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Home >> Infiniti >> 2014 >> QX60 Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes & Symptom Tests) (Except Hybrid) >> DTC/Circuit Diagnosis >> 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: 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: Checking Fuel Injector Function Using Tool
    G04875112Courtesy of NISSAN NORTH AMERICA, INC.

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: Proceed to "DIAGNOSIS PROCEDURE ".