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Home >> Infiniti >> 2011 >> G37 IPL, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (VQ37VHR) - DTC U0101 Through P0183 >> DTC P0116: ECT Sensor >> Component Function Check

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.
    TERMINAL RESISTANCE REFERENCE CHART

    Terminals Condition Resistance (kΩ)
    1 and 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 Engine Coolant Temperature Sensor By Heating Hot Water
    G07168901Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    YES: GO TO 2.

    NO: Proceed to "DIAGNOSIS PROCEDURE ".

  2. CHECK INTERMITTENT INCIDENT

    Check intermittent incident. Refer to "INTERMITTENT INCIDENT ".

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: Proceed to "DIAGNOSIS PROCEDURE ".

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