Transmission Control Module, Replacing

First, 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 remove 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 the new control module identification matches the old control module identification.

-- Code the Transmission Control Module (TCM):

-- Generate readiness code.