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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 579 (Climate Control System - General Information And Diagnostics) >> Description And Operation >> Climate Control System >> Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) - System Operation and Component Description >> Component Description >> Ambient Air Temperature (AAT) Sensor

Ambient Air Temperature (AAT) Sensor

WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

The AAT sensor is an input to the PCM. If the outside air temperature is below approximately 0 °C (32 °F), the PCM does not allow the A/C compressor clutch to engage.

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