K

Traction Control Inoperative (Normal Lamp Sequence)
NOTE: The traction control system may be inhibited by a thermal module in the anti-lock brake control module. This thermal module calculates rear brake temperatures and if the temperatures reach a certain threshold, the ABS control module will inhibit traction control function to protect the rear brakes from overheating. Once the rear brakes have cooled down, the traction control will become functional again.

K1 - Check Switch
NOTE: Do not apply brake pedal while performing this test.

- Connect breakout box and adapter to Anti-lock Brake wiring connector C162 on the headlamp dash panel junction wire harness.
- Turn the ignition switch to the "RUN" position.
- Measure the voltage between breakout box pins 20 and 13.
- is battery voltage present ?
YES - Service Circuit 511 (LG). Run on-demand self test with scan tool.
NO - Go to K2.

K2 - Check Traction Traction Control Function
- Raise vehicle and support. All wheels should be free to turn.
- Start vehicle and shift transmission to "DRIVE".
- Do rear wheels start and stop as though the brakes are being applied and released ?
YES - Run on-demand self test.
NO - Check rear brake components. Re-verify symptoms, replace anti-lock brake control module.