Control Module: Service and Repair

Transmission Control Module (TCM)

Service Repair No - 44.15.46

Special Service Tools





Removal

NOTE: The transmission control module (TCM) is part of the main control valve body and cannot be serviced separately.

1. Disconnect the battery ground cable.

2. WARNING: Do not work on or under a vehicle supported only by a jack. Always support the vehicle on safety stands.

Raise and support the vehicle.
3. Remove the fluid pan.
4. Disconnect the electrical connector.





5. Remove and discard the electrical connector sleeve.
^ Release the retainer.





6. Remove the main control valve body.
^ Position a container to collect spillage.
^ Remove the 10 Torx screws.





7. Using the special tool, remove the 4 seals.
8. Remove the seal block.





Installation

1. CAUTION: Make sure that when fully fitted, all seals protrude by the same amount.

CAUTION: Engage the selector lever with the groove in the piston rod.

Install the main control valve body.
^ Clean the component mating faces.
^ Install new seals.
^ Install a new seal block.
^ Tighten the Torx screws to 8 Nm (6 ft. lbs.).





2. Install a new electrical connector sleeve.
^ Secure with retainer.

3. Connect the electrical connector.
4. Install the fluid pan.
5. Connect the battery ground cable.
6. Calibrate a new main control valve body using T4.