IAT Sensor Resistance
WARNING: This page is about a different car, the 2003 Lexus RX 300 and 2003 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.
On all models, IAT sensor is part of Mass Airflow (MAF) sensor. Turn ignition off. Disconnect MAF sensor connector. Measure resistance between MAF sensor terminals THA and E2. See Fig 1. Replace MAF sensor if resistance is not as specified. See INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE table.
INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE
| Ambient Temperature °F (°C) | Ohms |
|---|---|
| -4 (-20) | 13,600-18,400 |
| 68 (20) | 2210-2690 |
| 140 (60) | 493-667 |