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Home >> Infiniti >> 2024 >> QX80 Luxe, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (2 Of 2) >> Component /Circuit Diagnosis >> Low Pressure Fuel Pump >> Component Inspection
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Component Inspection

  1. CHECK FUEL PRESSURE REGULATOR 
    1. Turn ignition switch OFF.
    2. Check low fuel pressure. Refer to Work Procedure .

    Is inspection result normal?

    YES>>

    INSPECTION END

    NO>>

    GO TO 2.

  2. CHECK LOW PRESSURE FUEL PUMP 
    1. Turn ignition switch OFF.
    2. Disconnect fuel level sensor unit and fuel pump.
    3. Check resistance between fuel level sensor unit and fuel pump terminals as follows.
      + - Condition Resistance
      Fuel level sensor unit and fuel pump
      Terminals
      1 3 Temperature: 25°C (77°F) 0.2 - 5.0 Ω

    Is the inspection result normal?

    YES>>

    INSPECTION END

    NO>>

    Replace fuel level sensor unit and fuel pump. Refer to FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY : Removal and Installation .