Intake Air Temperature (IAT) Sensor
NOTE:
On all models except Mirage 1.5L, IAT sensor is a part of volume airflow sensor assembly. On Mirage 1.5L, IAT is a separate unit.
- On Mirage 1.5L, disconnect IAT sensor connector and check resistance across IAT sensor terminals. On all other models, 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 RESISTANCES table.
- Using hair dryer, heat IAT sensor and check resistance. Resistance should decrease as IAT temperature increases.
IAT SENSOR RESISTANCES
| Temperature - °F (°C) | Ohms |
|---|---|
| 32 (0) | 5300-6700 |
| 68 (20) | 2300-3000 |
| 104 (40) | 1000-1500 |
| 176 (80) | 300-420 |