Airflow Meter Test
Turn ignition off. Disconnect wiring connector from airflow meter. Using an ohmmeter, measure resistance between each terminal. See Fig 1 resistance values do not meet specifications shown in chart, replace airflow meter.
AIRFLOW METER RESISTANCE SPECIFICATIONS
| Terminals | Condition | Ohms | ||
|---|---|---|---|---|
| E1 - Fc | Flap Closed | Infinity | ||
| " | Flap Open | Zero | ||
| 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 | ||
| E2 - Vb | N/A | 200-400 | ||
| E2 - Vc | N/A | 200-400 | ||
| E2 - Vs | Flap Closed | 20-400 | ||
| " | Flap Open | (1) 20-1000 | ||
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