Intake Air Temperature Sensor
WARNING: This page is about a different car, the 1993 Mercedes-Benz 300E. However, it is still accessible from the selected car via links, so may be relevant.
Intake air temperature sensor reads intake air temperature and converts temperature reading to a voltage signal. Intake air temperature sensor is a Negative Temperature Coefficient (NTC) type sensor. As sensor temperature increases, resistance decreases. The engine control module uses intake air temperature to control fuel injection during warm-up enrichment, adjusting ignition timing to compensate for intake air temperature, and charcoal canister purge. See Figure .