Brake System Indicator
WARNING: This page is about a different car, the 2004 Pontiac Sunfire and 2004 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
The IPC illuminates the brake indicator when any of the following occur:
- The body control module (BCM) detects that the park brake is engaged. The IPC receives a class 2 message from the BCM requesting illumination. If the vehicle is shifted out of park with the park brake engaged, the BCM sends a class 2 message to the radio in order to activate the audible warning.
- The BCM detects a low brake fluid condition. The IPC receives a class 2 message from the BCM requesting illumination.
- The EBCM detects a brake failure condition. The IPC receives a class 2 message from the EBCM requesting illumination.
- The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds.
- The IPC detects a loss of class 2 communications with either the BCM or the EBCM.