Normal Operation and Fault Conditions
With the ignition ON, the PSCM sends messages to the ABS module over the HS-CAN2. If the ABS module does not receive these messages within a certain time frame, the ABS module sets a DTC. For information on the messages sent to the ABS module by the PSCM, refer to the Network Message Chart in Description and Operation in Anti-Lock Brake System (ABS) and Stability Control Anti-Lock Brake System (ABS) and Stability Control.
PPT AE ABS MODULE DTC FAULT TRIGGER CONDITIONS
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0131:00 | Lost Communication With Power Steering Control Module: No Sub Type Information | This DTC sets if the ABS module does not receive any of the expected messages from the PSCM. |
| U0420:41 | Invalid Data Received From Power Steering Control Module: General Checksum Failure | This DTC sets if the information in the steering wheel angle checksum is invalid. |
| U0420:82 | Invalid Data Received From Power Steering Control Module: Alive/Sequence Counter Incorrect/Not Updated | This DTC sets if the information in the steering wheel data message from the PSCM does not change for a predetermined amount of time. This DTC clears automatically in the same ignition cycle it was set once valid data has been received. |
| U0420:86 | Invalid Data Received From Power Steering Control Module: Signal Invalid | This DTC sets if the information in the steering wheel angle sensor message contains invalid or out of range data. |