ABS With Traction Control and Electronic Stability Control (ESC): Notes

The ABS with traction control and Electronic Stability Control (ESC) consists of the following components:

• ABS module - attached to the Hydraulic Control Unit (HCU), but can be serviced separately.
• Front wheel speed sensors - one sensor is located in each front wheel knuckle. The sensors are serviced separately from the knuckle.
• Front wheel speed sensor tone rings - one tone ring is located on each front wheel hub and is serviceable separate from the wheel hub.
• HCU - which contains several valves (inlet, outlet, isolation and dump) and the hydraulic pump motor. It is mounted in the LF corner of the engine compartment.
• Rear wheel speed sensors - one sensor is located on each end of the rear axle housing. The sensors are serviced separately from the axle housing.
• Rear wheel speed sensor tone rings - one tone ring is located on each axle shaft and is serviceable separate from the axle shaft.
• Restraints Control Module (RCM) - located under the rear of the front floor console and contains several sensors (yaw rate, lateral accelerometer and longitudinal accelerometer).
• Steering wheel rotation sensor - located on the RH side of the clockspring and is serviced separately from the clockspring assembly.
• Stability/traction control switch - located in the floor console finish panel and is serviced separately from the finish panel.