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Answers to your questions...

4) Using a lead wire with alligator clips ground the No. 10 terminal of the self-diagnosis connector (behind the glove box)


I think this step is incorrect.
Just saying... so everybody gets the best information...
Always open to debating this or other topics.

(There was and FSB or something that outlines why the "Dealer Scam Tool" couldnt be used for tune-ups...because it grounded #10 pin.)

1989 5 door montero 3.0 auto
stock original Japanese
about 200k miles