2011 Infiniti G25 BaseFACTORY OEM SERVICE PROCEDURE

Component Function Check

  1. INSPECTION START

    Turn ignition switch to START.

    Is any cylinder ignited?Β 

    YES: GO TO 2.

    NO: Go to "DIAGNOSIS PROCEDUREΒ ".

  2. CHECK FUEL INJECTOR FUNCTION

    With CONSULT-IIIΒ 

    1. Start engine.
    2. Perform "POWER BALANCE" in "ACTIVE TEST" mode with CONSULT-III.
    3. Check that each circuit produces a momentary engine speed drop.

    Without CONSULT-IIIΒ 

    1. Start engine.
    2. Listen to each fuel injector operating sound.

      Clicking sound should be heard.Β 

      Fig 1: Listening To Each Fuel Injector Operating Sound
      G04875112Courtesy of NISSAN MOTOR CO., U.S.A.

      Is the inspection result normal?Β 

      YES: INSPECTION END

      NO: Go to "DIAGNOSIS PROCEDUREΒ ".

Factory Service Tools

Use the Manual With the Right Hardware

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When to See a Mechanic

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

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

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