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Home >> Subaru >> 2018 >> Impreza Base, 4D Sedan, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 1 (Engine Control/Fuel System) >> Engine Coolant Temperature Sensor >> Inspection

Engine Coolant Temperature Sensor: Inspection

WARNING: This page is about a different car, the 2018 Subaru Crosstrek. However, it is still accessible from the selected car via links, so may be relevant.
  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.
    G12391467Courtesy of SUBARU OF AMERICA, INC.
  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.
G11252861Courtesy of SUBARU OF AMERICA, INC.
Water temperature Terminal No. Standard
20°C (68°F) 1 and 2 2.45±0.2 kΩ
80°C (176°F) 0.318±0.013 kΩ