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Airflow Meter

Turn ignition off. Disconnect wiring connector from airflow meter. Using an ohmmeter, measure resistance between each terminal. If resistance values do not meet specifications shown in table, replace airflow meter.

Fig 1: Measuring Airflow Meter Resistance
G74054Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
AIRFLOW METER RESISTANCE SPECIFICATIONS

Terminals Condition Ohms
E1 - Fc Flap Closed Infinity
E2 - THA -4°F (-20°C) 10,000-20,000
E2 - THA 32°F (0°C) 4000-7000
E2 - THA 68°F (20°C) 2000-3000
E2 - THA 104°F (40°C) 900-1300
E2 - THA 140°F (60°C) 400-700
E2 - Vb N/A 200-400
E2 - Vc N/A 100-300
E2 - Vs Flap Open 200-1200