Test J: the Traction Control System Cannot Be Disabled

Test J: The Traction Control System Cannot Be Disabled

Refer to Vehicle/Diagrams, Instrument Cluster for schematic and connector information.

Normal Operation
Engine torque modulation is achieved by regulating fuel and spark to the cylinders. The traction control system operates using the anti-lock brake system (ABS) module to interact with the powertrain control module (PCM) to reduce engine torque if the wheels lose traction and begin to spin during acceleration.

The instrument cluster sends a voltage reference signal to the traction control switch along circuit 1412 (WH/PK). When the traction control switch is pressed, the signal is grounded along circuit 1205 (BK). The instrument cluster then sends a traction control disable command over the controller area network (CAN).

Possible Causes
^ Circuit shorted
^ Circuit open
^ Instrument cluster
^ Traction control switch

CAUTION: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.

J1:

J1-J4:

J4-J6:

J7: