Normal Operation and Fault Conditions

On vehicles not equipped with active park assist, the PSCM calculates steering wheel rotation speed, angle and direction of rotation and sends the information to the ABS module over the HS-CAN2. A failure of the HS-CAN2, the PSCM or the internal sensors causes the ABS module to set one or more DTCs.

On vehicles equipped with active park assist, the steering wheel rotation sensor sends steering wheel rotation speed, angle and direction of rotation to the SCCM. The SCCM then sends this information to the ABS module over the HS-CAN2. A failure of the HS-CAN2, the SCCM or the internal steering wheel rotation sensor causes the ABS module to set one or more DTCs.

DTC DESCRIPTION

DTC	Description	Fault Trigger Conditions
C0051:62	Steering Wheel Position Sensor: Signal Compare Failure	Sets when the ABS module detects the difference between the steering wheel angle signal and the calculated reference signal is too high.
C0051:64	Steering Wheel Position Sensor: Signal Plausibility Failure	Sets when the ABS module detects the difference between the steering wheel angle signal and the calculated reference signal is too high or if the steering wheel angle sensor does not match other stability control sensor inputs (yaw rate, lateral acceleration, longitudinal acceleration, roll rate).
C0051:67	Steering Wheel Position Sensor: Signal Incorrect After Event	Sets when the ABS module detects the center position of the steering wheel cannot be determined after 30 seconds of driving at a speed between 12 km/h (7 mph) and 50 km/h (31 mph).
C0051:85	Steering Wheel Position Sensor: Signal Above Allowable Range	Sets when the ABS module detects the absolute value of the calculated steering wheel angle is greater than a predetermined threshold.