Pinpoint Test P: Stability Control Sensor Signal Faults: Notes
Refer to Module Communications Network for schematic and connector information.
Normal Operation and Fault Conditions
The ABS module receives vehicle yaw rate, lateral acceleration, longitudinal acceleration and roll rate from RCM over the HS-CAN2. The yaw rate sensor, lateral accelerometer and longitudinal accelerometer are contained in the RCM. A failure of the HS-CAN2, an incorrectly installed RCM, an internal failure of the RCM 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 |
|---|---|---|
| C0061:22 C0062:22 C0063:22 |
Lateral Acceleration Sensor: Signal Amplitude > Maximum Longitudinal Acceleration Sensor: Signal Amplitude > Maximum Yaw Rate Sensor: Signal Amplitude > Maximum |
This DTC sets if the absolute value of the yaw rate, lateral acceleration or longitudinal acceleration message from the RCM is outside of the maximum allowable range. |
| C0061:28 C0062:28 C0063:28 |
Lateral Acceleration Sensor: Signal Bias Level Out of Range / Zero Adjustment Failure Longitudinal Acceleration Sensor: Signal Bias Level Out of Range / Zero Adjustment Failure Yaw Rate Sensor: Signal Bias Level Out of Range / Zero Adjustment Failure |
This DTC sets if the difference between the measured yaw rate and the calculated yaw rate is greater than a predetermined limit or if the learned lateral acceleration sensor offset or learned longitudinal acceleration sensor offset exceeds the programmed limits. |
| C0061:64 C0062:64 C0063:64 |
Lateral Acceleration Sensor: Signal Plausibility Failure Longitudinal Acceleration Sensor: Signal Plausibility Failure Yaw Rate Sensor: Signal Plausibility Failure |
This DTC sets if the yaw rate, lateral acceleration or longitudinal acceleration does not match other sensor input or calculated values. |
| C0062:02 | Longitudinal Acceleration Sensor: General Signal Failure | This DTC sets if the ABS module calibration of the longitudinal acceleration sensor is incomplete or not completed correctly. |
| C0062:2A | Longitudinal Acceleration Sensor: Signal Stuck In Range | This DTC is set in the ABS module if, during each drive-off acceleration, the measured longitudinal acceleration signal value sent from the RCM does not change as expected when compared to the 'calculated reference longitudinal acceleration signal value. |
| C0062:67 | Longitudinal Acceleration Sensor: Signal Incorrect After Event | This DTC only sets when the ABS module does not complete a successful IVD Initialization routine. The ABS module longitudinal acceleration sensor input (LONG_ACCL) PID can be used to read the sensor value. The longitudinal acceleration sensor signal value from the RCM during standstill calibration on a level surface should be less than 2 m/s. |
| C0063:27 | Yaw Rate Sensor: Signal Rate of Change Above Threshold | This DTC sets if the yaw rate signal gradient received from the RCM is greater than 500 degrees per second. |
| C0063:29 | Yaw Rate Sensor: Signal Invalid | This DTC sets if the yaw rate signal does not match other sensor signal inputs and messages. |
| C0063:62 | Yaw Rate Sensor: Signal Compare Failure | This DTC sets if the difference between the yaw rate received from the RCM and the calculated reference yaw rate exceeds a predetermined threshold. |
Possible Causes
- Underinflated tires
- Incorrect or mismatched tires
- Network communication concern
- Incorrect or incomplete ABS module Interactive Vehicle Dynamics (IVD) Initialization
- Incorrectly installed RCM
- RCM