FUEL INJECTION (FUEL SYSTEMS)(H4DO) > Engine Coolant Temperature Sensor
INSPECTION
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 k? |
80°C (176°F) | Approx. 0.318±0.013 k? |
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