Intake Air Temperature Sensor: Description
WARNING: This page is about a different car, the 2004 Dodge Sprinter. However, it is still accessible from the selected car via links, so may be relevant.
The intake air temperature sensor is located between the charge air pipe and the charge air distribution of the cylinders. The intake air temperature sensor measures the temperature of the air as it is supplied to the cylinders and transmits the value to the ECM. This is required in order to determine the density of the air being supplied for the combustion process. The value range is from minus 40°F up to 302°F (minus 40°C to 150°C).