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HOMESERVICE MANUALSINFINITI2019Q70 3.7 LUXE, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 12 (ENGINE CONTROL SYSTEM (5.6L) (DTC/CIRCUIT DIAGNOSIS) (9 OF 9))DTC/CIRCUIT DIAGNOSISFUEL INJECTORCOMPONENT FUNCTION CHECK
2019 Infiniti Q70 3.7 Luxe, AWD

Component Function Check

2019 Infiniti Q70 3.7 Luxe, AWDSECTION Component Function Check
WARNING: This page is about a different variant/trim than selected.
  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 

    SYMBOL 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.

    SYMBOL WITHOUT CONSULT

    1. Start engine.
    2. Listen to each fuel injector operating sound.
      G04812223Courtesy of NISSAN NORTH AMERICA, INC.

      Clicking sound should be heard.

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Proceed to Diagnosis Procedure .

RENDER: 1.0x

NO RELATED

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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.