i need help on how to check my ecu code i have a p28 on my 89 crx si but has no light so i need to no how else i can check it

 

how many treads are you going to make with the same ??'s... what harness are you using for obd0 to obd1?

 

my crx si harness

 

ummm try again. the crx si harness is obd 0 thus will not plug into neither a P28 or p72 which are obd 1

it has already been listed for you, there is a plug in the engie bay. small green or yellow plug cover, mine is by the windshield resivior put a paper clip in there to jump the 2 wires and count the blinks on the light.

better yet, go read the FAQ section at the top of this thread all this info is in there

 

I HAVE THE CLIPOVER ON MY HARNESS WHICH WILL LET ME PUT ON AN OBD1 ECU

 

why are you yelling? you make my head hurt...

 

on your 'clipover' (or conversion harness) there should be a wire that you will ground to the car's body (on a bolt or unpainted surface) and then you check engine light with turn on and flash. Count the flashes for your codes. Long flash=10 and short flash=1. Add em up and you've got your code. If you have multiple codes then it'll start flashing the lowest number and go up numerically. It'll then reflash them all over again. On my conversion harness the wire is pink I believe. They're all different depending on who made it though.

Be careful grounding out any ole wire though you may find a positive wire and can fry your ecu. If you got instructions with your harness it should say in there, hopefully.
Good luck!

 

THATS THE PROBLEM I DONT NO WHICH ONE TO GROUND