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Home >> Nissan-Datsun >> 2011 >> Quest SL >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS U0101 To P0152 >> DTC P0116: ECT Sensor >> Component Inspection
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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 as per the following.
      TERMINALS RESISTANCE REFERENCE CHART

      Terminals Condition Resistance (kΩ)
      1 and 2 Temperature [°C (°F)] 20 (68) 2.1 - 2.9
      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 ".

      Fig 1: Checking Resistance Between ECT Sensor Terminals By Heating With Hot Water
      G04886485Courtesy of NISSAN MOTOR CO., U.S.A.
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