Lincoln Corsair Manuals

Lincoln Corsair: Front End Body Panels / Diagnosis and Testing - Active Grille Shutter

Lincoln Corsair 2020-2024 Service Manual / Body and Paint / Body and Paint / Front End Body Panels / Diagnosis and Testing - Active Grille Shutter

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).


Module DTC Description Action
PCM P059F:00 Active Grille Air Shutter 'A' Performance/Stuck Off: No Sub Type Information GO to Pinpoint Test A
PCM P05A1:00 Active Grille Air Shutter 'A' Position Sensor Minimum/Maximum Stop Performance: No Sub Type Information GO to Pinpoint Test A
PCM P05A2:00 Active Grille Air Shutter 'A' Control Circuit/Open: No Sub Type Information GO to Pinpoint Test A
PCM P05A7:00 Active Grille Air Shutter 'A' Supply Voltage Circuit Low: No Sub Type Information GO to Pinpoint Test A
PCM P05C0:00 Active Grille Air Shutter Module 'A' Over Temperature: No Sub Type Information GO to Pinpoint Test A
PCM U0284:00 Lost Communication with Active Grille Air Shutter Module 'A': No Sub Type Information GO to Pinpoint Test A

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
Fit/Finish/Body > Exterior Trim > Grille > Alignment GO to Pinpoint Test A
Fit/Finish/Body > Exterior Trim > Grille > Corrosion/Rust GO to Pinpoint Test A
Fit/Finish/Body > Exterior Trim > Grille > Loose/Attachment GO to Pinpoint Test A
Fit/Finish/Body > Exterior Trim > Grille > Poor Fit GO to Pinpoint Test A

Symptom Chart(s)

Symptom Chart: Active Grille Shutter

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 Possible Sources Actions
The active grille shutter is inoperative or does not operate correctly
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test A

Pinpoint Test(s)


PINPOINT TEST A: THE ACTIVE GRILLE SHUTTER IS INOPERATIVE OR DOES NOT OPERATE CORRECTLY

Refer to Wiring Diagrams Cell 33 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Active Grille Shutter - System Operation and Component Description (501-02 Front End Body Panels, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
PCM P059F:00 Active Grille Air Shutter 'A' Performance/Stuck Off: No Sub Type Information When the grille shutter actuator senses it is unable to move the grille shutter, it sends a message to the PCM via the LIN . The PCM sets this DTC when the fault is communicated for a predetermined amount of time.
PCM P05A1:00 Active Grille Air Shutter 'A' Position Sensor Minimum/Maximum Stop Performance: No Sub Type Information When the grille shutter actuator senses it is unable to obtain a fully open or closed position of the grille shutter, it sends a message to the PCM via the LIN . The PCM then sets the DTC when the fault is communicated for a predetermined amount of time.
PCM P05A2:00 Active Grille Air Shutter 'A' Control Circuit/Open: No Sub Type Information This DTC sets when the grille shutter actuator control circuit H-Bridge is overheated or if a short to ground or open is detected in the actuator control circuit. The PCM sets this DTC when the condition is present for a predetermined amount of time.
PCM P05A7:00 Active Grille Air Shutter 'A' Supply Voltage Circuit Low: No Sub Type Information When the grille shutter actuator senses low voltage, it sends a message to the PCM via the LIN . The PCM sets this DTC when the fault is communicated for a predetermined amount of time.
PCM P05C0:00 Active Grille Air Shutter Module 'A' Over Temperature: No Sub Type Information This DTC sets when the upper active grille shutter actuator detects excessive internal heat.
PCM U0284:00 Lost Communication with Active Grille Air Shutter Module 'A': No Sub Type Information When the PCM does not receive communication from the grille shutter actuator for a predetermined amount of time, the PCM sets this DTC .

Possible Sources

  • Fuse
  • Wiring, terminals or connectors
  • Grille shutter actuator
  • Grille shutters
  • PCM

Visual Inspection and Pre-checks

  • Check for physical damage.
  • Check battery voltage.
  • Verify BJB fuse 8 (15A) is OK.
  • Make sure the grille opening does not have any debris or other obstructions that inhibit operation of the grille shutter.
A1 CHECK THE ACTIVE GRILLE SHUTTER DEVICE LOST COMMUNICATION (GRILL_LOSTCOMM) PARAMETER IDENTIFICATION (PID)
  • Using diagnostic scan tool, view PCM PID s.
  • Using a diagnostic scan tool,

    Access the  PCM  and monitor the  GRILL_LOSTCOMM  PID

    .

Confirm the output of the PID test?
Yes GO to A9
No GO to A2

A2 CHECK THE ACTIVE GRILLE SHUTTER DEVICE ELECTRICAL FAULT (GRILL_A_ELEC_F) PARAMETER IDENTIFICATION (PID)
  • Using diagnostic scan tool, view PCM PID s.
  • Using diagnostic scan tool,

    Access the  PCM  and monitor the  GRILL_A_ELEC_F  PID

    .

Does the PID test indicate an electrical fault in the actuator?
Yes GO to A9
No GO to A3

A3 CHECK THE ACTIVE GRILLE SHUTTER DEVICE LOW SYSTEM VOLTAGE (GRILL_A_UNDRV) PARAMETER IDENTIFICATION (PID)
  • Using diagnostic scan tool, view PCM PID s.
  • Using the diagnostic scan tool,

    Access the  PCM  and monitor the  GRILL_A_UNDRV  PID

    .

Does the active grille shutter system detect a fault?
Yes GO to A9
No GO to A4

A4 CHECK THE ACTIVE GRILLE SHUTTER DEVICE OVER TEMPERATURE (GRILL_A_OVRT) PARAMETER IDENTIFICATION (PID)
  • Using diagnostic scan tool, view PCM PID s.
  • Using diagnostic scan tool,

    Access the  PCM  and monitor the  GRILL_A_OVRT  PID

    .

Does the PID test confirm the fault?
Yes GO to A9
No GO to A5

A5 VERIFY THE GRILLE SHUTTER OPERATION USING THE GRILL SHUTTER A POSITION (GRILL_CMDCAL) PARAMETER IDENTIFICATION (PID)
  • Put IGNITION in ON.
  • ALLOW for grille shutter calibration to complete.
  • Using the diagnostic scan tool, view the PCM PID .
  • Using the diagnostic scan tool,

    Access the  PCM  and monitor the  GRILL_CMDCAL  PID

    .

Is the AGS still attempting to complete the self learning?
Yes GO to A6
No GO to A9

A6 CHECK THE ACTIVE GRILLE SHUTTER DEVICE A POSITION FAULT (GRILL_A_POS_F) PARAMETER IDENTIFICATION (PID)
  • Using diagnostic scan tool, view PCM PID s.
  • Using diagnostic scan tool,

    Access the  PCM  and monitor the  GRILL_A_POS_F  PID

    .

Does the PID test confirm an end stop not found fault?
Yes GO to A9
No GO to A7

A7 CHECK THE ACTIVE GRILLE SHUTTER DEVICE STUCK/BLOCKED (GRILL_A_BLCK) PARAMETER IDENTIFICATION (PID)
  • Using diagnostic scan tool, view PCM PID s.
  • Using diagnostic scan tool,

    Access the  PCM  and monitor the  GRILL_A_BLCK  PID

    .

Does the PID test indicate a stuck active grille shutter actuator?
Yes GO to A9
No GO to A8

A8 VERIFY THE GRILLE SHUTTER OPERATION USING THE GRILLE SHUTTER A POSITION - COMMANDED (GRILL_A_CMD) PARAMETER IDENTIFICATION (PID)
  • Perform visual inspection of active grille shutter system.
  • Put IGNITION in ON to allow for grille shutter calibration to complete.
  • Using the diagnostic scan tool, view the PCM PID for Output State.

    Access the  PCM  and monitor the  GRILL_A_CMD (% Open)  PID

    while observing the grille shutter operation from the front of vehicle.
  • Monitor the error state DIDs while commanding the active grille shutter system.

Does the grille shutter flag any faults while completing the output state control operation?
Yes For GRILL_LOSTCOMM - Lost Communication With Active Grille Shutter Control Module "A" , GO to A9
For GRILL_A_ELEC_F - Grille Shutter Module "A" - Indicates An Electrical Fault, GO to A9
For GRILL_A_UNDRV - Grille Shutter Module "A" - Indicates An Under Voltage Condition, GO to A9
For GRILL_A_OVRT - Grille Shutter Module "A" - Indicates An Over Temperature Condition, GO to A9
For GRILL_CMDCAL - Grille Shutter Module "A" - Self-calibration, GO to A9
For GRILL_A_POS_F - Grille Shutter "A" Actuator Fault - End Stop Not Found Or Found Where Not Expected, GO to A9
For GRILL_A_BLCK - Grille Shutter "A" Is Blocked - Unable To Achieve The Commanded Position, GO to A9
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.

A9 CHECK THE VOLTAGE SUPPLY TO THE GRILLE SHUTTER ACTUATOR
  • Ignition OFF.
  • Disconnect: Active Grille Shutter C1651.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1651-3   Ground

Is the voltage greater than 11 volts?
Yes GO to A10
No VERIFY BJB fuse 8 (15A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the cause of the circuit short.

A10 CHECK THE GRILLE SHUTTER ACTUATOR GROUND CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1651-1   Ground

Is the resistance less than 3 ohms?
Yes GO to A11
No REPAIR the circuit.

A11 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN
  • Disconnect: Active Grille Shutter C1651.
  • Disconnect: PCM C1551B
  • Measure:
    Positive Lead Measurement / Action Negative Lead
      C1651-2   C1551B-47

Is the resistance less than 3 ohms?
Yes GO to A12
No REPAIR the circuit.

A12 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1651-2   Ground

Is any voltage present?
Yes GO to A13
No GO to A14

A13 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO VOLTAGE WITH THE GENERATOR DISCONNECTED
  • Ignition OFF.
  • Disconnect Generator C1104B.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1651-2   Ground

Is any voltage present?
Yes REPAIR the circuit.
No INSTALL a new generator.
REFER to: Generator - 2.0L EcoBoost (177kW/240PS) – MI4/2.3L EcoBoost (199kW/270PS) (414-02 Generator and Regulator, Removal and Installation).

A14 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1651-2   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to A16
No GO to A15

A15 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO GROUND WITH THE GENERATOR DISCONNECTED
  • Disconnect Generator C1104B.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1651-2   Ground

Is the resistance greater than 10,000 ohms?
Yes INSTALL a new generator.
REFER to: Generator - 2.0L EcoBoost (177kW/240PS) – MI4/2.3L EcoBoost (199kW/270PS) (414-02 Generator and Regulator, Removal and Installation).
No REPAIR the circuit.

A16 CHECK THE GRILLE SHUTTER FOR OBSTRUCTIONS AND/OR MECHANICAL BINDING CONCERNS
  • Ignition OFF.
  • Remove the grille shutter actuator.
    REFER to: Active Grille Shutter Actuator (501-02 Front End Body Panels, Removal and Installation).
  • Manually open and close the grille shutter, removing any obstructions which can inhibit operation of the grille shutter or linkage. The grille shutter should open and close easily with no binding.

Does the grille shutter operate freely with no binding or obstruction?
Yes GO to A17
No REPAIR the binding/obstruction, or if necessary, INSTALL a new active grille shutter.
REFER to: Active Grille Shutter (501-02 Front End Body Panels, Removal and Installation).

A17 CHECK FOR CORRECT GRILLE SHUTTER ACTUATOR AND POWERTRAIN MODULE (PCM) OPERATION
  • Ignition OFF.
  • Disconnect: Active Grille Shutter C1651 (if not previously disconnected).
  • Disconnect: PCM C1551B (if not previously disconnected).
  • Inspect the grille shutter actuator and PCM electrical connectors and jumper harness.
  • 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 grille shutter actuator connector, jumper harness and all previously disconnected system connectors. Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSB s. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSB s address this concern, INSTALL a new component.
REFER to: Active Grille Shutter Actuator (501-02 Front End Body Panels, Removal and Installation).
. CLEAR the DTC s. REPEAT the self-test. If the concern is still present, contact the Ford Technician Hotline.
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.


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