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Home >> Ford >> 2014 >> Focus S, Standard Trans, Gas >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC - Climate Control System - General Information -- (Except Electric) >> Description And Operation >> Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) - System Operation and Component Description >> Component Description >> Ambient Air Temperature Sensor
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Ambient Air Temperature Sensor

The Ambient Air Temperature (AAT) sensor is an input to the PCM  . If the temperature is below a predetermined value, the PCM  does not allow the A/C clutch to engage.