Anti-Lock Brake Control Module
WARNING: This page is about a different car, the 2004 Mercury Marauder, 2004 Mercury Grand Marquis, and 2004 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
The anti-lock brake control module is mounted to the hydraulic control unit.
It is an on-board diagnostic, replaceable unit consisting of two microprocessors and the necessary circuitry for their operation. The anti-lock brake control module monitors system operation during normal driving as well as during anti-lock braking and traction control cycling, if equipped.
Anti-lock brake control module operation is as follows:
- Under normal driving conditions, the microprocessor produces short test pulses to the solenoid valves that check the electrical system without any mechanical reaction.
- Impending wheel lock conditions trigger signals from the anti-lock brake control module that open and close the appropriate solenoid valves. This results in moderate pulsations in the brake pedal.
- During normal braking, the brake pedal feel will be identical to a standard brake system.
- Most faults which occur to the anti-lock brake and the traction control systems will be stored as a diagnostic trouble code (DTC) in the keep-alive memory of the anti-lock brake control module. The DTCs can be retrieved by following the on-board diagnostic procedures.