Air Temperature Sensor
- Disconnect air temperature sensor connector. Turn ignition on. Check voltage between Red/Black wire terminals and ground. If voltage is not 4-5 volts, check sensor resistance or wiring harness for open or short.
- Remove air temperature sensor and place it in water with a thermometer. Heat water to specified temperature and check resistance. See AIR TEMPERATURE SENSOR RESISTANCE table. Replace air temperature sensor if resistance is not within specification.
AIR TEMPERATURE SENSOR RESISTANCE
| Temperature | Ohms |
|---|---|
| 68°F (20°C) | 2280-2870 |
| 176°F (80°C) | 290-390 |