MX-3.com

Ok guys this how my ECU looks
http://cgi.ebay.de/Steuergerat-Mazda-MX ... 3ca55baea7" onclick="window.open(this.href);return false;
This is OBDI or OBDII?

Three yellow lines are coming to the ports.One port of the ecu is not connected.

Thank you..

The title of the listing says it's for a 94
The product description says it was pulled from a 95

94 and 95 were 1.6 DOHC

It's ODB-II

I have and ODB-I ECU from my 92 RS (Manual) if you need one...

4 plugs usually means OBD2. I googled the pn and got a pile of off shore, screwed up written web sits. Check with Mazda for the correct pn.

Demonic1 wrote:The title of the listing says it's for a 94
The product description says it was pulled from a 95

94 and 95 were 1.6 DOHC

It's ODB-II

I have and ODB-I ECU from my 92 RS (Manual) if you need one...

I have already the ecu in the car.I just wanted to know what type it is.
It's strange cause i asked a mazda mechanical here in Greece and he told me that all mx3 here are obdI
My mx3 is 1997 model.And the ecu which i have is exactly as the pic shows.
If he is wrong...HOW the hell he calls himself an engineer???

The OBD was taken up for emissions controls. I'm not sure how well it translated to Europe, but I'd think they'd have the same setup on them. I mean why would Mazda put different setups if it required all those extra different parts.

The quickest way to tell would be to find the Diagnostics connector..

This is and OBD2 connector... the OBD-I is .. simpler
Also, OBD2 were required to be mounted within 2 feet of the driver. Unless the company filed for an exemption.
***edit***
Here's the OBD-I connector for my car (under my hood, behind my battery)

And a picture of the ECU connectors for my (pre-BP) B6 5speed ECU.

The Automatic had 3 connectors, one was for the transmission.

Thank you for your information..!!

Demonic1 wrote:The title of the listing says it's for a 94
The product description says it was pulled from a 95

94 and 95 were 1.6 DOHC

It's ODB-II

I have and ODB-I ECU from my 92 RS (Manual) if you need one...

Your post implies that 1.6 DOHC's were all OBD-II, this isn't true. In North America, '96 and some '95's were OBD-II. And there is speculation that European models never went to OBD-II.

Someone should KLZE that John Deer.

Yeah I guess it could be read that way.
Apologies.

Best way is to just hunt down the connector on your car...

Daninski wrote:Someone should KLZE that John Deer.

seriously... in the 4cyl forum? I was thinking BPT

so if its under your hood behind your battery its an OBDI? not OBDII?

If it is true that all MX-3s were built in Japan, I find it hard to believe that they would buildl some OBD2 cars for north america and other places, and not just make them all OBD2 when the switch started. I mean I don't know that they did or didn't, it just seems like that would be a costly and organizationally challenging thing to do.

96chris wrote:so if its under your hood behind your battery its an OBDI? not OBDII?

Not specifically. The standard stated the OBD-II connector was to be placed within 2 feet of the drivers position. But if the manufacturer filed for an exception they could put it anywhere.

I've never seen an OBD-II connector or its placement on an MX-3. But it is a standardized connector (see top photo in my earlier post). If you have that connector, it's OBD-II. If you have the second connector like me (located behind your battery) it's OBD-I.

the OBDII connector MUST be easy to get to... never hidden, unless clearly noted on the cover.

Demonic1 wrote:I've never seen an OBD-II connector or its placement on an MX-3. But it is a standardized connector (see top photo in my earlier post). If you have that connector, it's OBD-II. If you have the second connector like me (located behind your battery) it's OBD-I.

Not to be cheeky. But as in your post above, this post implies something that is not true. The OBD-II MX-3's have the OBD-II port in the cabin, as well as the diagnostic connector under the hood. Therefore, existence of the diagnostic connector does not mean OBD-I