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It is currently Fri Jan 09, 2009 1:05 am
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Nuke209
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Post subject: Dead 04sti ecu?  Posted: Tue Oct 14, 2008 7:54 pm |
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| Newbie |
Joined: Sun Oct 15, 2006 9:10 pm
Posts: 78
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So today, my friend brought his car to a shop to get it tuned on the dyno. We get it up there, pull off the rom image on the ecu, and after that, dead.
We couldn't connect with the ecu anymore (cannot read nor flash it).
So what can be the problem?
Cameron suggested to me to take a look at the ignition fuse (which we did) and it was still good.
BTW, the car does not start up after this issue, so now it sits on the dyno.
Any suggestions?
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merchgod
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Post subject: Re: Dead 04sti ecu? Posted: Tue Oct 14, 2008 8:59 pm |
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| Administrator |
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Joined: Wed Mar 29, 2006 10:38 pm
Posts: 4225
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try disconnecting the battery
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Nuke209
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Post subject: Re: Dead 04sti ecu? Posted: Tue Oct 14, 2008 9:59 pm |
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| Newbie |
Joined: Sun Oct 15, 2006 9:10 pm
Posts: 78
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oh yea, we did that too
the car will not go into test mode, period.
learning view does not see anything, same with ecuexplorer also, and the logger from romraider.
the can hear the fuel pump non stop.
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®@©E®
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Post subject: Re: Dead 04sti ecu? Posted: Wed Oct 15, 2008 6:10 am |
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| Experienced |
Joined: Sat Mar 10, 2007 1:16 pm
Posts: 100
Location: Ukraine
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Check all power and grounds on your ECU (You may need wiring diagram)
Then disconnect battery, disconnect ECU and
carefully pull circuit board from ECU box and observe it for damages like cracked tracks.
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Nuke209
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Post subject: Re: Dead 04sti ecu? Posted: Wed Oct 15, 2008 4:37 pm |
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| Newbie |
Joined: Sun Oct 15, 2006 9:10 pm
Posts: 78
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everything looks fine.
someone should be dropping another 04 sti ecu for us to use for the moment.
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BigC
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Post subject: Re: Dead 04sti ecu? Posted: Wed Oct 15, 2008 7:11 pm |
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| Newbie |
Joined: Thu May 24, 2007 10:19 pm
Posts: 10
Location: Kansas City
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I had the same issue but it occurred after a flash went bad. i.e. my cable had a short in it and decided to hose things in the middle of a flash although I didn't know at that time that's what the problem was... I tried disconnecting the battery cable but that didn't work. I did as racer suggested above, pulled the ecu out and carefully removed the board. I didn't see anything wrong with it, not that I knew what I was looking for anyway  I put it back together and re-installed it and I was able to reflash it with the flaky cable and get it running. Mine was doing that funky BS where it was like stuck in test mode whether the test connector was engaged or not. I'm not sure that what I did will work for you. In fact I think it was a fluke that it's working at all. I do have a backup ecu courtesy of Subie Gal now. That set me back a bit 
_________________
-Brent
'03 WRX Hybrid 5MT
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Nuke209
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Post subject: Re: Dead 04sti ecu? Posted: Wed Oct 15, 2008 10:38 pm |
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| Newbie |
Joined: Sun Oct 15, 2006 9:10 pm
Posts: 78
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got the new ecu and it worked fine.
old ecu, well, couldn't do squat ish with it.
probably time to send it into tactrix for a bench flash.
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Tgui
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Post subject: Re: Dead 04sti ecu? Posted: Fri Oct 17, 2008 10:09 am |
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| RomRaider Developer |
Joined: Tue Jul 11, 2006 9:25 pm
Posts: 992
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Nuke209 wrote: got the new ecu and it worked fine.
old ecu, well, couldn't do squat ish with it.
probably time to send it into tactrix for a bench flash. This is why I keep a spare 04 STi ECU in my back seat  I'm always flashing places that are not walking distance to home.
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AIM: TguiWRX
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Turbo_Mike
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Post subject: Re: Dead 04sti ecu? Posted: Fri Oct 17, 2008 12:47 pm |
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| Experienced |
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Joined: Thu Oct 19, 2006 11:34 am
Posts: 835
Location: Queens, NY / Dudley, MA
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Tgui wrote: Nuke209 wrote: got the new ecu and it worked fine.
old ecu, well, couldn't do squat ish with it.
probably time to send it into tactrix for a bench flash. This is why I keep a spare 04 STi ECU in my back seat I'm always flashing places that are not walking distance to home. lol I keep a bugeye ecu and 04 sti ecu as spares too 
_________________
03 WRX - 2.3L stroker, all the goodies
04 STi 6-speed, R180, brembos
Perrin GT35R, 44mm EWG
Rom Raider Development Tester
Open Source Tuner
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Nuke209
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Post subject: Re: Dead 04sti ecu? Posted: Fri Oct 17, 2008 3:56 pm |
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| Newbie |
Joined: Sun Oct 15, 2006 9:10 pm
Posts: 78
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so anyone have any idea on why it would just poop out on us like that?
just pulled the rom, and car just went coocoo
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