I: the Traction Control System Cannot Be Disabled

Pinpoint Test I: The Traction Control System Cannot Be Disabled

Test I1-I4:

Test I4-I6:

Normal Operation
Engine torque modulation is achieved by regulating fuel and spark to the cylinders. The traction control system operates using the Antilock Brake System (ABS) ) module to interact with the Powertrain Control Module (PCM) to reduce engine torque and apply the brakes if the wheels lose traction and begin to spin during acceleration.

The instrument cluster circuit 1412 (WH/PK) monitors for a ground (change of state). When the traction control switch is pressed momentary ground occurs through circuit 1205 (BK). The instrument cluster then sends a voltage to the traction control switch through circuit 939 (VT) illuminating the traction control switch and disabling the system.

Possible Causes
^ circuit 1205 (BK) open
^ circuit 1412 (WH/PK) open or short to ground
^ traction control switch
^ ABS module
^ instrument cluster

CAUTION: Use the flex probe kit for all test connections to prevent damage to the wiring terminals. Do not use standard multimeter probes.