Go Back   SUPERNISSANS.NET Nissan Owners Community > SUPERNISSANS COMMUNITY > Nissan Altima Technical Discussion > Frequently Asked Questions - Altima
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 05-24-2008, 10:21 AM
fr0 masta j's Avatar
Senior Member
Join Date: Oct 2002
Location: Boston, MA
Posts: 172
fr0 masta j is on a distinguished road
Default How To: Relearn idle air volume

This procedure is useful if you have a rough idle, or whenever you change intakes, whether it be to CAI or WAI, or just back to stock, etc.

Idle Air Volume Learning
“Idle Air Volume Learning” is an operation to learn the idle air volume that keeps each engine within the specific
range. It must be performed under any of the following conditions:
l Each time electric throttle control actuator or ECM is replaced.
l Idle speed or ignition timing is out of specification.
Before performing “Idle Air Volume Learning”, make sure that all of the following conditions are satisfied.
Learning will be cancelled if any of the following conditions are missed for even a moment.
l Battery voltage: More than 12.9V (At idle)
l Engine coolant temperature: 70 - 100C (158 - 212F)
l PNP switch: ON
l Electric load switch: OFF
(Air conditioner, headlamp, rear window defogger)
On vehicles equipped with daytime light systems, set lighting switch to the 1st position to light
only small lamps.
l Steering wheel: Neutral (Straight-ahead position)
l Vehicle speed: Stopped
l Transmission: Warmed-up
For A/T models with CONSULT-II, drive vehicle until “FLUID TEMP SE” in “DATA MONITOR” mode of “A/
T” system indicates less than 0.9V.
For A/T models without CONSULT-II and M/T models, drive vehicle for 10 minutes.

Perform EC-676, "Accelerator Pedal Released Position Learning" .
2. Perform EC-677, "Throttle Valve Closed Position Learning" .
3. Start engine and warm it up to normal operating temperature.
4. Check that all items listed under the topic “PRE-CONDITIONING” (previously mentioned) are in good
5. Turn ignition switch “OFF” and wait at least 10 seconds.
6. Confirm that accelerator pedal is fully released, turn ignition switch “ON” and wait 3 seconds.
7. Repeat the following procedure quickly five times within 5 seconds.
a. Fully depress the accelerator pedal.
b. Fully release the accelerator pedal.
8. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 20 seconds until the MIL stops
blinking and turned ON.
9. Fully release the accelerator pedal within 3 seconds after the MIL goes off.
10. Start engine and let it idle.
Idle speed M/T: 70050 rpm
A/T: 70050 rpm (in “P” or “N” position)
Ignition timing M/T: 155BTDC
A/T: 155BTDC (in “P” or “N” position)
11. Wait 20 seconds.
12. Rev up the engine two or three times and make sure that idle speed and ignition timing are within the
2002 3.5 SE - NOW STOCK - had....
Performance: Injen CAI | Nismo Cat-back Exhaust | OBX Headers | NWP Block Plate | K-Sport Kontrol Pro Coilovers | CE Rear Anti-Sway Bar| Racingline Endlinks | iRotors xdrilled/slotted Rotors | Hawk HPS Brake Pads

Exterior: 19" Axis Hiros | Stillen Front Lip | Active Tuning S2 Grille | Hella 7000K HID Kit | Blacked-out Headlights | SE-R Taillights | Strada Eyelids | 35% Tint | Debadged

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

New To Site? Need Help?

All times are GMT -4. The time now is 02:11 AM.

Forum Stats
Members: 9,402
Threads: 9,378
Posts: 113,638

Newest Member: FTP187
Latest Threads
Forum Sponsors
Contact us to be here
Forum Partners

Powered by vBulletin®
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
DTO Garage vBulletin Plugins by Drive Thru Online, Inc.

Search Engine Friendly URLs by vBSEO 3.1.0