Low Reverse Clutch Assembly
WARNING: This page is about a different car, the 2018 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
Low/Reverse Clutch
For low/reverse clutch operation, REFER to: Low/Reverse Clutch Assembly .
Low/Reverse Clutch
| Condition | Possible Sources | Action |
|---|---|---|
| Low/Reverse clutch does not apply | Solenoid body filter blocked to SSD | CLEAN or INSTALL a new solenoid body filter screen. REFER to: Solenoid Body . |
| SSD is mechanically stuck OFF | INSTALL a new solenoid body. REFER to: Solenoid Body . PERFORM the Transmission Strategy Download. REFER to: Transmission Strategy Download . | |
| Low/Reverse clutch (CBLR/C456) regulator valve stuck OFF | REMOVE the main control valve body. REFER to: Main Control Valve Body . DISASSEMBLE, CLEAN and INSPECT the low/reverse clutch regulator valve. REFER to: Main Control Valve Body . If the bore or valve is damaged, INSTALL a new main control. REFER to: Main Control Valve Body . | |
| SSD SIG, CBLR/C456 SUPPLY, CBLR SUPPLY hydraulic circuits blocked/leaking | REMOVE the main control valve body. REFER to: Main Control Valve Body . DISASSEMBLE and INSPECT the main control valve body and separator plate passages for debris/blockage. REFER to: Main Control Valve Body . CLEAN as necessary. | |
| REV/Shift Solenoid E (SSE) SIG to multiplex shift valve shuttle ball missing/damaged | REMOVE the main control valve body. REFER to: Main Control Valve Body . DISASSEMBLE the main control valve body and INSPECT the check ball missing/damage. REFER to: Main Control Valve Body . | |
| Multiplex shift valve stuck in default position | REMOVE the main control valve body. REFER to: Main Control Valve Body . DISASSEMBLE, CLEAN and INSPECT the multiplex shift valve. REFER to: Main Control Valve Body . If the bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body . | |
| CBLR supply hydraulic circuit blocked or leaking | DISASSEMBLE and INSPECT the transmission cover passages for debris/blockage. REFER to: Transmission . CLEAN as necessary. | |
| Rear planetary carrier/center ring gear | INSPECT the planetary carrier/center ring gear for wear and damage that would prevent the gear from being held. INSTALL new components as necessary. REFER to: Transmission . | |
| Low/Reverse clutch friction plates | DISASSEMBLE and INSPECT the low/reverse clutch friction and steel plates. INSTALL new components as necessary. REFER to: Transmission . | |
| Low/Reverse clutch piston seal leakage | INSTALL a new low/reverse clutch piston and seals. REFER to: Transmission . | |
| Low/Reverse clutch always applied | Solenoid body filter seal damaged at Shift Solenoid D (SSD) | INSTALL a new solenoid body filter screen. REFER to: Solenoid Body . |
| SSD mechanically stuck ON | INSTALL a new solenoid body. REFER to: Solenoid Body . PERFORM the Transmission Strategy Download. REFER to: Transmission Strategy Download . | |
| Low/Reverse clutch (CBLR/C456) regulator valve stuck ON | REMOVE the main control valve body. REFER to: Main Control Valve Body . DISASSEMBLE, CLEAN and INSPECT the low/reverse clutch regulator valve and bias spring. REFER to: Main Control Valve Body . If the bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body . | |
| SSD SIG, CBLR/C456 SUPPLY, CBLR SUPPLY hydraulic circuits blocked/leaking | REMOVE the main control valve body. REFER to: Main Control Valve Body . DISASSEMBLE and INSPECT the main control valve body and separator plate passages for leakage. REFER to: Main Control Valve Body . CLEAN as necessary. | |
| Low One-Way Clutch (OWC) | INSPECT the Low One-Way Clutch (OWC) for free rotation in over-run direction. INSTALL new components as necessary. REFER to: Transmission . | |
| Low/Reverse clutch friction plates | DISASSEMBLE and INSPECT the low/reverse clutch friction and steel plates. INSTALL new components as necessary. REFER to: Transmission . | |
| Low/Reverse clutch piston return spring | INSPECT the return spring for damage. INSTALL new components as necessary. REFER to: Transmission . | |
| Low/Reverse clutch delayed/soft/slipping apply | Incorrect Transmission Strategy programmed into PCM | PERFORM the Transmission Strategy Download. REFER to: Transmission Strategy Download . |
| Solenoid body filter seal damaged at Shift Solenoid D (SSD) | INSTALL a new solenoid body filter screen. REFER to: Solenoid Body . | |
| SSD mechanically sticking | INSTALL a new solenoid body. REFER to: Solenoid Body . PERFORM the Transmission Strategy Download. REFER to: Transmission Strategy Download . | |
| Low/Reverse clutch (CBLR/C456) regulator valve sticking | REMOVE the main control valve body. REFER to: Main Control Valve Body . DISASSEMBLE, CLEAN and INSPECT the low/reverse clutch regulator valve. REFER to: Main Control Valve Body . If the bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body . | |
| Low/Reverse clutch (CBLR/C456) boost valve stuck ON | REMOVE the main control valve body. REFER to: Main Control Valve Body . DISASSEMBLE, CLEAN and INSPECT the low/reverse clutch boost valve. REFER to: Main Control Valve Body . If the bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body . | |
| SSD SIG, CBLR/C456 SUPPLY, CBLR SUPPLY hydraulic circuits blocked/leaking | REMOVE the main control valve body. REFER to: Main Control Valve Body . DISASSEMBLE and INSPECT the main control and separator plate passages for debris/blockage. REFER to: Main Control Valve Body . CLEAN as necessary. | |
| REV/SSE SIG to multiplex shift valve shuttle ball missing/damaged | REMOVE the main control valve body. REFER to: Main Control Valve Body . DISASSEMBLE the main control valve body and INSPECT the check ball missing/damage. REFER to: Main Control Valve Body . | |
| CBLR supply hydraulic circuit blocked or leaking | DISASSEMBLE and INSPECT the transmission cover passages for debris/blockage. REFER to: Transmission . CLEAN as necessary. | |
| Low/Reverse clutch friction plates | DISASSEMBLE and INSPECT the low/reverse clutch friction and steel plates. INSTALL new components as necessary. REFER to: Transmission . | |
| Low/Reverse clutch piston seal leakage | INSTALL a new low/reverse clutch piston and seals. REFER to: Transmission . | |
| Low/Reverse clutch harsh apply | Incorrect Transmission Strategy programmed into PCM | PERFORM the Transmission Strategy Download. REFER to: Transmission Strategy Download . |
| SSD mechanically sticking | INSTALL a new solenoid body. REFER to: Solenoid Body . PERFORM the Transmission Strategy Download. REFER to: Transmission Strategy Download . | |
| Low/Reverse clutch regulator valve sticking | REMOVE the main control valve body. REFER to: Main Control Valve Body . DISASSEMBLE, CLEAN and INSPECT the low/reverse clutch regulator valve and bias spring. REFER to: Main Control Valve Body . If the bore, valve or spring is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body . | |
| Low/Reverse clutch (CBLR/C456) boost valve sticking | REMOVE the main control valve body. REFER to: Main Control Valve Body . DISASSEMBLE, CLEAN and INSPECT the low/reverse clutch boost valve and bias spring. REFER to: Main Control Valve Body . If the bore, valve or spring is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body . | |
| SSD SIG, CBLR/C456 SUPPLY, CBLR SUPPLY hydraulic circuits blocked/leaking | REMOVE the main control valve body. REFER to: Main Control Valve Body . DISASSEMBLE and INSPECT the main control valve body and separator plate passages for debris/blockage. REFER to: Main Control Valve Body . CLEAN as necessary. | |
| Low/Reverse clutch friction plates | DISASSEMBLE and INSPECT the low/reverse clutch friction and steel plates. INSTALL new components as necessary. REFER to: Transmission . | |
| Low/Reverse clutch piston return spring | INSPECT the return spring for proper installation and damage. INSTALL new components as necessary. REFER to: Transmission . |