Anti-Lock Brake System: Operation: Notes

Each wheel sensor sends an AC electrical signal to the CAB, which translates this information into wheel speed. If wheel speed in any wheel decelerates excessively in comparison to other wheels, the CAB cycles hydraulic brake pressure to each wheel to equalize decelerating speed of all wheels. ABS does not function at speeds less than 5 MPH. Minor wheel lock-up may occur at speeds less than 5 MPH.

Red BRAKE warning light will come on when ignition switch is in START position. Warning light should go off when ignition switch is released to RUN position. If light does not go off, the following conditions may be the cause: parking brake not fully released, low brake fluid, low accumulator pressure or low hydraulic pressure. See DIAGNOSIS & TESTING  .

Amber ANTI-LOCK warning light will come on for 1-30 seconds when ignition switch is turned to ON position, and ABS will perform a self-diagnostic test during this period. If light does not go off after 30 seconds, ABS has found a fault. ABS is deactivated until fault is repaired. Normal braking functions are unaffected. Proceed to DIAGNOSIS & TESTING  to locate and correct fault.