Pinpoint Test N: U0155, U0423: Notes
Normal Operation and Fault Conditions
With the ignition ON, the IPC sends messages to the ABS module over the HS-CAN. If the ABS module does not receive these messages within the specified time frame, the ABS module sets DTCs. This can be due to a IPC failure, a circuit failure on the HS-CAN or an excessive load on the network. For information on the messages sent to the ABS module by the IPC, Anti-Lock Control .
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0155 | Lost Communication With Instrument Panel Cluster (IC) Control Module | This DTC sets in continuous memory if the ABS module does not receive any messages from the IPC. |
| U0423 | Invalid Data Received From Instrument Panel Control Module | This DTC sets in continuous memory if any one of the following messages is "invalid" instead of the actual information; hill descent switch status, traction control on-off and trailer sway configuration command. |
Possible Causes
- Network communication concern
- IPC
- ABS module