Programming and Relearning

Auxiliary Brake System - Trailer Brake Control (TBC) Module

Programmable Parameters

The message center will display TBC FAULT if it is receiving communications from the Trailer Brake Control (TBC) module, but has not been configured for a trailer brake system. If the message center displays TBC FAULT and there are no DTCs stored in the TBC module, follow these steps to verify and/or modify the TBC module programmable parameter in the Instrument Cluster (IC).

1. Identify the vehicle using the normal Integrated Diagnostic System (IDS) process.

2. Select Programming and press the check box.

3. Select Module Programming and press the check box.

4. Select Programmable Parameters and press the check box.

5. Select Personality and press the check box.

6. Follow the on-screen directions.

7. NOTE: The scan tool will display either EQUIPPED or NOT EQUIPPED to the left of TBC-IC.

Highlight TBC-IC.

8. If the IC needs to be configured for a trailer brake system, choose EQUIPPED and press the check box.

9. Carry out a self-test of the TBC module. Refer to the Trailer Brake Control (TBC) Module DTC Chart for any DTCs retrieved. Diagnostic Trouble Code Tests and Associated Procedures