Welcome to the North American Subaru Impreza Owners Club Sunday July 21, 2024
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Electrical & Lighting

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.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Closed Thread
 
Thread Tools Display Modes
Old 11-29-2003, 10:13 PM   #1
Extraze
Scooby Specialist
 
Member#: 16980
Join Date: Mar 2002
Location: QC, Canada
Default 2004 STi ECU Wiring diagram

Wondering if there is a document out there ...

im looking for ECU wires to tap for an HKS Camp system...

thanks
Extraze is offline  
Old 11-30-2003, 03:14 PM   #2
NicGordon
Scooby Specialist
 
Member#: 24827
Join Date: Sep 2002
Chapter/Region: MWSOC
Location: Michigan
Vehicle:
2008 Kia Spectra

Default

I can look into after work on Tuesday. I have the shop manual, so maybe it'll be in there.
NicGordon is offline  
Old 11-30-2003, 03:44 PM   #3
Extraze
Scooby Specialist
 
Member#: 16980
Join Date: Mar 2002
Location: QC, Canada
Default

Quote:
Originally posted by NicGordon
I can look into after work on Tuesday. I have the shop manual, so maybe it'll be in there.
that would be great !

i only need :

RPM Signal
Speed Sensor
Injection Pulse

let me know ... thanks
Extraze is offline  
Old 11-30-2003, 07:09 PM   #4
brunetmj
Scooby Specialist
 
Member#: 8023
Join Date: Jul 2001
Location: Way-upstate , NY
Vehicle:
2019 Crosstrek
white

Default

Speed sensor and tach wire can be found on connector I11 on the back of the gauges I11 is a ten pin connector , the smallest. Blue/green is the tach (c5 -toward the center) and green/black is the speed(c2 on the end) . I know they both work bcause i use both. Injector pulse i will have to look up.
brunetmj is offline  
Old 12-01-2003, 02:41 PM   #5
TreyS
Scooby Specialist
 
Member#: 42478
Join Date: Aug 2003
Chapter/Region: South East
Location: Atlanta, GA
Vehicle:
2004 WRX STi
White/Gold

Default

I looked up those sensors on the STi ecu pinout (ECM I/O Signal) from the manual I downloaded and got this:

Plug B134:

Pin 23 = I RPM

Plug B135:

Pin 5 = B 12v Switched (ignition)
Pin 19 = U 12v Constant
Pin 27 = S Speed Sensor

Plug B136:

Pin 3 = #4 injector
Pin 4 = #3 injector
Pin 5 = #2 injector
Pin 6 = #1 injector
Pin 22 = P (FCD)
Pin 23 = P (AFR) Air/ Fuel

Plug B137:

Pin 1 = E Ground


*There was no TPS info for our ECU I guess because we are drive by wire but this was the info on the diagram for the STi:

Plug B136:

Pin 18 = Main; Fully Closed = 0.6; Fully Open = 3.96
Pin 29 = Sub; Fully Closed = 1.48; Fully Open = 4.17
TreyS is offline  
Old 12-01-2003, 02:44 PM   #6
TreyS
Scooby Specialist
 
Member#: 42478
Join Date: Aug 2003
Chapter/Region: South East
Location: Atlanta, GA
Vehicle:
2004 WRX STi
White/Gold

Default

Pinouts are here

You might have to go to page 2 then back to 1 to see page 1.
TreyS is offline  
Old 12-01-2003, 07:39 PM   #7
Extraze
Scooby Specialist
 
Member#: 16980
Join Date: Mar 2002
Location: QC, Canada
Default

Quote:
Originally posted by TreyS
I looked up those sensors on the STi ecu pinout (ECM I/O Signal) from the manual I downloaded and got this:

Plug B134:

Pin 23 = I RPM

Plug B135:

Pin 5 = B 12v Switched (ignition)
Pin 19 = U 12v Constant
Pin 27 = S Speed Sensor

Plug B136:

Pin 3 = #4 injector
Pin 4 = #3 injector
Pin 5 = #2 injector
Pin 6 = #1 injector
Pin 22 = P (FCD)
Pin 23 = P (AFR) Air/ Fuel

Plug B137:

Pin 1 = E Ground


*There was no TPS info for our ECU I guess because we are drive by wire but this was the info on the diagram for the STi:

Plug B136:

Pin 18 = Main; Fully Closed = 0.6; Fully Open = 3.96
Pin 29 = Sub; Fully Closed = 1.48; Fully Open = 4.17
hmmm ... RPM and Speed sensors are quite obvious ... i dont know what people use for injector pulse ? maybe any of the 4 injector wires ?

any one has wired a HKS CAMP can shed any light on this ?

thanks for the help guys
Extraze is offline  
Old 12-03-2003, 01:54 AM   #8
brunetmj
Scooby Specialist
 
Member#: 8023
Join Date: Jul 2001
Location: Way-upstate , NY
Vehicle:
2019 Crosstrek
white

Default

Quote:
RPM and Speed sensors are quite obvious
The problem i ran into was the difficulty in tapping one of those wires (can't remember which one-tach or speed?) because it is buried in the center of the plug.Thats why i suggested picking them up behind the gauges where there is room to work.Up to you of course.
brunetmj is offline  
Old 12-16-2003, 03:41 PM   #9
WolfDrive
Scooby Newbie
 
Member#: 49506
Join Date: Nov 2003
Location: Brooklyn, NY
Vehicle:
2004 Impreza WRX STi
Java Black

Default

So when we're measuring Air/Fuel Ratio we should tap into the Mass Air Flow Sensor?

Is there any wire for measuring EGT's?
WolfDrive is offline  
Old 08-02-2013, 01:24 PM   #10
marcinna
Scooby Newbie
 
Member#: 364137
Join Date: Aug 2013
Default

just wondering if anyone has a guide for a bee*r in a 04 sti?
marcinna is offline  
Old 08-02-2013, 02:36 PM   #11
Mulder
Trust no one
Moderator
 
Member#: 11170
Join Date: Oct 2001
Chapter/Region: Tri-State
Location: NYC
Vehicle:
02 RAV4 MT
15 WRX/11 CRZ

Default

Please don't bump 10-year-old threads.
Mulder is offline  
Closed Thread

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
05+ JDM STI ECU Wiring Diagram JSarv Subaru Conversions 0 10-17-2009 11:40 PM
04 STi ECU Wiring Diagrams turbo2ltr Engine Management & Tuning 3 06-30-2004 06:09 AM
STi ecu wiring diagram STiMe Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo) 2 03-25-2004 03:23 PM

All times are GMT -4. The time now is 05:59 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2024 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission
Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.