Normal Operation and Fault Conditions

WARNING: This page is about a different car, the 2013 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.

The RCM uses information contained in messages from the APIM sent on the HS-CAN.

DTC U0253:00 (Lost Communication With Accessory Protocol Interface Module: No Sub Type Information) - This DTC sets if the RCM does not receive an expected message from the APIM for 6 seconds.