Pinpoint Test AE: Abs (Anti-Lock Brake System) Module Communication Concern With PSCM (Power Steering Control Module): Notes
Refer to MODULE COMMUNICATIONS NETWORK for schematic and connector information.
Normal Operation and Fault Conditions
With the ignition ON, the PSCM sends messages to the ABS module over the FD-CAN. If the ABS module does not receive these messages within the specified time frame, the ABS module sets Diagnostic Trouble Codes (DTCs). This can be due to a PSCM failure, a circuit failure on the CAN or an excessive load on the network. For information on the messages sent to the ABS module by the PSCM, REFER to: Anti-Lock Brake System (ABS) and Stability Control - System Operation and Component Description .
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Condition |
|---|---|---|
| ABS U0131:00 | Lost Communication With Power Steering Control Module "A": No Sub Type Information | Sets if the PSCM messages are missing. |
| ABS U0420:00 | Invalid Data Received from Power Steering Control Module "A": No Sub Type Information | Sets when the ABS module receives invalid steering information from the PSCM. |
Possible Sources
- Wiring, terminals or connectors
- Network communication concern
- PSCM