Brake Warning System Description

The brake warning indicator is located in the instrument cluster. The brake warning indicator illuminates in order to warn the driver of conditions in the brake system which may result in reduced braking capability. The following conditions will turn on the brake warning indicator:

• The ignition switch is in the Start position. The brake warning indicator illuminates during engine cranking for a bulb check in order to notify the driver that the brake warning circuit is operating properly. The brake indicator receives ignition voltage through the IG fuse. When the ignition switch is in the Start position, a path to ground is provided to the brake indicator through the ignition switch to ground at G200. With power and ground provided, the indicator illuminates.
• The park brake is applied or not fully released. When the parking brake is applied, the switch on the park brake lever closes, sending a ground signal to the Daytime Running Lights (DRL) control module. The DRL control module controls the ground for the brake indicator.
• The brake fluid level is low. If the brake fluid level drops in the master cylinder reservoir, the brake fluid level switch closes, providing a path to G104 for the brake indicator.