Lincoln Navigator Manuals

Lincoln Navigator: Automatic Transmission - 10-Speed Automatic Transmission – 10R80 / E Clutch. Diagnosis and Testing

Lincoln Navigator 2018-2026 Workshop Manual / Automatic Transmission / Automatic Transmission - 10-Speed Automatic Transmission – 10R80 / E Clutch. Diagnosis and Testing

Symptom Chart

E Clutch

For E clutch operation,
REFER to: E Clutch (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Description and Operation).


  E Clutch


Condition Possible Sources Action
E clutch does not apply SSE mechanically stuck OFF INSTALL a new solenoid.
REFER to: Shift Solenoids (SS) (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation).
E clutch control valve stuck OFF DISASSEMBLE, CLEAN and INSPECT the E clutch control valve. If the bore or valve is damaged, INSTALL a new main control valve body.
REFER to: Main Control Valve Body (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation).
E clutch hydraulic circuit blocked/leaking DISASSEMBLE and INSPECT the main control valve body and separator plate passages for debris, blockage and leaks. CLEAN as necessary.
REFER to: Main Control Valve Body (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation).
CARRY OUT the air pressure test on the E clutch.
REFER to: Special Testing Procedures (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Diagnosis and Testing).
If a leak is detected, INSPECT the seals on the output shaft, the seals on the input shaft and the E clutch piston seals for leaks. INSTALL new components as necessary. REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul).
E clutch hub, shell and sun gear no. 4 DISASSEMBLE and INSPECT the E clutch hub and shell and sun gear no. 4 for wear and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul).
E clutch piston seals DISASSEMBLE and INSPECT the E clutch piston seals for wear and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul).
E clutch friction plates DISASSEMBLE and INSPECT the E clutch friction and steel plates for wear and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul).
E clutch always applied SSE mechanically stuck ON INSTALL a new solenoid.
REFER to: Shift Solenoids (SS) (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation).
E clutch control valve stuck ON DISASSEMBLE, CLEAN and INSPECT the E clutch control valve. If the bore or valve is damaged, INSTALL a new main control valve body.
REFER to: Main Control Valve Body (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation).
E clutch hydraulic circuit cross leaks DISASSEMBLE and INSPECT the main control valve body and separator plate passages for cracks, warping and damage. If damage is found, INSTALL a new main control valve body.
REFER to: Main Control Valve Body (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation).
E clutch hub, shell and sun gear no. 4 DISASSEMBLE and INSPECT the E clutch hub and shell and sun gear no. 4 for wear and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul).
E clutch piston return spring DISASSEMBLE and INSPECT the E clutch piston return spring for damage. INSTALL new components as necessary.
REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul).
E clutch friction plates DISASSEMBLE and INSPECT the E clutch friction and steel plates for wear and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul).
E clutch delayed/soft/slipping apply Incorrect transmission strategy programmed into PCM / TCM . CARRY OUT the Transmission Strategy Download and the Adaptive Learning Drive Cycle.
REFER to: Transmission Strategy Download (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, General Procedures).
REFER to: Adaptive Learning Drive Cycle (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, General Procedures).
Low line pressure CARRY OUT the line pressure test. If line pressure is low, REFER to the Line Pressure Diagnosis Chart.
REFER to: Special Testing Procedures (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Diagnosis and Testing).
SSE mechanically sticking INSTALL a new solenoid.
REFER to: Shift Solenoids (SS) (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation).
E clutch control valve sticking DISASSEMBLE, CLEAN and INSPECT the E clutch control valve. If the bore or valve is damaged, INSTALL a new main control valve body.
REFER to: Main Control Valve Body (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation).
Gain control valve stuck in default position. DISASSEMBLE, CLEAN and INSPECT the clutch gain control valve. If the bore or valve is damaged, INSTALL a new main control valve body.
REFER to: Main Control Valve Body (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation).
E clutch hydraulic circuits blocked/leaking DISASSEMBLE and INSPECT the main control valve body and separator plate passages for debris, blockage and leaks. CLEAN as necessary.
REFER to: Main Control Valve Body (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation).
CARRY OUT the air pressure test on the E clutch.
REFER to: Special Testing Procedures (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Diagnosis and Testing).
If a leak is detected, INSPECT the seals on the output shaft, the seals on the input shaft and the E clutch piston seals for leaks. INSTALL new components as necessary. REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul).
E clutch piston seals DISASSEMBLE and INSPECT the E clutch piston seals for wear and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul).
E clutch friction plates DISASSEMBLE and INSPECT the E clutch friction and steel plates for wear and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul).
E clutch harsh apply Incorrect transmission strategy programmed into PCM / TCM . CARRY OUT the Transmission Strategy Download and the Adaptive Learning Drive Cycle.
REFER to: Transmission Strategy Download (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, General Procedures).
REFER to: Adaptive Learning Drive Cycle (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, General Procedures).
High line pressure CARRY OUT the line pressure test. If line pressure is high, REFER to the Line Pressure Diagnosis Chart.
REFER to: Special Testing Procedures (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Diagnosis and Testing).
SSE mechanically sticking INSTALL a new solenoid.
REFER to: Shift Solenoids (SS) (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation).
E clutch control valve sticking DISASSEMBLE, CLEAN and INSPECT the E clutch control valve. If the bore or valve is damaged or worn, INSTALL a new main control valve body.
REFER to: Main Control Valve Body (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation).
Gain control valve stuck in applied position DISASSEMBLE, CLEAN and INSPECT the clutch gain control valve. If the bore or valve is damaged, INSTALL a new main control valve body.
REFER to: Main Control Valve Body (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation).
E clutch hydraulic circuit blocked/leaking DISASSEMBLE and INSPECT the main control valve body and separator plate passages for debris, blockage and leaks. CLEAN as necessary.
REFER to: Main Control Valve Body (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation).
E clutch piston return spring DISASSEMBLE and INSPECT the E clutch piston return spring for damage. INSTALL new components as necessary.
REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul).
E clutch friction plates DISASSEMBLE and INSPECT the E clutch friction and steel plates for wear and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul).

    D Clutch. Diagnosis and Testing

    Symptom Chart D Clutch For D clutch operation, REFER to: D Clutch (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Description and Operation)...

    F Clutch. Diagnosis and Testing

    Principles of Operation Symptom Chart F Clutch For F clutch operation, REFER to: F Clutch (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Description and Operation)...

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