2020 Infiniti QX80 LimitedFACTORY OEM SERVICE PROCEDURE

Confirmation Procedure

  1. PRECONDITIONING 

    If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

    1. Turn ignition switch OFF and wait at least 10 seconds.
    2. Turn ignition switch ON.
    3. Turn ignition switch OFF and wait at least 10 seconds.

    TEST CONDITION:

    Before performing the following procedure, confirm that battery voltage is more than 10 V at ignition switch ON.

    GO TO 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE-1 
    1. Start the engine and let it idle.
    2. Maintain the following conditions for at least 10 consecutive seconds.

      Engine outlet coolant temperature

      (engine coolant temperature sensor 1)

      10 deg.C (50 deg.F) or more

      Engine oil temperature

      135 deg.C (275 deg.F) or less

      Engine speed

      4, 500 rpm or less

      Accelerator pedal

      Fully released
    3. Check 1st trip DTC.

    Is 1st trip DTC detected?

    YES

    Refer to DTC Diagnosis Procedure .

    NO

    GO TO 3.

  3. PERFORM DTC CONFIRMATION PROCEDURE-2 
    1. Turn ignition switch OFF and wait at least 10 seconds.
    2. Start the engine and let it idle.
    3. Maintain the following conditions for at least 10 consecutive seconds.

      Engine outlet coolant temperature

      (engine coolant temperature sensor 1)

      10 deg.C (50 deg.F) or more

      Engine oil temperature

      135 deg.C (275 deg.F) or less

      Engine speed

      4, 500 rpm or less
    4. Check 1st trip DTC.

    Is 1st trip DTC detected?

    YES

    Refer to DTC Diagnosis Procedure .

    NO

    INSPECTION END

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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.