Normal Operation
WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
- DTC U0164 (Lost Communication With HVAC Control Module [(EATC ]) - sets if data messages received from the HVAC module over the Medium Speed Controller Area Network (MS-CAN) are missing. For a complete list of all network messages, refer to MODULE COMMUNICATIONS NETWORK .
This pinpoint test is intended to diagnose the following:
- HVAC module
- IC