Intake Air Temperature (IAT) Sensor

Intake air temperature sensor measures intake manifold air temperature. The IAT sensor resistance changes with respect to temperature. High air temperature decreases IAT sensor resistance; low air temperature increases IAT sensor resistance. A reference voltage, supplied and monitored by ECM, is modified by sensor resistance. The ECM uses this information to control output signals to the fuel injectors.

On Storm models, IAT sensor is used to control spark timing and delay EGR operation when engine is cold. See INTAKE AIR TEMPERATURE SENSOR (IAT) LOCATION table.