Traction Off Indicator Always On

Traction Off Indicator Always On

Circuit Description
The Traction Off indicator is controlled by the instrument cluster via serial data messages from the electronic brake control module (EBCM). When the EBCM sees the traction control switch input grounded through the momentary traction control switch, it then disables traction control and sends a serial data message to the instrument cluster to turn the Traction Off indicator ON. Each time the ignition is cycled from OFF to ON, the traction control system is enabled.
The following conditions will cause the Traction Off indicator to illuminate:
^ The EBCM has disabled the Traction Control System (TCS) due to a DTC.
^ The driver manually disabling the TCS via the traction control switch.
^ The instrument cluster bulb check. When the ignition switch is turned to ON, the Traction Off indicator will turn ON for approximately 3 seconds and then turn OFF.

Test Description





The numbers below refer to the step numbers on the diagnostic table.
2. Use the scan tool to check the normal state of the Traction Off indicator control.
3. This step ensures that the instrument cluster can operate the Traction Off indicator.