Torque Converter Clutch Solenoid: Service and Repair

Electronic Pressure Control (EPC) Solenoid





Removal

1. WARNING: Before servicing a vehicle equipped with a fire suppression system, depower the system by following the procedure in Fire Suppression System. Failure to follow the instructions may result in serious personal injury.

Remove the manual control lever.

2. CAUTION: Do not pull on the molded lead frame. This may cause damage to the connector ends. Carefully pry up on the locking tabs to disconnect the solenoids. Disconnect the molded lead frame from the solenoids.

Disconnect the molded lead frame from the solenoids.
1. Disconnect the shift solenoid SSA and SSB.
2. Disconnect the torque converter clutch (TCC).
3. Disconnect the electronic pressure control (EPC) solenoid.
4. Disconnect the bulkhead inter-connector.





3. Remove the EPC solenoid.
1. Remove the bolt and EPC solenoid bracket.
2. Remove the EPC solenoid.





Installation
1. Install the EPC solenoid.
1. Install the EPC solenoid.
2. Install the EPC solenoid bracket and bolt.
^ Tighten to 10 Nm (89 lb-inch).





2. Inspect the lead frame for damage.
^ Using the special tool, check all lead frame solenoid connections. The gauge should fit tightly and not fall out after being inserted.
^ If the special tool passes through any lead frame connector pins or does not feel like it makes a good contact, install a new lead frame.





3. Connect the molded lead frame to the solenoids.
^ Connect the bulkhead inter-connector by pressing it in place by hand and fully seating the connector in place.
^ Connect the EPC solenoid by pressing it in place by hand and fully seating the connector in place. Make sure that the terminals pass fully through the connector slots.
^ Connect the TCC by pressing it in place by hand and fully seating the connector in place. Make sure that the terminals pass fully through the connector slots.
^ Connect the shift solenoid SSA and SSB by pressing it in place by hand and fully seating the connector in place. Make sure that the terminals pass fully through the connector slots.





4. Install the manual control lever.

5. WARNING: If the vehicle is equipped with a fire suppression system, repower the system. For important safety warnings and procedures, refer to Fire Suppression System. Failure to follow these instructions may result in serious personal injury.

If equipped with fire suppression system, repower the system.