Hi to all. Finally got to the bottom of fueling issue in horizontal cylinder. Fault lies in no power going to the injector connector itself. With regards to this fault what might be the next step to resolve this ? Thanks in advance
Could be the yellow relay. This post shows an alternative compatible relay https://www.ducatiforum.co.uk/threads/yellow-relay-916-supersport-etc.86084/#post-1847207
Evening Chris. Thank you for the reply & attached link. May i ask if the relay operates independant injectors as the vertical injector feed operates as it should ? Thanks
These relays have two outputs ie 2 x pin 87. I think these supply each injector. It is a cheap part as well, so worth a try.
Is this relay in question by the battery as i have been swapping the 2 main underseat relays with no joy & both testing fine through Guzzidiag ?
Yes, it's by the battery. Left hand side if you're looking at the battery. Here is the wiring diagram. It's from a 916 but it'll do.
Doh ! Thank you for that information as i had been looking at the 2 underseat relays as possible culprits for injector feeds. Much appreciated mate
I'm starting to learn all about working on these bikes after many years of ownership & no troubles. Cheers mate
Injectors, coils and fuel pump are fed with a permanent 12v feed from the ignition relay. The control for these comes from the ecu by the way of a switched earth. If the rear injector is working, then it’s likely you’d be best starting at the loom on the throttle body or the MIL connector that hooks it up the the main loom. You’re looking at the 12v feed from the ignition relay, brown/white cable iirc and then the triggers from the ecu, the switched grounds.
