Pinpoint Test M: DTC (Diagnostic Trouble Code) U0253:00: Notes
Refer to MODULE COMMUNICATIONS NETWORK for schematic and connector information.
Normal Operation and Fault Conditions
The PAM communicates with the APIM through the HS-CAN1, HS-CAN3 and GWM.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0253:00 | Lost Communication With Accessory Protocol Interface Module: No Sub Type Information | A continuous memory DTC that sets in the PAM if messages received from the APIM are missing for 5 seconds or more. |
Possible Sources
- Communication network concern
- GWM concern
- APIM
- PAM (integral to the BCM)