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Home >> Nissan-Datsun >> 2014 >> Versa Note S Plus >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes & Symptom Tests) >> DTC/Circuit Diagnosis >> DTC P0128: Thermostat Function >> Component Inspection

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 resistance between engine coolant temperature sensor terminals by heating with hot water as shown in the figure.
      Fig 1: Checking Engine Coolant Temperature Sensor
      G04886485Courtesy of NISSAN NORTH AMERICA, INC.
      Engine coolant temperature sensor Condition Resistance (kΩ)
      Terminal
      1 2 Temperature [°C (°F)] 20 (68) 2.10 - 2.90
      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 ".

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