Intake Air Temperature (IAT) Sensor

On TBI, IAT sensor is located on side of intake manifold. On MFI, IAT sensor is located on side of air cleaner.

On all models, air temperature sensor thermistor changes resistance with respect to temperature. High temperature causes low resistance. Low temperature causes high resistance. A reference voltage (supplied and monitored by ECM) is modified by sensor resistance. ECM uses this information to help determine control (output) signals to injector.