VFR800 Won't Start

[TinkerinWstuff]

Unfortunately I am on the road and do not have a gen6 electrical schematic with me. The VFR side stand is a simple open/close switch and does not operate any relay. Also, unlike Suzuki, and unless something changed in gen 6 (unlikely), the clutch switch does not have to be activated to crank - when in neutral.

So, when in neutral to get the bike to crank, we only need neutral indicated, a properly functioning kill switch (already verified), a properly functioning start switch (not verified), and a properly functioning starter relay (not verified). And of course all associated wiring connections.

Oh, an of course a working starter.

Most common component failure would be starter relay on this bike. Even that is rare and battery or connections are most probable.

[asp_125]

Jumper cable directly between the starter and the battery. That'll tell if your starter is good. I had a faulty starter on my Duc that was traced this way. Make sure it's not in gear!

[TinkerinWstuff]

Jumper cable directly between the starter and the battery. That'll tell if your starter is good. I had a faulty starter on my Duc that was traced this way. Make sure it's not in gear!

Good suggestion. Great way to narrow this down.

[Jmetz]

Thanks again all. I'll look into the suggestions when I get home.

[Jmetz]

And the winner issss........

Starter relay?

[mdub]

That is what I was about to jot dwn. Cool

[Penadam]

What do I win?

[Dr. Joe Siphek]

What do I win?

a BJ from JMetz

[Jmetz]

What do I win?

An order of Quaker Steak atomic wings.

Thank you to everyone that responded, I appreciate the info on things to check.

[grim]

a BJ from JMetz

Nobody wins with that award.

[Sully]

It's worky now?.. I really hate to see you ride our scoot all the way to Quaker Steak again.. 3 hours man.. that's a L O N G trip

[Jmetz]

Yeah kinda, I've gotta arc a spark until I can get over to get a new relay but she does start and ride. That's how dedicated to my bike night I am. I couldn't just roll up in a cage!

[Jmetz]

So... It's not the starter relay. Swapped a new one in and same result. Thought it was because I was able to jump the connections and she would start. All the fuses are good the wiring looks to be in good shape. Pushing the start button turns the lights off so that's works..

[longrider]

When I get home I will trace out that circuit and give a few suggestions. I am almost positive there are two circuits in the button, one to energize the starter and one to kill the headlight. I could still be your button but that is only one possibility.

[TinkerinWstuff]

When I get home I will trace out that circuit and give a few suggestions. I am almost positive there are two circuits in the button, one to energize the starter and one to kill the headlight. I could still be your button but that is only one possibility.

yes that is correct. it's a 4 pole switch with 2 NC and 2NO contactors.

[TinkerinWstuff]

[TinkerinWstuff]

Bank angle sensor, engine stop relay, engine stop switch, starter switch, fuse C.

at the miminum, a 12v test light would be priceless right now.

[Jmetz]

This is the starting system diagram. I'm not that great with electrical. So with this diagram:
relay is good
main fuse good
battery good
ignition switch good
I'm guessing that these fuses are in the fuse box and they are all good as well as any fuse I've come across
engine start/stop good
Starter switch ?
the rest of this stuff is all good



So how can I test the start button?

[Jmetz]

Bank angle sensor, engine stop relay, engine stop switch, starter switch, fuse C.

at the miminum, a 12v test light would be priceless right now.

The stop switch and relay should be good as the stop switch kills the engine and run position will start.

Where is fuse C?

Edit: nm all fuses in box are good.

[TinkerinWstuff]

fuse C in the main fuse box.

start switch wires you are concerned with appear to be yellow/red and black

[longrider]

The fact he is getting fuel pump prime rules out most of those items. I am really leaning toward the starter button, very simple test, while pushing the button you should have 12v at the yellow/red wire at the starter relay

[longrider]

The black is an internal connection between the kill switch and the start button, it also powers the engine stop relay and as it primes the kill switch is obviously good.

[Jmetz]

If I jump the relay connections she starts and runs just fine. Paul I'll see if I can check those wires.

[longrider]

I really think its the button. If it tests good (12v at the relay on the yellow/red wire) then the only other possibility is the diode. There are two diodes in the unit, one that lights up the light and one that connects the starter. It is possible for one to fail while the other still works but that is a real long shot.

I am heading home so I will be off line for a while