Anti-Lock Brake System
WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 1991 Pontiac Grand Prix, 1991 Oldsmobile Cutlass Supreme, 1991 Chevrolet Lumina, 1991 Buick Regal, and 1990 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
The Delco Moraine Anti-Lock Brake System-III is designed to prevent wheel lockup during heavy braking. This provides improved driver control by reducing the distance required to stop vehicle.
Major component parts of system include the following: anti-lock brake controller, 4 wheel-speed sensors, 2 dash-mounted warning lights, front and rear enable relays and Powermaster-III booster/master cylinder assembly. The Powermaster-III, known as a hydraulic unit on other models, also houses hydraulic accumulator, electric pump motor, solenoids and pressure switch.
Components unique to the anti-lock brake system are covered in a separate article. See ANTI-LOCK BRAKE SYSTEM article in the BRAKES Section.