Mass Airflow (MAF) Sensor
WARNING: This page is about a different car, the 1996 Saab 9000. However, it is still accessible from the selected car via links, so may be relevant.
The MAF sensor is located between the air cleaner and throttle body. Sensor contains a ceramic plate which is heated electrically to 356°F (180°C). When airflow increases, heating element requires a higher voltage to maintain temperature.