s) inflate to approximately 138 kPa (20 psi) and hold pressure within 7 kPa (1 psi) for 2 minutes?
Yes GO to K19
No INSTALL a new front seat cushion adjuster.
REFER to: Front Seat Cushion Adjuster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

K17 CHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the SCMG connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMG connector. Make sure it seats and latches correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-line C3136 at this time. Reconnect all previously disconnected connectors and hoses.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMG .
REFER to: Driver Multi-Contour Seat Module [SCMG] - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to K18
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to K18

K18 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Driver Side Airbag In-line C3136.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

K19 CHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the SCMG connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMG connector. Make sure it seats and latches correctly.
  • Reconnect all previously disconnected connectors and hoses.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMG .
REFER to: Driver Multi-Contour Seat Module [SCMG] - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST L: THE MULTI-CONTOUR SEAT IS INOPERATIVE/ DOES NOT OPERATE CORRECTLY — PASSENGER

Refer to Wiring Diagrams Cell 120 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMH B146F:00 Back Bladder System Electropneumatic Failure: No Sub Type Information During self-test, the system inflates each of the bladders in the back of the seat, then monitors for a change in pressure. If the pressure change is not within the allowed threshold, this DTC sets.
SCMH B146F:04 Back Bladder System Electropneumatic Failure: System Internal Failures During self-test, the system inflates each of the bladders in the back of the seat, then monitors for a change in pressure. If the bladders successfully inflate, the system deflates the bladders while checking for a change in pressure. If the pressure change is not within the allowed threshold, this DTC sets.
SCMH B1470:00 Cushion Bladder System Electropneumatic Failure: No Sub Type Information During self-test, the system inflates each of the bladders in the seat cushion, then monitors for a change in pressure. If the pressure change is not within the allowed threshold, this DTC sets.
SCMH B1470:04 Cushion Bladder System Electropneumatic Failure: System Internal Failures During self-test, the system inflates each of the bladders in the seat cushion, then monitors for a change in pressure. If the bladders successfully inflate, the system deflates the bladders while checking for a change in pressure. If the pressure change is not within the allowed threshold, this DTC sets.
SCMH B1473:11 Pump Driver: Circuit Short To Ground This DTC sets when the current draw for the air pump driver is too high for a predetermined time period. This DTC may be set on-demand or in continuous memory.

Possible Sources

  • Wiring, terminals or connectors
  • FDIM
  • Front seat power lumbar assembly
  • Front seat cushion adjuster
  • SCMH

Visual Inspection and Pre-checks

  • Verify all the hose connections to the SCMH are correctly seated and not leaking and/or check for any signs of restrictions (kinked or pinched hoses).

  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.

L1 CHECK THE SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • NOTE: If the diagnostic scan tool does not communicate to the SCMH ,
    REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
  • Using a diagnostic scan tool, perform the SCMH self-test.

Were any Diagnostic Trouble Codes (DTCs) retrieved?
Yes For B1473:11, GO to L2
If B146F:00 and B1470:00 are both present, GO to L3
For B146F:00 or B146F:04, GO to L9
For B1470:00 or B1470:04, GO to L13
For all other Diagnostic Trouble Codes (DTCs), REFER to the DTC Chart in this section.
No If the multi-contour seat is inoperative, GO to L3
If only the seat backrest bladder(s) are not operating correctly, GO to L9
If only the seat cushion bladder(s) are not operating correctly, GO to L13

L2 CHECK THE MULTI-CONTOUR SEAT CONTROL PUMP FEED FOR A SHORT TO GROUND

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C3137.
  • Disconnect: SCMH C3386.
  • Disconnect: Right Multi-Contour Seat Control Pump C3384.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3384-1   Ground

Is the resistance greater than 10,000 ohms?
Yes INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to L18
No REPAIR the circuit. GO to L18

L3 VERIFY THE MULTI-CONTOUR SEAT CONTROL PUMP OPERATES
  • Ignition OFF.
  • Ignition ON.
  • NOTE: When in MASSAGE mode, the multi-contour seat control pump operates continuously. Using the touchscreen, place the multi-contour seat into the MASSAGE mode.
  • Listen near the backrest to determine whether the multi-contour seat control pump is on.

Is the multi-contour seat control pump on?
Yes GO to L7
No GO to L4

L4 CHECK THE MULTI-CONTOUR SEAT CONTROL PUMP GROUND FOR AN OPEN CIRCUIT

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C3137.
  • Disconnect: Right Multi-Contour Seat Control Pump C3384.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3384-2   Ground

Is the resistance less than 3 ohms?
Yes GO to L5
No REPAIR the circuit. GO to L18

L5 CHECK THE MULTI-CONTOUR SEAT CONTROL PUMP FEED FOR VOLTAGE

NOTICE: The following step uses a test light to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250- 300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Connect:
    Positive Lead Measurement / Action Negative Lead
      C3384-1   C3384-2
  • Ignition ON.

  • Access the  SCMH  and control the  SBLADR_PMP  PID

  • Using a diagnostic scan tool, toggle the SBLADR_PMP PID on while observing the test light.

Does the test light illuminate?
Yes INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to L18
No GO to L6

L6 CHECK THE MULTI-CONTOUR SEAT CONTROL PUMP FEED FOR AN OPEN CIRCUIT
  • Ignition OFF.
  • Disconnect: SCMH C3386.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3386-3   C3384-1

Is the resistance less than 3 ohms?
Yes GO to L17
No REPAIR the circuit. GO to L18

L7 CHECK THE MULTI-CONTOUR SEAT CONTROL PUMP HOSE FOR CORRECT INSTALLATION OR DAMAGE
  • Ignition OFF.
  • NOTE: The multi-contour seat control pump hose is the red hose located within the blue lock. Visually inspect the multi-contour seat control pump hose for correct installation or damage and check the hose routing to make sure the entire length of the hose is not restricted, bent, kinked or damaged.

Is the multi-contour seat control pump hose installed correctly with no damage?
Yes GO to L8
No REPAIR the hose or INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to L18

L8 CHECK THE MULTI-CONTOUR SEAT CONTROL PUMP OUTPUT
  • Disconnect the multi-contour seat control pump hose at the SCMH .
    • Remove the blue lock (with all 4 hoses)
    • Disconnect the red hose from the blue lock.
  • Connect a suitable pressure gauge to the (red) multi-contour seat control pump hose.
  • Ignition ON.
  • NOTE: When in MASSAGE mode, the multi-contour seat control pump operates continuously. Using the touchscreen, place the multi-contour seat into the MASSAGE mode while observing the pressure gauge. Note the highest pressure obtained.
  • Ignition OFF.

Was the pressure equal to or greater than 169 kPa (24.5 psi)?
Yes GO to L19
No REPAIR the hose or INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to L18

L9 INFLATE THE SUSPECT BACKREST BLADDER(S) WHILE MONITORING THE PRESSURE PARAMETER IDENTIFICATIONS (PIDS)
  • Ignition ON.
  • Using a diagnostic scan tool, select and view the SCMH Parameter Identifications (PIDs) for the suspected bladder(s) as indicated in the table below:

    • Access the  SCMH  and control the  UPPR_LUMB  PID

    • Access the  SCMH  and control the  MID_LUMB  PID

    • Access the  SCMH  and control the  LOW_LUMB  PID

    • Access the  SCMH  and control the  L_BOLST  PID

    • Access the  SCMH  and control the  R_BOLST  PID

    • Access the  SCMH  and monitor the  LUM_BLADR1 (kPa)  PID

    • Access the  SCMH  and monitor the  LUM_BLADR2 (kPa)  PID

    • Access the  SCMH  and monitor the  LUM_BLADR3 (kPa)  PID

    • Access the  SCMH  and monitor the  SIDE_BLDR1 (kPa)  PID

    • Access the  SCMH  and monitor the  SIDE_BLDR2 (kPa)  PID

    Output State Control PID Pressure PID
    Backrest Lumbar
    UPPR_LUMB (Upper Lumbar Inflate Status) LUM_BLADR1 (Lumbar Bladder 1 Pressure)
    MID_LUMB (Mid-Lumbar Bladder Inflate Status) LUM_BLADR2 (Lumbar Bladder 2 Pressure)
    LOW_LUMB (Lower Lumbar Bladder Inflate Status) LUM_BLADR3 (Lumbar Bladder 3 Pressure)
    Backrest Bolster
    L_BOLST (Left Side Bolster Bladder Inflate Status) SIDE_BLDR1 (Side Bolsters Bladder Pressure 1)
    R_BOLST (Right Side Bolster Bladder Inflate Status) SIDE_BLDR2 (Side Bolsters Bladder Pressure 2)
  • NOTE: During this step, the multi-contour seat control pump is on continuously until the output state control PID is toggled back to the NONE mode (off). Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the INFLATE mode until the pressure PID reaches its highest pressure reading. Note the highest pressure achieved.
  • Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the NONE mode.
  • Continue to observe the pressure Parameter Identifications (PIDs) for 2 minutes to check for system air leaks.

Did the suspected bladder(s) inflate to approximately 169 kPa (24.5 psi) and hold pressure within 7 kPa (1 psi) for 2 minutes?
Yes GO to L10
No GO to L12

L10 VENT THE SUSPECT BACKREST BLADDER(S) WHILE MONITORING THE PRESSURE PARAMETER IDENTIFICATIONS (PIDS)
  • Using a diagnostic scan tool, select and view the SCMH Parameter Identifications (PIDs) for the suspected bladder(s) as indicated in the table below:

    • Access the  SCMH  and control the  UPPR_LUMB  PID

    • Access the  SCMH  and control the  MID_LUMB  PID

    • Access the  SCMH  and control the  LOW_LUMB  PID

    • Access the  SCMH  and control the  L_BOLST  PID

    • Access the  SCMH  and control the  R_BOLST  PID

    • Access the  SCMH  and monitor the  LUM_BLADR1 (kPa)  PID

    • Access the  SCMH  and monitor the  LUM_BLADR2 (kPa)  PID

    • Access the  SCMH  and monitor the  LUM_BLADR3 (kPa)  PID

    • Access the  SCMH  and monitor the  SIDE_BLDR1 (kPa)  PID

    • Access the  SCMH  and monitor the  SIDE_BLDR2 (kPa)  PID

    Output State Control PID Pressure PID
    Backrest Lumbar
    UPPR_LUMB (Upper Lumbar Inflate Status) LUM_BLADR1 (Lumbar Bladder 1 Pressure)
    MID_LUMB (Mid-Lumbar Bladder Inflate Status) LUM_BLADR2 (Lumbar Bladder 2 Pressure)
    LOW_LUMB (Lower Lumbar Bladder Inflate Status) LUM_BLADR3 (Lumbar Bladder 3 Pressure)
    Backrest Bolster
    L_BOLST (Left Side Bolster Bladder Inflate Status) SIDE_BLDR1 (Side Bolsters Bladder Pressure 1)
    R_BOLST (Right Side Bolster Bladder Inflate Status) SIDE_BLDR2 (Side Bolsters Bladder Pressure 2)
  • Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the VENT mode until the pressure PID reaches its lowest pressure reading.
  • Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the NONE mode.

Did the suspected bladder(s) pressure drop to approximately 100 kPa (14.5 psi)?
Yes GO to L19
No GO to L11

L11 CHECK THE BACKREST HOSE(S) FOR CORRECT INSTALLATION, RESTRICTION OR DAMAGE
  • Ignition OFF.
  • Visually inspect the backrest hose(s) for correct installation or damage and check the hose routing to make sure the entire length of the hose is not restricted, bent, kinked or damaged.

    Blue lock:

    • Yellow hose - Lumbar bladder 3 (lower)
    • Transparent green hose - Lumbar bladder 2 (middle)
    • Clear hose - Lumbar bladder 1 (upper)

    Yellow lock:

    • Transparent orange hose - Side bolster 2 (RH )
    • Transparent red hose - Side bolster 1 (LH )

Are the backrest hoses installed correctly with no damage or restrictions?
Yes GO to L19
No REPAIR the hose(s) or INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

L12 CHECK THE BACKREST HOSES FOR LEAKS
  • Ignition OFF.
  • NOTE: To disconnect the suspect hose(s), first remove the associated lock (with all the associated hoses) as an assembly. Once removed, individual hose(s) can be removed from the lock. Disconnect the suspect backrest hose(s) at the SCMH .

    Blue lock:

    • Yellow hose - Lumbar bladder 3 (lower)
    • Transparent green hose - Lumbar bladder 2 (middle)
    • Clear hose - Lumbar bladder 1 (upper)

    Yellow lock:

    • Transparent orange hose - Side bolster 2 (RH )
    • Transparent red hose - Side bolster 1 (LH )
  • Connect a suitable hand vacuum/pressure pump (with pressure gauge) to the suspect backrest hose.
  • NOTICE: To prevent damage to the front seat power lumbar assembly, do not exceed 169 kPa (24.5 psi) during this step. Pump the suspect backrest hose and bladder to 138 kPa (20 psi).
  • Continue to observe the pressure gauge for 2 minutes to check for system air leaks.

Did the suspected bladder(s) inflate to 138 kPa (20 psi) and hold pressure within 7 kPa (1 psi) for 2 minutes?
Yes GO to L19
No INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

L13 INFLATE THE SUSPECT CUSHION BLADDER(S) WHILE MONITORING THE PRESSURE PARAMETER IDENTIFICATIONS (PIDS)
  • Ignition ON.
  • Using a diagnostic scan tool, select and view the SCMH Parameter Identifications (PIDs) for the suspected bladder(s) as indicated in the table below:

    • Access the  SCMH  and control the  SC_INFLAT1  PID

    • Access the  SCMH  and control the  SC_INFLAT2  PID

    • Access the  SCMH  and control the  SC_INFLAT3  PID

    • Access the  SCMH  and control the  SC_INFLAT4  PID

    • Access the  SCMH  and control the  LBOT_BOLST  PID

    • Access the  SCMH  and control the  RBOT_BOLST  PID

    • Access the  SCMH  and monitor the  SC_BLADDR1 (kPa)  PID

    • Access the  SCMH  and monitor the  SC_BLADDR2 (kPa)  PID

    • Access the  SCMH  and monitor the  SC_BLADDR3 (kPa)  PID

    • Access the  SCMH  and monitor the  SC_BLADDR4 (kPa)  PID

    • Access the  SCMH  and monitor the  SC_BOLST1 (kPa)  PID

    • Access the  SCMH  and monitor the  SC_BOLST2 (kPa)  PID

    Output State Control PID Pressure PID
    Seat Cushion
    SC_INFLAT1 (Seat Cushion Bladder Inflate Status 1) SC_BLADDR1 (Seat Cushion Bladder 1)
    SC_INFLAT2 (Seat Cushion Bladder Inflate Status 2) SC_BLADDR2 (Seat Cushion Bladder 2)
    SC_INFLAT3 (Seat Cushion Bladder Inflate Status 3) SC_BLADDR3 (Seat Cushion Bladder 3)
    SC_INFLAT4 (Seat Cushion Bladder Inflate Status 4) SC_BLADDR4 (Seat Cushion Bladder 4)
    Seat Cushion Bolster
    LBOT_BOLST (Left Bottom Bolster Bladder Inflate Status) SC_BOLST1 (Seat Cushion Bolster Bladder 1 Pressure)
    RBOT_BOLST (Right Bottom Bolster Bladder Inflate Status) SC_BOLST2 (Seat Cushion Bolster Bladder 2 Pressure)
  • NOTE: During this step, the multi-contour seat control pump is on continuously until the output state control PID is toggled back to the NONE mode (off). Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the INFLATE mode until the pressure PID reaches its highest pressure reading. Note the highest pressure achieved.
  • Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the NONE mode.
  • Continue to observe the pressure Parameter Identifications (PIDs) for 2 minutes to check for system air leaks.

Did the suspected bladder(s) inflate to approximately 169 kPa (24.5 psi) and hold pressure within 7 kPa (1 psi) over a time period of 2 minutes?
Yes GO to L14
No GO to L16

L14 VENT THE SUSPECT CUSHION BLADDER(S) WHILE MONITORING THE PRESSURE PARAMETER IDENTIFICATIONS (PIDS)
  • Using a diagnostic scan tool, select and view the SCMH Parameter Identifications (PIDs) for the suspected bladder(s) as indicated in the table below:

    • Access the  SCMH  and control the  SC_INFLAT1  PID

    • Access the  SCMH  and control the  SC_INFLAT2  PID

    • Access the  SCMH  and control the  SC_INFLAT3  PID

    • Access the  SCMH  and control the  SC_INFLAT4  PID

    • Access the  SCMH  and control the  LBOT_BOLST  PID

    • Access the  SCMH  and control the  RBOT_BOLST  PID

    • Access the  SCMH  and monitor the  SC_BLADDR1 (kPa)  PID

    • Access the  SCMH  and monitor the  SC_BLADDR2 (kPa)  PID

    • Access the  SCMH  and monitor the  SC_BLADDR3 (kPa)  PID

    • Access the  SCMH  and monitor the  SC_BLADDR4 (kPa)  PID

    • Access the  SCMH  and monitor the  SC_BOLST1 (kPa)  PID

    • Access the  SCMH  and monitor the  SC_BOLST2 (kPa)  PID

    Output State Control PID Pressure PID
    Seat Cushion
    SC_INFLAT1 (Seat Cushion Bladder Inflate Status 1) SC_BLADDR1 (Seat Cushion Bladder 1)
    SC_INFLAT2 (Seat Cushion Bladder Inflate Status 2) SC_BLADDR2 (Seat Cushion Bladder 2)
    SC_INFLAT3 (Seat Cushion Bladder Inflate Status 3) SC_BLADDR3 (Seat Cushion Bladder 3)
    SC_INFLAT4 (Seat Cushion Bladder Inflate Status 4) SC_BLADDR4 (Seat Cushion Bladder 4)
    Seat Cushion Bolster
    LBOT_BOLST (Left Bottom Bolster Bladder Inflate Status) SC_BOLST1 (Seat Cushion Bolster Bladder 1 Pressure)
    RBOT_BOLST (Right Bottom Bolster Bladder Inflate Status) SC_BOLST2 (Seat Cushion Bolster Bladder 2 Pressure)
  • Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the VENT mode until the pressure PID reaches its lowest pressure reading.
  • Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the NONE mode.

Did the suspected bladder(s) pressure drop to approximately 100 kPa (14.5 psi)?
Yes GO to L19
No GO to L15

L15 CHECK THE CUSHION HOSE(S) FOR CORRECT INSTALLATION, RESTRICTION OR DAMAGE
  • Ignition OFF.
  • Visually inspect the cushion hose(s) for correct installation or damage and check the hose routing to make sure the entire length of the hose are not restricted (bends, kinks, etc).

    Orange lock:

    • Black hose - Seat cushion bladder 4 (RH front)
    • Transparent blue hose - Seat cushion bladder 3 (RH rear)
    • Blue hose - Seat cushion bladder 2 (LH rear)
    • Green hose - Seat cushion bladder 1 (LH front)

    Green lock:

    • Transparent yellow hose - Seat cushion bolster 2 (RH front)
    • Transparent magenta hose - Seat cushion bolster 1 (LH rear)

Are the cushion hoses installed correctly with no damage or restrictions?
Yes GO to L19
No REPAIR the hose(s) or INSTALL a new front seat cushion adjuster.
REFER to: Front Seat Cushion Adjuster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

L16 CHECK THE CUSHION HOSES FOR LEAKS
  • Ignition OFF.
  • NOTE: To disconnect the suspect hose(s), first remove the associated lock (with all the associated hoses) as an assembly. Once removed, individual hose(s) can be removed from the lock. Disconnect the suspect cushion hose(s) at the SCMH .

    Orange lock:

    • Black hose - Seat cushion bladder 4 (RH front)
    • Transparent blue hose - Seat cushion bladder 3 (RH rear)
    • Blue hose - Seat cushion bladder 2 (LH rear)
    • Green hose - Seat cushion bladder 1 (LH front)

    Green lock:

    • Transparent yellow hose - Seat cushion bolster 2 (RH front)
    • Transparent magenta hose - Seat cushion bolster 1 (LH rear)
  • Connect a suitable hand vacuum/pressure pump (with pressure gauge) to the suspect cushion hose.
  • NOTICE: To prevent damage to the front seat cushion adjuster, do not exceed 169 kPa (24.5 psi) during this step. Carefully pump the suspect cushion hose to approximately 138 kPa (20 psi).
  • Continue to observe the pressure gauge for 2 minutes to check for system air leaks.

Did the suspected bladder(s) inflate to approximately 138 kPa (20 psi) and hold pressure within 7 kPa (1 psi) over a time period of 2 minutes?
Yes GO to L19
No INSTALL a new front seat cushion adjuster.
REFER to: Front Seat Cushion Adjuster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

L17 CHECK THE SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the SCMH connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMH connector. Make sure it seats and latches correctly.
  • NOTE: Do not reconnect Passenger Side Airbag In-line C3137 at this time. Reconnect all previously disconnected connectors and hoses.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMH .
REFER to: Driver Multi-Contour Seat Module [SCMG] - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to L18
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to L18

L18 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Passenger Side Airbag In-line C3137.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

L19 CHECK THE SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the SCMH connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMH connector. Make sure it seats and latches correctly.
  • Reconnect all previously disconnected connectors and hoses.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMH .
REFER to: Driver Multi-Contour Seat Module [SCMG] - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST M: BOTH HEATED SEATS ARE INOPERATIVE — WITHOUT HEATED/VENTILATED SEATS

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Possible Sources

  • Fuse
  • Wiring, terminals or connectors
  • FCIMB
  • HVAC module

Visual Inspection and Pre-checks

  • Verify the BJB fuse 39 (20A) is OK.
M1 CHECK FOR HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition OFF.
  • Ignition ON.
  • Using a diagnostic scan tool, perform HVAC module self-test.

Are any HVAC module Diagnostic Trouble Codes (DTCs) present?
Yes REFER to the DTC Chart in this section.
No GO to M2

M2 CHECK THE FCIMB (FRONT CONTROLS INTERFACE MODULE B) HEATED SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)
  • Start the engine.

  • Access the  FCIMB  and monitor the  CC_SW_D_HSEATS  PID

  • Access the  FCIMB  and monitor the  CC_SW_P_HSEATS  PID

  • Monitor the CC_SW_D_HSEATS and CC_SW_P_HSEATS Parameter Identifications (PIDs) while pressing and releasing the driver and passenger heated seat control switches.

Do the Parameter Identifications (PIDs) change when the driver and passenger heated seat control switches are pressed and released?
Yes GO to M3
No INSTALL a new FCIMB module.
REFER to: Front Controls Interface Module B (FCIMB) (415-00 Information and Entertainment System - General Information, Removal and Installation).

M3 CHECK THE HEATED SEAT VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect: HVAC Module C228B.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C228B-1   Ground

Is the voltage greater than 11 volts?
Yes GO to M4
No VERIFY BJB fuse 39 (20A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

M4 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the HVAC module connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the HVAC module connectors. Make sure they seat and latch correctly.
  • Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new HVAC module module.
REFER to: Heating, Ventilation and Air Conditioning (HVAC) Control Module (412-00 Climate Control System - General Information, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST N: THE LEFT HEATED SEAT IS INOPERATIVE — WITHOUT HEATED/VENTILATED SEATS

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
HVAC B1034:11 Left Front Seat Heater Element: Circuit Short To Ground Sets when the HVAC module senses the left front heater element current draw has exceeded a specified threshold. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.
HVAC B1034:15 Left Front Seat Heater Element: Circuit Short To Battery Or Open Sets when the HVAC module senses the left front heater element current draw is less than a specified threshold. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.
HVAC B1038:11 Left Front Seat Heater Sensor: Circuit Short To Ground Sets when the HVAC module senses the left front heater sensor voltage is out-of-range low. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.
HVAC B1038:15 Left Front Seat Heater Sensor: Circuit Short To Battery Or Open Sets when the HVAC module senses the left front heater sensor voltage is out-of-range high. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.

Possible Sources

  • Wiring, terminals or connectors
  • Heater mat
  • FCIMB
  • HVAC module

  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.

N1 CHECK FOR HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition OFF.
  • Ignition ON.
  • Using a diagnostic scan tool, perform HVAC module self-test.

Are any HVAC module Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B1034:11 or B1034:15, GO to N4
For DTC B1038:11 or B1038:15, GO to N6
For all other Diagnostic Trouble Codes (DTCs),
REFER to: Climate Control System (412-00 Climate Control System - General Information, Diagnosis and Testing).
No GO to N2

N2 CHECK THE FCIMB (FRONT CONTROLS INTERFACE MODULE B) HEATED SEAT CONTROL SWITCH PID (PARAMETER IDENTIFICATION)
  • Start the engine.

  • Access the  FCIMB  and monitor the  CC_SW_D_HSEATS  PID

  • Monitor the CC_SW_D_HSEATS PID while pressing and releasing the driver heated seat control switch.

Did the PID change when the driver heated seat control switch was pressed and released?
Yes GO to N3
No INSTALL a new FCIMB module.
REFER to: Front Controls Interface Module B (FCIMB) (415-00 Information and Entertainment System - General Information, Removal and Installation).

N3 CHECK THE HEATED SEAT VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect: HVAC Module C228B.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C228B-1   Ground

Is the voltage greater than 11 volts?
Yes GO to N4
No REPAIR the circuit.

N4 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3136.
  • Disconnect: HVAC Module C228B (if not previously disconnected).
  • Disconnect: Left Front Seat Cushion Heater C364.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C364-1   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to N15
No GO to N5

N5 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C364-1   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C364-1   C228B-16

Is the resistance greater than 10,000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the HVAC module?
Yes GO to N9
No REPAIR the circuit. GO to N15

N6 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR AN OPEN OR SHORT TO GROUND

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3136.
  • Disconnect: HVAC Module C228B.
  • Disconnect: Left Front Seat Cushion Heater C364.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C364-2   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C364-2   C228B-30

Is the resistance greater than 10,000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the HVAC module?
Yes GO to N7
No REPAIR the circuit. GO to N15

N7 CHECK THE HEATED SEAT TEMPERATURE SENSOR RETURN CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Disconnect: HVAC Module C228A.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C364-3   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C364-3   C228A-2

Is the resistance greater than 10,000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the HVAC module?
Yes GO to N8
No REPAIR the open circuit or REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. GO to N15

N8 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C364-2   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to N15
No GO to N13

N9 CHECK THE HEATER ELEMENT GROUND CIRCUIT FOR AN OPEN
  • Disconnect: Left Front Seat Backrest Heater C365.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C365-2   Ground

Is the resistance less than 0.5 ohm?
Yes GO to N10
No REPAIR the circuit. GO to N15

N10 CHECK THE CUSHION HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    C364-1, Component Side C364-4, Component Side
    C364-1, Component Side Ground

Is the resistance between 0.6 and 2 ohms between pins 1 and 4; and greater than 10,000 ohms between pin 1 and ground?
Yes GO to N11
No INSTALL a new driver seat cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to N15

N11 CHECK THE BACKREST HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    C365-1, Component Side C365-2, Component Side
    C365-2, Component Side Ground

Is the resistance between 0.6 and 2 ohms between pins 1 and 2; and greater than 10,000 ohms between pin 2 and ground?
Yes GO to N12
No INSTALL a new driver seat backrest heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to N15

N12 CHECK THE CIRCUIT BETWEEN THE CUSHION HEATER MAT AND BACKREST HEATER MAT FOR AN OPEN AND SHORT TO GROUND
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C364-4   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C364-4   C365-1

Is the resistance greater than 10,000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the backrest heater mat?
Yes GO to N14
No REPAIR the circuit. GO to N15

N13 CHECK THE HEATED SEAT TEMPERATURE SENSOR FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    C364-2, Component Side C364-3, Component Side
    C364-2, Component Side Ground

Is the resistance between 300 and 300,000 ohms between pins 2 and 3; and greater than 10,000 ohms between pin 2 and ground?
Yes GO to N14
No INSTALL a new driver seat cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to N15

N14 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the HVAC module connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the HVAC module connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-line C3136 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new HVAC module.
REFER to: Heating, Ventilation and Air Conditioning (HVAC) Control Module (412-00 Climate Control System - General Information, Removal and Installation).
GO to N15
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to N15

N15 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Driver Side Airbag In-line C3136.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST O: THE RIGHT HEATED SEAT IS INOPERATIVE — WITHOUT HEATED/VENTILATED SEATS

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
HVAC B1036:11 Right Front Seat Heater Element: Circuit Short To Ground Sets when the HVAC module senses the right front heater element current draw has exceeded a specified threshold. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.
HVAC B1036:15 Right Front Seat Heater Element: Circuit Short To Battery Or Open Sets when the HVAC module senses the right front heater element current draw is less than a specified threshold. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.
HVAC B103A:11 Right Front Seat Heater Sensor: Circuit Short To Ground Sets when the HVAC module senses the right front heater sensor voltage is out-of-range low. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.
HVAC B103A:15 Right Front Seat Heater Sensor: Circuit Short To Battery Or Open Sets when the HVAC module senses the right front heater sensor voltage is out-of-range high. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.

Possible Sources

  • Wiring, terminals or connectors
  • Heater mat
  • FCIMB
  • HVAC module

  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.

O1 CHECK FOR HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition OFF.
  • Ignition ON.
  • Using a diagnostic scan tool, perform HVAC module self-test.

Are any HVAC module Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B1036:11 or B1036:15, GO to O4
For DTC B103A:11 or B103A:15, GO to O6
For all other Diagnostic Trouble Codes (DTCs),
REFER to: Climate Control System (412-00 Climate Control System - General Information, Diagnosis and Testing).
No GO to O2

O2 CHECK THE FCIMB (FRONT CONTROLS INTERFACE MODULE B) HEATED SEAT CONTROL SWITCH PID (PARAMETER IDENTIFICATION)
  • Start the engine.

  • Access the  FCIMB  and monitor the  CC_SW_P_HSEATS  PID

  • Monitor the CC_SW_P_HSEATS PID while pressing and releasing the passenger heated seat control switch.

Did the PID change when the passenger heated seat control switch was pressed and released?
Yes GO to O3
No INSTALL a new FCIMB module.
REFER to: Front Controls Interface Module B (FCIMB) (415-00 Information and Entertainment System - General Information, Removal and Installation).

O3 CHECK THE HEATED SEAT VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect: HVAC Module C228B.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C228B-2   Ground

Is the voltage greater than 11 volts?
Yes GO to O4
No REPAIR the circuit.

O4 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C3137.
  • Disconnect: HVAC Module C228B (if not previously disconnected).
  • Disconnect: Right Front Seat Cushion Heater C334.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-1   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to O15
No GO to O5

O5 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-1   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-1   C228B-17

Is the resistance greater than 10,000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger seat cushion heater mat and the HVAC module?
Yes GO to O9
No REPAIR the circuit. GO to O15

O6 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR AN OPEN OR SHORT TO GROUND

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C3137.
  • Disconnect: HVAC Module C228B.
  • Disconnect: Right Front Seat Cushion Heater C334.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-2   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-2   C228B-15

Is the resistance greater than 10,000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger seat cushion heater mat and the HVAC module?
Yes GO to O7
No REPAIR the circuit. GO to O15

O7 CHECK THE HEATED SEAT TEMPERATURE SENSOR RETURN CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Disconnect: HVAC Module C228A.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-3   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-3   C228A-2

Is the resistance greater than 10,000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger seat cushion heater mat and the HVAC module?
Yes GO to O8
No REPAIR the open circuit or REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. GO to O15

O8 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-2   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to O15
No GO to O13

O9 CHECK THE HEATER ELEMENT GROUND CIRCUIT FOR AN OPEN
  • Disconnect: Right Front Seat Backrest Heater C335.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C335-2   Ground

Is the resistance less than 0.5 ohm?
Yes GO to O10
No REPAIR the circuit. GO to O15

O10 CHECK CUSHION HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    C334-1, Component Side C334-4, Component Side
    C334-1, Component Side Ground

Is the resistance between 0.6 and 2 ohms between pins 1 and 4; and greater than 10,000 ohms between pin 1 and ground?
Yes GO to O11
No INSTALL a new passenger seat cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to O15

O11 CHECK THE BACKREST HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    C335-1, Component Side C335-2, Component Side
    C335-2, Component Side Ground

Is the resistance between 0.6 and 2 ohms between pins 1 and 2; and greater than 10,000 ohms between pin 2 and ground?
Yes GO to O12
No INSTALL a new passenger seat backrest heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to O15

O12 CHECK THE CIRCUIT BETWEEN THE CUSHION HEATER MAT AND BACKREST HEATER MAT FOR AN OPEN AND SHORT TO GROUND
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-4   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-4   C335-1

Is the resistance greater than 10,000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger seat cushion heater mat and the backrest heater mat?
Yes GO to O14
No REPAIR the circuit. GO to O15

O13 CHECK THE HEATED SEAT TEMPERATURE SENSOR FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    C334-2, Component Side C334-3, Component Side
    C334-2, Component Side Ground

Is the resistance between 300 and 300,000 ohms between pins 2 and 3; and greater than 10,000 ohms between pin 2 and ground?
Yes GO to O14
No INSTALL a new driver seat cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to O15

O14 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the HVAC module connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the HVAC module connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Passenger Side Airbag In-line C3137 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes
CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new HVAC module.
REFER to: Heating, Ventilation and Air Conditioning (HVAC) Control Module (412-00 Climate Control System - General Information, Removal and Installation).
GO to O15
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to O15

O15 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Passenger Side Airbag In-line C3137.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST P: BOTH HEATED SEATS ARE INOPERATIVE — WITH HEATED/VENTILATED SEATS

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Possible Sources

  • Fuse
  • Wiring, terminals or connectors
  • FCIMB
  • HVAC module
  • SCME

Visual Inspection and Pre-checks

  • Verify the BJB fuse 38 (30A) is OK.
P1 CHECK THE FCIMB (FRONT CONTROLS INTERFACE MODULE B) HEATED SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)
  • Start the engine.

  • Access the  FCIMB  and monitor the  CC_SW_D_HSEATS  PID

  • Access the  FCIMB  and monitor the  CC_SW_P_HSEATS  PID

  • Monitor the CC_SW_D_HSEATS and CC_SW_P_HSEATS Parameter Identifications (PIDs) while pressing and releasing the driver and passenger heated seat control switches.

Do the Parameter Identifications (PIDs) change when the driver and passenger heated seat control switches are pressed and released?
Yes GO to P2
No INSTALL a new FCIMB module.
REFER to: Front Controls Interface Module B (FCIMB) (415-00 Information and Entertainment System - General Information, Removal and Installation).

P2 CHECK FOR SCME (FRONT SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition OFF.
  • Ignition ON.
  • Using a diagnostic scan tool, perform SCME self-test.

Are any SCME Diagnostic Trouble Codes (DTCs) present?
Yes REFER to the DTC Chart in this section.
No GO to P3

P3 CHECK THE HEATED SEAT VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect: DSM C341A.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341A-3   Ground

Is the voltage greater than 11 volts?
Yes GO to P4
No VERIFY BJB fuse 38 (30A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

P4 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the SCME connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCME connectors. Make sure they seat and latch correctly.
  • Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCME .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST Q: THE LEFT HEATED SEAT IS INOPERATIVE — WITH HEATED/VENTILATED SEATS

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCME B1153:4B Driver Seat Cushion: Over Temperature Sets when the SCME senses the left front cushion temperature has exceeded 110°C (230°F) for more than 4 seconds. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
SCME B1208:11 Driver Seat Cushion Temperature Sensor: Circuit Short To Ground Sets when the SCME senses the left front heater sensor voltage is out-of-range low. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
SCME B1208:15 Driver Seat Cushion Temperature Sensor: Circuit Short To Battery Or Open Sets when the SCME senses the left front heater sensor voltage is out-of-range high. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
SCME B1208:2A Driver Seat Cushion Temperature Sensor: Stuck in Range Sets when the SCME senses the left front heater sensor voltage is stuck in range. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
SCME B14B9:11 Driver Seat Cushion Thermal Electric Device: Circuit Short To Ground Sets when the SCME senses the left front heater element current draw has exceeded a specified threshold. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
SCME B14B9:12 Driver Seat Cushion Thermal Electric Device: Circuit Short To Battery Sets when the SCME senses the left front heater circuit voltage is above a specified threshold when the driver is active. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
SCME B14B9:13 Driver Seat Cushion Thermal Electric Device: Circuit Open Sets when the SCME senses the left front heater element current draw is less than a specified threshold. When this DTC sets, the SCME disables the circuit until the ignition is cycled.

Possible Sources

  • Wiring, terminals or connectors
  • Heater mat
  • FCIMB
  • HVAC module
  • SCME

  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.

Q1 CHECK THE FCIMB (FRONT CONTROLS INTERFACE MODULE B) HEATED SEAT CONTROL SWITCH PID (PARAMETER IDENTIFICATION)
  • Start the engine.

  • Access the  FCIMB  and monitor the  CC_SW_D_HSEATS  PID

  • Monitor the CC_SW_D_HSEATS PID while pressing and releasing the driver heated seat control switch.

Did the PID change when the driver heated seat control switch was pressed and released?
Yes GO to Q2
No INSTALL a new FCIMB module.
REFER to: Front Controls Interface Module B (FCIMB) (415-00 Information and Entertainment System - General Information, Removal and Installation).

Q2 CHECK FOR SCME (FRONT SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition OFF.
  • Ignition ON.
  • Using a diagnostic scan tool, perform SCME self-test.

Are any SCME Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B1153:4B, B1208:11, B1208:15 or B1208:2A, GO to Q6
For DTC B14B9:11, B14B9:12 or B14B9:13, GO to Q3
For all other Diagnostic Trouble Codes (DTCs), REFER to the DTC Chart in this section.
No GO to Q3

Q3 CHECK THE HEATED SEAT VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3136.
  • Disconnect: DSM C341A.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341A-3   Ground
      C341A-2   Ground

Is the voltage greater than 11 volts?
Yes GO to Q4
No REPAIR the affected circuit. GO to Q15

Q4 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3136 (if not previously disconnected).
  • Disconnect: DSM C341B and C341C.
  • Disconnect: Left Front Seat Cushion Heater C3313.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3313-1   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to Q15
No GO to Q5

Q5 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3313-1   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3313-1   C341B-3

Are the resistances greater than 10,000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the DSM ?
Yes GO to Q9
No REPAIR the affected circuit. GO to Q15

Q6 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR AN OPEN OR SHORT TO GROUND

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3136.
  • Disconnect: DSM C341B and C341C.
  • Disconnect: Left Front Seat Cushion Heater C3313.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3313-2   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3313-2   C341C-9

Is the resistance greater than 10,000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the DSM ?
Yes GO to Q7
No REPAIR the circuit. GO to Q15

Q7 CHECK THE HEATED SEAT TEMPERATURE SENSOR RETURN CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3313-3   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3313-3   C341C-10

Is the resistance greater than 10,000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the DSM ?
Yes GO to Q8
No REPAIR the open circuit or REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. GO to Q15

Q8 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3313-2   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to Q15
No GO to Q13

Q9 CHECK THE HEATER ELEMENT GROUND CIRCUIT FOR AN OPEN
  • Disconnect: Left Front Seat Backrest Heater C3314.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3314-2   C341B-2

Are the resistances less than 3 ohms?
Yes GO to Q10
No REPAIR the circuit in question. GO to Q15

Q10 CHECK THE CUSHION HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    C3313-1, Component Side C3313-4, Component Side
    C3313-1, Component Side Ground

Is the resistance between 0.6 and 2 ohms between pins 1 and 4; and greater than 10,000 ohms between pin 1 and ground?
Yes GO to Q11
No INSTALL a new driver seat cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to Q15

Q11 CHECK THE BACKREST HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    C3314-1, Component Side C3314-2, Component Side
    C3314-2, Component Side Ground

Is the resistance between 0.6 and 2 ohms between pins 1 and 2; and greater than 10,000 ohms between pin 2 and ground?
Yes GO to Q12
No INSTALL a new driver seat backrest heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to Q15

Q12 CHECK THE CIRCUIT BETWEEN THE CUSHION HEATER MAT AND BACKREST HEATER MAT FOR AN OPEN AND SHORT TO GROUND
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3313-4   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3313-4   C3314-1

Is the resistance greater than 10,000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the backrest heater mat?
Yes GO to Q14
No REPAIR the circuit. GO to Q15

Q13 CHECK THE HEATED SEAT TEMPERATURE SENSOR FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    C3313-2, Component Side C3313-3, Component Side
    C3313-2, Component Side Ground

Is the resistance between 300 and 300,000 ohms between pins 2 and 3; and greater than 10,000 ohms between pin 2 and ground?
Yes GO to Q14
No INSTALL a new driver seat cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to Q15

Q14 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-line C3136 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCME .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to Q15
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to Q15

Q15 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Driver Side Airbag In-line C3136.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST R: THE RIGHT HEATED SEAT IS INOPERATIVE — WITH HEATED/VENTILATED SEATS

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCME B1151:4B Passenger Seat Cushion: Over Temperature Sets when the SCME senses the right front cushion temperature has exceeded 110°C (230°F) for more than 4 seconds. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
SCME B120A:11 Passenger Seat Cushion Temperature Sensor: Circuit Short To Ground Sets when the SCME senses the right front heater sensor voltage is out-of-range low. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
SCME B120A:15 Passenger Seat Cushion Temperature Sensor: Circuit Short To Battery Or Open Sets when the SCME senses the right front heater sensor voltage is out-of-range high. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
SCME B120A:2A Passenger Seat Cushion Temperature Sensor: Stuck in Range Sets when the SCME senses the right front heater sensor voltage is stuck in range. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
SCME B14BB:11 Passenger Seat Cushion Thermal Electric Device: Circuit Short To Ground Sets when the SCME senses the right front heater element current draw has exceeded a specified threshold. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
SCME B14BB:12 Passenger Seat Cushion Thermal Electric Device: Circuit Short To Battery Sets when the SCME senses the right front heater circuit voltage is above a specified threshold when the driver is active. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
SCME B14BB:13 Passenger Seat Cushion Thermal Electric Device: Circuit Open Sets when the SCME senses the right front heater element current draw is less than a specified threshold. When this DTC sets, the SCME disables the circuit until the ignition is cycled.

Possible Sources

  • Wiring, terminals or connectors
  • Heater mat
  • FCIMB
  • HVAC module
  • SCME

  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.

R1 CHECK THE FCIMB (FRONT CONTROLS INTERFACE MODULE B) HEATED SEAT CONTROL SWITCH PID (PARAMETER IDENTIFICATION)
  • Start the engine.

  • Access the  FCIMB  and monitor the  CC_SW_P_HSEATS  PID

  • Monitor the CC_SW_P_HSEATS PID while pressing and releasing the passenger heated seat control switch.

Did the PID change when the passenger heated seat control switch was pressed and released?
Yes GO to R2
No INSTALL a new FCIMB module.
REFER to: Front Controls Interface Module B (FCIMB) (415-00 Information and Entertainment System - General Information, Removal and Installation).

R2 CHECK FOR SCME (FRONT SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition OFF.
  • Ignition ON.
  • Using a diagnostic scan tool, perform SCME self-test.

Are any SCME Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B1151:4B, B120A:01, B120A:11, B120A:15 or B120A:2A, GO to R6
For DTC B14BB:11, B14BB:12 or B14BB:13, GO to R3
For all other Diagnostic Trouble Codes (DTCs), REFER to the DTC Chart in this section.
No GO to R3

R3 CHECK THE HEATED SEAT VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3136.
  • Disconnect: DSM C341A.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341A-3   Ground

Is the voltage greater than 11 volts?
Yes GO to R4
No REPAIR the circuit in question. GO to R15

R4 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3136 (if not previously disconnected).
  • Disconnect: Passenger Side Airbag In-line C3137.
  • Disconnect: DSM C341B and C341C.
  • Disconnect: Right Front Seat Cushion Heater C3315.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3315-1   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to R15
No GO to R5

R5 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3315-1   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3315-1   C341B-5

Are the resistances greater than 10,000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger seat cushion heater mat and the DSM ?
Yes GO to R9
No REPAIR the affected circuit. GO to R15

R6 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR AN OPEN OR SHORT TO GROUND

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3136.
  • Disconnect: Passenger Side Airbag In-line C3137.
  • Disconnect: DSM C341B and C341C.
  • Disconnect: Right Front Seat Cushion Heater C3302.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3315-2   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3315-2   C341C-7

Is the resistance greater than 10,000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger seat cushion heater mat and the DSM ?
Yes GO to R7
No REPAIR the circuit. GO to R15

R7 CHECK THE HEATED SEAT TEMPERATURE SENSOR RETURN CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3315-3   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3315-3   C341C-20

Is the resistance greater than 10,000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger seat cushion heater mat and the DSM ?
Yes GO to R8
No REPAIR the open circuit or REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. GO to R15

R8 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3315-2   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to R15
No GO to R13

R9 CHECK THE HEATER ELEMENT GROUND CIRCUIT FOR AN OPEN
  • Disconnect: Right Front Seat Backrest Heater C3316.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3316-2   C341B-4

Are the resistances less than 3 ohms?
Yes GO to R10
No REPAIR the affected circuit. GO to R15

R10 CHECK CUSHION HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    C3315-1, Component Side C3315-4, Component Side
    C3315-1, Component Side Ground

Is the resistance between 0.6 and 2 ohms between pins 1 and 4; and greater than 10,000 ohms between pin 1 and ground?
Yes GO to R11
No INSTALL a new passenger seat cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to R15

R11 CHECK THE BACKREST HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    C3316-1, Component Side C3316-2, Component Side
    C3316-2, Component Side Ground

Is the resistance between 0.6 and 2 ohms between pins 1 and 2; and greater than 10,000 ohms between pin 2 and ground?
Yes GO to R12
No INSTALL a new passenger seat backrest heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to R15

R12 CHECK THE CIRCUIT BETWEEN THE CUSHION HEATER MAT AND BACKREST HEATER MAT FOR AN OPEN AND SHORT TO GROUND
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3315-4   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3315-4   C3316-1

Is the resistance greater than 10,000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger seat cushion heater mat and the backrest heater mat?
Yes GO to R14
No REPAIR the circuit. GO to R15

R13 CHECK THE HEATED SEAT TEMPERATURE SENSOR FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    C3315-2, Component Side C3315-3, Component Side
    C3315-2, Component Side Ground

Is the resistance between 300 and 300,000 ohms between pins 2 and 3; and greater than 10,000 ohms between pin 2 and ground?
Yes GO to R14
No INSTALL a new driver seat cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to R15

R14 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Passenger Side Airbag In-line C3137 or Driver Side Airbag In-line C3136 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes
CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCME .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to R15
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to R15

R15 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Driver Side Airbag In-line C3136.
  • Connect: Passenger Side Airbag In-line C3137.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST S: BOTH HEATED/VENTILATED SEATS ARE INOPERATIVE

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Possible Sources

  • Wiring, terminals or connectors
  • FCIMB
  • HVAC module
  • SCME
S1 CHECK THE HEATED SEAT OPERATION
  • Start the engine.
  • Attempt to operate the heated seats using the FCIMB module buttons.

Did the heated seats operate correctly?
Yes GO to S2
No DIAGNOSE the inoperative heated seats. GO to Pinpoint Test P

S2 CHECK THE FCIMB (FRONT CONTROLS INTERFACE MODULE B) VENTILATED SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)

  • Access the  FCIMB  and monitor the  CC_SW_D_CL_S  PID

  • Access the  FCIMB  and monitor the  CC_SW_P_CL_S  PID

  • Monitor the CC_SW_D_CL_S and CC_SW_P_CL_S Parameter Identifications (PIDs) while pressing and releasing the driver and passenger ventilated seat control switches.

Do the Parameter Identifications (PIDs) change when the driver and passenger ventilated seat control switches are pressed and released?
Yes GO to S3
No INSTALL a new FCIMB module.
REFER to: Front Controls Interface Module B (FCIMB) (415-00 Information and Entertainment System - General Information, Removal and Installation).

S3 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCME .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST T: THE DRIVER HEATED/VENTILATED SEAT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCME B14BD:11 Driver Seat Cushion Blower: Circuit Short To Ground If the current to the driver seat cushion blower exceeds a programmed threshold, the SCME shuts down the driver seat system and sets this DTC .
SCME B14BD:13 Driver Seat Cushion Blower: Circuit Open If the current to the driver seat cushion blower exceeds a programmed threshold, the SCME shuts down the driver seat system and sets this DTC .
SCME B1562:11 Driver Seat Back Blower Speed: Circuit Short To Ground If the driver seat backrest blower speed control circuit is shorted to ground, the SCME sets this DTC .
SCME B1562:12 Driver Seat Back Blower Speed: Circuit Short To Battery If the driver seat backrest blower speed control circuit is shorted to voltage, the SCME sets this DTC .
SCME B1564:11 Driver Seat Cushion Blower Speed: Circuit Short To Ground If the driver seat cushion blower speed control circuit is shorted to ground, the SCME sets this DTC .
SCME B1564:12 Driver Seat Cushion Blower Speed: Circuit Short To Battery If the driver seat cushion blower speed control circuit is shorted to voltage, the SCME sets this DTC .

Possible Sources

  • Wiring, terminals or connectors
  • Cushion blower motor
  • Backrest blower motor
  • FCIMB
  • HVAC module
  • SCME
T1 CHECK THE DRIVER HEATED SEAT OPERATION
  • Start the engine.
  • Attempt to operate the driver heated seat using the HVAC module buttons.

Does the driver heated seat operate correctly?
Yes GO to T2
No DIAGNOSE the inoperative driver heated seat. GO to Pinpoint Test Q

T2 CHECK THE FCIMB (FRONT CONTROLS INTERFACE MODULE B) VENTILATED SEAT CONTROL SWITCH PID (PARAMETER IDENTIFICATION)

  • Access the  FCIMB  and monitor the  CC_SW_D_CL_S  PID

  • Monitor the CC_SW_D_CL_S PID while pressing and releasing the driver ventilated seat control switch.

Did the PID change when the driver ventilated seat control switch was pressed and released?
Yes GO to T3
No INSTALL a new FCIMB module.
REFER to: Front Controls Interface Module B (FCIMB) (415-00 Information and Entertainment System - General Information, Removal and Installation).

T3 CHECK THE BLOWER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3136.
  • Disconnect: DSM C341B and C341C.
  • Disconnect: Left Front Seat Cushion Blower Motor C3035.
  • Disconnect: Left Front Seat Backrest Blower Motor C3033.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-14   Ground
      C341B-16   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-18   Ground
      C341C-19   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to T8
No GO to T4

T4 CHECK THE BLOWER MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-14   Ground
      C341B-16   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-18   Ground
      C341C-19   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to T5
No REPAIR the affected circuit. GO to T8

T5 CHECK THE BLOWER MOTOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-16   C3035-1
      C341B-14   C3035-3
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-16   C3033-1
      C341B-14   C3033-3
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-19   C3035-2
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-18   C3033-2

Are the resistances less than 3 ohms?
Yes If only the backrest blower did not operate correctly, INSTALL a new backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
GO to T6
If only the cushion blower did not operate correctly, INSTALL a new cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
GO to T6
If both the cushion and backrest blower motors did not operate correctly, GO to T7
No REPAIR the affected circuit. GO to T8

T6 CHECK THE BLOWER MOTOR OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-line C3136 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCME .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to T8
No GO to T8

T7 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-line C3136 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes
CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCME .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to T8
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to T8

T8 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Driver Side Airbag In-line C3136.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST U: THE PASSENGER HEATED/VENTILATED SEAT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCME B14C0:11 Passenger Seat Cushion Blower: Circuit Short To Ground If the current to the passenger seat cushion blower exceeds a programmed threshold, the SCME shuts down the passenger seat system and sets this DTC .
SCME B14C0:13 Passenger Seat Cushion Blower: Circuit Open If the current to the passenger seat cushion blower exceeds a programmed threshold, the SCME shuts down the passenger seat system and sets this DTC .
SCME B1563:11 Passenger Seat Back Blower Speed: Circuit Short To Ground If the passenger seat backrest blower speed control circuit is shorted to ground, the SCME sets this DTC .
SCME B1563:12 Passenger Seat Back Blower Speed: Circuit Short To Battery If the passenger seat backrest blower speed control circuit is shorted to voltage, the SCME sets this DTC .
SCME B1565:11 Passenger Seat Cushion Blower Speed: Circuit Short To Ground If the passenger seat cushion blower speed control circuit is shorted to ground, the SCME sets this DTC .
SCME B1565:12 Passenger Seat Cushion Blower Speed: Circuit Short To Battery If the passenger seat cushion blower speed control circuit is shorted to voltage, the SCME sets this DTC .

Possible Sources

  • Wiring, terminals or connectors
  • Cushion blower motor
  • Backrest blower motor
  • FCIMB
  • HVAC module
  • SCME
U1 CHECK THE PASSENGER HEATED SEAT OPERATION
  • Start the engine.
  • Attempt to operate the passenger heated seat using the HVAC module buttons.

Did the passenger heated seat operate correctly?
Yes GO to U2
No DIAGNOSE the inoperative passenger heated seat. GO to Pinpoint Test R

U2 CHECK THE FCIMB (FRONT CONTROLS INTERFACE MODULE B) VENTILATED SEAT CONTROL SWITCH PID (PARAMETER IDENTIFICATION)

  • Access the  FCIMB  and monitor the  CC_SW_D_CL_S  PID

  • Access the  FCIMB  and monitor the  CC_SW_P_CL_S  PID

  • Monitor the CC_SW_P_CL_S PID while pressing and releasing the passenger ventilated seat control switch.

Did the PID change when the passenger ventilated seat control switch was pressed and released?
Yes GO to U3
No INSTALL a new HVAC module.
REFER to: Heating, Ventilation and Air Conditioning (HVAC) Control Module (412-00 Climate Control System - General Information, Removal and Installation).

U3 CHECK THE BLOWER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3136.
  • Disconnect: Passenger Side Airbag In-line C3137.
  • Disconnect: DSM C341B and C341C.
  • Disconnect: Right Front Seat Cushion Blower Motor C3036.
  • Disconnect: Right Front Seat Backrest Blower Motor C3034.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-13   Ground
      C341B-15   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-16   Ground
      C341C-17   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to U8
No GO to U4

U4 CHECK THE BLOWER MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-13   Ground
      C341B-15   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-16   Ground
      C341C-17   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to U5
No REPAIR the affected circuit. GO to U8

U5 CHECK THE BLOWER MOTOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-15   C3036-1
      C341B-13   C3036-3
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-15   C3034-1
      C341B-13   C3034-3
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-16   C3034-2
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-17   C3036-2

Are the resistances less than 3 ohms?
Yes If only the backrest blower did not operate correctly, INSTALL a new backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
GO to U6
If only the cushion blower did not operate correctly, INSTALL a new cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
GO to U6
If both the cushion and backrest blower motors did not operate correctly, GO to U7
No REPAIR the affected circuit. GO to U8

U6 CHECK THE BLOWER MOTOR OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-line C3136 or Passenger Side Airbag In-line C3137 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCME .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to U8
No GO to U8

U7 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-line C3136 or Passenger Side Airbag In-line C3137 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes
CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCME .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to U8
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to U8

U8 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Driver Side Airbag In-line C3136.
  • Connect: Passenger Side Airbag In-line C3137.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST V: DTC: U0140:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The DSM / SCMB and the BCM communicate using the MS-CAN .

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
DSM U0140:00 Lost Communication With Body Control Module: No Sub Type Information Set by the DSM whenever it has lost communication to the BCM for 5 seconds or longer while DSM input voltage is between 10 and 15.5 volts.
SCMB U0140:00 Lost Communication With Body Control Module: No Sub Type Information Set by the SCMB whenever it has lost communication to the BCM for 5 seconds or longer while SCMB input voltage is between 10 and 15.5 volts.

Possible Sources

  • Module communication
  • DSM / SCMB
  • BCM
V1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to V2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

V2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the BCM pass the network test?
Yes GO to V3
No
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

V3 RECHECK THE DSM (DRIVER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the DSM / SCMB self-test.

Is DTC U0140:00 still present?
Yes GO to V4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

V4 CHECK FOR DTC U0140:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0140:00 set in other modules?
Yes INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No INSTALL a new DSM or SCMB .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

PINPOINT TEST W: DTC: U0100:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The DSM / SCMB and the PCM communicate using the HS-CAN1 and MS-CAN .

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
DSM U0100:00 Lost Communication With ECM/PCM 'A': No Sub Type Information Set by the DSM whenever it has lost communication to the PCM for 5 seconds or longer while DSM input voltage is between 10 and 15.5 volts.
SCMB U0100:00 Lost Communication With ECM/PCM 'A': No Sub Type Information Set by the SCMB whenever it has lost communication to the PCM for 5 seconds or longer while SCMB input voltage is between 10 and 15.5 volts.

Possible Sources

  • Module communication
  • DSM or SCMB
  • PCM
W1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to W2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

W2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the PCM pass the network test?
Yes GO to W3
No
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

W3 RECHECK THE DSM (DRIVER FRONT SEAT MODULE) / SCMB (PASSENGER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the DSM / SCMB self-test.

Is DTC U0100:00 still present?
Yes GO to W4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

W4 CHECK FOR DTC U0100:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0100:00 set in other modules?
Yes
   VIN required to access Guided Routine (PCM)
No INSTALL a new DSM or SCMB .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

PINPOINT TEST X: DTC: U0140:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The SCME and the BCM communicate using the MS-CAN .

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCME U0140:00 Lost Communication With Body Control Module: No Sub Type Information Set by the SCME whenever it has lost communication to the BCM for 5 seconds or longer while SCME input voltage is between 10 and 15.5 volts.

Possible Sources

  • Module communication
  • SCME
  • BCM
X1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to X2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

X2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the BCM pass the network test?
Yes GO to X3
No
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

X3 RECHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the SCME self-test.

Is DTC U0140:00 still present?
Yes GO to X4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

X4 CHECK FOR DTC U0140:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0140:00 set in other modules?
Yes INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No INSTALL a new SCME .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

PINPOINT TEST Y: DTC: U0257:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The SCME and the FCIMB communicate using the CAN .

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCME U0257:00 Lost Communication With Front Controls / Display Interface Module: No Sub Type Information Set by the SCME whenever it has lost communication to the FCIMB while SCME input voltage is between 10 and 15.5 volts.

Possible Sources

  • Module communication
  • FCIMB
  • SCME
Y1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to Y2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

Y2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the FCIMB module pass the network test?
Yes GO to Y3
No
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

Y3 RECHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the SCME self-test.

Is DTC U0257:00 still present?
Yes GO to Y4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

Y4 CHECK FOR DTC U0257:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0257:00 set in other modules?
Yes INSTALL a new FCIMB module.
REFER to: Front Controls Interface Module B (FCIMB) (415-00 Information and Entertainment System - General Information, Removal and Installation).
No INSTALL a new SCME .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

PINPOINT TEST Z: DTC: U0140:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The SCMG and SCMH communicate to the BCM using the MS-CAN .

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMG U0140:00 Lost Communication With Body Control Module: No Sub Type Information Set by the SCMG whenever it has lost communication to the BCM for 5 seconds or longer while the SCMG input voltage is between 10 and 15.5 volts.
SCMH U0140:00 Lost Communication With Body Control Module: No Sub Type Information Set by the SCMH whenever it has lost communication to the BCM for 5 seconds or longer while the SCMG SCMH input voltage is between 10 and 15.5 volts.

Possible Sources

  • Module communication
  • SCMG / SCMH
  • BCM
Z1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to Z2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

Z2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the BCM pass the network test?
Yes GO to Z3
No
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

Z3 RECHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) / SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the SCMG / SCMH self-test.

Is DTC U0140:00 still present?
Yes GO to Z4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

Z4 CHECK FOR DTC U0140:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0140:00 set in other modules?
Yes INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No INSTALL a new SCMG or SCMH .
REFER to: Driver Multi-Contour Seat Module [SCMG] - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

PINPOINT TEST AA: DTC: U0208:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The SCMG / SCMH and DSM communicate using the MS-CAN .

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMG U0208:00 Lost Communication With 'Seat Control Module A': No Sub Type Information Set by the SCMG whenever it has lost communication to the DSM for 5 seconds or longer while the SCMG input voltage is between 10 and 15.5 volts.
SCMH U0208:00 Lost Communication With 'Seat Control Module A': No Sub Type Information Set by the SCMH whenever it has lost communication to the DSM for 5 seconds or longer while the SCMG SCMH input voltage is between 10 and 15.5 volts.

Possible Sources

  • Module communication
  • SCMG / SCMH
  • DSM
AA1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to AA2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AA2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the DSM pass the network test?
Yes GO to AA3
No
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

AA3 RECHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) / SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the SCMG / SCMH self-test.

Is DTC U0208:00 still present?
Yes GO to AA4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AA4 CHECK FOR DTC U0208:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0208:00 set in other modules?
Yes INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
No INSTALL a new SCMG or SCMH .
REFER to: Driver Multi-Contour Seat Module [SCMG] - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

PINPOINT TEST AB: DTC: U024B:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The SCMH communicates to the SCMG using the CAN .

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMH U024B:00 Lost Communication with Seat Control Module 'G': No Sub Type Information Set by the SCMH whenever it has lost communication to the SCMG for 5 seconds or longer while the SCMH input voltage is between 10 and 15.5 volts.

Possible Sources

  • Module communication
  • SCMG
  • SCMH
AB1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to AB2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AB2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the SCMG pass the network test?
Yes GO to AB3
No
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

AB3 RECHECK THE SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the SCMH self-test.

Is DTC U024B:00 still present?
Yes GO to AB4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AB4 CHECK FOR DTC U024B:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U024B:00 set in other modules?
Yes INSTALL a new SCMG .
REFER to: Driver Multi-Contour Seat Module [SCMG] - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
No INSTALL a new SCMH .
REFER to: Driver Multi-Contour Seat Module [SCMG] - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

PINPOINT TEST AC: DTC: U0253:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The SCMG and SCMH communicate to the APIM using the CAN .

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMG U0253:00 Lost Communication With Accessory Protocol Interface Module: No Sub Type Information Set by the SCMG whenever it has lost communication to the APIM for 5 seconds or longer while the SCMG input voltage is between 10 and 15.5 volts.
SCMH U0253:00 Lost Communication With Accessory Protocol Interface Module: No Sub Type Information Set by the SCMH whenever it has lost communication to the APIM for 5 seconds or longer while the SCMH input voltage is between 10 and 15.5 volts.

Possible Sources

  • Module communication
  • SCMG / SCMH
  • APIM
AC1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to AC2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AC2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the APIM pass the network test?
Yes GO to AC3
No
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

AC3 RECHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) / SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the SCMG / SCMH self-test.

Is DTC U0253:00 still present?
Yes GO to AC4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AC4 CHECK FOR DTC U0253:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0253:00 set in other modules?
Yes INSTALL a new APIM . Refer to the appropriate section in Group 415 for the procedure.
No INSTALL a new SCMG or SCMH .
REFER to: Driver Multi-Contour Seat Module [SCMG] - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

PINPOINT TEST AD: DTC: U0256:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The SCMG and SCMH communicate to the FCIMB using the CAN .

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMG U0256:00 Lost Communication With Front Controls Interface Module 'A': No Sub Type Information Set by the SCMG whenever it has lost communication to the FCIMB for 5 seconds or longer while the SCMG input voltage is between 10 and 15.5 volts.
SCMH U0256:00 Lost Communication With Front Controls Interface Module 'A': No Sub Type Information Set by the SCMH whenever it has lost communication to the FCIMB for 5 seconds or longer while the SCMH input voltage is between 10 and 15.5 volts.

Possible Sources

  • Module communication
  • SCMG / SCMH
  • FCIMB
AD1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to AD2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AD2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the FCIMB pass the network test?
Yes GO to AD3
No
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

AD3 RECHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) / SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the SCMG / SCMH self-test.

Is DTC U0256:00 still present?
Yes GO to AD4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AD4 CHECK FOR DTC U0256:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0256:00 set in other modules?
Yes INSTALL a new FCIMB .
REFER to: Front Controls Interface Module B (FCIMB) (415-00 Information and Entertainment System - General Information, Removal and Installation).
No INSTALL a new SCMG or SCMH .
REFER to: Driver Multi-Contour Seat Module [SCMG] - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

PINPOINT TEST AE: DTC: U0422:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The SCMG and SCMH communicate to the BCM using the CAN .

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMG U0422:00 Invalid Data Received From Body Control Module: No Sub Type Information Set by the SCMG whenever it has received an unknown ignition status from the BCM .
SCMH U0422:00 Invalid Data Received From Body Control Module: No Sub Type Information Set by the SCMH whenever it has received an unknown ignition status from the BCM .

Possible Sources

  • Module communication
  • SCMG / SCMH
  • BCM
AE1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to AE2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AE2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the BCM pass the network test?
Yes GO to AE3
No
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

AE3 RECHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) / SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the SCMG / SCMH self-test.

Is DTC U0422:00 still present?
Yes GO to AE4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AE4 CHECK FOR DTC U0422:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0422:00 set in other modules?
Yes INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No INSTALL a new SCMG or SCMH .
REFER to: Driver Multi-Contour Seat Module [SCMG] - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

PINPOINT TEST AF: DTC: U0455:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The SCMG and SCMH communicate to the OCSM using the CAN .

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMG U0455:00 Invalid Data Received From Restraints Occupant Classification System Module 'A': No Sub Type Information Set by the SCMG whenever it has received an invalid status from the OCSM .
SCMH U0455:00 Invalid Data Received From Restraints Occupant Classification System Module 'A': No Sub Type Information Set by the SCMH whenever it has received an invalid status from the OCSM .

Possible Sources

  • Module communication
  • SCMG / SCMH
  • OCSM
AF1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to AF2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AF2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the OCSM pass the network test?
Yes GO to AF3
No
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

AF3 RECHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) / SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the SCMG / SCMH self-test.

Is DTC U0455:00 still present?
Yes GO to AF4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AF4 CHECK FOR DTC U0455:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0455:00 set in other modules?
Yes INSTALL a new OCSM .
REFER to: Occupant Classification System (OCS) Sensor (501-20B Supplemental Restraint System, Removal and Installation).
No INSTALL a new SCMG or SCMH .
REFER to: Driver Multi-Contour Seat Module [SCMG] - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

PINPOINT TEST AG: DTC: U0199:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The DSM communicates to the DDM using the CAN .

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
DSM U0199:00 Lost Communication With 'Door Control Module A': No Sub Type Information Set by the DSM whenever it has lost communication to the DDM module for 5 seconds or longer while the DSM input voltage is between 10 and 15.5 volts.

Possible Sources

  • Module communication
  • DSM
  • DDM
AG1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to AG2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AG2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the DDM pass the network test?
Yes GO to AG3
No
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

AG3 RECHECK THE DSM (DRIVER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the DSM self-test.

Is DTC U0199:00 still present?
Yes GO to AG4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AG4 CHECK FOR DTC U0199:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0199:00 set in other modules?
Yes INSTALL a new DDM .
REFER to: Driver Door Module (DDM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

PINPOINT TEST AH: DTC: U0253:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The DSM / SCMB communicates to the APIM using the CAN .

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
DSM U0253:00 Lost Communication With Accessory Protocol Interface Module: No Sub Type Information Set by the DSM whenever it has lost communication to the APIM for 5 seconds or longer while the DSM input voltage is between 10 and 15.5 volts.
SCMB U0253:00 Lost Communication With Accessory Protocol Interface Module: No Sub Type Information Set by the SCMB whenever it has lost communication to the APIM for 5 seconds or longer while the SCMB input voltage is between 10 and 15.5 volts.

Possible Sources

  • Module communication
  • DSM / SCMB
  • APIM
AH1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to AH2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AH2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the APIM pass the network test?
Yes GO to AH3
No
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

AH3 RECHECK THE DSM (DRIVER FRONT SEAT MODULE) / SCMB (PASSENGER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the DSM / SCMB self-test.

Is DTC U0253:00 still present?
Yes GO to AH4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AH4 CHECK FOR DTC U0253:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0253:00 set in other modules?
Yes INSTALL a new APIM . Refer to the appropriate section in Group 415 for the procedure.
No INSTALL a new DSM DSM or SCMB .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

PINPOINT TEST AI: DTC: U3500:17

Refer to Wiring Diagrams Cell 120 for schematic and connector information. Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The DSM / SCMB continuously monitors the input voltage for correct operation. If the DSM / SCMB detects input voltage greater than 17 volts, it stores DTC U3500:17 in memory.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
DSM U3500:17 Control Module Input Power 'A' Circuit Range/Performance: Circuit Voltage Above Threshold Set by the DSM whenever the DSM input voltage is greater than 17 volts. If DTC U3500:17 is set, the DSM disables the motor outputs for the driver seat.
SCMB U3500:17 Control Module Input Power 'A' Circuit Range/Performance: Circuit Voltage Above Threshold Set by the SCMB whenever the SCMB input voltage is greater than 17 volts. If DTC U3500:17 is set, the SCMB disables the motor outputs for the passenger seat.

Possible Sources

  • Battery charging system
AI1 CHECK THE CHARGING SYSTEM VOLTAGE

NOTE: DTC U3500:17, B1317, B1318, B2486, B1676, U3003:16 or U3003:17 can be set if the vehicle has been recently jump started, the battery has been recently charged or the battery has been discharged. The battery may become discharged due to excessive load(s) on the charging system from aftermarket accessories or if the battery has been left unattended with the accessories on.

NOTE: Do not allow the engine speed to increase above 2,000 rpm while performing this step or the generator may self-excite and result in default charging system output voltage. If engine speed goes above 2,000 rpm, shut the vehicle OFF and restart the engine before performing this step.

  • Start the engine.
  • Measure the voltage of the battery with and without a load on the charging system as follows:
    • Turn off all accessories and run the engine at 1,500 rpm for a minimum of 2 minutes while measuring battery voltage.
    • Turn on headlights and HVAC fan on high and run engine at 1,500 rpm for a minimum of 2 minutes while measuring battery voltage.

Are the voltages between 13 and 15.2 volts?
Yes CLEAR the Diagnostic Trouble Codes (DTCs). TEST the system for normal operation.
No DIAGNOSE the vehicle charging system.
REFER to: Battery (414-01 Battery, Mounting and Cables, Diagnosis and Testing).

PINPOINT TEST AJ: DTC: U2100:00

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Using a diagnostic scan tool, CARRY OUT PMI on the DSM / SCMB . REPEAT the self-test and VERIFY successful PMI . CLEAR the Diagnostic Trouble Codes (DTCs).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
DSM U2100:00 Initial Configuration Not Complete: No Sub Type Information This DTC indicates PMI has not been done to a newly installed module or configuration data has been lost.
SCMB U2100:00 Initial Configuration Not Complete: No Sub Type Information This DTC indicates PMI has not been done to a newly installed module or configuration data has been lost.

Possible Sources

  • PMI has not been done to a newly installed module or configuration data has been lost.
Diagnostic steps are not provided for this symptom or DTC.  REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
PINPOINT TEST AK: DTC: U3000:49

Refer to Wiring Diagrams Cell 120 for schematic and connector information. Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

INSTALL a new DSM . REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
DSM U3000:49 Control Module: Internal Electronic Failure This DTC indicates there is an internal failure in the module. The module must be replaced.
SCME U3000:49 Control Module: Internal Electronic Failure This DTC indicates there is an internal failure in the module. The module must be replaced.

Possible Sources

  • DSM
Diagnostic steps are not provided for this symptom or DTC.  REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
PINPOINT TEST AL: DTC: U1000:00

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DIAGNOSE any other DSM and SCME Diagnostic Trouble Codes (DTCs) first. CLEAR the Diagnostic Trouble Codes (DTCs). REPEAT the self-test. If DTC U1000:00 returns, INSTALL a new DSM . REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCME U1000:00 Solid State Driver Protection Active -Driver Disabled: No Sub Type Information This DTC indicates there is an internal failure in the module. The module must be replaced.

Possible Sources

  • DSM
Diagnostic steps are not provided for this symptom or DTC.  REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
PINPOINT TEST AM: DTC: U2100:00

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Using a diagnostic scan tool, CARRY OUT PMI on the SCME . REPEAT the self-test and VERIFY successful PMI . CLEAR the Diagnostic Trouble Codes (DTCs).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCME U2100:00 Initial Configuration Not Complete: No Sub Type Information This DTC indicates PMI has not been done to a newly installed module or configuration data has been lost.

Possible Sources

  • PMI has not been done to a newly installed module or configuration data has been lost.
Diagnostic steps are not provided for this symptom or DTC.  REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
PINPOINT TEST AN: DTC: U1000:00

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DIAGNOSE any other related SCMG / SCMH Diagnostic Trouble Codes (DTCs) first. CLEAR the Diagnostic Trouble Codes (DTCs). REPEAT the self-test. If DTC U1000:00 returns, INSTALL a new SCMG / SCMH . REFER to: Driver Multi-Contour Seat Module [SCMG] - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMG U1000:00 Solid State Driver Protection Active -Driver Disabled: No Sub Type Information This DTC indicates there is an internal failure in the module. The module must be replaced.
SCMH U1000:00 Solid State Driver Protection Active -Driver Disabled: No Sub Type Information This DTC indicates there is an internal failure in the module. The module must be replaced.

Possible Sources

  • SCMG / SCMH
Diagnostic steps are not provided for this symptom or DTC.  REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
PINPOINT TEST AO: DTC: U2100:00

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Using a diagnostic scan tool, CARRY OUT PMI on the SCMG / SCMH . REPEAT the self-test and VERIFY successful PMI .

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMG U2100:00 Initial Configuration Not Complete: No Sub Type Information This DTC indicates PMI has not been done to a newly installed module or configuration data has been lost.
SCMH U2100:00 Initial Configuration Not Complete: No Sub Type Information This DTC indicates PMI has not been done to a newly installed module or configuration data has been lost.

Possible Sources

  • PMI has not been done to a newly installed module or configuration data has been lost.
Diagnostic steps are not provided for this symptom or DTC.  REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
PINPOINT TEST AP: DTC: U3000:49

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

INSTALL a new SCMG / SCMH . REFER to: Driver Multi-Contour Seat Module [SCMG] - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMG U3000:49 Control Module: Internal Electronic Failure This DTC indicates there is an internal failure in the module. The module must be replaced.
SCMH U3000:49 Control Module: Internal Electronic Failure This DTC indicates there is an internal failure in the module. The module must be replaced.

Possible Sources

  • SCMG / SCMH
Diagnostic steps are not provided for this symptom or DTC.  REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
PINPOINT TEST AQ: DTC: U2013:24

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Using a diagnostic scan tool, CLEAR the Diagnostic Trouble Codes (DTCs). TEST the system for normal operation from the driver seat control switch. If any individual switches within the driver seat control switch are inoperative or the DTC returns, INSTALL a new seat control switch. REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
DSM B1067:24 Lumbar In Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B1068:24 Lumbar Out Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B14C3:24 Seat Height Rear Down Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B14C4:24 Seat Height Rear Up Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B1527:24 Left Cushion Fore Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B1528:24 Left Cushion Aft Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B1529:24 Right Cushion Fore Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B152A:24 Right Cushion Aft Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B1B96:24 Seat Slide Forward Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B1B97:24 Seat Slide Backward Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B1B98:24 Seat Tilt Up Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B1B99:24 Seat Tilt Down Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B1C00:24 Seat Recline Up Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B1C01:24 Seat Recline Down Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM U2013:24 Switch Pack: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.

Possible Sources

  • Seat control switch active during self-test
  • Seat control switch
Diagnostic steps are not provided for this symptom or DTC.  REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
PINPOINT TEST AR: DTC: U2013:24

Refer to Wiring Diagrams Cell 120 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Using a diagnostic scan tool, CLEAR the Diagnostic Trouble Codes (DTCs). TEST the system for normal operation from the driver seat control switch. If any individual switches within the driver seat control switch are inoperative or the DTC returns, INSTALL a new seat control switch. REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMB B1067:24 Lumbar In Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B1068:24 Lumbar Out Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B14C3:24 Seat Height Rear Down Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B14C4:24 Seat Height Rear Up Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B1527:24 Left Cushion Fore Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B1528:24 Left Cushion Aft Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B1529:24 Right Cushion Fore Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B152A:24 Right Cushion Aft Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B1B96:24 Seat Slide Forward Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B1B97:24 Seat Slide Backward Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B1B98:24 Seat Tilt Up Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B1B99:24 Seat Tilt Down Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B1C00:24 Seat Recline Up Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B1C01:24 Seat Recline Down Switch: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB U2013:24 Switch Pack: Signal Stuck High This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.

Possible Sources

  • Seat control switch active during self-test
  • Seat control switch
Diagnostic steps are not provided for this symptom or DTC.  REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
PINPOINT TEST AS: DTC: U3000:49

Refer to Wiring Diagrams Cell 120 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

INSTALL a new SCMB . REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMB U3000:49 Control Module: Internal Electronic Failure This DTC indicates there is an internal failure in the module. The module must be replaced.

Possible Sources

  • SCMB
Diagnostic steps are not provided for this symptom or DTC.  REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
PINPOINT TEST AT: DTC: B1087:83 OR B1087:87

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
DSM B1087:83 LIN Bus 'A': Value Of Signal Protection Calculation Incorrect Sets by the DSM when a loss of communication has been detected from the driver seat control switch.
DSM B1087:87 LIN Bus 'A': Missing Message Sets by the DSM when a loss of communication has been detected from the driver seat control switch.

Possible Sources

  • Fuse
  • Wiring, terminals or connectors
  • Seat control switch
  • DSM

Visual Inspection and Pre-checks

  • Verify BCM fuse 18 (7.5A) is OK.

  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.

AT1 CHECK FOR VOLTAGE TO THE SEAT CONTROL SWITCH
  • Ignition OFF.
  • Disconnect: Driver Seat Control Switch C508.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C508-1   Ground

Is the voltage greater than 11 volts?
Yes GO to AT2
No VERIFY BCM fuse 18 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

AT2 CHECK THE SEAT CONTROL SWITCH GROUND CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C508-8   Ground

Is the resistance less than 3 ohms?
Yes GO to AT3
No REPAIR the circuit.

AT3 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) FOR A SHORT TO VOLTAGE BETWEEN THE SEAT CONTROL SWITCH AND DSM (DRIVER FRONT SEAT MODULE)

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3136.
  • Disconnect: DSM C341C.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C508-3   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to AT7
No GO to AT4

AT4 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) FOR A SHORT TO GROUND BETWEEN THE SEAT CONTROL SWITCH AND DSM (DRIVER FRONT SEAT MODULE)
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C508-3   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to AT5
No REPAIR the circuit. GO to AT7

AT5 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) FOR AN OPEN BETWEEN THE SEAT CONTROL SWITCH AND DSM (DRIVER FRONT SEAT MODULE)
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C508-3   C341C-4

Is the resistance less than 3 ohms?
Yes GO to AT6
No REPAIR the affected circuit. GO to AT7

AT6 CHECK THE DSM (DRIVER FRONT SEAT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-line C3136 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
OPERATE the system and determine if the concern is still present. If the concern is still present, INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to AT7
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to AT7

AT7 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Driver Side Airbag In-line C3136.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST AU: DTC: B1087:83 OR B1087:87

Refer to Wiring Diagrams Cell 120 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMB B1087:83 LIN Bus 'A': Value Of Signal Protection Calculation Incorrect Sets by the SCMB when a loss of communication has been detected from the passenger seat control switch.
SCMB B1087:87 LIN Bus 'A': Missing Message Sets by the SCMB when a loss of communication has been detected from the passenger seat control switch.

Possible Sources

  • Fuse
  • Wiring, terminals or connectors
  • Seat control switch
  • SCMB

Visual Inspection and Pre-checks

  • Verify BCM fuse 18 (7.5A) is OK.

  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.

AU1 CHECK FOR VOLTAGE TO THE SEAT CONTROL SWITCH
  • Ignition OFF.
  • Disconnect: Passenger Seat Control Switch C614.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C614-1   Ground

Is the voltage greater than 11 volts?
Yes GO to AU2
No VERIFY BCM fuse 18 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

AU2 CHECK THE SEAT CONTROL SWITCH GROUND CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C614-8   Ground

Is the resistance less than 3 ohms?
Yes GO to AU3
No REPAIR the circuit.

AU3 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) FOR A SHORT TO VOLTAGE BETWEEN THE SEAT CONTROL SWITCH AND SCMB (PASSENGER FRONT SEAT MODULE)

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C3137.
  • Disconnect: SCMB C342C.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C614-3   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to AU7
No GO to AU4

AU4 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) FOR A SHORT TO GROUND BETWEEN THE SEAT CONTROL SWITCH AND SCMB (PASSENGER FRONT SEAT MODULE)
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C614-3   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to AU5
No REPAIR the circuit. GO to AU7

AU5 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) FOR AN OPEN BETWEEN THE SEAT CONTROL SWITCH AND SCMB (PASSENGER FRONT SEAT MODULE)
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C614-3   C341C-4

Is the resistance less than 3 ohms?
Yes GO to AU6
No REPAIR the affected circuit. GO to AU7

AU6 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the SCMB connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMB connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Passenger Side Airbag In-line C3137 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
OPERATE the system and determine if the concern is still present. If the concern is still present, INSTALL a new SCMB .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to AU7
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to AU7

AU7 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Passenger Side Airbag In-line C3137.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).


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