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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 P0125: ECT Sensor >> 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 in illustration.
    Fig 1: Checking Engine Coolant Temperature Sensor By Heating Hot Water
    G07168909Courtesy of NISSAN MOTOR CO., U.S.A.
    TERMINAL RESISTANCE REFERENCE CHART

    Terminal 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

    Is the inspection result normal? 

    YES: INSPECTION END

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

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