16-pin OBD plug for S2/RS2

[Vorsprung durch Technik]

I have ten female OBD plugs that are surplus to requirements. They have chassis / panel mounting points which make them perfect for the footwell location but you could also install in around glovebox or ashtray area as you wish.

The main advantage of these over the factory 2x2 plugs should be obvious for anyone who has ever needed to plug Vcds or a code reader into their car.

I am happy to sell them for what I paid plus cable and a token amount for wiring them up - they need a special crimp tool that most folk won't have. The raw kits can be found individually on fleabay for 3-4 quid but I am providing a made up cable that just needs wired up to factory loom positions. I will post "how to" instructions here of course. I expect something like 50cm cable length will suffice - anyone can shorten or extend from that.

I expect price to be in region of 8-10 quid including uk delivery but i need to confirm that.

Two of the ten are claimed already as follows -

01 - rjscotty
02 - newsh

Please add your name if interested and they will be allocated on 1st come 1st served basis. I will follow up with PMs for paypal and shipping address etc

Was looking forward to this but as of yet have not been asked for paypal payment or heard anything.Have you completed these?Cheers

[Vorsprung durch Technik]

They went like hot cakes then

01 - rjscotty
02 - newsh
03 - dahli7376
04 - macspring
05 - mac2226
06 - voursch sprung durch
07 - RS2junkie
08 - bluequattro
09 - MrG
10 - as2q
11 - sidrick

That's them all accounted for… pretty sure I have that 11th but thats the lot - I have a couple more saved specially for project vehicles (sshhh).

Was looking forward to this but as of yet have not been asked for paypal payment or heard anything.Have you completed these?

[S2central.net]

The S2 OBD is a subset / precursor to formal OBD2 comms. There are lots of OBD scanners that talk to older VW/Audi machines like ours but they have to support the correct protocols. Some code readers do not support all of the available protocols across the umpteen manufacturers. Try VCDS Lite on your 16-pin plug to make sure you lashed it up right.

The plug itself is pretty simple - K - L, 12V and 0V

[urS6Tom]

I don't want to split hairs about OBD vs official OBD2 compliance on such early cars as ours but yes the 4-way pinout shown in the 12V link is correct here.

I'm trying to figure out the extent to which the ODB output from our ECU is compliant with the OBDII standard (and therefore what basic information I could hope to be able to retrieve from my 1995 S6 using an OBDII scanner).

I noticed that the pin-out for the ODBII connector (SAE J1962) defines the K and L lines as:

7. K line of ISO 9141-2 and ISO 14230-4
15. L line of ISO 9141-2 and ISO 14230-4

So I suppose the question is, to what extent is our Motronic ECU compatible with those ISO standards? I found a bit more detail on what those standards mean in this pdf:

http://www.obdclearinghouse.com/index.php?body=get_file&id=1343

As an aside, I found a thread which shows that the 1995 A6 2.8 V6 was certified as OBDII compliant (although presumably irrelevant to this topic due to it having a completely different ECU).

https://www.scantool.net/forum/index.php?topic=3010.0

Cheers,
Tom

[AndyP]

This one from China for example - Item #: 271081807862

Meantime I shall make up a cable today for a guinea pig to try out before I shoot PMs asking folk for payment.

Thanks

[Mr G]

Hi Paul - if you by any chance find a 12th somewhere in your stash, can you I please have it. Else if there are any cancellations please put me in the queue after Henkjan

[Henkjan]

if by any chance you make more (or if people drom from the list), I would be happy to buy one

[S2central.net]

This one from China for example - Item #: 271081807862

Meantime I shall make up a cable today for a guinea pig to try out before I shoot PMs asking folk for payment.

[S2central.net]

You will find them on eBay for 3-4 quid as raw parts. I am adding cables and eyelets.

[AndyP]

If anyone missed out:

Molex Female OBDII Connector Housing p/n: 51116-1601
Molex Female Crimp Terminal p/n: 50420-8000

Available from??

[UrS4boy]

Thanks for clarifying that Dave.

I know it was obvious (duh) but I just wanted to put the two together in one post (the diagram and the finished product).

[S2central.net]

Thanks for clarifying that Dave.

[UrS4boy]

...Anyone using it in UrS4/S6 may need to extend the cables further to reach the fusebox eyelets as I cannot remember if the AAN fusebox is on same side of car as the driver.

RHD or LHD, the auxilliary relay panel with the black and white 2 x 2 is always on the driver's side.

So the wiring follows this layout:

[urS6Tom]

S6 2x2 location

Paul - here's the picture of the S6 2x2 points that you requested

[Vorsprung durch Technik]

I am not sure if you have a Check Engine Light (CEL or MIL) that is yellow and comes on when you first turn the ignition to run (before you hit start). If you do, you can use this procedure:

http://www.sjmautotechnik.com/trouble_shooting/ecuf20v.html#fcs4

"Mysteries" of the CEL/ Air Bag/Seat Belt warning light panel"

http://forums.quattroworld.com/s4s6/msgs/258624.phtml

Thanks for your stella help.I need it on electrics but definately a fascinating subject.My father now sadly passed was a electronics guru.I have his Osciliscope here, i wonder if it will come in handy and any of his majic might be within me given the right help from the experts on here and there seams to be quite a few

Cheers