Idle Learn Procedure

IDLE LEARN PROCEDURE:
Any time the battery is disconnected, the programmed position of the Idle Air Control (IAC) valve pintle is lost, and replaced with a default value. To return the IAC valve pintle to the correct position, perform the following procedure:

1. After restoring battery power, connect the Tech 1 or equivalent "Scan" tool.
2. Select "IAC System," then select "Idle Learn" in the "MISC TEST" mode.
3. Proceed with idle learn as directed.
^ This procedure allows the Electronic Control Module (ECM) memory to be updated with the correct IAC valve pintle position, for the vehicle, and provide a stable idle speed.