Transmission Control Module

Special tools and workshop equipment required

Torque Wrench (5-50 Nm) V.A.G 1331
Vehicle Diagnostic, Testing, and Information System VAS 5051

Removing

-- Before removing the Transmission Control Module (TCM) -J217-, the control module identification as well as the coding must be queried from the control module.

NOTE:

To prevent damage to the front trim under the right front seat, the retaining tabs on the trim are displayed in the following illustration.

The retaining tabs -A- grab behind a crossmember under the seat. The trim must be pushed down and back at the same time. Hold the trim in this position and pull upward in the area of the retaining tabs -A- to release them.

Fig 1: Identifying Front Seat Retaining Tabs

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

The retaining tabs -B- grab in the recesses of the crossmember in front of the seat. These are released by pushing down and pulling forward.

The retaining tabs -C- are clipped into the side trim of the seat and are released by pulling forward.

-- Move the seat to the most rear and upward position.

-- Release the retaining tabs "A" -arrows A- by pressing down and pushing rearward at the same time. In this position, lift the trim in the area of the retaining tabs "A" -arrows A-.

Fig 2: Releasing Retaining Tabs

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Press the trim down and pull forward at the same time. Thereby the retaining tabs "B" -arrows B- and "C" -arrows C- are released.

-- Move the seat to the most front and upward position.

-- The procedure for disconnecting the batteries must absolutely be obeyed.

-- Disconnect the battery Ground (GND) cable with the ignition turned off. Refer to Removal and Installation .

Located in the housing -1- is the TCM and the differential control module -J646-.

Fig 3: Disconnecting Differential Control Module J646 Electrical Harness Connector And Transmission Control Module (TCM) J217 Electrical Harness Connector

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Release and disconnect the connectors from the differential control module -2- and TCM -3-.

-- Remove the bolt -arrow- and remove the housing with the control modules from the mounting.

Fig 4: Identifying Housing With Control Modules Bolt

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Pull the retaining tabs outward -arrows 1- and pull the control module out from the housing -arrow 2-.

Fig 5: Pulling Retaining Tabs Outward And Pulling Control Module Out From Housing

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Installing

Installation is performed in the reverse order of removal. Pay attention to the following:

-- Verify the previous coding, and code the new control module.

-- Install the seat trim. Refer to Removal and Installation .

-- Observe the work sequence after connecting the battery. Refer to Removal and Installation .