LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2011 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Component Testing >> Low Pressure Fuel Pump >> Component Inspection (Low Pressure Fuel Pump)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Component Inspection (Low Pressure Fuel Pump)

  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.
      RESISTANCE SPECIFICATION

      + - 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 "REMOVAL AND INSTALLATION ".