Intake Air Temperature Sensor
WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 2002 Mercury Grand Marquis, 2002 Lincoln Town Car, 2002 Ford Crown Victoria, 2001 Mercury Mountaineer, and 2001 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.
The Intake Air Temperature (IAT) sensor is installed in air cleaner inlet tube and is used to help determine Electronic Pressure Control (EPC) pressure.