• The Intake Air Temperature1 (IAT1) sensor is a two wire thermistor sensor that is located inside the Mass Air Flow (MAF) sensor.
• The IAT1 sensor’s internal thermistor forms a voltage divider with a pullup resistor inside the ECM.
• The IAT1 sensor’s primary function is to measure intake air temperature to aid in controlling EVTG and the glow plug system.
• The MAF/IAT1 sensor is mounted in the intake air piping after the air filter.
