Hi
How to check the code on 91 integra ? where is the euc and the lil plug is located ? Thanks

 

if u look under the passenger side dash, there will be a little connector w/female two plugs (or holes). use a paper clip or something that is a conduit for current to close the loop. then look at the engine light on ur cluster. the code will blink w/ the engine light.

 

Hi I did find the female plug under the pass. side doorpanel and I use the speaker wire and the engine light didn't blink or anything!

 

so...you put a speaker wire in there? try using a paper clip. u'll have to bend the clip to make it a u shape. put one end of the clip into one plug, and the other end into the other. u might have to have someone hold it in there. the code(s) should run.
the plug should be under the dash closer to the door side, but not under the door panel.

the ecu is under the passenger side floormat. take that out, pull the carpeting back from the side closest to the firewall, there will be a metal shield there, take that off and the ecu sits right there

 

does it work for odb 0 couse thats a 91 and its odb0 i didnt know if they work or not.