Ford Explorer Quiz
Powertrain

Diagnosis and Testing - Clutch

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

Symptom Chart

Clutch

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


Clutch


Condition Possible Sources Action
Clutch Not Applied SSA mechanically stuck in the OFF position INSTALL a new solenoid.
REFER TO: Shift Solenoids (SS) (307-01B Automatic Transmission - 10-Speed Automatic Transmission - 10R80, Removal and Installation).
Clutch control valve stuck in the OFF position DISASSEMBLE, CLEAN and INSPECT the clutch A control 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).
Clutch blocking valve stuck in the OFF position DISASSEMBLE, CLEAN and INSPECT the clutch A blocking 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).
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 A.
REFER TO: Special Test Procedures (307-01A Automatic Transmission - 10-Speed Automatic Transmission - 10R60, Diagnosis and Testing).
If a leak is found, INSPECT the front support assembly and clutch piston seals for leaks. INSTALL new components as necessary. REFER TO: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission - 10R80, Overhaul).
Front Support Assembly, Ring Gear No. 1 DISASSEMBLE and INSPECT the front support assembly hydraulic passages for debris, restrictions or leaks. INSPECT the front support assembly and ring gear No. 1 for wear and damage. CLEAN or 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 A piston seals for wear and damage. INSTALL new components as necessary.
REFER TO: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission - 10R80, Overhaul).
Clutch Friction Plates DISASSEMBLE and INSPECT clutch A 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 Always Applied SSA mechanically stuck in the ON position INSTALL a new solenoid.
REFER TO: Shift Solenoids (SS) (307-01B Automatic Transmission - 10-Speed Automatic Transmission - 10R80, Removal and Installation).
Clutch control valve stuck in the ON position DISASSEMBLE, CLEAN and INSPECT the clutch A control 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).
Clutch blocking valve stuck in the ON position DISASSEMBLE, CLEAN and INSPECT the clutch A blocking 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).
Clutch Hydraulic Circuit Leak 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).
Front Support Assembly, Ring Gear No. 1 DISASSEMBLE and INSPECT the front support assembly hydraulic passages for debris, restrictions and leaks. INSPECT the front support assembly and ring gear No. 4 for wear and damage. CLEAN or INSTALL new components as necessary.
REFER TO: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission - 10R80, Overhaul).
Clutch Piston Return Spring INSPECT and CHECK the clutch A piston return spring for damage. INSTALL new components as necessary.
REFER TO: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission - 10R80, Overhaul).
Clutch Friction Plates DISASSEMBLE and INSPECT clutch A 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).
Delayed/soft/slipping clutch 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).
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).
SSA mechanically stuck on
  • 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 shift solenoid.
    REFER TO: Shift Solenoids (SS) (307-01B Automatic Transmission - 10-Speed Automatic Transmission - 10R80, Removal and Installation).
Clutch 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 the clutch A 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 latch 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 clutch A latch 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 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 A.
REFER TO: Special Test Procedures (307-01A Automatic Transmission - 10-Speed Automatic Transmission - 10R60, Diagnosis and Testing).
If a leak is found, INSPECT the front support assembly and clutch 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 A piston seals for wear and damage. INSTALL new components as necessary.
REFER TO: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission - 10R80, Overhaul).
Clutch Friction Plates DISASSEMBLE and INSPECT clutch A 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).
Hard clutch 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).
SSA mechanically stuck on
  • 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 shift solenoid.
    REFER TO: Shift Solenoids (SS) (307-01B Automatic Transmission - 10-Speed Automatic Transmission - 10R80, Removal and Installation).
Clutch 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 the clutch A 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 latch 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 clutch A latch 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 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).
Clutch Piston Return Spring INSPECT and CHECK the clutch A piston return spring for damage. INSTALL new components as necessary.
REFER TO: Transmission (307-01B Automatic Transmission - 10-Speed Automatic Transmission - 10R80, Overhaul).
Clutch Friction Plates DISASSEMBLE and INSPECT clutch A 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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