Ford Explorer Quiz
Powertrain

Diagnosis and Testing - Clutch C

In this manual: Powertrain
General Information — 41Chassis — 173Powertrain — 250Electrical — 303Body and Paint — 331
~9min read

Symptom Chart

Clutch

For Clutch C operation,
REFER TO: Clutch C (307-01A Automatic Transmission - 10-Speed Automatic Transmission - 10R60, Description and Operation).


Clutch


Condition Possible Sources Action
Clutch C inoperative SSC mechanically stuck in the OFF position INSTALL a new solenoid.
REFER TO: Shift Solenoids (SS) (307-01A Automatic Transmission - 10-Speed Automatic Transmission - 10R60, Removal and Installation).
Clutch C control valve stuck in OFF position DISASSEMBLE, CLEAN and INSPECT clutch C 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).
Clutch C lock valve stuck in OFF position DISASSEMBLE, CLEAN and INSPECT clutch C lock 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).
Clutch C hydraulic circuit blocked/leaking DISASSEMBLE and INSPECT the main control valve body and separator plate passages for debris, restrictions and leaks. CLEAN as necessary.
REFER TO: Main Control Valve Body (307-01A Automatic Transmission - 10-Speed Automatic Transmission - 10R60, Removal and Installation).
PERFORM an air pressure test on clutch C.
REFER TO: Special Test Procedures (307-01A Automatic Transmission - 10-Speed Automatic Transmission - 10R60, Diagnosis and Testing).
If a leak is detected, INSPECT front support assembly, input shaft Teflon seals, CDF clutch cylinder and clutch C piston seals for leaks. INSTALL new components as necessary. REFER TO: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission - 10R80, Overhaul).
CDF clutch cylinder, ring gear No. 2, sun gear No. 3 DISASSEMBLE and INSPECT CDF clutch cylinder, ring gear No. 2 and sun gear No. 3 for wear and damage. INSTALL new components as necessary.
REFER TO: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission - 10R80, Overhaul).
Clutch piston seals DISASSEMBLE and INSPECT clutch C piston seals for wear and damage. INSTALL new components as necessary.
REFER TO: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission - 10R80, Overhaul).
C Clutch Friction Plates DISASSEMBLE and INSPECT clutch C friction and steel plates for wear and damage. INSTALL new components as necessary.
REFER TO: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission - 10R80, Overhaul).
Clutch C always engaged SSC mechanically stuck in the ON position INSTALL a new solenoid.
REFER TO: Shift Solenoids (SS) (307-01A Automatic Transmission - 10-Speed Automatic Transmission - 10R60, Removal and Installation).
Clutch C control valve stuck in ON position DISASSEMBLE, CLEAN and INSPECT clutch C 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).
Clutch C lock valve stuck in ON position DISASSEMBLE, CLEAN and INSPECT clutch C lock 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).
Leak in clutch C hydraulic circuit DISASSEMBLE and INSPECT the main control valve body and separator plate passages for cracks, distortion 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, ring gear No. 2 DISASSEMBLE and INSPECT components for wear and damage. INSTALL new components as necessary.
REFER TO: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission - 10R80, Overhaul).
C Clutch Piston Return Spring DISASSEMBLE and INSPECT clutch C piston return spring for damage. INSTALL new components as necessary.
REFER TO: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission - 10R80, Overhaul).
C Clutch Friction Plates DISASSEMBLE and INSPECT clutch C friction and steel plates for wear and damage. INSTALL new components as necessary.
REFER TO: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission - 10R80, Overhaul).
Clutch C delayed/soft/slipping. Incorrect shift strategy programmed in the PCM/TCM. PERFORM the shift strategy download and 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, General Procedures).
Low Line Pressure PERFORM the line pressure test. If line pressure is low, REFER TO the line pressure diagnostics chart.
REFER TO: Special Testing Procedures (307-01A Automatic Transmission - 10-Speed Automatic Transmission - 10R60, Diagnosis and Testing).
SSC mechanically sticking
  • If vehicle mileage is less than 5000 miles (8000 km), PERFORM the PCM - Primary Transmission Control with Acceleration procedure 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).
Clutch C control valve sticking
  • If vehicle mileage is less than 5000 miles (8000 km), PERFORM the PCM - Primary Transmission Control with Acceleration procedure 3 times using the diagnostic scan tool.
  • For all other vehicles, DISASSEMBLE, CLEAN and INSPECT clutch C 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).
Clutch C lock valve sticking
  • If vehicle mileage is less than 5000 miles (8000 km), PERFORM the PCM - Primary Transmission Control with Acceleration procedure 3 times using the diagnostic scan tool.
  • For all other vehicles, DISASSEMBLE, CLEAN and INSPECT the C clutch exhaust/check valve. If the orifice 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).
C clutch hydraulic circuits blocked/leaking DISASSEMBLE and INSPECT the main control valve body and separator plate passages for debris, restrictions and leaks. CLEAN as necessary.
REFER TO: Main Control Valve Body (307-01A Automatic Transmission - 10-Speed Automatic Transmission - 10R60, Removal and Installation).
PERFORM an air pressure test on clutch C.
REFER TO: Special Test Procedures (307-01A Automatic Transmission - 10-Speed Automatic Transmission - 10R60, Diagnosis and Testing).
If a leak is detected, INSPECT front support assembly, input shaft Teflon seals, CDF clutch cylinder and clutch C piston seals for leaks. INSTALL new components as necessary. REFER TO: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission - 10R80, Overhaul).
Clutch piston seals DISASSEMBLE and INSPECT clutch C piston seals for wear and damage. INSTALL new components as necessary.
REFER TO: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission - 10R80, Overhaul).
C Clutch Friction Plates DISASSEMBLE and INSPECT clutch C friction and steel plates for wear and damage. INSTALL new components as necessary.
REFER TO: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission - 10R80, Overhaul).
C Clutch Hard Engagement Incorrect shift strategy programmed in the PCM/TCM. PERFORM the shift strategy download and 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, General Procedures).
High line pressure PERFORM the line pressure test. If line pressure is high, REFER TO the line pressure diagnostics chart.
REFER TO: Special Testing Procedures (307-01A Automatic Transmission - 10-Speed Automatic Transmission - 10R60, Diagnosis and Testing).
SSC mechanically sticking
  • If vehicle mileage is less than 5000 miles (8000 km), PERFORM the PCM - Primary Transmission Control with Acceleration procedure 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).
Clutch C control valve sticking
  • If vehicle mileage is less than 5000 miles (8000 km), PERFORM the PCM - Primary Transmission Control with Acceleration procedure 3 times using the diagnostic scan tool.
  • For all other vehicles, DISASSEMBLE, CLEAN and INSPECT clutch C 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).
Clutch C lock valve sticking
  • If vehicle mileage is less than 5000 miles (8000 km), PERFORM the PCM - Primary Transmission Control with Acceleration procedure 3 times using the diagnostic scan tool.
  • For all other vehicles, DISASSEMBLE, CLEAN and INSPECT clutch C 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).
Clutch C hydraulic circuit blocked/leaking DISASSEMBLE and INSPECT the main control valve body and separator plate passages for debris, restrictions and leaks. CLEAN as necessary.
REFER TO: Main Control Valve Body (307-01A Automatic Transmission - 10-Speed Automatic Transmission - 10R60, Removal and Installation).
C Clutch Piston Return Spring DISASSEMBLE and INSPECT clutch C piston return spring for damage. INSTALL new components as necessary.
REFER TO: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission - 10R80, Overhaul).
C Clutch Friction Plates DISASSEMBLE and INSPECT clutch C friction and steel plates for wear and damage. INSTALL new components as necessary.
REFER TO: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission - 10R80, Overhaul).

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