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Home >> Infiniti >> 2017 >> QX50 RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (2 Of 4) >> DTC / Circuit Diagnosis >> DTC P0181: FTT Sensor >> Component Function Check >> Diagnostic Test
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Diagnostic Test

  1. CHECK FUEL TANK TEMPERATURE 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 illustration.
      G00498927Courtesy of NISSAN NORTH AMERICA, INC.
      Terminals Condition Resistance (kΩ)
      7 and 8 Temperature [°C (°F) ] 20 (68) 2.3 - 2.7
      50 (122) 0.79 - 0.90

    Is the inspection result normal?

    YES 

    GO TO STEP 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 .