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Home >> Infiniti >> 2012 >> FX50 >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (VK50VE) - FX50 - Component & System Checks, Ecu & Symptom Diagnosis, Precautions & Preparation, Periodic Maintenance, Service Data And Specifications (SDS) >> Fuel Injector >> Component Function Check

Component Function Check

  1. INSPECTION START

    Turn ignition switch to START.

    Are any cylinders ignited? 

    YES: GO TO 2.

    NO: Go to "DIAGNOSIS PROCEDURE ".

  2. CHECK FUEL INJECTOR FUNCTION

    With CONSULT 

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

    Without CONSULT 

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

    Clicking sound should be heard. 

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: Go to "DIAGNOSIS PROCEDURE ".

    Fig 1: Checking Fuel Injector Operating Sound
    G04875112Courtesy of NISSAN NORTH AMERICA, INC.