Pinpoint Test Aa : DTC U0253:00: Notes
Diagnostic Overview
Normal Operation and Fault Conditions
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0253:00 | Lost Communication With Accessory Protocol Interface Module: No Sub Type Information | Set by the ACM and FCDIM when they are missing network messages from the APIM for more than 5 seconds with the ignition in the RUN position. |