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Home >> Nissan-Datsun >> 2013 >> Juke SL, FWD, Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS U0101 To P0128 >> 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.
    4. Check resistance between engine coolant temperature sensor terminals by heating with hot water as shown in the figure below.
      Engine coolant temperature sensor Condition Resistance (kΩ)
      + -
      Terminal
      1 2 Temperature [°C (°F)] 20 (68) 2.37 - 2.63
      50 (122) 0.68 - 1.00
      90 (194) 0.236 - 0.260
      Fig 1: Checking Resistance Between ECT Sensor Terminals
      G08690341Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: INSPECTION END

      NO: Replace engine coolant temperature sensor. Refer to "EXPLODED VIEW ".