System check fail

Tiny
CHUCK TAYLOR2
  • MEMBER
  • 1995 BUICK RIVIERA
  • TURBO
  • AUTOMATIC
  • 136,432 MILES
My car does not recognize any code reader. I cannot perform any type of diagnostic.
Friday, January 27th, 2017 AT 6:52 PM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,916 POSTS
Use a paper clip to connect terminals "A" and "B" together. Turn on the ignition switch, then count the flashes of the Check Engine light. Those two terminals will be the only two right next to each other in one corner of the diagnostic connector.

Here is a link to the page that tells how to read the codes, and what they mean:

https://www.2carpros.com/articles/buick-cadillac-chevy-gmc-oldsmobile-pontiac-gm-1983-1995-obd1-code-definitions-and-retrieval-method
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Friday, January 27th, 2017 AT 6:57 PM

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