what wire to I ground out on my ecu to check my cel? need to know asap
thanks

 

you dont ground any wire. there is a small blue connector behind the center console near the bottom. (maybe some one will post a pic) that you just jump with a wire. then you turn on your ignition and count the number of times the check ungine light flashes

 

nope that doesnt work..the only light that flashes is my 4ws light. The shop I took it to grounded a wire to get the cel code. it was on the ecu though. I just dont know what wire, and I cant take the car there cuz it wont make it.

 

Hey mman, where is the connector that you are checking?? I need to check my 4WS light.

 

Find your ECU (behnd the passenger side kick panel. Look for a green connector looking thing (it's green in the civics, not sure about the ludes). Take a paperclip and short out the 2 connection points on that plug. Do this with the car OFF! Once you have the paperclip in, turn the car on and watch the CEL. long blinks mean 10's, and short blinks are one's. For example you'll get 2 long blinks, a break and then 7 short blinks. Tells you that you have error code 27. Easy as cake.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CHK4TIX &raquo;</TD></TR><TR><TD CLASS="quote">you dont ground any wire. there is a small blue connector behind the center console near the bottom. (maybe some one will post a pic) that you just jump with a wire. then you turn on your ignition and count the number of times the check ungine light flashes</TD></TR></TABLE>
That works for my 93 VTEC.

 

Do you have to start the car up or do you turn it to the key postion just before the car starts up???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AndyD &raquo;</TD></TR><TR><TD CLASS="quote">Do you have to start the car up or do you turn it to the key postion just before the car starts up???</TD></TR></TABLE>

Just turn the Key to the on position before it starts.

 

well I found the wire on my ecu...turns out to be a code 12....egr....oh wellonce the car runs good Im gonna have to replace that again

 

can anyone confirm that for a lude the plug is green? i looked today and i could not find mine..... this plug will ahve nothing plugged into it right?

 

wow. I see you searched, but you picked the wrong one man, this is years old. The information is under "CEL" in prelude archives, I'll give you a link or two:
https://honda-tech.com/zerothread?id=1182200
https://honda-tech.com/zerothread?id=1110689
https://honda-tech.com/zerothread?id=1088029
the short answer to your question is no. It is blue. and it will have nothing in it.