Brake Warning System Description and Operation

Brake Warning System Description and Operation

Brake Warning Indicator

The instrument panel cluster (IPC) illuminates the brake warning indicator when one or more of the following occurs.

* The body control module (BCM) detects that the park brake is engaged.
* The BCM detects a low brake fluid condition. The IPC receives a serial data message from the BCM requesting illumination.
* The electronic brake control module (EBCM) detects a malfunction and disables the antilock brake system (ABS). The IPC receives a serial data message from the EBCM requesting illumination.
* The IPC performs the bulb check at the start of each ignition cycle. The brake warning indicator illuminates for briefly 3 seconds turning OFF.
* The IPC detects a loss of communications with the EBCM.