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Engine Coolant Temperature Sensor: Inspection
- Check that the engine coolant temperature sensor has no deformation, cracks or other damages.
- Immerse the engine coolant temperature sensor and a thermometer in water.
CAUTION:
Take care not to allow water to get into the engine coolant temperature sensor connector. Completely remove any water inside.
 Courtesy of SUBARU OF AMERICA, INC.
|
| (A) |
Thermometer |
| (B) |
Engine coolant temperature sensor |
| (C) |
Hexagonal part height: To approx. 1/3 |
- Raise water temperature gradually, measure the resistance between the engine coolant temperature sensor terminals when the temperature is 20°C (68°F) and 80°C (176°F).
NOTE:
Agitate the water for even temperature distribution.
 Courtesy of SUBARU OF AMERICA, INC.
|
| Water temperature |
Terminal No. |
Standard |
| 20°C (68°F) |
1 - 2 |
2.25 - 2.65 kΩ |
| 80°C (176°F) |
0.305 - 0.331 kΩ |