Go Back   AstinaGT Forums > Performance & Technical > Performance & General Maintenance

Reply
 
Thread Tools Display Modes
Old 11-01-2010, 09:49 PM   #1
SP BLING
AstinaGT Regular
 
SP BLING's Avatar
 
Join Date: Feb 2008
Location: Quakers Hill, NSW
Car: Mazda 3 & BA Astina
Posts: 277
ECU Wiring Diagram for BP-05 (BA Series 3)

Hi guys,

I finally got my car running, but I have major tuning issues trying to run my cams off the factory ECU. I've picked up a Greddy eManage to try and resolve the fuel delivery issues if possible.

I've found a wiring diagram on Club323f.com that seems to match my ECU on the pins that I tested, but it's missing the wiring for the MAF and RPM pickup point that I need to get the basic unit up and running.



Does anyone have the full pinout listing of the ECU?
SP BLING is offline   Reply With Quote
Sponsored Links
Old 11-01-2010, 10:11 PM   #2
Mad Mat
HONEYWELL REPRESENT
 
Mad Mat's Avatar
 
Join Date: Aug 2005
Location: Salisbury - Inner City
Car: 1997 BA Hardtop - Had a 2003 BJii J48 Sport20, and 2x bg SOHC astina hatches
Posts: 5,011
Send a message via MSN to Mad Mat
rupe, ryan, and cosmo dude will be the best people to ask about this buddy
__________________

1994 323 BG Hatch 2005-2007 Crashed into truck
1991 323 BG Hatch 2007-2008/9 SOLD
2003 BJ SP20 J48 Hatch 2008-2011 Regretfully SOLD
1997 BA I4 Sedan 2012-CURRENT
1985 BF 323 Hatch 2014-2015
SOLD
1989 MX5 2015-2015
Mad Mat is offline   Reply With Quote
Old 11-01-2010, 10:27 PM   #3
project.r.racing
Senior Member
 
project.r.racing's Avatar
 
Join Date: Sep 2004
Location: n/a
Car: n/a
Posts: 10,929
rpm pick up should be 11 or 12 on that diagram. comes off the dissy somewhere, as the CAS is located within the dissy itself, but i forget which.

11 is the wiring for the pulse that is sent up to the tacho in the dash.
project.r.racing is offline   Reply With Quote
Old 11-01-2010, 11:20 PM   #4
SP BLING
AstinaGT Regular
 
SP BLING's Avatar
 
Join Date: Feb 2008
Location: Quakers Hill, NSW
Car: Mazda 3 & BA Astina
Posts: 277
Yeah I've now found the CAS as 4F and the Ignition signal under 4N after searching the US forums.

But still need this confirmed and MAF location.
SP BLING is offline   Reply With Quote
Old 11-01-2010, 11:25 PM   #5
Mad Mat
HONEYWELL REPRESENT
 
Mad Mat's Avatar
 
Join Date: Aug 2005
Location: Salisbury - Inner City
Car: 1997 BA Hardtop - Had a 2003 BJii J48 Sport20, and 2x bg SOHC astina hatches
Posts: 5,011
Send a message via MSN to Mad Mat
ok mate sorry 4 this stupid question. so ur looking 4 the oxgen sensor on the exhaust manifold??? it number 52. aka to get the air fuel ratio???
__________________

1994 323 BG Hatch 2005-2007 Crashed into truck
1991 323 BG Hatch 2007-2008/9 SOLD
2003 BJ SP20 J48 Hatch 2008-2011 Regretfully SOLD
1997 BA I4 Sedan 2012-CURRENT
1985 BF 323 Hatch 2014-2015
SOLD
1989 MX5 2015-2015
Mad Mat is offline   Reply With Quote
Old 12-01-2010, 07:41 AM   #6
asanga
Senior Member
 
asanga's Avatar
 
Join Date: Dec 2006
Location: Sutherland Sydney
Car: astina BA 1997 1.8Ltr
Posts: 609
the diagram you have there is for series 1/2. Series 3 is completely different. I've been searching for series 3 diagram for so long without any luck. I have all factory manuals including wiring diagram supplement but they all are written for series 1/2. Series 1/2 ECU has 3 plugs and series 3 has only 2 plugs. In series 3 ,MAF, IAT, TPS pins are all shifted from middle plug to left plug.


Top series 2, bottom series 3



If you go by the above pin diagram

MAF wires are going to 4C=4A=4D (r/b), 4M (g/b), 4L (p), 4E, 4B(r/w)

These 5 wires include IAT within them. 4C,4A, 4D are all interconnected.

IAC wires 4Q (b/w), 4S (b)

O2 sensor 4J

TPS 4H (b/y), 4G (g/r) , 4E (b/b)

in series 1/2 ECU these pins are used for different sensors or not used at all
e.g 4E, 4H = crank position sensor (if available)
4G= not used
4S= not used
4Q= IAC valve
__________________
1997 Astina BA11P3, 5 Door Hatch, 1.8 DOHC, 5 Speed, 90,000 kms

asanga is offline   Reply With Quote
Old 12-01-2010, 09:35 AM   #7
SP BLING
AstinaGT Regular
 
SP BLING's Avatar
 
Join Date: Feb 2008
Location: Quakers Hill, NSW
Car: Mazda 3 & BA Astina
Posts: 277
Quote:
Originally Posted by Mad Mat View Post
ok mate sorry 4 this stupid question. so ur looking 4 the oxgen sensor on the exhaust manifold??? it number 52. aka to get the air fuel ratio???
No not the o2 sensor. Need the MAF (mass airflow meter) and RPM (tach) signal. This then allows you to play with the air/fuel ratios of the engine (in basic form).



Thanks Asanga! I'll give those a try. I saw your post elsewhere as well asking for the pinouts....
SP BLING is offline   Reply With Quote
Old 12-01-2010, 05:21 PM   #8
Cosmo Dude
コスモ
 
Cosmo Dude's Avatar
 
Join Date: Dec 2002
Location: Location: Vic
Car: Mazda '95 Astina I4, '86 B2K and '10 3 MZR-CD
Posts: 7,888
The white wire from the distributor is tach signal, It looks like 4N is the ECU signal.
The only series 3 wiring manual I have is in Japaneese.
__________________
My 'stina Hatch
Cosmo Dude is offline   Reply With Quote
Old 12-01-2010, 05:34 PM   #9
Cosmo Dude
コスモ
 
Cosmo Dude's Avatar
 
Join Date: Dec 2002
Location: Location: Vic
Car: Mazda '95 Astina I4, '86 B2K and '10 3 MZR-CD
Posts: 7,888
Looks like 4M is air volume and 4L is air temp.
If 4L is an output its input is common to one wire on the TPS and a water temp sensor. If I can get my scanner working I'll scan the JDM page which may help (and try labling things in english).
__________________
My 'stina Hatch
Cosmo Dude is offline   Reply With Quote
Old 12-01-2010, 08:07 PM   #10
SP BLING
AstinaGT Regular
 
SP BLING's Avatar
 
Join Date: Feb 2008
Location: Quakers Hill, NSW
Car: Mazda 3 & BA Astina
Posts: 277
Yep I've been working through it today as well.....

This is what I've got working so far:
4M is the MAF single
4L is the Air intake temp sensor
4H is the TPS
White wire from Dizzy is the RPM signal (currently pulling from Diagnosis connector)

This has allowed me to get the basic functions of the eManage working - and tested!


I'm currently working on the Injectors and Ignition at the moment. This is what I've found:

4U is Injector 1
4V is Injector 2
4W is Injector 3
4X is Injector 4
4C is Injector GND

4N is Ignition (Is this one correct as you had this as the ECU signal?)
4F is the Cam Angle Sensor (CAS)

Last edited by SP BLING; 12-01-2010 at 08:09 PM.
SP BLING is offline   Reply With Quote
Old 12-01-2010, 09:08 PM   #11
SP BLING
AstinaGT Regular
 
SP BLING's Avatar
 
Join Date: Feb 2008
Location: Quakers Hill, NSW
Car: Mazda 3 & BA Astina
Posts: 277
Ok I've finished wiring the Injectors and Ignition as per the above and it works beautifully!

I've been able to add some additional timing in at idle and got it running relatively smooth now.

Any idea where the Dizzy tach single comes out at inside the cabin? I'm guessing it's the signal in the cluster driving the Tacho??
SP BLING is offline   Reply With Quote
Old 13-01-2010, 11:22 AM   #12
Cosmo Dude
コスモ
 
Cosmo Dude's Avatar
 
Join Date: Dec 2002
Location: Location: Vic
Car: Mazda '95 Astina I4, '86 B2K and '10 3 MZR-CD
Posts: 7,888
It comes through the engine harness and switches to the front harness in one of the three plugs between the ECU and firewall.
__________________
My 'stina Hatch
Cosmo Dude is offline   Reply With Quote
Old 19-01-2010, 04:07 PM   #13
SP BLING
AstinaGT Regular
 
SP BLING's Avatar
 
Join Date: Feb 2008
Location: Quakers Hill, NSW
Car: Mazda 3 & BA Astina
Posts: 277
Thanks Cosmo! I found it behind the Instrument Cluster which is a little easier to access, so I tapped into it there.

Going for a Dyno Tune tomorrow so that will hopefully 100% prove if all the connections are working properly.
SP BLING is offline   Reply With Quote
Old 20-01-2010, 12:34 PM   #14
SP BLING
AstinaGT Regular
 
SP BLING's Avatar
 
Join Date: Feb 2008
Location: Quakers Hill, NSW
Car: Mazda 3 & BA Astina
Posts: 277
Well the ECU wiring is spot on. I'll post up a full ECU pinout chart shortly for the Series 3 for anyone else wishing to use an eManage or other piggyback.

Unfortunately for me, the eManage has not got enough fuel adjustment for my (non standard) engine.... So it's now gotta be replaced with a full standalone.
SP BLING is offline   Reply With Quote
Old 20-01-2010, 12:40 PM   #15
project.r.racing
Senior Member
 
project.r.racing's Avatar
 
Join Date: Sep 2004
Location: n/a
Car: n/a
Posts: 10,929
Quote:
Originally Posted by SP BLING View Post
Well the ECU wiring is spot on. I'll post up a full ECU pinout chart shortly for the Series 3 for anyone else wishing to use an eManage or other piggyback.

Unfortunately for me, the eManage has not got enough fuel adjustment for my (non standard) engine.... So it's now gotta be replaced with a full standalone.
Awesome for the 1st bit.

And what do you mean by the 2nd bit. Not enough adjustment to raise the amount of fuel injected in?
project.r.racing is offline   Reply With Quote
Old 20-01-2010, 01:16 PM   #16
SP BLING
AstinaGT Regular
 
SP BLING's Avatar
 
Join Date: Feb 2008
Location: Quakers Hill, NSW
Car: Mazda 3 & BA Astina
Posts: 277
Yes - precisely that. I could possibly fit an adjustable fuel regulator to help increase the fuel pressure, but it's unknown if that'll still provide enough adjustment. Much easier to go for a full standalone.

Info from the tuner so far (yet to pick the car up):
  • Running rich at idle - factory ECU is constantly adjusting the IAC to keep the rpms low causing the idle to hunt.
  • Running very lean up to 4,500rpm (pings when hot)
  • Runs very rich from 4,500rpm up to 7,000rpm (black smoke out the exhaust)
SP BLING is offline   Reply With Quote
Old 20-01-2010, 01:38 PM   #17
project.r.racing
Senior Member
 
project.r.racing's Avatar
 
Join Date: Sep 2004
Location: n/a
Car: n/a
Posts: 10,929
I thought the eManage controlled idle rpm?
project.r.racing is offline   Reply With Quote
Old 20-01-2010, 08:13 PM   #18
SP BLING
AstinaGT Regular
 
SP BLING's Avatar
 
Join Date: Feb 2008
Location: Quakers Hill, NSW
Car: Mazda 3 & BA Astina
Posts: 277
Quote:
Originally Posted by project.r.racing View Post
I thought the eManage controlled idle rpm?
No. Only air flow meter, ignition and limited injector control (extends injector duration only).
SP BLING is offline   Reply With Quote
Old 20-01-2010, 08:46 PM   #19
Evilist
Junior Member
 
Join Date: Jul 2009
Location: New Zealand
Car: Mazda 323
Posts: 238
I have the diagrams for the 3 plug ECU if someone wants them PM me i might upload them
__________________
FE3 POWER

1985 Mazda 323 BF5P - FE3T powered
1988 Mazda Familia BFMP XG-I FE3 Powered
Evilist is offline   Reply With Quote
Old 03-03-2011, 03:11 PM   #20
project.r.racing
Senior Member
 
project.r.racing's Avatar
 
Join Date: Sep 2004
Location: n/a
Car: n/a
Posts: 10,929
Bump - someone got the pin outs for Series 3 ecu?
project.r.racing 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


All times are GMT +10. The time now is 10:32 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
2001- 2010 AstinaGT