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Home >> Nissan-Datsun >> 2019 >> Altima Edition ONE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Engine Control System (DTC/Circuit Diagnosis) (Pr25DD) (4 Of 4)) >> DTC/Circuit Diagnosis >> Engine Coolant Temperature Sensor >> Component Inspection >> PR25DD engine

PR25DD engine

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  1. CHECK ENGINE COOLANT TEMPERATURE (ECT) SENSOR 
    1. Turn ignition switch OFF.
    2. Disconnect ECT sensor harness connector.
    3. Remove ECT sensor.
    4. Check resistance between ECT sensor terminals by heating with hot water as shown in the figure.
      G08855388Courtesy of NISSAN NORTH AMERICA, INC.

      ECT sensor

      Condition

      Resistance (kOhm)

      +

      -

      Terminal

      1

      2

      Temperature [ deg. C (deg. F)]

      20 (68)

      2.37 - 2.63

      50 (122)

      0.68 - 1.00

      90 (194)

      0.236 - 0.260

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Replace engine coolant temperature sensor. Refer to Exploded View .