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Home >> Nissan-Datsun >> 2021 >> Sentra S >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (2 Of 2) >> Components/Circuit Diagnosis >> Engine Coolant Temperature Sensor >> Component Inspection
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Component Inspection

  1. CHECK ENGINE COOLANT TEMPERATURE SENSOR 
    1. Turn ignition switch OFF.
    2. Disconnect engine coolant temperature sensor harness connector.
    3. Remove engine coolant temperature sensor. Refer to Exploded View .
    4. Check the resistance between engine coolant temperature sensor terminals by heating with hot water as shown in the figure, below.
      G08855388Courtesy of NISSAN NORTH AMERICA, INC.

      ECT sensor

      Condition

      Resistance

      Terminal

      1

      2

      Temperature [ deg. C (deg. F)]

      20 (68)

      2.37 - 2.63 kOhms

      50 (122)

      0.68 - 1.00 kOhms

      90 (194)

      0.236 - 0.260 kOhms

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Replace engine coolant temperature sensor. Refer to Exploded View .