Traction Off Indicator Inoperative

Traction Off Indicator Inoperative

Diagnostic Fault Information

Important: Always perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Diagnostic System Check - Vehicle

Circuit/System Description

The instrument panel cluster (IPC) illuminates the traction off indicator by supplying ground to the lamp. The electronic brake control module (EBCM) sends a serial data messages to the IPC, in order to command the indicator ON or OFF.

Circuit/System Testing

Note: Diagnose all vehicle DTCs before using this diagnostic.

1. With the scan tool, select instrument panel special functions Lamp Test. Command the instrument panel warning lamps ON.
^ If the ABS warning lamp does not turn on, replace the IPC.

2. Turn the ignition OFF. Disconnect the traction control switch harness connector. Turn the ignition ON. Touch and release a 3-amp fused jumper wire between ground and the Traction Control System (TCS) switch signal circuit.
^ If the traction off indicator illuminates, replace the traction control switch.

3. Disconnect the body control module (BCM) harness connector. Touch and release a 3-amp fused jumper wire between ground and the TCS switch signal circuit at the BCM.
^ If the traction off indicator illuminates, repair an open in the TCS switch signal circuit.
^ If the traction off indicator does not illuminate replace the BCM.

Repair Instructions

Important: Always perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests

Control Module References for EBCM, IPC, or BCM replacement, setup, and programming