Airflow Meter & Sensor Test
Turn ignition off. Unplug wiring connector from airflow meter. Note terminal identification. See Fig 3 or Fig 4. Using an ohmmeter, measure resistance between specified terminals. On Supra Turbo models, use ONLY an analog ohmmeter. Replace airflow meter if not within specification. See AIRFLOW METER RESISTANCE SPECIFICATIONS table.
AIRFLOW METER RESISTANCE SPECIFICATIONS
| Measure Between Terminals: | Resistance in Ohms Should Read: | ||
|---|---|---|---|
| Supra (7M-GE) Non-Turbo | |||
| E2-Vc | 200-400 | ||
| E1-Fc | |||
| Measuring Plate Fully Closed | Infinity | ||
| Measuring Fully Plate Open | 0 | ||
| E2-Vs | |||
| Measuring Plate Fully Closed | 200-600 | ||
| Measuring Plate Fully Open | 20-1200 | ||
| Supra (7M-GTE) Turbo | |||
| Ks-E1 | Infinity | ||
| E1-Ks | 5000-10,000 | ||
| Vc-E1 | 10,000-15,000 | ||
| E1-Vc | 5000-10,000 | ||
| All Models | |||
| 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 | ||