2013 Infiniti M56 BaseFACTORY OEM SERVICE PROCEDURE

Component Function Check

  1. PRECONDITIONING 
    WARNING: When performing the following procedure, always observe the handling of the fuel. Refer to "GENERAL PRECAUTIONS ".

    TESTING CONDITION: 

    Before starting component function check, preparation of draining fuel and refilling fuel is required. 

    : GO TO 2.

  2. PERFORM COMPONENT FUNCTION CHECK 
    NOTE: Start from step  8, if it is possible to confirm that the fuel cannot be drained by 30 l  (7-7/8 US gal, 6-5/8 Imp gal) in advance.
    1. Prepare a fuel container and a spare hose.
    2. Release fuel pressure from fuel line. Refer to "WORK PROCEDURE ".
    3. Remove the fuel feed hose on the fuel level sensor unit. Refer to "REMOVAL AND INSTALLATION ".
    4. Connect a spare fuel hose where the fuel feed hose was removed.
    5. Turn ignition switch ON.
    6. Drain fuel by 30 l  (7-7/8 US gal, 6-5/8 Imp gal) from the fuel tank using proper equipment.
    7. Confirm that the fuel gauge indication varies.
    8. Fill fuel into the fuel tank for 30 l  (7-7/8 US gal, 6-5/8 Imp gal).
    9. Confirm that the fuel gauge indication varies.

      Is the inspection result normal? 

      YES: INSPECTION END

      NO: Proceed to "DIAGNOSIS PROCEDURE ".

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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