Pinpoint Test T : U0257: Notes
Refer to Audio System/Navigation for schematic and connector information.
Normal Operation and Fault Conditions
The PAM uses the BCM and the IPC as a gateway modules to communicate with the FCDIM. The PAM communicates over the HS-CAN with the BCM. The BCM communicates over the MS-CAN with the IPC and the IPC communicates over the I-CAN with the FCDIM.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0257 | Lost Communication With Front Controls / Display Interface Module: No Subtype Information | A CMDTC that sets when the PAM is unable to communicate with the FCDIM for 0.5 seconds or more after the active park assist system has been activated. |
Possible Sources
- Communication concern
- FCDIM
- PAM