Intake Air Temperature (IAT) Sensor
NOTE:
On all models except Mirage 1.5L, IAT sensor is a part of Volume Air Flow (VAF) 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 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 |