Section 35 (Brakes - Abs): Brakes-Abs: Description: Description
The anti-lock brake system (ABS) is an electronically operated, all wheel brake control system.
The system is designed to prevent wheel lockup and maintain steering control during periods of high wheel slip when braking. Preventing lockup is accomplished by modulating fluid pressure to the wheel brake units.
The hydraulic system is a three channel design. The front wheel brakes are controlled individually and the rear wheel brakes in tandem (Fig 1 ). The ABS electrical system is separate from other electrical circuits in the vehicle. A specially programmed controller anti-lock brake unit operates the system components.
ABS system major components include:
- Controller Anti-lock Brakes (CAB)
- Hydraulic Control Unit (HCU)
- Wheel Speed Sensors (WSS)
- ABS Warning Light
Rear Wheel Anti-lock (RWAL) brake system is standard equipment. The RWAL brake system is designed to prevent rear wheel lock-up under heavy braking conditions on virtually all types of road surfaces. RWAL braking is desirable because a vehicle which is stopped without locking the wheels will retain directional stability. This allows the driver to retain greater control of the vehicle during braking.
The RWAL components include:
- RWAL Valve
- Controller Anti-lock brake (CAB)
- Rear Wheel Speed Sensor (WSS)