This is a 6 cyl SFI model. I'm trying to figure out how to do a basic diagnostic on this car. I know with Most GM's of the early 90's, you can short the pins A and B of the 12 pin connector under the dash. Then turn the key on, and the engine light is supposed to blink indicating any error codes.
I found the 12 pin connector. Problem is, only 3 pins actually have wires running to them. There is no connection to the B pin, a nd therefore, no way to short pins A and B
Here is a picture of what I am talking about at.
I also found a connector under the hood. This is a 10 pin connector with
9 actual connections.. You can see this one at.