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Home >> Toyota >> 1993 >> Celica All-Trac >> Repair and Diagnosis >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Airflow Sensor (Except 1.6L 4A-FE & 2.2L 5S-FE)

Airflow Sensor (Except 1.6L 4A-FE & 2.2L 5S-FE)

Airflow sensor is located in airflow meter and measures intake airflow volume. Airflow meter converts intake air readings into a voltage signal by means of a variable resistor (potentiometer). On all models, input signal is sent to Engine Control Module (ECM) for controlling fuel injection system operation and ignition timing (spark advance).

NOTE: Airflow meter may be referred to as Volume Airflow (VAF) meter or Mass Airflow (MAS) meter.
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