Anti-Lock Brake System - Without Traction Control: Description

Anti-Lock Brake System (ABS) controls brake fluid pressures to each individual front and rear brake caliper during a panic stop to prevent wheel lock-up. System consists of actuator, solenoid relay, pump motor relay, Electronic Control Unit (ECU), and a speed sensor at each wheel. See Fig 1. If a system fault occurs, the ECU stores a self-diagnostic code(s) that can be retrieved to diagnose malfunction.

Fig 1: Locating ABS Components

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