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Component Function Check

  1. CHECK ENGINE COOLANT TEMPERATURE (ECT) SENSOR 
    1. Turn ignition switch OFF.
    2. Disconnect ECT sensor harness connector.
    3. Remove ECT sensor. Refer to "EXPLODED VIEW ".
    4. Check resistance between ECT sensor terminals by heating with hot water as shown in the figure below.
      ECT 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
      G08690337Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: Check intermittent incident. Refer to "INTERMITTENT INCIDENT ".

      NO: Proceed to "DIAGNOSIS PROCEDURE ".

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