Brake Warning Indicator: Description and Operation

Battery voltage is supplied to the Brake Indicator through the GAGES Fuse and the PNK/BLK (39) wire when the Ignition Switch is in RUN or START. Ground is provided through the TAN/WHT (33) wire by the Park Brake Warning Switch or the Brake Pressure Warning Lamp Switch.

The Park Brake Warning Switch closes when the Parking Brake is applied. The Brake Indicator lights to alert the driver.

The Brake Pressure Warning Lamp Switch closes to light the Brake Indicator when there is low brake fluid pressure in one of the two hydraulic brake systems. This could be caused by a leak in one of the brake lines. This can only be accomplished after the system has been repaired.

The Four-Wheel Anti lock Brake Module grounds the Brake Indicator when the module senses certain malfunctions in the hydraulic portion of the system. The Four-Wheel Antilock Brake Module grounds the Anti lock Indicator when the module senses a malfunction in the electrical or electronic portion of the system. Brake voltage input is supplied to the Module through the Stoplamp Switch whenever the brakes are applied.