Idle Air Volume Learning (IAVL) Procedure

IDLE AIR VOLUME LEARNING (IAVL) PROCEDURE

NOTE:
The IAVL procedure will normally complete within 2 minutes after Procedure Start.

1. Use CONSULT-II to confirm / perform the following Pre-Conditions:





NOTE:
The IAVL procedure will self-cancel if any of the following Pre-Conditions are not met and maintained for as long as the procedure is running.

After warming up the engine and confirming all of the above preconditions, then

2. Turn the ignition OFF and wait at least 10 seconds.

3. Start the engine and let the idle stabilize for about 30 seconds.

NOTE:
If the engine will not idle, hold the engine RPM at about 2000, then slowly bring it down to an idle.

4. Using CONSULT-II, select [WORK SUPPORT] > [IDLE AIR VOL LEARN].

5. Touch [START] and wait 20 seconds to 2 minutes: CMPLT should be displayed.

NOTE:
^ If INCMP is displayed within 2 minutes, or test is not finished within 2 minutes, Idle Air Volume Learning was not carried out successfully.

^ Make sure you set all of the preconditions exactly as shown in the chart above and performed steps 1 through 6 exactly as shown.

^ If needed, refer the IAVL diagnostic procedures in the Service Manual.

6. Rev up the engine two or three times and allow it to return to idle.