Notices
LS - 3rd Gen (2001-2006) Discussion topics related to the flagship Lexus LS430

DataSystem Controller ASC680 Questions and Answers

Thread Tools
 
Search this Thread
 
Old Jul 24, 2008 | 04:26 PM
  #1  
junjdm's Avatar
junjdm
Thread Starter
Lexus Champion
 
Joined: Jul 2006
Posts: 4,431
Likes: 9
From: Tx
Default DataSystem Controller ASC680 Questions and Answers

I'll start the thread off w/ this question, GATO and I were having a discusion about the Data Controller for the UL Lexus LS430. If we leave the car slammed on "L" mode parked. For hours will that affect anything?

Also I noticed on the Data controller there are 2 UCF31 options how do you know which one is which? for the correct cars. Is one for the 01-03 and the other for the 04-06?



Let the Questions and Answers Begin
Reply
Old Jul 24, 2008 | 05:05 PM
  #2  
racinstyle's Avatar
racinstyle
Lexus Test Driver
 
Joined: Dec 2004
Posts: 1,123
Likes: 12
From: z
Default

I rolled on 9 and always dumpt to L when I parked. I would leave my car dumpt on L in the garage overnight, even for the week when Id go out of town on business. I drove like this for about 6 months, never had any problems. Then it went into the shop, and got some real air suspension.
Reply
Old Jul 24, 2008 | 05:18 PM
  #3  
junjdm's Avatar
junjdm
Thread Starter
Lexus Champion
 
Joined: Jul 2006
Posts: 4,431
Likes: 9
From: Tx
Default

Originally Posted by racinstyle
I rolled on 9 and always dumpt to L when I parked. I would leave my car dumpt on L in the garage overnight, even for the week when Id go out of town on business. I drove like this for about 6 months, never had any problems. Then it went into the shop, and got some real air suspension.
What air suspension are you running on? And how does the ride compare to the factory air suspension? Is it possibly smoother?
Reply
Old Jul 24, 2008 | 06:21 PM
  #4  
GSoup's Avatar
GSoup
Lexus Fanatic
CL Folding 10,000
20 Year Member
Photogenic
Photoriffic
 
Joined: Sep 2005
Posts: 5,095
Likes: 9
From: The Rotten Apple
Default

Originally Posted by junjdm
What air suspension are you running on? And how does the ride compare to the factory air suspension? Is it possibly smoother?
Here's some info on his set-up
https://www.clublexus.com/forums/sho...8&postcount=10
Reply
Old Jul 24, 2008 | 07:43 PM
  #5  
junjdm's Avatar
junjdm
Thread Starter
Lexus Champion
 
Joined: Jul 2006
Posts: 4,431
Likes: 9
From: Tx
Default

Originally Posted by GSoup
nice how much does something like that cost about?

and how is the ride compare to factory, when the height is on the same level?
Reply
Old Jul 24, 2008 | 09:08 PM
  #6  
airtime's Avatar
airtime
Racer
CL Folding 1,000,000
 
Joined: Apr 2007
Posts: 1,321
Likes: 15
From: Washington
Default

Originally Posted by junjdm
Also I noticed on the Data controller there are 2 UCF31 options how do you know which one is which? for the correct cars. Is one for the 01-03 and the other for the 04-06?
I chose the reverse "C" for my 04 and it seems to work perfect. Not sure what other character says. I had a friend translate the wording after UCF31 and its comes back as "Celsior" which would be correct.
Reply
Old Jul 24, 2008 | 09:53 PM
  #7  
racinstyle's Avatar
racinstyle
Lexus Test Driver
 
Joined: Dec 2004
Posts: 1,123
Likes: 12
From: z
Default

Originally Posted by junjdm
nice how much does something like that cost about?

and how is the ride compare to factory, when the height is on the same level?
Pros:
Faster lift/dump
More flexability in ride height
Not prone to blow like OEM struts

Cons:
Ride is decent, but it's no UL suspension
Requires a little work to maintane
Costly





Overall the reason why I switch was becauce I wanted it to dump and raise faster. At first I had modified my UL struts to accept aftermaket air management ( tank, compressors, lines, fittings, controller). The driverside rear blew after 2 days of installing ( long story it was at the body shop ). I then decided to go UAS with KYB sport struts. Besides the ride comfort, I <3 UAS.

Last edited by racinstyle; Jul 24, 2008 at 09:58 PM.
Reply
Old Jul 24, 2008 | 10:28 PM
  #8  
blacksc400's Avatar
blacksc400
Car Chat Moderator
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (4)
 
Joined: Jan 2003
Posts: 10,146
Likes: 2
From: Las Vegas!
Default

If I remember correct, the first one says After M/C Minor change, so it is 04 +
The second one is before Minor change, 01-03
Reply
ClubLexus Stories

Celebrating Lexus & Toyota from Around the Globe

story-0

Toyota and Lexus Join Mille Miglia For The First Time

 Verdad Gallardo
story-1

Lexus NX 350h: A Fuel-Sipping Secret Hot Hatch???

 Michael S. Palmer
story-2

5 Best & 5 Worst Lexus Daily Drivers

 Joe Kucinski
story-3

Top 5 Hottest Lexus & Toyotas in 2026 (Hardest To Buy)

 Brett Foote
story-4

2026 Lexus IS 350 F Sport Review: The Last of Its Kind Still Rocks

 Michael S. Palmer
story-5

Top 10 Most Confusing Things Lexus Has Ever Done!

 Joe Kucinski
story-6

2026 Lexus ES Review: Lexus Re-Embraces Founding Principles

 Michael S. Palmer
story-7

10 Lexus Bargains That are Cheaper Than a New Toyota RAV4

 Joe Kucinski
story-8

8 Weirdest Things Lexus Has Ever Built

 Verdad Gallardo
story-9

10 Lexus Designs That Have Aged Like Fine Wine

 Verdad Gallardo
Old Jul 25, 2008 | 08:31 AM
  #9  
GSoup's Avatar
GSoup
Lexus Fanatic
CL Folding 10,000
20 Year Member
Photogenic
Photoriffic
 
Joined: Sep 2005
Posts: 5,095
Likes: 9
From: The Rotten Apple
Default

Originally Posted by racinstyle
Overall the reason why I switch was becauce I wanted it to dump and raise faster. At first I had modified my UL struts to accept aftermaket air management ( tank, compressors, lines, fittings, controller). The driverside rear blew after 2 days of installing ( long story it was at the body shop ). I then decided to go UAS with KYB sport struts. Besides the ride comfort, I <3 UAS.
BINGO... If my OEM bags go (which I hope they don't )) , I'm definitely going UAS.
Reply
Old Jul 25, 2008 | 09:12 AM
  #10  
lexxuss's Avatar
lexxuss
Rookie
 
Joined: Feb 2008
Posts: 76
Likes: 0
From: Planet Earth
Default

Originally Posted by junjdm
Also I noticed on the Data controller there are 2 UCF31 options how do you know which one is which? for the correct cars. Is one for the 01-03 and the other for the 04-06?
Correct, harness is different: H12.9~H15.7 is made for 01-03 and H15.8~ for 04-06.
ASC680 controller is working for all LS430 (01-06).
Complete overview at http://www.datasystem.co.jp/catalog/pdf/asc.pdf
Reply
Old Jul 25, 2008 | 09:38 AM
  #11  
junjdm's Avatar
junjdm
Thread Starter
Lexus Champion
 
Joined: Jul 2006
Posts: 4,431
Likes: 9
From: Tx
Default

Originally Posted by lexxuss
Correct, harness is different: H12.9~H15.7 is made for 01-03 and H15.8~ for 04-06.
ASC680 controller is working for all LS430 (01-06).
Complete overview at http://www.datasystem.co.jp/catalog/pdf/asc.pdf
I understand there is two different harnesses, but my question is on the screen of the ASC680 there are (2) UCF31's to choose from. Which one is which? Will it matter between the 01-03 and the 04-06?
Reply
Old Jul 25, 2008 | 09:52 AM
  #12  
blacksc400's Avatar
blacksc400
Car Chat Moderator
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (4)
 
Joined: Jan 2003
Posts: 10,146
Likes: 2
From: Las Vegas!
Default

The first one is after M/C, 04+
Reply
Old Jul 25, 2008 | 10:53 AM
  #13  
GATO's Avatar
GATO
Lexus Champion
iTrader: (1)
 
Joined: Jul 2003
Posts: 3,288
Likes: 15
From: DFW TX
Default

nice thread!


I chose the one with the reveresed C and works well...

Also, I didnt even bother messing with speed sensor....I went directly onto the Air susp ECU and no problems yet....

total install time....about 15 min thanks to AIRTIME's Thread...
Reply
Old Jul 25, 2008 | 11:39 AM
  #14  
Hybrid-JD's Avatar
Hybrid-JD
Rookie
 
Joined: Dec 2006
Posts: 87
Likes: 0
From: Ontario
Default

do you need a harness for 01-03? or is it just for the 04's and up?
Reply
Old Jul 25, 2008 | 12:45 PM
  #15  
junjdm's Avatar
junjdm
Thread Starter
Lexus Champion
 
Joined: Jul 2006
Posts: 4,431
Likes: 9
From: Tx
Default

Yes you will need a harness for all year models both 01-03 and 04-06 are diff. from each other
Reply



All times are GMT -7. The time now is 04:16 PM.

story-0
Toyota and Lexus Join Mille Miglia For The First Time

Slideshow: A five-car lineup spanning more than five decades of Toyota performance and engineering will tackle one of Italy's most celebrated automotive routes.

By Verdad Gallardo | 2026-06-15 16:53:16


VIEW MORE
story-1
Lexus NX 350h: A Fuel-Sipping Secret Hot Hatch???

Slideshow: a quick review of the 2026 Lexus NX 350h F Sport Handling

By Michael S. Palmer | 2026-06-15 15:25:34


VIEW MORE
story-2
5 Best & 5 Worst Lexus Daily Drivers

Slideshow: The 5 best and 5 worst Lexus daily drivers

By Joe Kucinski | 2026-06-15 11:14:58


VIEW MORE
story-3
Top 5 Hottest Lexus & Toyotas in 2026 (Hardest To Buy)

These five Lexus and Toyota models are the most sought-after on the market right now.

By Brett Foote | 2026-06-15 10:47:52


VIEW MORE
story-4
2026 Lexus IS 350 F Sport Review: The Last of Its Kind Still Rocks

Slideshow: the 2026 IS 350 isn't all that new, and that's why we love it!

By Michael S. Palmer | 2026-06-04 14:35:23


VIEW MORE
story-5
Top 10 Most Confusing Things Lexus Has Ever Done!

Slideshow: 10 most confusing things Lexus has ever done.

By Joe Kucinski | 2026-06-04 09:40:55


VIEW MORE
story-6
2026 Lexus ES Review: Lexus Re-Embraces Founding Principles

Slideshow: Our First-Drive Review of the 2026 Lexus ES!

By Michael S. Palmer | 2026-05-29 20:30:16


VIEW MORE
story-7
10 Lexus Bargains That are Cheaper Than a New Toyota RAV4

Slideshow: 10 Lexus bargain that are cheaper than a new Toyota.

By Joe Kucinski | 2026-05-20 10:28:20


VIEW MORE
story-8
8 Weirdest Things Lexus Has Ever Built

Slideshow: From hoverboards to luxury yachts, these are the strangest projects Lexus has ever attached its badge to.

By Verdad Gallardo | 2026-05-16 11:34:36


VIEW MORE
story-9
10 Lexus Designs That Have Aged Like Fine Wine

Slideshow: Some luxury cars chase trends, but these Lexus models look better now than they did when they first rolled into showrooms.

By Verdad Gallardo | 2026-05-06 17:58:29


VIEW MORE