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Home >> Infiniti >> 2003 >> Q45 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Programming >> Idle Air Volume Learning >> With CONSULT-II
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With CONSULT-II

  1. Perform THROTTLE VALVE CLOSED POSITION LEARNING  procedure. Start engine and warm to normal operating temperature.
  2. Ensure all conditions under PRE-CONDITIONING  are met. Select IDLE AIR VOL LEARN in WORK SUPPORT mode with CONSULT-II. Press START and wait 20 seconds.
  3. Ensure CMPLT is displayed. Quickly increase engine speed 2 or 3 times. Ensure idle speed is 600-700 RPM and ignition timing is 12-22° BTDC.
  4. If INCMP is displayed, proceed as follows:
    • Ensure throttle valve is fully closed.
    • Check PCV valve operation.
    • Ensure no vacuum leaks exist.

    If problem is found, repair as necessary. If problem is not found, it may be helpful to perform TROUBLE DIAGNOSIS - SPECIFICATION VALUE. See TROUBLE SHOOTING - NO CODES article. If engine stalls or idle speed fluctuates, repair cause of condition and repeat procedure.

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