What is an ABS Control Module? The ABS control module, also known as the ABS controller or ABS pump, is a computerized control unit that manages the operation of the ABS system. It is typically located in the engine compartment or near the ABS hydraulic unit. The ABS control module constantly monitors the speed of each wheel using wheel speed sensors. When it detects a wheel locking up during braking, it activates the ABS system to modulate brake pressure and prevent wheel lock. It is essent...