Ford Fusion Manuals

Ford Fusion: Automatic Transmission - 6-Speed Automatic Transmission – 6F35 / Forward Clutch Assembly. Diagnosis and Testing

Symptom Chart

Forward Clutch

For forward (1,2,3,4) clutch operation,
REFER to: Transmission Description - System Operation and Component Description (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Description and Operation).
REFER to: Forward Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Description and Operation).


  Forward Clutch


Condition Possible Sources Action
Forward (1,2,3,4) clutch does not apply SSA solenoid filter blocked CLEAN or INSTALL a new solenoid. REFER to: Solenoid (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Removal and Installation).
SSA is mechanically stuck OFF INSTALL a new solenoid. REFER to: Solenoid (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Removal and Installation).
Forward (1,2,3,4) clutch regulator valve stuck OFF DISASSEMBLE, CLEAN and INSPECT the forward (1,2,3,4) clutch regulator valve. If bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
VBS 1234, VBSC 1234, and C1234 DISASSEMBLE and INSPECT the main control and separator plate passages for debris/blockage. CLEAN as necessary. REFER to: Main Control Valve Body (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
Forward (1,2,3,4) clutch main control-to-transmission case REMOVE the main control valve body, REFER to: Main Control Valve Body (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
INSPECT the seal between the main control valve body and the transmission case for missing or damaged seal. INSTALL a new seal.
Front planetary sun gear and shell assembly INSPECT the sun gear and shell for wear and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
Forward (1,2,3,4) clutch snap ring INSPECT the snap ring for proper seating in case.
REFER to: Transmission (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
Forward (1,2,3,4) clutch steel plate DISASSEMBLE and INSPECT the forward (1,2,3,4) clutch steel plates. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
Forward (1,2,3,4) clutch friction plates DISASSEMBLE and INSPECT the forward (1,2,3,4) clutch friction and steel plates. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
Forward (1,2,3,4) clutch piston seal leakage. INSTALL a new forward (1,2,3,4) clutch piston.
REFER to: Transmission (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
- Center support cracked or leaking. INSPECT the center support for damage. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
Forward (1,2,3,4) clutch always applied SSA solenoid damaged INSTALL a new solenoid. REFER to: Solenoid (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Removal and Installation).
SSA mechanically stuck ON INSTALL a new solenoid. REFER to: Solenoid (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Removal and Installation).
Forward (1,2,3,4) clutch regulator valve stuck ON DISASSEMBLE, CLEAN and INSPECT the forward (1,2,3,4) clutch regulator valve. If bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
VBS 1234, VBSC 1234, and C1234 DISASSEMBLE and INSPECT the main control valve body and separator plate passages for leakage. CLEAN as necessary. REFER to: Main Control Valve Body (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
Front planetary sun gear and shell assembly INSPECT the sun gear and shell for damage that would prevent free rotation. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
Forward (1,2,3,4) clutch friction plates DISASSEMBLE and INSPECT the forward (1,2,3,4) clutch friction and steel plates. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
Forward (1,2,3,4) clutch piston return spring INSPECT the return spring for proper installation and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
Forward (1,2,3,4) clutch delayed/soft/slipping apply Incorrect Transmission Strategy programmed into PCM Remove SSA and record solenoid band number. REFER to: Solenoid (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Removal and Installation).
Using the scan tool, verify the correct band number is stored in the PCM. If band numbers do not match, replace SSA with correct band number.
SSA solenoid filter partially blocked or restricted CLEAN or INSTALL a new solenoid. REFER to: Solenoid (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Removal and Installation).
SSA mechanically sticking INSTALL a new solenoid. REFER to: Solenoid (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Removal and Installation).
Forward (1,2,3,4) clutch regulator valve sticking DISASSEMBLE, CLEAN and INSPECT the forward (1,2,3,4) clutch regulator valve. If bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
Forward (1,2,3,4) clutch valve stuck ON DISASSEMBLE, CLEAN and INSPECT the forward (1,2,3,4) clutch latch valve and spring. If bore, valve or spring is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
  VBS 1234, VBSC 1234, and C1234 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 - 6-Speed Automatic Transmission – 6F35, Overhaul).
Forward (1,2,3,4) clutch main control-to-transmission case REMOVE the main control valve body, REFER to: Main Control Valve Body (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
INSPECT the seal between the main control valve body and the transmission case for missing or damaged seal. INSTALL a new seal.
Forward (1,2,3,4) clutch friction and steel plates. DISASSEMBLE and INSPECT the forward (1,2,3,4) clutch friction and steel plates. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
Forward (1,2,3,4) clutch piston return spring INSPECT the return spring for proper installation and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
Center support cracked or leaking. INSPECT the center support for damage. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
Forward (1,2,3,4) clutch harsh apply Incorrect Transmission Strategy programmed into PCM Remove SSA and record solenoid band number. REFER to: Solenoid (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Removal and Installation).
Using the scan tool, verify the correct band number is stored in the PCM. If band numbers do not match, replace SSA with correct band number.
SSA mechanically sticking INSTALL a new solenoid. REFER to: Solenoid (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Removal and Installation).
Forward (1,2,3,4) clutch regulator valve sticking DISASSEMBLE, CLEAN and INSPECT the forward (1,2,3,4) clutch regulator valve and spring. If bore, valve or spring is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
Forward (1,2,3,4) clutch latch valve sticking DISASSEMBLE, CLEAN and INSPECT the forward (1,2,3,4) clutch latch valve and spring. If bore, valve or spring is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
VBS 1234, VBSC 1234, and C1234 hydraulic circuits leaking DISASSEMBLE and INSPECT the main control and separator plate passages for leakage. INSTALL new components as necessary. REFER to: Main Control Valve Body (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
Forward (1,2,3,4) clutch piston return spring INSPECT the return spring for proper installation and damage. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
Forward (1,2,3,4) clutch friction and steel plates DISASSEMBLE and INSPECT the forward (1,2,3,4) clutch friction and steel plates. INSTALL new components as necessary.
REFER to: Transmission (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).

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