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Home >> Infiniti >> 2018 >> QX80 AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostics) (2 Of 2) >> Component/Circuit Diagnosis >> Engine Coolant Temperature Sensor 2 >> Component Inspection
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Component Inspection

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

      ECT sensor 2

      Condition

      Resistance

      +

      -

      Terminal

      1

      2

      Temperature [ deg. C (deg. F)]

      20 (68)

      2.35 - 2.73 k Ohms

      50 (122)

      0.68 - 1.00 k Ohms

      90 (194)

      0.236 - 0.260 k Ohms

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Replace engine coolant temperature sensor 2. Refer to Exploded View .