IAT Sensor Resistance
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 | |
|---|---|---|
| ES300 | ||
| -4 (-20) | 13,600-18,400 | |
| 68 (20) | 2210-2690 | |
| 140 (60) | 490-670 | |