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Home >> Infiniti >> 2013 >> JX35 FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes & Symptom Tests) >> DTC/Circuit Diagnosis >> Fuel Injector >> Component Function Check
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Component Function Check

  1. INSPECTION START 

    Turn ignition switch to START.

    Are any cylinders ignited? 

    YES: GO TO 2.

    NO: Proceed 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. 

      Fig 1: Listening For Fuel Injector Operating Sound
      G08769272Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: INSPECTION END

      NO: Proceed to "DIAGNOSIS PROCEDURE ".