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Intake Air Temperature (IAT) Sensor

IAT sensor inputs air temperature to the PCM. The IAT sensor changes resistance in response to air temperature. The IAT sensor resistance decreases as air temperature increases. For IAT sensor location, see IAT SENSOR LOCATIONS  table.

IAT SENSOR LOCATIONS

Application Location
B2500, B3000 & B4000 In Air Intake Assembly
Miata In Air Filter Housing
Millenia
2.3L (1)
2.5L In Air Filter Housing
MPV In Mass Airflow Sensor
Protege
1.6L In Air Filter Housing
1.8L In Mass Airflow Sensor
626
2.0L In Air Filter Housing
2.5L In Volume Airflow Sensor
(1) Millenia 2.3L is equipped with 3 IAT sensors. One IAT sensor is located in air filter housing, another sensor is located in dynamic chamber at right rear or engine and remaining IAT sensor is located in Lysholm compressor on top right of engine.
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