i need to find my diagnostic plug on my 91 crx si. i cannot seem to find it anywhere. someone said i cant do a jumper wire test on this model? i have a diagnostic computer should it just work or i need some foreign software?

 

It should be under the dash next/under the glove box. it should be a green plug.

 

the only green plug i can find on the whole thing is under the hood by what i THINK is my fan relay idk. but thanks ill look again

 

ef's did NOT have a diagnostic plug...the code was read from the blinking light on ecu...you'll haev to add one if you have gone K or read from k pro