kcvi3tstyl3

I know that you are not able to use a scanner to read the CEL on a vehicle when you have a jumper harness that converts your OBD ECU's. SO how are u suppose to know what codes your car is throwing?

PLease let me know what Im suppose to do.

thanks

MonkeyMagic

urmm... the same way you normally do

(i didn't even think of the scanner.. jumping the 2 pin plug is second nature)

kcvi3tstyl3

Will that work? I never used the 2 pin plug method because I have always had a scanner.

shoklid

2 pin doesnt work with my jumper harness im running a obd2b ecu on my obd2a civic and cant get my codes either so im replying so i can read what ppl say about it. cause i cant figure it out either.

kcvi3tstyl3

So if the 2 pin process and the scanner tool wont work, how do u read the CEL codes and what else is there to do?

MonkeyMagic

ground the wire (if it is there) for pin d4 (on obd1 ecu). your check engine light will start dancing out what the problem is.

if there isn't a wire there... try a paperclip and a piece of wire for extension.. just don't hit adjacent pins or the brake switch, knock sensor, or vtec pressure switch may go 'wtf mate?!' depending on which you short to.


because you bought a cheap jumper harness that didn't wire up one wire

tdbhonda

my car is obd2a and i have it converted to obd2b and i can check the codes with a scanner and a wire

MonkeyMagic

of course... its still obd2.. whats your point?

313rdking

im in the same delema... i got a 90 civic and it has a 00 b16 wit a jumper harness... and it doesnt have the service plug... but i was told that on the jumper harness are wires to install a switch to put in diagnostic mode... but which wires... also i want to trace some wires back to the ecu but i need a diagram for the ecu...