Symptom Chart: D Clutch
WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
For D clutch operation, REFER to: Transmission Description - System Operation and Component Description .
| Condition | Possible Sources | Action |
|---|---|---|
| D clutch does not apply | SSD is mechanically stuck OFF | INSTALL a new solenoid. REFER to: Shift Solenoids (SS) . |
| D Clutch regulator valve stuck OFF | DISASSEMBLE, CLEAN and INSPECT the regulator valve. If bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body . PERFORM the Transmission Strategy Download, REFER to: Transmission Strategy Download . | |
| D CL CONTR, hydraulic circuit 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 . | |
| D clutch hub | INSPECT components wear and damage. CLEAN and/or INSTALL new components as necessary. REFER to: Transmission . | |
| D clutch friction plates | INSPECT components wear and damage. CLEAN and/or INSTALL new components as necessary. REFER to: Transmission . | |
| D clutch piston seals | INSPECT components wear and damage. CLEAN and/or INSTALL new components as necessary. REFER to: Transmission . | |
| D clutch always applied | SSD mechanically stuck | INSTALL a new solenoid. REFER to: Shift Solenoids (SS) . |
| D Clutch regulator valve or CL D latch valve stuck ON | DISASSEMBLE, CLEAN and INSPECT the regulator valve. If bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body . . PERFORM the Transmission Strategy Download, REFER to: Transmission Strategy Download . | |
| D CL CONTR, hydraulic circuit cross leaks | DISASSEMBLE and INSPECT the main control valve body and separator plate passages for debris/blockage. CLEAN as necessary. REFER to: Main Control Valve Body . . | |
| D clutch hub, clutch and planetary carrier, No. 4 ring gear | INSPECT components wear and damage. CLEAN and/or INSTALL new components as necessary. REFER to: Transmission . | |
| D clutch friction plates | INSPECT components wear and damage. CLEAN and/or INSTALL new components as necessary. REFER to: Transmission . | |
| D clutch piston seals | INSPECT components wear and damage. CLEAN and/or INSTALL new components as necessary. REFER to: Transmission . | |
| D clutch delayed/soft/slipping apply | Incorrect transmission strategy programmed into PCM/ TCM. | PERFORM the Transmission Strategy Download, REFER to: Transmission Strategy Download . |
| Low line pressure | PERFORM line pressure test. REFER to: Special Testing Procedures . | |
| SSD mechanically sticking | INSTALL a new solenoid. REFER to: Shift Solenoids (SS) . | |
| D Clutch regulator valve sticking | DISASSEMBLE, CLEAN and INSPECT the valve. If bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body . PERFORM the Transmission Strategy Download, REFER to: Transmission Strategy Download . | |
| Gain control valve stuck in default position. | DISASSEMBLE, CLEAN and INSPECT the valve. If bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body . PERFORM the Transmission Strategy Download, REFER to: Transmission Strategy Download . | |
| D CL CONTR, D CL-FB2 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 . | |
| D clutch friction plates | DISASSEMBLE and INSPECT the transmission passages for debris/blockage. CLEAN as necessary. REFER to: Transmission . | |
| D clutch piston seals | DISASSEMBLE and INSPECT the transmission passages for debris/blockage. CLEAN as necessary. REFER to: Transmission . | |
| D clutch harsh apply | Incorrect transmission strategy programmed into PCM/ TCM. | PERFORM the Transmission Strategy Download, REFER to: Transmission . |
| High line pressure | PERFORM line pressure test. REFER to: Special Testing Procedures . | |
| SSD mechanically sticking | INSTALL a new solenoid. REFER to: Shift Solenoids (SS) . | |
| D Clutch regulator valve sticking | DISASSEMBLE, CLEAN and INSPECT the valves. If bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body . . PERFORM the Transmission Strategy Download, REFER to: Transmission Strategy Download . | |
| Gain control valve stuck in applied position | DISASSEMBLE, CLEAN and INSPECT the valve. If bore or valve is damaged, INSTALL a new main control valve body. PERFORM the Transmission Strategy Download, REFER to: Transmission Strategy Download . | |
| D CL CONTR, D CL-FB2 hydraulic circuit 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 . PERFORM the Transmission Strategy Download, REFER to: Transmission Strategy Download . | |
| D clutch friction plates | DISASSEMBLE and INSPECT the transmission passages for debris/blockage. CLEAN as necessary. REFER to: Transmission . | |
| D clutch piston return springs | DISASSEMBLE and INSPECT the transmission passages for debris/blockage. CLEAN as necessary. REFER to: Transmission . |