Lincoln Corsair Manuals

Lincoln Corsair: Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40 / Diagnosis and Testing - E Clutch

Lincoln Corsair 2020-2024 Service Manual / Powertrain / Automatic Transmission / Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40 / Diagnosis and Testing - E Clutch

Symptom Chart

E clutch

For E clutch operation,
REFER to: E Clutch (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Description and Operation).


  E clutch


Condition Possible Sources Action
E clutch does not apply SSE is mechanically stuck off INSTALL a new solenoid.
REFER to: Solenoid (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Removal and Installation).
E clutch control valve stuck off DISASSEMBLE, CLEAN and INSPECT the clutch control valve. If the bore or valve is damaged, INSTALL a new main control valve body.
REFER to: Main Control Valve Body (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Overhaul).
E CL CONTR, hydraulic circuit blocked/leaking DISASSEMBLE and INSPECT the main control valve body and separator plate passages for debris/blockage. CLEAN as necessary.
REFER to: Main Control Valve Body (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Overhaul).
E clutch piston seals INSPECT the components for wear and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Overhaul).
E clutch hub INSPECT the components for wear and damage. CLEAN and/or INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Overhaul).
E clutch friction plates INSPECT the components for wear and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Overhaul).
E clutch always applied SSE mechanically stuck INSTALL a new solenoid.
REFER to: Solenoid (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Removal and Installation).
E clutch control valve or CL E latch valve stuck on DISASSEMBLE, CLEAN and INSPECT the clutch control valve. If the bore or valve is damaged, INSTALL a new main control valve body.
REFER to: Main Control Valve Body (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Overhaul).
E CL CONTR, hydraulic circuit cross leaks DISASSEMBLE and INSPECT the main control valve body and separator plate passages for leaks or damage. INSTALL new components as necessary.
REFER to: Main Control Valve Body (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Overhaul).
E clutch hub, clutch and planetary carrier, No. 4 ring gear INSPECT the components for wear and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Overhaul).
E clutch friction plates INSPECT the components for wear and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Overhaul).
E clutch delayed/soft/slipping apply Incorrect transmission strategy programmed into PCM / TCM . PERFORM the Transmission Strategy Download,
REFER to: Transmission Strategy Download (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, General Procedures).
Low line pressure PERFORM line pressure test.
REFER to: Special Testing Procedures (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Diagnosis and Testing).
SSE mechanically sticking INSTALL a new solenoid.
REFER to: Solenoid (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Removal and Installation).
E clutch control valve sticking DISASSEMBLE, CLEAN and INSPECT the valve. If the bore or valve is damaged, INSTALL a new main control valve body.
REFER to: Main Control Valve Body (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Overhaul).
Gain control valve stuck in default position. DISASSEMBLE, CLEAN and INSPECT the valve. If the bore or valve is damaged, INSTALL a new main control valve body.
REFER to: Main Control Valve Body (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Overhaul).
E CL CONTR, E CL-FB2 hydraulic circuits blocked/leaking DISASSEMBLE and INSPECT the main control valve body and separator plate passages for debris/blockage. CLEAN as necessary.
REFER to: Main Control Valve Body (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Overhaul).
E clutch friction plates INSPECT the components for wear and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Overhaul).
E clutch piston seals INSPECT the components for wear and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Overhaul).
E clutch harsh apply Incorrect transmission strategy programmed into PCM / TCM . PERFORM the Transmission Strategy Download,
REFER to: Transmission Strategy Download (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, General Procedures).
High line pressure PERFORM line pressure test.
REFER to: Special Testing Procedures (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Diagnosis and Testing).
SSE mechanically sticking INSTALL a new solenoid.
REFER to: Solenoid (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Removal and Installation).
E clutch control valve sticking DISASSEMBLE, CLEAN and INSPECT the valve. If the bore or valve is damaged or worn, INSTALL a new main control valve body.
REFER to: Main Control Valve Body (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Overhaul).
Gain control valve stuck in applied position DISASSEMBLE, CLEAN and INSPECT the valve. If the bore or valve is damaged, INSTALL a new main control valve body.
REFER to: Main Control Valve Body (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Overhaul).
E CL CONTR, E CL-FB2 hydraulic circuit blocked/leaking DISASSEMBLE and INSPECT the main control valve body and separator plate passages for debris/blockage. CLEAN as necessary.
REFER to: Main Control Valve Body (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Overhaul).
E clutch friction plates INSPECT the components for wear and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Overhaul).
E clutch piston return springs INSPECT the components for wear and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Overhaul).

    Diagnosis and Testing - Hydraulic Selectable One-Way Clutch Assembly

    Symptom Chart For selectable one-way clutch operation, REFER to: Hydraulic Selectable One-Way Clutch Assembly (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Description and Operation)...

    Diagnosis and Testing - F Clutch

    Symptom Chart F clutch For F clutch operation, REFER to: F Clutch (307-01A Automatic Transmission - 8-Speed Automatic Transmission – 8F35/8F40, Description and Operation)...

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