Home >> Ford >> 2003 >> Explorer 4.0 K, AWD >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC System - Climate Control System >> Diagnosis And Testing >> Climate Control System >> Pinpoint Tests >> Pinpoint Test F: No Communication With The Dual Automatic Temperature Control (DATC) Module >> Possible Causes