Braking Warning Lamp

SYSTEM OPERATION
The brake warning lamp gives an indication when the parking brake is applied, or when the pressures in the two halves of the split brake hydraulic system are unequal. The lamp is turned on when the ignition switch is in the Start position as a bulb test. After the bulb test, the lamp is controlled by hard-wired inputs from the parking brake switch and/or the brake warning switch.

The brake warning switch closes to ground when it senses unequal hydraulic pressures in the two halves of the split brake hydraulic system, possibly due to low brake fluid level or brake fluid leakage. The parking brake switch closes to ground when the parking brake is applied. Refer to Brakes and Traction Control/Brakes for more information.