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Enhanced Traction Control-TRAC OFF Indicator
The
Electronic Brake Control Module (EBCM) receives a Class 2 serial data message from the
Body Control Module (BCM) indicating a traction switch activation. The EBCM determines the state of the TRAC OFF indicator and sends a Class 2 serial data message to the instrument cluster commanding the indicator state. The traction control switch is a momentary switch input into the BCM, which detects the switch activation and sends the Class 2 serial data message. If an EBCM Class 2 failure occurs, the TRAC OFF indicator will not illuminate unless the indicator was illuminated prior to the Class 2 failure.