ABS With Traction Control and AdvanceTrac®: Notes

The ABS with traction control and AdvanceTrac® 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 in each wheel bearing and wheel hub assembly and is serviced with the wheel bearing and wheel hub.
• HCU- which contains several valves (inlet, outlet, isolation and dump), the hydraulic pump motor and is mounted behind the battery and battery tray. The HCU is available only with a new ABS module.
• Rear wheel speed sensors - one sensor is located in each rear wheel knuckle, the sensors are serviced separately from the knuckle.
• Rear wheel speed sensor tone rings - one tone ring is located in each wheel bearing and wheel hub assembly and is serviced with the wheel bearing and wheel hub.
• Restraints Control Module (RCM) - located under the rear of the front floor console and contains the yaw rate and lateral accelerometers.
• Steering Angle Sensor Module (SASM) - vehicles that are equipped with Electronic Power Assist Steering (EPAS) have a SASM which does not have any electrical components inside. It is only installed to provide structural support for the clockspring and for turn signal canceling. On those vehicles, the steering wheel rotation sensor is located in the EPAS steering gear and is serviced with the gear.
• Steering wheel rotation sensor, vehicles with Hydraulic Power Assist Steering (HPAS) only - located on the RH side of the clockspring and is serviced separately from the clockspring assembly.
• Steering wheel rotation sensor ring, vehicles with HPAS only - located on the clockspring and is serviced with the clockspring assembly.
• Stability/traction control switch - located in the instrument panel center finish panel and is serviced separately from the finish panel.