Antilock Brakes / Traction Control Systems: Description and Operation

Anti-Lock Control

Anti-Lock Brake System (ABS)

The ABS consists of the following components:
^ Hydraulic control unit (HCU)
^ ABS module
^ Front wheel speed sensor
^ Front wheel speed sensor ring (part of the front axle halfshaft)
^ Rear wheel speed sensor
^ Rear wheel speed sensor ring (FWD vehicles)
^ Rear wheel speed sensor ring (part of the rear axle halfshaft) (4WD vehicles)
^ Yellow ABS warning indicator
^ Red brake warning indicator
^ Sensor cluster (contains accelerometer) (Escape Hybrid)