Brake

The brake warning indicator, in the instrument cluster, is operated by the Electronic Brake Control Module (EBCM) and the Body Control Module (BCM). It indicates a low fluid pressure condition exists in the brake system when the brake warning indicator finds ground through the pressure differential switch in the combination valve. It also indicates the park brake is applied when the brake warning indicator finds ground through the park brake switch. When the park brake is set with the ignition switch in the RUN position, the park brake indicator will flash. The BCM will command the indicator ON in order to indicate that the park brake is engaged. The EBCM will command the Brake indicator ON in order to indicate a low fluid pressure condition.