• The IAT2 sensor is a two (2) wire thermistor type sensor.
• The IAT2 sensor changes resistance when exposed to different air temperature.
• The primary function of the IAT2 sensor is to provide a feedback signal to the ECM indicating manifold air temperature.
• The IAT2 sensor’s internal thermistor forms a voltage divider with a pullup resistor inside the ECM.
• The ECM monitors the IAT2 signal to control temperature by adjusting other devices.
