S2000 Under The Hood S2000 Technical and Mechanical discussions.

Building you own ISO OBD-2 cable

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Old Oct 22, 2002 | 07:52 AM
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Default Building you own ISO OBD-2 cable

Has anyone done it? I am going to do it, but I wanted to see if soemone is from the school of "been there done that".
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Old Oct 22, 2002 | 08:37 AM
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If you have the pin diagrams and the connector is attainable, building cables is pretty trivial.
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Old Oct 22, 2002 | 08:55 AM
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Agreed... I am having a b@tch of a time sourcing the J1962 OBD2 male connector. I would prefer to crimp and not solder. I would love to source one with an RJ45 out. I emailed the guy from obd-2.com and he doesn't sell jsut the cable.

I don't want to fund a group buy. Most of these companies require that you buy the OBD-2 J1962 connector in bulk.

If I could get some people who are interested I would be more than happy to sponsor a group project. NOT A GROUP BUY. I am not nor do I want to become a commercial entity

The reason for needing someone to sponsor a group project is so that we can have someone manage the items to meet the minimum requirements to just purchase the items. Which is the only way I have found to buy the said items.
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Old Oct 22, 2002 | 04:41 PM
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Have you seen this web site?

http://www.scantool.net/order.htm

or

http://multiplex-engineering.com/products.htm
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Old Oct 22, 2002 | 08:29 PM
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http://www.obd-2.com/

Why not just get the harness and software (with updates)?

Many here use this set-up and it performs well.......

Utah
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Old Oct 22, 2002 | 08:40 PM
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I just wanted the fun of building a kit...

OBD2 uses the AT set of commands in an ISO standard for which I have intimate knowledge of. It works just like you were writing a script for a modem bank.

I figured that building the cable with rs232 converter would be a fun project. It is a simple PCB layout.

I am not knocking the setup from obd-2.com... it rocks. I am only doing this as a hobby project.

All parts to do this is <$20 That is only if I could buy one item at a time

My ultimate goal is to interace it with my pocket pc.

The scantool site should sell the j1962 shells in quantities of 1. I will email them and see.

It looks like the multiplex site with sell the shell and connectors in quantities of 1 but you need a $50 minimum order.

Just a project... thats all.
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Old Oct 24, 2002 | 03:22 PM
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I don't get it sorry but why do you guys need an OBD2 connector? Our ECUs are OBD3 correct? Or did you guys go out and buy new ECUs? Sorry for the dumb questions but i was thinking of buying an OBD2 ECU and splicing it into the wires. Thanks
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Old Oct 25, 2002 | 08:27 AM
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[QUOTE]Originally posted by MadSp33d
[B]I don't get it sorry but why do you guys need an OBD2 connector?
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Old Oct 25, 2002 | 09:29 AM
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Mike, when I get my ODB-2 connector back, I'll take a pic of it, so you can see the way it was done. RS232 connector on one end and the ODB2 connector on the other (or whatever its called), and a RJ45 cable connecting the two - so you can basically string it to your PC in house if you don't have a notebook.
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Old Oct 25, 2002 | 09:44 AM
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Thanks guys... what I am interested in is that there are suppossed to be some electronics in the J1962 (obd-2) connector.

I am at work so I can't go into details, but basically the protocol (ISO) that our S2K's speak is close, but not 100 percent RS232 (serial). There needs to be a converter to "clean up" the signal for reliable communications and to prevent sensative serial ports on laptops from being damaged.

more later if people r interested
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