Anti-Lock Brake System: Description

The Anti-Lock Brake System (ABS) control module senses reductions in rear wheel speed and modulates hydraulic pressure to the brakes to prevent rear wheel lock-up. The ABS consists of a hydraulic unit, speed sensor, sensor rotor, pressure differential switch, ABS relay, short connector and ABS control module. See Fig 1. An ABS warning light is located on the instrument cluster.

Fig 1: Locating Rear Wheel ABS Components

Courtesy of MAZDA MOTORS CORP.