Lincoln Aviator Manuals
Lincoln Aviator 2020-2025 Service Manual / Powertrain / Automatic Transmission / Automatic Transmission - 10-Speed Automatic Transmission – 10R60 / Diagnosis and Testing - D Clutch

Lincoln Aviator: Automatic Transmission - 10-Speed Automatic Transmission – 10R60 / Diagnosis and Testing - D Clutch

Symptom Chart

D Clutch

For D clutch operation,
REFER to: D Clutch (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Description and Operation).


  D Clutch


Condition Possible Sources Action
D clutch does not apply SSD mechanically stuck OFF INSTALL a new solenoid.
REFER to: Shift Solenoids (SS) (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
D clutch control valve stuck OFF DISASSEMBLE, CLEAN and INSPECT the D 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 - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
D clutch 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 - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
If a leak is detected, INSPECT the front support assembly, input shaft Teflon seals and D clutch piston seals for leaks. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Overhaul).
CDF clutch cylinder, planetary carrier no. 3 DISASSEMBLE and INSPECT the CDF clutch cylinder and planetary carrier no. 3 for wear and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Overhaul).
D clutch piston seals DISASSEMBLE and INSPECT the D clutch piston seals for wear and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Overhaul).
D clutch friction plates DISASSEMBLE and INSPECT the D clutch friction and steel plates for wear and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Overhaul).
D clutch always applied SSD mechanically stuck ON INSTALL a new solenoid.
REFER to: Shift Solenoids (SS) (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
D clutch control valve stuck ON DISASSEMBLE, CLEAN and INSPECT the D 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 - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
D 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 (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
CDF clutch cylinder, planetary carrier no. 3 DISASSEMBLE and INSPECT the components for wear and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Overhaul).
D clutch piston return spring DISASSEMBLE and INSPECT the D clutch piston return spring for damage. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Overhaul).
D clutch friction plates DISASSEMBLE and INSPECT the D clutch friction and steel plates for wear and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Overhaul).
D 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 (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, General Procedures).
REFER to: Adaptive Learning Drive Cycle (307-01B Automatic Transmission - 10-Speed Automatic Transmission – 10R80 MHT, 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 (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Diagnosis and Testing).
SSD mechanically sticking
  • If the vehicle has less than 5,000 miles (8,000 km), CARRY OUT the PCM - Transmission Accelerated Main Control Break In routine 3 times using the diagnostic scan tool.
  • For all other vehicles, INSTALL a new solenoid.
    REFER to: Shift Solenoids (SS) (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
D Clutch control valve sticking
  • If the vehicle has less than 5,000 miles (8,000 km), CARRY OUT the PCM - Transmission Accelerated Main Control Break In routine 3 times using the diagnostic scan tool.
  • For all other vehicles, DISASSEMBLE, CLEAN and INSPECT the D 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 - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
D 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 (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
CARRY OUT the air pressure test on the D clutch.
REFER to: Special Testing Procedures (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Diagnosis and Testing).
If a leak is detected, INSPECT the front support assembly, input shaft Teflon seals and D clutch piston seals for leaks. INSTALL new components as necessary. REFER to: Transmission (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Overhaul).
D clutch piston seals DISASSEMBLE and INSPECT the D clutch piston seals for wear and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Overhaul).
D clutch friction plates DISASSEMBLE and INSPECT the D clutch friction and steel plates for wear and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Overhaul).
D 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 (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, General Procedures).
REFER to: Adaptive Learning Drive Cycle (307-01B Automatic Transmission - 10-Speed Automatic Transmission – 10R80 MHT, 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 (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Diagnosis and Testing).
SSD mechanically sticking
  • If the vehicle has less than 5,000 miles (8,000 km), CARRY OUT the PCM - Transmission Accelerated Main Control Break In routine 3 times using the diagnostic scan tool.
  • For all other vehicles, INSTALL a new solenoid.
    REFER to: Shift Solenoids (SS) (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
D clutch control valve sticking
  • If the vehicle has less than 5,000 miles (8,000 km), CARRY OUT the PCM - Transmission Accelerated Main Control Break In routine 3 times using the diagnostic scan tool.
  • For all other vehicles, DISASSEMBLE, CLEAN and INSPECT the D 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 - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
D 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 (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
D clutch piston return spring DISASSEMBLE and INSPECT the D clutch piston return spring for damage. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Overhaul).
D clutch friction plates DISASSEMBLE and INSPECT the D clutch friction and steel plates for wear and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Overhaul).

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