Air Flow Sensor Plate Position Sensor: Description and Operation

The air sensor potentiometer is connected to the air sensor lever. It generates a voltage signal based on the position of the air sensor plate. This signal is used by the fuel injection control unit to determine cold acceleration enrichment.
The ignition control unit also uses this voltage signal to determine ignition timing. By measuring the position of the air sensor plate, the ignition control unit can determine engine load. This value, together with engine speed, is used to determine ignition timing.