Anti-Lock Brake System - Rear Wheel: Description

Rear Wheel Anti-Lock (RWAL) brake system is designed to control braking force of rear wheels in 2WD mode only. This serves to eliminate wheel lock-up and maintain directional stability during hard brake application. System consists of a wheel speed sensor (mounted in rear differential), pressure limit valve, RWAL Electronic Control Module (ECM) and connecting wiring harness.

Power is supplied to RWAL ECM through RWAL power relay. System also contains a self-diagnostic function, which enables technician to quickly trouble shoot system by monitoring stored RWAL trouble codes through flashes of the BRAKE warning light.