1. Check that the engine coolant temperature sensor has no deformation, cracks or other damages.
2. 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.
|
(A) |
Thermometer |
|
(B) |
Engine coolant temperature sensor |
|
(C) |
Hexagonal part height: To approx.1/3 |
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.
|
Water temperature |
Terminal No. |
Standard |
|
20°C (68°F) |
1 and 2 |
Approx. 2.45±0.2 kΩ |
|
80°C (176°F) |
Approx. 0.318±0.013 kΩ |