Milan FWD L4-2.3L (2008)
fuel, spark, and air flow.
The IAT sensor provides a quicker temperature change response time than the ECT or CHT sensor.
Currently there are 2 design types of IAT sensors used, a stand-alone/non-integrated type and a integrated type. Both types function the same, however
the integrated type is incorporated into the mass air flow (MAF) sensor instead of being a stand alone sensor.
Supercharged vehicles use 2 IAT sensors. Both sensors are thermistor type devices and operate as described above. One is located before the
supercharger at the air cleaner for standard OBD/cold weather input, while a second sensor (IAT2) is located after the supercharger in the intake
manifold. The IAT2 sensor located after the supercharger provides air temperature information to the PCM to control spark and to help determine
charge air cooler (CAC) efficiency.
Mass Air Flow (MAF) Sensor
Diagram Of Air Flow Through Throttle Body Contacting MAF Sensor Hot And Cold Wire (and IAT Sensor Wire Where Applicable) Terminals
Typical Mass Air Flow (MAF) Sensor
