Operation CHARM: Car repair manuals for everyone.

Brake Indicator

The red BRAKE indicator illuminates when Ignition 1 is active and the park brake is engaged. The Body Control Module (BCM) transmits a Class 2 serial data message to the instrument cluster indicating the park brake status. Also, the BRAKE indicator illuminates when the Electronic Brake Control Module (EBCM) detects a brake fail condition. The instrument cluster commands the BRAKE indicator ON. The BRAKE Indicator turns OFF under the following conditions:

The brake fail indicator command Class 2 serial data message from the EBCM is disabled The Class 2 BCM park brake message is disengaged

If the EBCM commands the BRAKE indicator to illuminate, the cruise function is canceled. In the event of an EBCM Class 2 serial data loss, the BRAKE indicator illuminates. In the event of a BCM Class 2 serial data loss, the park brake status and the indicator remain in their last states.