Circuit Description

The Traction Off indicator is controlled by the instrument panel cluster (IPC) 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 TCS due to a DTC.
• The driver manually disabling the Traction Control System (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.