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

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

Normal Operation
The traction control indicator flashes when the vehicle traction control is in active mode or is being controlled by the ABS module. The instrument cluster (IC) receives the traction control data from the ABS module over the high speed controller area network (HS-CAN) communication bus. The instrument cluster (IC) monitors the traction control message and when the ABS module detects a traction control concern, the instrument cluster (IC) illuminates the traction control indicator. If the traction control message is missing for more than 5 seconds, the instrument cluster (IC) sets DTC U0121 in continuous memory and defaults the traction control indicator on.

This pinpoint test is intended to diagnose the following:
- Traction control system
- ABS module
- Instrument cluster (IC)

X1-X4:

X5-X7: