looking for dohc ecu wiring diagram

[RS_OBD'oh_2]

Hey guys...
I've been every where in every forum. I've found some info, but not exactly what I am looking for. If someone could point me in the direction of the actual ecu pin outs that would be great.
FYI, I am going to be installing an AEM F/IC on my 96 DOHC. I've been giong thru the install guide and I have no idea if we use MAG or HALL type sensors. With your help I will be posting a full how to guide on installing the F/IC. If someone knows, what pins/ colours would they be? Need crank and cam.


I doubt I'll get much help on this... but anything you can offer would be great. Thank you.

[Custommx3]

http://www.mx-3.com/manuals/index.php?f ... %20Manual/

Probably in the electrical TS manual

[RS_OBD'oh_2]

close. Not nearly as detailed as needed.

Has anyone adjusted the timing? I'm sure I am not the only one who's done this. Can anyone remember the crank/cam wires used?

[shameem]

I dont think B6DE has a separate crank sensor. The cam sensor is inside the disty and its hall effect type.

[Custommx3]

You adjust the timing in DIAG mode. Jump GND to TEN in the diag box, adjust the disty by using a timing light.

[RS_OBD'oh_2]

Thanx shameem. we are heading in the right direction now.

still checking if anyone else is running an electronic timing retard for their boosted engine, and just need to confirm wires used.

[shameem]

The disty hall sensor wire color codes are Violet/White for SGC (cylinder identification) signal and Green for SGT (crank angle) signal. SGT is probably what you want to use....

[RS_OBD'oh_2]

Looks like I need them both. Thanx again, you ROCK!

[RS_OBD'oh_2]

Ok, finally got my mx-3 wiring diagram shop manual the other day. It's for a 95, I own a 96 incase you didn't read the topic. It seems as tho the rs, be it soch or doch has the same ecu pin outs. However, my 96 does not totally match up. Here is a bit of what I found.

Elec Manual

2Y | 2W | 2U | 2S | 2Q | 2O | 2M | 2K | 2I | 2G | 2E | 2C | 2A
Y/R | L/O | Y | V | R | LG/B | L/W | LG/R | Y | V/W | G | B/LG | B/O
--------------------------------------------------------------
L | W/V | Y/W | LG | G/O | P/B | R/L | G | W/O | O/L | B/LG | B/L | B/P
2Z | 2X | 2V | 2T | 2R | 2P | 2N | 2L | 2J | 2H | 2F | 2D | 2B

What I seem to have is as follows: (E) Is empty

(E) Y/R Y (E) L/O W/P W GY L/R V/W B B/O B/LG
_______________________________________________
(E) L Y/W W/P (E) GY O (E) G/O L W/G B/P W/R

So, now I'm not too sure how to count these, being as though the 1st slot is empty. And few of the colours match up as well. I'm guessing that (on my ecu) the fuel injectors are still pretty much the same, being: Y/R for inj#3, L for inj#4, Y for inj#1 and Y/W for inj#2

My MAF signal would have been (elec manual) 2O or LG/B. Would I be correct to assume that on my end it should be:W ? (just counting over 5 spaces to the right)


Things are getting a little messed right now. So, any help at all would be great. Looks as though I have no choice but to abandon the color codes, but I'd rather not guess at the pin outs.

Thank you.

Edit: sorry about the spacing... kinda hard to read at first

[RS_OBD'oh_2]

I think I may be solving my own problem here.. as staded in a reply by shameem, the 2G (V/W) would be used for timing. I still have a V/W in that position... as long as I count from right to left. So, to combat my own posts here.. my original thought of my MAF wire being (W), it should be W/P {it kinda looks pink could be violet}... does that sound right?

[shameem]

There are two options -
-one is to get 96 wiring diagrams from somewhere (they pop up on ebay from time to time or maybe borrow from mazda.....).
-other is to get 94/95 wiring harness (and ecu) and convert your ride into obd1 before messing with wiring color codes.

The painful way to do it is to trace each and every wire and see where it goes - just because they are the same color doesnt mean they do the same things.....

[lazzer408]

Hello. Do you need the ecu pinout for a 96? Is that what your looking for? I checked my OnDmand5 and I don't even show a '96 mx-3. Hit me up on AIM and I can probably help you. I have a '94 and will be installing an f/ic soon.
These are for '95. Sorry I couldnt screenshot them. The program wouldnt let me. I had to print and scan them. -doh-

[RS_OBD'oh_2]

Hey man,

Ya, the 96 is vastly different when it comes to the ecu. Being it's only made in Canada in 96 and it's OBDII there are issues finding the wiring diagrams. I've hit up a few dealerships around my area and they don't even have them.

My ecu is a 3 plug. I started to "tone" out the pins using my telecom toner, set on continuity... didn't get very far... only tps and maf. Probably could have finished by now if I stuck to it.

Great to hear that someone else will be using the f/ic. It totally changes the meaning of "piggy back"

What set up do you plan on running?

[lazzer408]

I have the 323 mani and a turbo off a Probe. Same IHI vj-11 rbh5? as far as I know. I used the Probe 280 injectors to get a bit more fuel. I don't have an intercooler yet and I'm only running 5.5lbs with the timing backed off a nudge. So yeh. It NEEDS the f/ic. I run the EMS in my Miata now and I love it. I checked into the schematic and couldnt find anything either. Do you think there's another car that might have that ECU like a 323 or Protege or something?

[RS_OBD'oh_2]

I've tried to google the ecu part number B6gd 18 881B.. or whatevere it is. No matches. I think it might be used in the Euro mx-3's but I'm not too sure. I found a German site where you can buy the ecu's but I can't read german so.... ya.