Intake Air Temperature (IAT) Sensor
WARNING: This page is about a different car, the 2004 Ford Pickup, 2004 Ford F550 Super Duty, 2004 Ford F450 Super Duty, 2004 Ford Excursion, and 2004 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
The IAT sensor is installed in the air cleaner outlet tube. The IAT sensor is used in determining electronic pressure control (EPC) pressures.