Anti-Lock Brake System (ABS)

WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.

The ABS consists of the following components:

Hydraulic control unit (HCU)
ABS module
Rear wheel speed sensor
Rear wheel speed sensor ring
Front wheel speed sensors
Front wheel speed sensor rings
Stoplamp switch
Traction control switch (TCS) (PCM controlled)

The ABS prevents wheel lock-up by monitoring the wheel speed sensors and actuating the valves in the HCU which modulates the brake pressure to the brake calipers. By preventing the wheels from locking up, the driver is able to maintain steering control and stop in the shortest possible distance under most conditions. The traction control system is controlled by the PCM and utilizes the ABS module for wheel speed information only. Engine only traction control (EOTC) helps maintain vehicle control during acceleration by modulating engine torque when driving on slippery or loose surfaces.

The front wheel speed sensor rings are integral to the front hub and bearing assemblies. Refer to FRONT SUSPENSION - REAR WHEEL DRIVE (RWD) article for rear wheel drive (RWD) or FRONT SUSPENSION - FOUR WHEEL DRIVE (4WD) article for four wheel drive (4WD).

The rear wheel speed sensor ring is integral to the rear axle. Refer to REAR DRIVE AXLE/DIFFERENTIAL - FORD 8.8-INCH RING GEAR article, REAR DRIVE AXLE/DIFFERENTIAL - FORD 9.75-INCH RING GEAR article or REAR DRIVE AXLE/DIFFERENTIAL - FORD 10.25-INCH RING GEAR article.