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Home >> Infiniti >> 2019 >> QX50 Essential, FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (11 Of 12) >> DTC/Circuit Diagnosis >> DTC P26AB: Multi-Way Control Valve >> Component Inspection

Component Inspection

  1. CHECK ENGINE COOLANT TEMPERATURE SENSOR 1 
    1. Turn ignition switch OFF.
    2. Disconnect engine coolant temperature sensor1 harness connector.
    3. Remove engine coolant temperature sensor1.
    4. Check resistance between engine coolant temperature sensor1 terminals by heating with hot water as shown in the figure.
      G08855388Courtesy of NISSAN NORTH AMERICA, INC.

      Engine coolant temperature sensor1

      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 1. Refer to Exploded View .