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Home >> Infiniti >> 2024 >> QX80 Premium Select, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (2 Of 2) >> Component /Circuit Diagnosis >> Engine Coolant Temperature Sensor >> Component Inspection
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Component Inspection

  1. CHECK ENGINE COOLANT TEMPERATURE SENSOR 1 
    1. Turn ignition switch OFF.
    2. Disconnect engine coolant temperature sensor 1 harness connector.
    3. Remove engine coolant temperature sensor 1.
    4. Check resistance between engine coolant temperature sensor 1 terminals by heating with hot water as shown in the figure, below.
      GNSDB108064Courtesy of NISSAN NORTH AMERICA, INC.
      Terminals Condition Resistance (kΩ)
      1 and 2 Temperature [°C (°F)] 20 (68) 2.35 - 2.73
      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 CYLINDER HEAD : Exploded View .