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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 116 (Engine Controls Self-Diagnostics - Pathfinder) >> Programming >> Idle Air Volume Learning >> Without CONSULT-II
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Without CONSULT-II

WARNING: This page is about a different car, the 2003 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: It is better to count the time accurately with a clock.
NOTE: It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit has a malfunction.
NOTE: Ensure ACCELERATOR PEDAL RELEASED POSITION LEARN  and THROTTLE VALVE CLOSED POSITION LEARNING  have been performed before continuing.
  1. Start engine and warm to normal operating temperature.
  2. Ensure all conditions under PRE-CONDITIONING  are met.
  3. Turn ignition off and wait at least 10 seconds.
  4. Confirm that accelerator pedal is fully released, turn ignition on and wait 3 seconds.
  5. Repeat the following procedure quickly five times within 5 seconds: Fully depress the accelerator pedal. Fully release the accelerator pedal. See Fig 1.
  6. Wait 7 seconds, fully depress the accelerator pedal and keep it depressed for about 20 seconds until the MIL stops blinking and turns ON.
  7. Fully release the accelerator pedal within 3 seconds after the MIL turns ON.
  8. Start engine and let it idle.
  9. Wait 20 seconds.
  10. Rev up engine 2 or 3 times and ensure that idle speed and ignition timing are within specifications. M/T and A/T in Park or Neutral: Idle speed: 700-800 RPM, ignition timing: 10-20 BTDC.
  11. If idle speed and timing is not as specified, Idle Air Volume Learning will not be complete. In this case, find the cause of the incident. Proceed as follows:
    1. Check that throttle valve is fully closed.
    2. Check PCV valve operation.
    3. Check that downstream of throttle valve is free from air leakage.
    4. When the above 3 items check out OK, engine component parts and their installation condition are questionable. Check and eliminate the cause of the incident. It is useful to perform TROUBLE DIAGNOSIS - SPECIFICATION VALUE in TROUBLE SHOOTING - NO CODES article.
    5. If any of the following conditions occur after the engine has started, eliminate the cause of the incident and perform IDLE AIR VOLUME LEARNING all over again:
      • Engine stalls.
      • Erroneous idle.
Fig 1: Performing Idle Air Volume Learning
G00103831Courtesy of NISSAN MOTOR CO., U.S.A.
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