intermittent problem 650

[dancerdave]

Bikes a 2017 650 which I've had for a month, 800 miles. Problem is bike cuts out sometimes when I am standing on the pegs. Anything less than 40mph and 3000rpm , screen is totally blank with no warning lights BUT when I sit down again it automatically starts and rides normally. Battery terminals good and it only happens when I'm standing. Was at the dealer today and they couldn't see anything wrong and of course the bike behaved itself there. Anyone here had anything similar or have any ideas?
ps I'm not activating the side stand switch when I stand up 

[Fat Rat]

It sounds like a poor connection that you are completing when you sit down?

[Gert]

As you say that you are not activating the side stand switch with your foot while standing on the pegs, which is the first thing that comes to mind. Is the fuel electrical connector plug correctly interlocked?

[oslin]

Agreed above, but also have you checked the wiring under the tank some riders have had chaffing on the loom where it passes over the frame at the back of the tank which has caused the engine and other electrical components to cut out.

[dancerdave]

Thanks fellas. I'll check the connectors and the loom but surely that's unlikely with the bike only having done 800miles. you never know though. Dealers solution was "don't stand up" 

[Gert]

Do you have a centre stand or swing arm stand, so that you can lift the rear wheel for testing purposes? If so, get the rear wheel off the ground and try simulate the riding position to see whether the bike cuts out with the wheel lifted or is it only while riding at a certain speed or over bumpy surfaces, etc?

[dancerdave]

The black box with lots of wires going into it which is strapped to the battery is I assume the ECU. This was sitting at a angle which could possibly be affected by up and down on the seat. I could not see any bare wires or loose connections. I'll get a ride on it tomorrow and report back. Fingers crossed.