* Consult your owner's manual: This is the best source for identifying sensors on your specific vehicle.
* Look up a diagram: Find a wiring diagram or parts diagram specific to your year and engine type online. Many sites offer free diagrams.
* Visually inspect the sensor: The IAT sensor is usually a small, cylindrical sensor with a single wire connection. If there's another sensor, its location and connector should help you identify it.
The IAT sensor is much more common in that location than any other sensor.