Intake Air Temperature (IAT) Sensor
WARNING: This page is about a different car, the 1997 Mazda Millenia. However, it is still accessible from the selected car via links, so may be relevant.
- Vehicle is equipped with 3 different IAT sensors. Each IAT sensor has unique resistance characteristics. One IAT sensor is located in air filter housing, another sensor is located in dynamic chamber at right rear of engine, and remaining IAT sensor is located in Lysholm compressor on top right of engine.
- Remove IAT sensor(s) to be tested. Place IAT sensor and thermometer in a container of water. Connect ohmmeter between IAT sensor terminals. Slowly heat water. Observe resistance reading at specified temperatures. See IAT SENSOR RESISTANCE table. If resistance is not as specified, replace IAT sensor.
IAT SENSOR RESISTANCE
| Temperature °F (°C) | Ohms | |
|---|---|---|
| IAT Sensor (Air Cleaner Housing) | ||
| 68 (20) | 2200-2700 | |
| 176 (80) | 290-350 | |
| IAT Sensor (Dynamic Chamber) | ||
| 77 (25) | 29,700-36,300 | |
| 185 (85) | 3330-3670 | |
| IAT Sensor (Lysolm Compressor) | ||
| 212 (100) | 5600-6900 | |