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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 501 (Engine Control System (DTC/Circuit Diagnosis) (2 Of 3)) >> DTC/Circuit Diagnosis >> DTC P0181: FTT Sensor >> Component Inspection

Component Inspection

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
  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 - VQ40DE .
    4. Check resistance between fuel level sensor unit and fuel pump terminals by heating with hot water as shown in the figure.
      GNSJPBIA5420Z-420Courtesy of NISSAN NORTH AMERICA, INC.

      Fuel level sensor unit and fuel pump

      Condition

      Resistance (kOhm)

      +

      -

      Terminal

      4

      5

      Temperature [ deg.C (deg.F)]

      20 (68)

      2.3 - 2.7

      50 (122)

      0.79 - 0.90

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Replace fuel level sensor unit and fuel pump. Refer to Removal and Installation - VQ40DE .