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 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 lamps (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. |
