Anti-Lock Control: Abs

WARNING: This page is about a different car, the 2009 Mercury Milan, 2009 Lincoln MKZ, and 2009 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

The ABS consists of the following components:

ABS module
Front wheel speed sensor
Front wheel speed sensor ring (integral to the front axle halfshaft)
Hydraulic control unit (HCU)
Rear wheel speed sensor
Rear wheel speed sensor ring (integral to the wheel bearing)
Stability control sensor cluster
Steering wheel rotation sensor
Stability/traction control switch

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 utilizes the same components as the ABS to prevent wheel spin and help maintain vehicle control during acceleration. The electronic stability control system utilizes the same components as the ABS and the traction control systems. The electronic stability control system also monitors the steering wheel position sensor and the stability control sensor cluster to assist in stabilizing the vehicle during abrupt maneuvers.

The front wheel speed sensor rings are integral to the front hub and bearing assemblies. Refer to FRONT SUSPENSION .

The rear wheel speed sensor rings are integral to the rear hub and bearing assemblies. Refer to FRONT SUSPENSION .