Welcome to the North American Subaru Impreza Owners Club Wednesday December 24, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Normally Aspirated Powertrain

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 09-27-2010, 08:15 PM   #1
sureshot007
Scooby Specialist
 
Member#: 142405
Join Date: Mar 2007
Chapter/Region: Tri-State
Location: TeamHazardRally.com
Vehicle:
#716 G2 OBS

Default Physical ECU Burn???

I have a 98 Forester, and after some troubleshooting, I have discovered that the ECU has some damage to it internally - specifically the diode at D602 has a crack around the center, and the trace on the board leading too it has flaked up and cracked. So my question is does anyone know that system is related to this diode, or maybe help me figure out what pin it leads to? I'm pretty sure there is a short somewhere on the chassis that caused this, but it would be nice to figure it out before burning another ECU.
* Registered users of the site do not see these ads.
sureshot007 is offline   Reply With Quote
Old 09-29-2010, 02:05 PM   #2
formula91
Scooby Specialist
 
Member#: 102984
Join Date: Dec 2005
Chapter/Region: MWSOC
Location: Northbrook, IL
Vehicle:
2005 2.5RS 4EAT
Platinum Silver

Default

Quote:
Originally Posted by sureshot007 View Post
I have a 98 Forester, and after some troubleshooting, I have discovered that the ECU has some damage to it internally - specifically the diode at D602 has a crack around the center, and the trace on the board leading too it has flaked up and cracked. So my question is does anyone know that system is related to this diode, or maybe help me figure out what pin it leads to? I'm pretty sure there is a short somewhere on the chassis that caused this, but it would be nice to figure it out before burning another ECU.
I'm not really sure about anything you just said, but have you checked the factory service manual? You can try tracking it to a pin as well...

Usually, there are safety measures to prevent shorting damaging the ECU, and this usually means that the ECU was shorted/damaged relatively near the ECU.

Water getting in the ECU is a definite possibility. Any bad storms, offroading, puddle-swimming?
formula91 is offline   Reply With Quote
Old 09-29-2010, 02:09 PM   #3
sureshot007
Scooby Specialist
 
Member#: 142405
Join Date: Mar 2007
Chapter/Region: Tri-State
Location: TeamHazardRally.com
Vehicle:
#716 G2 OBS

Default

Using a voltmeter, I was able to trace the circuit on the board back to the pin that corresponds to the neutral switch, in case anyone else is every curious.
sureshot007 is offline   Reply With Quote
Reply

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
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Fried my ECU today and burned up my motor. 06STi General Community 0 10-11-2006 12:18 AM
Attn: Physics guru wannabes. Physics question ahoy! Argh, matey! Asinine Off-Topic 53 12-29-2005 12:11 AM
Lean burn on oem ECU - use PIC to offset O2 sensor? ahains Engine Management & Tuning 23 09-13-2005 02:18 PM
SRT4 forums physics lesson..."HOTTER AIR BURNS TEH BETTAR!!" RaceCarRiot Off-Topic 17 01-27-2004 07:27 PM
Chip burning/ECU tuner DonkeyPunch Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 3 08-26-2002 08:27 PM


All times are GMT -4. The time now is 10:33 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.