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Home >> Ford >> 2003 >> Excursion 5.4 L, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1088 (HVAC Control System - General Information) >> Diagnosis And Testing >> Climate Control System >> Pinpoint Test F: No Communication With The Dual Automatic Temperature Control (DATC) Module >> Normal Operation
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Normal Operation

WARNING: This page is about a different car, the 2005 Mercury Mountaineer and 2005 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.

Under normal operation, the DATC module receives a ground through circuit 1203 (BK/LB). The DATC module is supplied constant battery voltage through circuit 729 (RD/WH) and ignition switched voltage through circuit 1050 (LG/VT).