Symptom Chart: B 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 B clutch operation, REFER to: Transmission Description - System Operation and Component Description .
| Condition | Possible Sources | Action |
|---|---|---|
| B clutch does not apply | SSB is mechanically stuck OFF | INSTALL a new solenoid. REFER to:SHIFT SOLENOIDS (SS) . |
| B 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 . | |
| B 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 . | |
| B clutch hub | INSPECT components wear and damage. CLEAN and/or INSTALL new components necessary. REFER to: Transmission . | |
| B clutch friction plates | INSPECT components wear and damage. CLEAN and/or INSTALL new components necessary. REFER to: Transmission . | |
| B clutch piston seals | INSPECT components wear and damage. CLEAN and/or INSTALL new components necessary. REFER to: Transmission . | |
| B clutch always applied | SSB mechanically stuck | INSTALL a new solenoid. REFER to:SHIFT SOLENOIDS (SS) . |
| B Clutch regulator valve or CL B 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 (307-01B). REFER to:Main Control Valve Body . PERFORM the Transmission Strategy Download, REFER to: Transmission Strategy Download . | |
| B 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 . | |
| B clutch hub, clutch and planetary carrier, No. 4 ring gear | INSPECT components wear and damage. CLEAN and/or INSTALL new components necessary. REFER to: Transmission . | |
| B clutch friction plates | INSPECT components wear and damage. CLEAN and/or INSTALL new components necessary. REFER to: Transmission . | |
| B clutch piston seals | INSPECT components wear and damage. CLEAN and/or INSTALL new components necessary. REFER to: Transmission . | |
| B 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 . | |
| SSB mechanically sticking | INSTALL a new solenoid. REFER to:SHIFT SOLENOIDS (SS) . | |
| B 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 . | |
| B CL CONTR, 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 . | |
| B clutch friction plates | DISASSEMBLE and INSPECT the transmission passages for debris/blockage. CLEAN as necessary. REFER to: Transmission . | |
| B clutch piston seals | DISASSEMBLE and INSPECT the transmission passages for debris/blockage. CLEAN as necessary. REFER to: Transmission . | |
| B 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 . | |
| SSB mechanically sticking | INSTALL a new solenoid. REFER to:SHIFT SOLENOIDS (SS) . | |
| B 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 . | |
| B 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 . | |
| B clutch friction plates | DISASSEMBLE and INSPECT the transmission passages for debris/blockage. CLEAN as necessary. REFER to: Transmission . | |
| B clutch piston return springs | DISASSEMBLE and INSPECT the transmission passages for debris/blockage. CLEAN as necessary. REFER to: Transmission . |