OK. I got it to work (I wasn't holding the button for several seconds first...). I have a code on terminal 6 (supplemental restraint, code is 8), but when I tried to get to the fuel diagnostics socket (2), it is empty. Just an empty hole, no post. 6 and 7 are the only terminals with posts in them (DOH!). I'm not seeing any wires laying around that were pushed out (or fell out, or whatever). Is there any other means of diagnosing? Or am I stuck with a halfassed diagnostics box? Thanks!

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1989 300E 144K