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Old 08-07-2014, 03:01 PM   #4
JFP in PA
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Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,614
Quote:
Originally Posted by Gary_d View Post
JFP: I don't expect an answer from you because you'll be insulted but, you're telling me to do what I've already done. Thought maybe I'd get an insight into where to look next or which wires to test.
No, I don't get insulted, but I did tell you exactly what the Porsche OBD II diagnostic's manual indicates are the probable faults. I did not offer to reproduce the wiring diagrams, as that would constitute a violation of both the forum rules, and an infringement on PCNA's intellectual property rights.

To test the circuits involved, you need Porsche special tool 9616 (pin out box) and need to follow about three pages of specific tests covered in the OBD II diagnostics manual. Very few individuals have access to the tools and reference sources involved, so detailing everything covered in the manual (which would be a similar violation to those mentioned above) probably would not have helped you very much as they do not get into wire identification during the testing procedures, but utilized the pin reference numbers in the special tool 9616 pin out box to complete the tests.

I would suggest you get access to a Bentley manual for the car and try tracing the wiring from the wiring diagrams in the back of the book, which should allow you to identify and test the wires and circuits outlined in the possible fault causes list I provided.
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