Airflow Meter
Turn ignition off. Disconnect wiring connector from airflow meter. Note terminal identification. See Fig 1. 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 - NON-TURBO
| Application (Terminals) | Resistanc: Ohms | |
|---|---|---|
| THA-E2 | ||
| -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 | |
| Vc-E2 | 200-400 | |
| Fc-E1 | ||
| Measuring Plate Fully Closed | Infinity | |
| Measuring Plate Other Than Closed | 0 | |
| Vs-E2 | ||
| Measuring Plate Fully Closed | 20-600 | |
| Measuring Plate Fully Open | 20-1200 | |
AIRFLOW METER RESISTANCE SPECIFICATIONS - TURBO
| Application (Terminals) | Resistanc: Ohms | |
|---|---|---|
| THA-E2 | ||
| -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 | |
| Ks-E1 | Infinity | |
| E1-Ks | 5000-10,000 | |
| Vc-E1 | 10,000-15,000 | |
| E1-Vc | 5000-10,000 | |