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Home >> Ford >> 2005 >> Excursion 6.0 P, RWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Pinpoint Tests - 6.0L Diesel (99P F450/550) >> Pinpoint Test G: Intake Air Temperature 2 (IAT2) Sensor >> Introduction >> Circuit Functions

Circuit Functions

The IAT2 sensor is a thermistor-type sensor with a variable resistance that is inversely proportional to temperature changes. When interfaced with the powertrain control module (PCM), it produces a 0-5 volt analog signal that measures temperature.

The primary function of the IAT2 sensor is to provide a feedback signal to the PCM indicating the manifold air temperature.

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