ABS With Traction Control, Electronic Stability Control (ESC) and Roll Stability Control (RSC®): Notes

The ABS with traction control, Electronic Stability Control (ESC) and Roll Stability Control (RSC®) 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 and outlet), the hydraulic pump motor and is mounted behind the battery and battery tray.
• 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.
• Stability control sensors - located inside of the Restraints Control Module (RCM) and consists of the following sensors: yaw rate, roll rate, lateral accelerometer and longitudinal accelerometer. The sensors are integral to the RCM and cannot be serviced separately.
• 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 (an input for Roll Stability Control (RSC®), Trailer Sway Control and Active Park Assist functions) is sent from the Power Steering Control Module (PSCM). Vehicles with the Active Park Assist feature have a fully functional SASM and  also receive steering wheel information from the PSCM.
• 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. The sensor provides steering rotation information to facilitate RSC® and Trailer Sway Control functions.
• Steering wheel rotation sensor ring, vehicles with HPAS only - located on the clockspring and is serviced with the clockspring assembly.
• Traction control switch - located in the Front Controls Interface Module (FCIM) and is serviced with the FCIM.