Anti-Lock W/Traction Control: Description

Anti-Lock Brake System (ABS) controls fluid pressures to each individual front brake caliper and rear brake calipers during a panic stop to prevent wheel lock-up. System consists of actuator, solenoid relay, pump motor relay, ABS/Traction Control Electronic Control Unit (ABS/TRAC ECU), and a speed sensor at each wheel. See Fig 1. If a system fault occurs, the ABS/TRAC ECU stores a self-diagnostic code(s) that can be retrieved to diagnose malfunction. TRAC system is integrated with the ABS. TRAC helps avoid slippage of driving wheels during acceleration. System maintains optimal driving control during changing road surface conditions upon acceleration.

Fig 1: Locating ABS Components

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