On Board Diagnostics

[Socalerv]

Have a 1990 so I assume I have a OBDI. Is this function defined in any of the manuals?

I have read strings explaining repairs of the INF Rest that requires wires to be jumped to receive codes and reset. So that leads me to the question what information is available from the OBDI?

I asked a friend to bring his scanner over and plug it in, he told me he could not read it. If there is valuable information stored here what type of scanner should I buy and what do you think of his scanner not working on my car.

I come from the old gas + spark = engine runs days so electronics will be a challenge for awhile.