2024 Infiniti QX55 EssentialFACTORY OEM SERVICE PROCEDURE

Work Flow

OVERALL SEQUENCE 

GNSDB138964Courtesy of NISSAN NORTH AMERICA, INC.

DETAILED FLOW 

  1. GET INFORMATION FOR SYMPTOM 

    Obtain information about the malfunction from the customer and check if it corresponds to NORMAL OPERATING CONDITION.

    Does it correspond to NORMAL OPERATING CONDITION?

    >>

    Explain to the customer that it is not a malfunction.

    >>

    GO TO 2.

  2. PERFORM SELF-DIAGNOSIS 

    SYMBOL With CONSULT Perform self-diagnosis for "CHASSIS CONTROL".

    Is DTC detected?

    >>

    Record or print self-diagnosis results and freeze frame data (FFD). GO TO 4.

    >>

    GO TO 3.

  3. PERFORM TROUBLE DIAGNOSIS BY SYMPTOM 

    Perform trouble diagnosis by symptom and repair/replace malfunctioning parts.

    >>

    GO TO 5.

  4. PERFORM DTC/CIRCUIT DIAGNOSIS 

    Perform DTC/CIRCUIT DIAGNOSIS and repair/replace malfunctioning parts.

    >>

    GO TO 5.

  5. FINAL CHECK 

    Recheck the symptom and check that symptom is not reproduced on the same conditions.

    Is the symptom reproduced?

    >>

    GO TO 2.

    >>

    INSPECTION END

Factory Service Tools

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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.