Anti Lock Brake System
WARNING: This page is about a different car, the 1994 Mercury Grand Marquis, 1994 Lincoln Town Car, and 1994 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
ECU receives a wheel speed signal from each wheel sensor. When wheel lock-up is about to occur, the ECU activates solenoid valves to modulate hydraulic pressure to each wheel. A pump/motor assembly provides constant hydraulic pressure to the system. The ABS incorporates self-diagnostic capabilities.