Normal Operation

The traction control system can be disabled by pressing the traction control switch located on the instrument panel. When the system is disabled, the traction control/stability assist indicator (sliding-car icon) in the Instrument Cluster (IC) will illuminate solidly.

The IC sends 5 volts to the traction control switch along circuit CCA15 (YE/GY). When the traction control switch is pressed, this voltage is sent through the switch and to ground along circuit GD134 (BK/VT). When the IC detects this ground, it sends a message to the PCM and the ABS module along the High Speed Controller Area Network (HS-CAN) bus that the driver has disabled the system.

• DTC C1093 (Traction Control Disable Switch Circuit Failure) - If the traction control switch closed for more than 2 minutes or if there is a short to ground on circuit CCA15 (YE/GY) during normal operation, DTC C1093 will be set. If the traction control switch closed during the IC self-test and for more than 2 minutes in during normal operation, DTC C1093 will be set.

This pinpoint test is intended to diagnose the following: 

• Wiring, terminals or connectors
• Traction control switch
• IC