Control Module: Service and Repair

Transmission Control Module, Replacing

• To achieve optimal anti-theft protection for the vehicle, an anti-theft immobilizer was installed. The anti-theft immobilizer is a system for enabling/locking the Transmission Control Module (TCM) (J217).

• To perform adaptation of the anti-theft immobilizer.

Procedure

Check the identification of the previous Transmission Control Module (TCM) (J217) as follows:

- Connect the scan tool.

- Switch the ignition on.

- Select "Diagnostic mode 9: Vehicle information."

- Select the"Test-ID 04: Calibration identification".

- The Transmission Control Module (TCM) (J217) identification will be displayed, e.g.: 09G27750 L 0301

- End diagnosis and switch the ignition off.

- Replace the Mechatronic unit in the transmission. Refer to Automatic Transmission Repair Information.

After installing new Transmission Control Module (TCM), the following work steps must be performed:

- The New Transmission Control Module (TCM) (J217 ) must be activated.

Final procedures

1. Check the DTC memory. => [ Diagnostic Mode 03 - Read DTC Memory ] Diagnostic Mode 03 - Read DTC Memory.

2. If necessary, erase DTC memory of the Transmission Control Module (TCM) (J217). => [ Diagnostic Mode 04 - Erase DTC Memory ] Diagnostic Mode 04 - Erase DTC Memory.

3. Generate readiness code. => [ Readiness Code ] Monitors, Trips, Drive Cycles and Readiness Codes.

End of diagnosis