Antilock Brakes / Traction Control Systems: Description and Operation

Anti-Lock Control

Anti-Lock Brake System (ABS) with Roll Stability Control (RSC) and Traction Assist
The anti-lock brake system (ABS) with roll stability control (RSC) and traction assist consists of these components:
^ Hydraulic control unit (HCU)
^ ABS module (also controls the RSC system and traction assist system)
^ Stability/traction control switch
^ Steering wheel rotation sensor
^ Stability control sensor cluster (contains the accelerometer[s], roll rate sensor and yaw rate sensor)
^ Front wheel speed sensors
^ Front wheel speed sensor tone rings (integral to the halfshafts)
^ Rear wheel speed sensors
^ Rear wheel speed sensor tone rings (integral to the halfshafts)
^ Brake pressure transducer (integral to the HCU)
^ Brake fluid level switch
^ Red brake warning indicator
^ Yellow ABS warning indicator
^ Traction assist/roll stability control indicator ("sliding car" indicator)

The front wheel speed sensor tone rings are integral to the front halfshafts.

The rear wheel speed sensor tone rings are integral to the rear halfshafts.