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Home >> Lincoln >> 2009 >> MKX FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1112 (Exterior Lighting System) >> Diagnostic Tests >> Adaptive Head Lighting >> Pinpoint Tests >> Pinpoint Test AB: DTC U0100 - Lost Communication With ECM/PCM >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

The headlamp control module (HCM) receives vehicle speed information from the PCM. If the HCM does not receive communication from the PCM, DTC U0100 is set.

This pinpoint test is intended to diagnose the following:

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