Air Flow Meter
Turn ignition off. Disconnect wiring connector from air flow meter. Using an ohmmeter, measure resistance between each terminal. See Fig 1. If resistance values do not meet specifications shown in chart, replace air flow meter.
AIR FLOW METER RESISTANCE SPECIFICATIONS
| Terminals | Condition | Ohms | ||
|---|---|---|---|---|
| E2 - Vs | Flap Closed | 20-400 | ||
| " | Flap Open | (1) 20-1000 | ||
| E2 - Vc | N/A | 100-300 | ||
| E2 - Vb | N/A | 200-400 | ||
| 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 | ||
| E1 - Fc | Flap Closed | Infinity (4) | ||
| " | Flap Open | Zero | ||
|
||||