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 U0100 (Lost Communication With ECM /PCM) - sets in continuous memory in the IC if data messages received from the PCM over the High Speed Controller Area Network (HS-CAN) are missing. For a complete list of all network messages, refer to MODULE COMMUNICATIONS NETWORK .

NOTE: Once the IC sets DTC U0100, multiple gauges or indicators are likely to be inoperative in the IC . Other modules that require data from the IC all set communication DTCs and may also exhibit system function concerns.

This pinpoint test is intended to diagnose the following: