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Home >> Infiniti >> 2003 >> G35 4D Sedan, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Programming >> Idle Air Volume Learning >> Learning Procedure Without CONSULT-II
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Learning Procedure Without CONSULT-II

  1. Perform ACCELERATOR PEDAL RELEASED POSITION LEARNING  .
  2. Perform THROTTLE VALVE CLOSED POSITION LEARNING  .
  3. Start engine and warm to normal operating temperature.
  4. Ensure all conditions under PREPARATION  are met.
  5. Turn ignition off, and wait for at least 10 seconds.
  6. Ensure accelerator pedal is fully released. Turn ignition on and wait 3 seconds.
  7. Repeat the following procedure quickly 5 times within 5 seconds:
    • Fully depress accelerator pedal.
    • Fully release accelerator pedal.
  8. Wait 7 seconds, fully depress the accelerator pedal and maintain it depressed for about 20 seconds until the MIL stops blinking and remains illuminated.
  9. Fully release the accelerator pedal within 3 seconds.
  10. Allow engine to idle.
  11. Wait 20 seconds.
  12. Quickly increase, then decrease engine speed 2 or 3 times. Ensure engine speed is 600-700 RPM and ignition timing is 10-20 degrees BTDC with transmission in Park or Neutral position. If idle speed and timing are not as specified, adjust as necessary and repeat idle air volume learning procedure. See THROTTLE POSITION SENSOR, IGNITION TIMING & IDLE SPEED in ON-VEHICLE ADJUSTMENTS article. If idle speed and timing are as specified, go to next step.
  13. If idle air volume learning cannot be performed successfully, check following:
    • Ensure throttle valve is fully closed.
    • Check PCV valve operation.
    • Ensure no vacuum leaks exist.
    • Adjust closed throttle position switch and reset memory. See THROTTLE POSITION SENSOR, IGNITION TIMING & IDLE SPEED in ON-VEHICLE ADJUSTMENTS article.
    • If all of the above items check okay, engine components and installation are suspect. Perform appropriate BASIC INSPECTION procedure in ON-VEHICLE ADJUSTMENTS article.
    • If after engine starts, engine stalls or idle speed fluctuates, repair as necessary. After repair, repeat idle air volume learning procedure.
    If no problem is found, it may be helpful to perform TROUBLE DIAGNOSIS - SPECIFICATION VALUE in TROUBLE SHOOTING - NO CODES article.
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