2004 STi ECU Wiring diagram

Extraze · 11-29-2003, 10:13 PM

Wondering if there is a document out there ...

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

thanks

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NicGordon · 11-30-2003, 03:14 PM

I can look into after work on Tuesday. I have the shop manual, so maybe it'll be in there.

Extraze · 11-30-2003, 03:44 PM

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

brunetmj · 11-30-2003, 07:09 PM

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.

TreyS · 12-01-2003, 02:41 PM

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 · 12-01-2003, 02:44 PM

Pinouts are here

You might have to go to page 2 then back to 1 to see page 1.

Extraze · 12-01-2003, 07:39 PM

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

brunetmj · 12-03-2003, 01:54 AM

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.

WolfDrive · 12-16-2003, 03:41 PM

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?

marcinna · 08-02-2013, 01:24 PM

just wondering if anyone has a guide for a bee*r in a 04 sti?

Mulder · 08-02-2013, 02:36 PM

Please don't bump 10-year-old threads.

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11-29-2003, 10:13 PM	#1
Extraze Scooby Specialist Member#: 16980 Join Date: Mar 2002 Location: QC, Canada	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 * Registered users of the site do not see these ads.

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	I can look into after work on Tuesday. I have the shop manual, so maybe it'll be in there.

11-30-2003, 07:09 PM	#4
brunetmj Scooby Specialist Member#: 8023 Join Date: Jul 2001 Location: Way-upstate , NY Vehicle: 2019 Crosstrek white	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.

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	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

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	Pinouts are here You might have to go to page 2 then back to 1 to see page 1.

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	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?

08-02-2013, 01:24 PM	#10
marcinna Scooby Newbie Member#: 364137 Join Date: Aug 2013	just wondering if anyone has a guide for a bee*r in a 04 sti?

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	Please don't bump 10-year-old threads.