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 of the front wheel bearing inner seals and is serviced with the wheel bearing.
• 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 of the rear wheel bearing inner seals and is serviced with the wheel.
• Steering Angle Sensor Module (SASM) - vehicles that are equipped with Electronic Power Assist Steering (EPAS), but without the Active Park Assist feature 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 these vehicles, the steering wheel rotation and angle information is sent from the Power Steering Control Module (PSCM). Vehicles with the Active Park Assist feature have a fully functional SASM and  receive steering wheel information from the SASM.
• 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 - depending on vehicle options, the switch is located in the Front Controls Interface Module (FCIM) (and is serviced with the module) or the HVAC module (and is serviced with the module).