Home >> Ford >> 2006 >> Freestyle SEL, AWD >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC Control System - General Information & Diagnostics >> Diagnosis And Testing >> Climate Control System >> Pinpoint Tests >> Pinpoint Test F: No Communication With the Electronic Automatic Temperature Control (EATC) Module >> Possible Causes