Normal and Anti-Lock Braking

Under normal braking conditions, the ABS System functions much the same as a standard brake system with a diagonally split master cylinder. The primary difference is that power assist is provided by hydraulic power assist instead of the conventional vacuum assist.

If a wheel locking tendency is noticed during a brake application, the system will enter Anti-Lock mode. During Anti-Lock braking, hydraulic pressure in the four wheel circuits is modulated to prevent any wheel from locking. Each wheel is designed with a set of electrical valves and hydraulic line to provide modulation, although for vehicle stability, both rear wheel valves receive the same electrical signal. The system can build, hold or reduce pressure at each wheel, depending on the signals generated by the wheel speed sensors (WSS) at each wheel and received at the Controller-Anti -Lock Brake (CAB).