Ford Ecosport: Automatic Transmission - 6-Speed Automatic Transmission – 6F35 / Diagnosis and Testing - Forward Clutch Assembly
Ford Ecosport 2014-2024 Service and Repair Manual / Automatic Transmission / Automatic Transmission - 6-Speed Automatic Transmission – 6F35 / Diagnosis and Testing - Forward Clutch Assembly
Symptom Chart
Forward Clutch
For forward (1,2,3,4) clutch operation,
REFER to: Transmission
Description (307-01B Automatic Transmission - 6-Speed Automatic
Transmission – 6F35, Description and Operation).
REFER to: Forward Clutch Assembly (307-01B 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 – 6F15, Removal and Installation). REFER to: Solenoid (307-01B 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 – 6F15, Removal and Installation). REFER to: Solenoid (307-01B 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 – 6F15, Overhaul). REFER to: Main Control Valve Body (307-01B 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 – 6F15, Overhaul). REFER to: Main Control Valve Body (307-01B 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 – 6F15, Overhaul). REFER to: Main Control Valve Body (307-01B 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 – 6F15, Overhaul). REFER to: Transmission (307-01B 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 – 6F15, Overhaul). REFER to: Transmission (307-01B 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 – 6F15, Overhaul). REFER to: Transmission (307-01B 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 – 6F15, Overhaul). REFER to: Transmission (307-01B 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 – 6F15, Overhaul). REFER to: Transmission (307-01B 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 – 6F15, Overhaul). REFER to: Transmission (307-01B 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 – 6F15, Removal and Installation). REFER to: Solenoid (307-01B 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 – 6F15, Removal and Installation). REFER to: Solenoid (307-01B 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 – 6F15, Overhaul). REFER to: Main Control Valve Body (307-01B 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 – 6F15, Overhaul). REFER to: Main Control Valve Body (307-01B 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 – 6F15, Overhaul). REFER to: Transmission (307-01B 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 – 6F15, Overhaul). REFER to: Transmission (307-01B 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 – 6F15, Overhaul). REFER to: Transmission (307-01B 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 – 6F15, Removal and Installation). REFER to: Solenoid (307-01B 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 – 6F15, Removal and Installation). REFER to: Solenoid (307-01B 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 – 6F15, Removal and Installation). REFER to: Solenoid (307-01B 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 – 6F15, Overhaul). REFER to: Main Control Valve Body (307-01B 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 – 6F15, Overhaul). REFER to: Main Control Valve Body (307-01B 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 – 6F15, Overhaul). REFER to: Main Control Valve Body (307-01B 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 – 6F15, Overhaul). REFER to: Main Control Valve Body (307-01B 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 – 6F15, Overhaul). REFER to: Transmission (307-01B 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 – 6F15, Overhaul). REFER to: Transmission (307-01B 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 – 6F15, Overhaul). REFER to: Transmission (307-01B 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 – 6F15, Removal and Installation). REFER to: Solenoid (307-01B 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 – 6F15, Removal and Installation). REFER to: Solenoid (307-01B 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 – 6F15, Overhaul). REFER to: Main Control Valve Body (307-01B 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 – 6F15, Overhaul). REFER to: Main Control Valve Body (307-01B 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 – 6F15, Overhaul). REFER to: Main Control Valve Body (307-01B 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 – 6F15, Overhaul). REFER to: Transmission (307-01B 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 – 6F15, Overhaul). REFER to: Transmission (307-01B Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul). |
Diagnosis and Testing - Direct Clutch Assembly
Direct Clutch
For direct (3,5,R) clutch operation, REFER to: Transmission
Description (307-01B Automatic Transmission - 6-Speed Automatic
Transmission – 6F35, Description and Operation)...
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