View Full Version : Curvy starter not turning.
Hello all, I'm in need of some help with my 02 svs. This weekend I travelled down to cornwall and back (~400 miles) no immediate problems whatsoever (the lights flickered at one point but thought nothing of it as noticed no change other than that to the bike). This morning I go to start my bike and nothing happens...
Put key in ignition & turn (instruments light up and all lights are working), go to start the bike but nothing happens - engine doesn't even attempt to crank over. I started by checking all fuses including solenoid and they were all ok, checked battery and its fine, kill switch isn't on, then i bypassed clutch but still nothing happening. Using my extremely limited knowledge (guesswork?) i thought it may be starter switch so checked the connection and made sure it was secure. Still absolutely nothing though its as if im not pressing the starter at all. I've tried with stand up - didn't bypass as shouldnt make a difference to actually starting the bike as far as im aware. No idea if when the lights flickered on the ride back on sunday it shorted something or caused damage to the starter circuit hence why it kept running but wouldn't start?
any help would be greatly appreciated as i am completely stumped and don't want to take it in to a garage a) for cost b) would like to learn myself!
nikon70
03-09-13, 01:39 PM
you got a multi meter?
Sid Squid
03-09-13, 02:18 PM
Just to clarify; everything else electrical works, yes? If no, what else doesn't work?
Does the solenoid 'click' when you press the starter button?
If no, then the first check to make is whether the solenoid is being powered or not, check there's suitable voltage on the yellow/green wire in the four pin plug on the solenoid when the starter button is pressed, (and all the other conditions for starting are met - neutral, sidestand etc). You'll need to back-probe the connection as if you remove the connector block the entire bike's electrics will be dead. If there is voltage there the solenoid isn't functioning, if there isn't see below.
Can you bump start the bike? If yes, then the circuit up to the right switchgear is OK, as the supply goes to the stop/run switch and the output of that to both the ignition system and to the starter button. If it had failed before there it wouldn't run with a bump.
The circuit is: stop switch - orange/white wire - starter button - yellow/green wire - right switchgear connector block - yellow/black wire - left switchgear connector block - black/yellow wire - clutch switch - black yellow wire - left switchgear connector block - yellow/green wire - solenoid connector block.
nikon70
03-09-13, 02:20 PM
+1 try to bump it
Everything else electrical on the bike works. Absolutely nothing happens when the starter is pressed. Will check voltages as you suggest tonight when I am home and report back.
If that's the case it is the starter, remove it and strip it, clean it up they sometimes will work, else buy another.
Sid Squid
03-09-13, 11:11 PM
If that's the case it is the starter, remove it and strip it, clean it up they sometimes will work, else buy another.
Not necessarily - if the solenoid isn't being powered then the starter won't get powered either. OP hasn't replied on whether the solenoid 'clicks' when the button is pressed, if it doesn't then a diagnosis of a failed starter is a little premature to say the least.
Few little things that can cause this on 02 (assuming battery has charge). Bad connection inside switch housing (starter button) or between it and relay, turn signal relay, resistor inside ignition lock, clutch switch.
chezvegas85
04-09-13, 05:57 AM
I had this, went through everything with a multimeter, removed my spyball incase it was that...turned out the clutch bypass connector had come out a little bit. oops. On the brightside, it got rid of my spyball immobiliser! :smt082
Grant66
05-09-13, 11:33 AM
Had a similar issue on my 02 Curvey, starter switch was the problem and just needed the contacts cleaning.
Right I've tried testing the voltage and there is nothing on the green/yellow wire. However, can one of you give me a complete dummy/laymans guide to EXACTLY what I should be testing between as my electronics knowledge is pretty much non existent and I wouldn't be surprised if I had managed to balls it up. Apologies for being a complete dullard electrics is just not my area of expertise!!
Test green/yellow where it exits kill switch assembly.
Sid Squid
05-09-13, 09:16 PM
This list relies on there being no other electrical problems - clearly if all the electrics are dead it would be a waste of time investigating the starter system as something more fundamental is faulty, which obviously will cause the starter not to turn but not because there's a problem with the starter.
This is a complete listing of all tests on the solenoid supply, clearly one may dispense with some of them if tests made further along the circuit have already been made and proven good, but for clarity they have all been added to this list.
All tests done with ignition on, in neutral, clutch pulled. All connectors assembled and intact unless stated.
1. Remove the starter cutout relay, is the orange/white wire connector live?
Yes; go to 2.
No; fault lies in fuse 3 and/or wiring from there to relay base.
2. Refit relay, backprobe orange/black wire on relay base, live?
Yes; go to 3
No; fault in relay and/or connections.
3. Remove the right switchgear connector, is the orange/black wire on the loom side live?
Yes; go to 4.
No; orange/black wire in loom from relay to right switchgear connector broken. See switchgear tests below.
All further tests require the starter button to be pressed when testing.
4. Reconnect right switchgear, backprobe yellow/black wire on loom side of connector, live?
Yes; go to 5.
No; fault is inside switchgear, connector or wiring from connector to switchgear. See switchgear tests below.
5. At left switchgear connector is the yellow/black wire live?
Yes; go to 6.
No; yellow/black wire between left and right switchgear connectors on loom broken.
6. At clutch switch test for voltage at both wires, which are the same colour, one should be live.
Yes; go to 7.
No; left switchgear connector/wiring broken.
7. At left switchgear connector loom side backprobe yellow/green wire, live?
Yes; Go to 8.
No; left switchgear connector/wiring broken.
8. At solenoid backprobe yellow/green wire, live?
Yes; go to 9.
No; yellow/green wire/connectors from left switchgear to solenoid connector broken.
9. Check continuity from black/white wire on solenoid connector to battery negative.
Yes; faulty solenoid.
No; broken black/white wire.
Switchgear tests:
Remove right switchgear connector, remove right switchgear. Identify stop/run switch and starter button connections in switchgear.
1. Check for continuity between switchgear connector orange/black wire and same on stop/run switch.
Yes; go to 2.
No; orange/black wire and/or connectors broken.
2. With stop/run switch at 'run', check for continuity at switch connections - orange/black connection to orange/white connection.
Yes; go to 3.
No; stop/run switch faulty.
3. Check for continuity between orange/white wire on stop/run switch and same on starter button.
Yes; go to 4.
No; orange/white wire and/or connections broken.
4. With starter button pressed check for continuity at switch connections - orange/white connection to yellow/green connection.
Yes; go to 5.
No; starter button faulty.
5. Check for continuity between yellow/green wire on starter button and same at switchgear connector.
Yes; good!
No; yellow/green wire and/or connections broken.
wideguy
05-09-13, 09:22 PM
Sid, you're a hero!
Matt-EUC
06-09-13, 11:03 PM
Sid, you're a hero!
Don't tell him that! He'll start to think he's useful :)
Sid Squid
07-09-13, 12:43 AM
Useful - me?
How very dare you! I ain't ever been useful and I ain't about to start now!
Matt-EUC
07-09-13, 08:46 AM
and I ain't about to start now!
Neither is this guys bike, with you helping XD
Sid, thank you so much for this was really helpful. If our paths should cross the beer will be on me.
it appears that i have a faulty started button!
Sid Squid
07-09-13, 09:27 AM
Neither is this guys bike, with you helping XD
Shurrup bike murderer!
yorkie_chris
07-09-13, 09:50 AM
resistor inside ignition lock,
That will stop it from sparking, but it will still crank
Grant66
07-09-13, 10:04 AM
it appears that i have a faulty started button!
As I predicted, never underestimate the power of a random diagnosis based on little information from a long distance. :-B
Matt-EUC
07-09-13, 10:23 AM
Shurrup bike murderer!
Not murder, assisted suicide.
yorkie_chris
07-09-13, 10:30 AM
Not murder, assisted suicide.
Bikes aren't sentient enough for suicide, you've effectively kicked a spacker off a cliff.
Matt-EUC
07-09-13, 10:31 AM
Bikes aren't sentient enough for suicide, you've effectively kicked a spacker off a cliff.
Are you trying to say that my bike is mentally and physically disabled?
yorkie_chris
07-09-13, 10:33 AM
Are you trying to say that my bike is mentally and physically disabled?
Physically... it is now...
Mentally... well that would be the rider :mrgreen:
Matt-EUC
07-09-13, 10:34 AM
Physically... it is now...
Mentally... well that would be the rider :mrgreen:
You sir, are a horrible horrible person.
Sid Squid
07-09-13, 11:02 AM
I dunno - I think Chris has estimated the situation very astutely.
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