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

Normal Operation

Under normal operation, the electronic automatic temperature control (EATC) or dual automatic temperature control (DATC) module receives a ground through circuit GD116 (BK/VT). The DATC/EATC module is supplied constant battery voltage through circuit SBP07 (WH/RD) and ignition switched voltage through circuit CBP20 (YE/VT).