Circuit Description

FOUR WHEEL ANTILOCK BRAKE SYSTEM (4WAL)

Battery voltage is supplied to the Brake Indicator through the IGN/GAU 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. Brake Pressure Warning Switch or the Antilock Brake Module.

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

The Brake Pressure Warning 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.