Curvy not starting, faulty sidestand switch. Can it be bypassed?

Curvy not starting, faulty sidestand switch. Can it be bypassed?

So I tried bypassing, by shorting the feedwires (G) & (BW), of the faulty switch which I've removed. The bike still won't start. I'm holding the clutch, yes I've checked the clutch switch and was found ok, the kill switch is ok and the starter switch checked ok. I've also checked the starter relay according to Haynes and indicator/stand relay also found ok.

Checking the electrical manual that someone posted years ago on this site I found out that there is an additional diode in he stand switch. Maybe that's why simply shorting the feed wires won't work. Has anybody removed the switch successfully. Mind this is a temporary fix untill I receive a replacement.

[Dave20046]

I THINK it's the orange and orange and white wire coming out of your relay,( but I'm getting a twinge that that's completely wrong and that orange & white is infact your live ignition wire... so don't snip anything on this post alone.). Would be a case of cutting them and twisting them together. If you fancy this and no one else can advice (YC?) then I can always nip out to my bike and dismantle it to double check for ya.

[Spiderman]

i'm assuming you've checked all your fuses too?

Yes, first things checked were the fuses. The thing is, I'm sure that the stand switch is a gonner but I'm afraid that even after replacing this the bike still won't start. Can't understand what that diode is doing inside the switch. It seems to be part of a complete circuit. I'm finding it difficult to source a new replacement. Other option is to buy a used newer switch off a pointy but I'm not sure if they're the same part number?

[Spiderman]

http://fiche.ronayers.com/ that may help you with part numbers

Thanks mate...

Off to take a look...

Great site thanks again.

Seems like the curvy (#37840-19f00 Omron) and pointy (#37840-16G00 Omron), have different part number for this item.
They look the same but better not chance it.

First off, DO NOT cut the orange-white wire! That's you're live ignition feed.

The sidestand switch won't stop the bike from turning over if it's in neutral, so I'd say it something else. Is it turning over and just not firing or is there nothing?

I cut the sidestand switch out of my curvy and soldered the wires* together with no problems as a result. You can bridge the connection at the connector block with a paper clip to see if that's your problem before cutting it out if that's not the problem.

So what happens when you press the starter button?

*[EDIT]: That's the two wires going into the green connector block (relay side rather than switch side, but I guess you knew that already)

[Spiderman]

No worries, glad it helped a bit.

Originally Posted by joshmac

The sidestand switch won't stop the bike from turning over if it's in neutral, so I'd say it something else. Is it turning over at all and just not firing?

And he's right of course. D'oh, why didnt i mention that?

*goes off to kick himself for that one*

Thanks for your replies and suggestions guys.

Joshmac, you're right, when in neutral gear selection the sidestand switch is not required and only when shifting to first gear and the switch is still off does the bike stall. I forgot this at the time and having checked all the circuit and found everything ok except for the sidestand switch I got confused and started to blame it as the culprit. In fact the bike was tested always in the neutral position. After two days of stripping the bike from every plastic to get to the harness and components the fault emerged as an intermittent switch in the clutch lever. I've now removed the switch and cleaned it's contact thoroughly and the world is a better place. The terminal to the stand switch was temporarily shorted untill I receive a replacement from fleebay and the bike is starting everytime when before there wasn't a click from the relays.

Some info to anybody reading this.

The manual mentions that there is a clutch diode which is situated on the right hand side of the bike behind the seat just before the rear brake reservour. I've removed this whilst the bike was in neutral and the bike starts ok. I'm mentioning this as the manual suggests that it could be one of the faults leading to a non start.

You can eliminate half of the circuit fault-finding by actuating your starter solenoid by simply juicing the 12 volt sensor circuit on the starter solenoid. If that starts the bike you're left with clutch switch, fuses and small relay box found nearby the fusebox to check. If those components are ok check the harness.

If the bike starts ok whilst in neutral but stalls when you switch into gear then stand switch faulty.

If your neutral light is not lighting in your dash then the bike won't start with the stand switch open.

A question.
The service manual says that there's a diode inside the stand switch. I don't know what this is for and can only guess that it's a protection for a reversed battery. Anyone know more?

[Spiderman]

No idea about the diode, or diodes in general tbh, but glad you got it fixed and running again mate