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Old 05-10-2010, 04:16 PM
  #166  
Lizard928
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Hello Andrew,

I have an early 87 (flip up wing etc) and it has different pinouts too.
That said I have not tried the ST2 on it yet but was expecting to have to re-pin the stock plug.

As to the EZK I have also run into this and believe that the board which gets in the way is useless and can be remove
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Old 05-10-2010, 04:26 PM
  #167  
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Originally Posted by Lizard931
As to the EZK I have also run into this and believe that the board which gets in the way is useless and can be remove
yup...dremel away! i may have pictures some where around here.

edit...

found this. PAGE 4


http://www.jdsporsche.com/faqs/PEM%2...0Issue%201.pdf
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Old 05-10-2010, 04:35 PM
  #168  
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The attached is from the JDS web site:
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Old 05-10-2010, 04:47 PM
  #169  
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Originally Posted by Andrew Olson
Ran into a a couple interesting problems this weekend and wanted to see if there was any sage advice.

#1. (Sorry no pic) When I tried to install the PEM into the EZK of an early '87, I couldn't re-assemble the EZK. THere was an eztra PCB that prevented me from putting is back together properly. I was able to "slip" the boards and put it back in the case, but wanted to know other people experiences here.
Oh, that. Just whack away the offending bits, see pic. The only caveats are to use a vacuum to keep the debris away from the circuits, and make sure nothing gets shorted on the backside.


Originally Posted by Andrew Olson
#2 This was the first time I've tried the ST2 on an earlier car (87/88). When I plugged into the diagnostic port, I don't get any power. I was looking at the cable vs. port, and the pinouts don't seem to match. Wondering if this is an anomoly with the cable or the car? I'm going to try it on my '87 this week (if the weather holds) to see if it works in that car.

In particular Pin #5 does looks to go to an empty socket.
According to the WSM, pin-5 is supposed to be +12v (bus-30) for an '87 as well as '88.

Are you sure you are on the right socket? The empty pins are supposed to be 6, 7, 8. Also, you've got too many brown wires...

Here's my hatchet-job:
Name: IMG_1130-3.jpg Views: 267 Size: 137.6 KB
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Old 05-10-2010, 04:59 PM
  #170  
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Tony beat me too it
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Old 05-10-2010, 04:59 PM
  #171  
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Originally Posted by jcorenman
Oh, that. Just whack away the offending bits, see pic. The only caveats are to use a vacuum to keep the debris away from the circuits, and make sure nothing gets shorted on the backside.
Thanks... will do. Didn't see that page in the manual, but then mine is a bit old (ST1). Maybe I need to update my manual.


According to the WSM, pin-5 is supposed to be +12v (bus-30) for an '87 as well as '88.

Are you sure you are on the right socket? The empty pins are supposed to be 6, 7, 8. Also, you've got too many brown wires...
Pretty sure. This is the one on the LH/EZK (not the coding plug). Is there another plug like this down by the CE panel? The one pictured is not my car, just one of my cohorts. I'll check my '87 tonight.

Thanks guys. Will report what I find later tonight.
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Old 05-10-2010, 05:03 PM
  #172  
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Andrew,

More info here: https://rennlist.com/forums/928-foru...connector.html

Discussion of early 87's not having a diagnostic connector, but nothing about funny wiring. I don't know of any other 12-pin connectors in that neighborhood but I am thinking that is not a diagnostic connector...
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Old 05-10-2010, 05:06 PM
  #173  
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On the '88 MY both the coding and diag plugs are on the LH/EZK frame.

The coding plug is on the upper LH corner closer to the CE panel, the diag plug is on the lower RH.
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Old 05-10-2010, 05:15 PM
  #174  
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Originally Posted by jcorenman
Andrew,

More info here: https://rennlist.com/forums/928-foru...connector.html

Discussion of early 87's not having a diagnostic connector, but nothing about funny wiring. I don't know of any other 12-pin connectors in that neighborhood but I am thinking that is not a diagnostic connector...

Great! But I'm worried becasue my '87 is #0086. I have not even looked at the LH/EZK.

Originally Posted by the flyin' scotsman
Both the coding and diag plugs are on the LH/EZK frame.

The coding plug is on the upper LH corner closer to the CE panel, the diag plug is on the lower RH.
Yep. That's what I thought, and that's where I found it. The coding plug has 2 fewer pins too (I think) so they can't be confused. But that's not to say someone may have molested the diag connector in the past.

So, at least, does my 87/88 cable look right?
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Old 05-10-2010, 05:18 PM
  #175  
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BRB with a pic
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Old 05-10-2010, 05:26 PM
  #176  
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Just notice the pic from SeanR on the linked thread above.

Not the same as mine...

Sean's


Mine


Waiting on the tie breaker...
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Old 05-10-2010, 05:40 PM
  #177  
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Here's the diag port on my '88:
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Old 05-10-2010, 05:43 PM
  #178  
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Originally Posted by Andrew Olson
Just notice the pic from SeanR on the linked thread above.

Not the same as mine...
...
Waiting on the tie breaker...
Sean's picture was diagnostic-tester connectors, not the same wiring as the ST2 connection.

Your picture of your ST2 plug looks just like the ST2 connector that is plugged into our '88s4-- with pins 1, 2, 5, 10, 11, 12.

The problem is that your 12-pin female doesn't look like a diagnostic connector-- wrong missing pins, and all those brown wires don't look right. The coding plug is 8 pins, it sure as heck isn't that.
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Old 05-10-2010, 05:43 PM
  #179  
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Well isn't that interesting. Got a pic of your cable by chance, please?

EDIT: Delay that order...
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Old 05-10-2010, 05:49 PM
  #180  
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Originally Posted by jcorenman
Sean's picture was diagnostic-tester connectors, not the same wiring.

Your picture of your ST2 plug looks just like the ST2 connector that is plugged into our '88s4-- with pins 1, 2, 5, 10, 11, 12.

The problem is that your 12-pin female doesn't look like a diagnostic connector-- wrong missing pins, and all those brown wires don't look right. The coding plug is 8 pins, it sure as heck isn't that.
Ahhh... gotcha. Forgot about the spanner. But you're right, that female plug looks very different. Wonder why?

Looks like we need to go fishin under the CE panel to see if it's lurking back there, but I'm pretty sure this thing branched off the main harness - but then I wasn't really paying too much attention to it. It was in the right place, so I figured it was right. OK... will have to take a closer look in a couple weeks when I see the car again.

So what's the consensus on if you don't even have a plug, as I fear on my '87? Can we "create" one by tapping into the LH/EZK harness?
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