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Home >> Infiniti >> 2012 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0137 To P0463 >> DTC P0181: FTT Sensor >> Component Function Check
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Component Function Check

  1. CHECK FUEL TANK TEMPERATURE (FTT) SENSOR
    1. Turn ignition switch OFF.
    2. Disconnect fuel level sensor unit and fuel pump harness connector.
    3. Remove fuel level sensor unit. Refer to "REMOVAL AND INSTALLATION ".
    4. Check resistance between fuel level sensor unit and fuel pump terminals by heating with hot water as shown in the figure.
    Terminals Condition Resistance (kΩ)
    4 and 5 Temperature [°C (°F)] 20 (68) 2.3 - 2.7
    50 (122) 0.79 - 0.90
    Fig 1: Checking Fuel Tank Temperature Sensor
    G08260200Courtesy of NISSAN NORTH AMERICA, INC.

    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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