Transmission Control Module, Replacing

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

-- Connect diagnostic tester.

-- Switch ignition on.

-- Under address word 33, select "Diagnostic mode 9: vehicle information".

-- Select the vehicle information "Test-ID 04: Calibration Identification".

Control module identification will be indicated, e.g.:

09G927750 L 0301

-- End diagnosis and switch ignition off.

NOTE:

Transmission Control Module (TCM) is located in front right, below passenger seat.

-- Disengage connector -A- from control module and then disconnect it.

Fig 1: Disengaging Connector From Control Module & Connecting VAG 1598/22 Test Box At Control Module Wiring Harness

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove old control module and insert new one.

-- Check whether new control module identification matches the old control module identification.

-- Code the Transmission Control Module (TCM): Refer to appropriate SYSTEMS WIRING DIAGRAM

Final Procedures

After the repair work, the following work steps must be performed in the following sequence:

Check the DTC memory. Refer to DIAGNOSTIC MODE 03 - READ DTC MEMORY .
If necessary, erase the DTC memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY .
If the DTC memory was erased, generate readiness code. Refer to READINESS CODE .