Idle Air Volume Learning: Description

Idle Air Volume Learning is a function of ECM to learn the idle air volume that keeps engine idle speed within the specific range. (For details, refer to Work Procedure .) It must be performed under the following conditions:

• Each time electric throttle control actuator or ECM is replaced.
• Each time VVEL actuator sub assembly or VVEL control module is replaced.
• Idle speed or ignition timing is out of specification.