Reply To: GV650 EFI Wiring issues
Hey, the link below:
Wiring Tables – GT650 / GT650R EFi ECU Pinout / Wiring Diagram & Speedometer
It may say GT650 , but considering you have a 2010 model as he does, the GV650 does share most of its similarities with the GT650, so use that link to look in to the wiring diagram Chris has made in the other post and let us know if it helped ?
Have you also stripped the harness down to find out where this mystery black wire goes ? Without pictures i am not able to verify what it does as Hyosung uses a lot of black wires in different places even as much as a horn! A solid black wire “could” be the fuel pump (as you said it is on a relay?) but again we can’t confirm until we trace it apart
There should be power going to the coils to spark? (Assuming the bike spins when pressing “start”) , also does the fuel pump prime nicely at all ?
I won’t lie , I have NOT dared myself to take apart a daewoo ECU plug as you said the harness or ECU can’t be ordered anymore , however, i was religious to use the “air duster” or compressed air” on the ECU itself (no liquids!) and also the harness plug
The harness = I used contact cleaner on every socket found on the bike, then compressed dry air on the smaller sensors such as injectors , lambda etc ,
The harness is the only thing that got soaked wet with contact cleaner but i let it dry overnight indoors to be absolutely sure (winters can get very damp outside here in UK, so best to do stuff in a dry area that’s warm) , you’re about to enter Spring season? So i will just assume outdoors are OK for you over there!