Airflow Meter

Airflow meter measures intake airflow volume. Airflow meter delivers intake air input signal by means of a variable resistor (potentiometer). On T100 2.7L, airflow meter converts intake air readings into a voltage signal by means of the air swirl frequency.

Input signal is sent to Engine Control Module (ECM) for controlling fuel injection system operation and ignition timing (spark advance). Airflow meter also contains a switch which is used for controlling fuel pump operation.