Airflow Meter/Sensor Test
Turn ignition off. Unplug wiring connector from airflow meter. Note terminal identification. Using an ohmmeter, measure resistance between specified terminals. Replace airflow meter if not within specification. See AIRFLOW METER RESISTANCE SPECIFICATIONS table.
AIRFLOW METER RESISTANCE SPECIFICATIONS
| Measure Between Terminals | Resistance in Ohms: | |
|---|---|---|
| E2-Vc | 100-300 | |
| E2-Vb | 200-400 | |
| E1-Fc | ||
| Measuring Plate Fully Closed | Infinity | |
| Measuring Plate Fully Open | 0 | |
| E2-Vs | ||
| Measuring Plate Fully Closed | 20-400 | |
| Measuring Plate Fully Open | 20-3000 | |
| E2-THA | ||
| -4°F (-20°C) | 10,000-20,000 | |
| 32°F (0°C) | 4000-7000 | |
| 68°F (20°C) | 2000-3000 | |
| 104°F (40°C) | 900-1300 | |
| 140°F (60°C) | 400-700 | |
NOTE:
On 4WD (4A-FE), air temperature sensor is tested as part of airflow meter.