Anti-Lock Brake System

The 4-wheel Anti-Lock Brake System (4WABS) prevents wheel lockup by automatically modulating the brake pressure during an emergency stop. By not locking the wheels, the driver can improve steering control during hard braking and stop the vehicle in the shortest possible distance under most conditions. The anti-lock brake system may be either 3-channel or 4-channel 4WABS. For ABS diagnostics and repair, see appropriate ANTI-LOCK article.