2004 Infiniti M45FACTORY OEM SERVICE PROCEDURE

With CONSULT-II

  1. Turn ignition switch ON.
  2. Start engine and warm it up to normal operating temperature.

    If engine cannot be started, go toΒ DIAGNOSTIC PROCEDUREΒ .

  3. Select "DATA MONITOR" mode with CONSULT-II.
  4. Check the voltage of "MAS A/F SE-B1" with "DATA MONITOR".
  5. Increases engine speed to about 4,000 RPM.
  6. Monitor the linear voltage rise in response to engine speed increases.

    If NG, go to DIAGNOSTIC PROCEDUREΒ .

    If OK, go to following step.

  7. Maintain the following conditions for at least 10 consecutive seconds.
    Fig 1: Maintaining Following Conditions For 10 Consecutive Seconds
    G00795711Courtesy of NISSAN MOTOR CO., U.S.A.
  8. If DTC is detected, go to DIAGNOSTIC PROCEDUREΒ .
Factory Service Tools

Use the Manual With the Right Hardware

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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