Control Module: Service and Repair

Transmission Control Module (TCM)

Special Service Tools






ZF Automatic transmission valve block seals remover

307-492 (LRT-44-005)

Removal

NOTE:
The transmission control module (TCM) is part of the main control valve body and cannot be serviced separately.
1
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.
2 Remove the fluid pan. For additional information, refer to Fluid Pan, Gasket and Filter Service and Repair




3 Disconnect the electrical connector.




4 Remove and discard the electrical connector sleeve.
- Release the retainer.




5 Remove the valve body.
- Position a container to collect spillage.
- Remove the 10 Torx screws.
6 Using the special tool, remove the 4 seals.




7 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 valve body.
- Clean the component mating faces.
- Install new seals.
- Install a new seal block.
- Tighten the Torx screws to 8 Nm (6 lb.ft).
2 Install a new electrical connector sleeve.
- Secure with retainer.
3 Connect the electrical connector.
4 Install the fluid pan. For additional information, refer to Fluid Pan, Gasket and Filter Service and Repair
5 Calibrate a new main control valve body using T4.