Abs System

As vehicle is driven, control module monitors wheel speeds by computing their acceleration and deceleration. During braking, signal from brake light puts control module into standby mode. If any wheels start to lock, control module activates hydraulic modulator which adjusts hydraulic pressure.

Control module also receives a brake pedal position signal from pedal sensor (in master cylinder) during braking. This information is used to control hydraulic modulator so it does not affect brake pedal position. See Figure .