2003 Infiniti M45FACTORY OEM SERVICE PROCEDURE

Work Support Mode

This mode can be used for the following functions:

  1. FUEL PRESSURE RELEASE

    Use to release fuel pressure. Fuel pump will stop by touching START during engine idling. Crank a few times after engine stalls.
  2. IDLE AIR VOL LEARN

    Use to perform idle air volume learning procedure. The idle air volume that keeps the engine within the specified range is memorized in ECM.
  3. SELF-LEARNING CONT

    Use to clear the coefficient of self-learning control value. Air/fuel mixture ratio returns to the original coefficient.
  4. NOTE: When starting engine, CONSULT-II may display BATTERY VOLTAGE IS LOW. Charge battery, even if using charged battery.

  5. EVAP SYSTEM CLOSE
    Use when testing EVAP system for leaks. This will open vacuum cut valve by-pass valve and close EVAP canister vent control valve in order to seal EVAP system under the following conditions:
    • Ignition switch on.
    • Engine not running.
    • Ambient temperature is above 32Β°F (0Β°C).
    • No vacuum and no high pressure in EVAP system.
    • Fuel tank temperature is more than 32Β°F (0Β°C).
    • Within 10 minutes after starting EVAP SYSTEM CLOSE.
    • When trying to execute EVAP SYSTEM CLOSE when above conditions are not met, CONSULT-II will discontinue it and display appropriate instruction.
  6. TARGET IDLE RPM ADJ

    Use when setting target idle speed. This function is usually unnecessary.
  7. TARGET IGNITION TIMING ADJ

    Use when adjusting target ignition timing. After adjustment, verify target ignition timing with a timing light.

Factory Service Tools

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Pair factory procedures with proven DIY tools so the instructions are easier to execute.

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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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