Antilock Brakes / Traction Control Systems: Description and Operation: Description and Operation

Anti-Lock Control-4-Wheel

The Four-Wheel Anti-Lock Brake System (4WABS) consists of the following components:
^ Anti-Lock Brake System (ABS) module
^ Hydraulic Control Unit (HCU) (serviced separately from the ABS module)
^ front wheel speed sensor
^ front wheel speed sensor ring
^ rear wheel speed sensor
^ rear wheel speed sensor ring