Idle Air Volume Learning Procedure: Description
WARNING: This page is about a different car, the 2002 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.
This operation is used to learn the idle air volume that keeps each engine within specification range. Idle air volume learning must be performed after idle speed or ignition timing is adjusted, or after electric throttle control actuator or ECM is replaced.