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Home >> Infiniti >> 2011 >> EX35 Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS U0101 Through P0128 >> DTC P0117, P0118: 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.
    4. Check resistance between engine coolant temperature sensor terminals by heating with hot water as shown in the illustration.
    RESISTANCE SPECIFICATION

    Terminals Condition Resistance (kΩ)
    1 and 2 Temperature [°C (°F)] 20 (68) 2.10 - 2.90
    50 (122) 0.68 - 1.00
    90 (194) 0.236 - 0.260
    Fig 1: Checking Resistance Between Engine Coolant Temperature Sensor Terminals With Heating
    G07165000Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: Replace engine coolant temperature sensor.

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