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 the Anti-Lock Brake System (ABS) and Stability Control article.
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 when the ABS module does not recieve any messages from the PSCM. This can be due to a PSCM failure, a circuit failure on the HS-CAN or an excessive load on the network. |
| U0420:00 | Invalid Data Received From Body Control Module: No Sub Type Information | This DTC sets if the ABS module receives invalid steering wheel torque information. This can be due to a PSCM failure, a circuit failure on the HS-CAN or an excessive load on the network. |
| U0420:41 | Invalid Data Received From Body Control Module: General Checksum Failure | This DTC sets if the steering wheel angle sensor checksum is invalid. This can be due to a PSCM failure, a circuit failure on the HS-CAN or an excessive load on the network. |
| U0420:82 | Invalid Data Received From Body Control Module: Alive/Sequence Counter Incorrect/Not Updated | This DTC sets if the steering wheel angle sensor rolling counter message is out of range. This can be due to a PSCM failure, a circuit failure on the HS-CAN or an excessive load on the network. |
| U0420:86 | Invalid Data Received From Body Control Module: Signal Invalid | This DTC sets if the information in the steering wheel angle sensor message is out of range or invalid. This can be due to a PSCM failure, a circuit failure on the HS-CAN or an excessive load on the network. |