YBR125 Custom won't start

[Powderhead]

Hi,

I've got a 63-plate YBR125 Custom that won't start. It's been sitting outside under a cover for a few months.

I can't bump start it, and I can't start it with the kickstart. I've also connected the battery up to my car and that doesn't help either.

I don't think the battery is the issue. It turns over, but it just won't splutter into life.

The engine warning light gives 1 long and 9 short flashes, i.e. an error code of "19" - meaning "no signal from ignition to ECU".

Google tells me that it might be something like a loose connection in the ignition barrel or an issue with the connection between the switch and the ECU.

I've sprayed some WD-40 down into the barrel and tried wiggling and depressing the key as I hold the starter, but the damn thing still won't start.

Any suggestions of any quick things to check before I start tearing the bike apart checking the wires from the barrel to the ECU?
____________________
"Now at inspector level!"

[fatjames]

Strange that's it turning over if it's related to the ignition.
Can you pull the plug and see if it's sparking? If it is, then I would guess a fuel issue.
Might just be a vacuum in the tank, open and shut the filler cap and try again.
Nothing silly like fuel tap (or lack of fuel) or kill switch is it?

[Powderhead]

[ThatDippyTwat]

[fatjames]

Black with white is ECU to ignition.

Orange is ECU to coil / spark plugs. Probably worth wiggling both.

Wiring Diagram - https://ybr125owner.blogspot.com/2014/06/yamaha-ybr-125-electrical-system-wiring.html