Test Q: The Traction Control Indicator Is Never/Always On

PINPOINT TEST Q: THE TRACTION CONTROL INDICATOR IS NEVER/ALWAYS ON

Normal Operation
The instrument cluster (IC) receives the traction control data from the PCM over the high speed controller area network (HS-CAN) communication bus. The traction control indicator flashes when the vehicle traction control is in active mode or is being controlled by the PCM. The traction control indicator turns on steady if the traction control system has been disabled through the traction control switch or if a fault condition exists in the system. The instrument cluster (IC) monitors the traction control message from the PCM and either flashes the traction control indicator or turns it on steady depending on the condition. If the traction control message is missing for more than 5 seconds, the instrument cluster (IC) sets DTC U0101 in continuous memory and defaults the traction control indicator on.

NOTE: If DTC U0101 is set in the instrument cluster (IC), other observable symptoms may be an inoperative speedometer, tachometer or odometer.

Possible Causes
- Traction control concern
- PCM
- Instrument cluster (IC)

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