Intake Air Temperature (IAT) Sensor
NOTE:
IAT sensor is a part of volume airflow sensor assembly.
- Disconnect Volume Airflow (VAF) sensor connector. Check resistance between VAF sensor connector terminals No. 5 and 6. Compare air temperature and IAT sensor resistance value with standard values. See IAT SENSOR RESISTANCE table.
- Using hair dryer, heat IAT sensor and check resistance. Resistance should decrease as IAT temperature increases.
IAT SENSOR RESISTANCE
| Temperature - °F (°C) | Ohms |
|---|---|
| 32 (0) | 5300-6700 |
| 68 (20) | 2300-3000 |
| 104 (40) | 1000-1500 |
| 176 (80) | 300-420 |