Normal Operation
WARNING: This page is about a different car, the 2010 Lincoln MKX and 2010 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
- DTC U0100 (Lost Communication With ECM /PCM) - an on-demand DTC that sets when the Headlamp Control Module (HCM) does not receive communication from the PCM.
This pinpoint test is intended to diagnose the following:
- HCM
- PCM