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. 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.

(For details, refer to Work Procedure .)