Pinpoint Test J : Steering Wheel Position Sensor Signal Faults: Notes
Normal Operation and Fault Conditions
The PSCM monitors 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, PSCM or the internal sensors causes the ABS to set one or more Diagnostic Trouble Codes (DTCs).
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| C0051:62 | Steering Wheel Position Sensor: Signal Compare Failure | This DTC sets in continuous memory and on-demand if 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 | This DTC sets in continuous memory and on-demand if 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 | This DTC sets in continuous memory and on-demand if 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 | This DTC sets in continuous memory and on-demand if the absolute value of the calculated steering wheel angle is greater than a predetermined threshold. |
Possible Causes
- Incorrectly mounted RCM
- Network communication concern
- Incomplete or incorrect stability control sensor calibration
- Wheels and tires
- Front suspension components
- Steering system components
- PSCM