Electronic Brake Control Module: Description and Operation

The Anti-lock Brake System (ABS) is controlled by the anti-lock brake control module which is located behind the instrument panel lower center panel. It receives wheel speed readings from each brake anti-lock sensor and uses the information to compare wheel speeds.

By continuously monitoring and comparing the rotational speed of each wheel, the anti-lock brake control module activates the ABS only when it senses wheel lockup under severe braking conditions. The anti-lock brake control module decides which wheel needs to be controlled and sends the appropriate signals to the hydraulic anti-lock actuator assembly.

The anti-lock brake control module has self-diagnostic capabilities and stores diagnostic trouble codes in its memory. If a trouble code is present in the anti-lock brake control module memory, the instrument cluster anti-lock brake warning indicator will illuminate when the engine is running.