Ambient Temperature Sensor Test
WARNING: This page is about a different car, the 2002 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
- Turn the ignition OFF.
- Disconnect the ATS harness connector.
- Measure the resistance of the ATS. See AMBIENT TEMPERATURE SENSOR RESISTANCE table. The sensor resistance should read between these min/max values. If the resistance values are not OK, replace the sensor.
AMBIENT TEMPERATURE SENSOR RESISTANCE
| Temperature | K/Ohms |
|---|---|
| 32°F (0°C) | 29.33-35.99 |
| 50°F (10°C) | 17.99-21.81 |
| 68°F (20°C) | 11.37-13.61 |
| 77°F (25°C) | 9.12-10.86 |
| 86°F (30°C) | 7.37-8.75 |
| 104°F (40°C) | 4.90-5.75 |