start button doesnt work. - Yamaha ATV Forum
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start button doesnt work.

This is a discussion on start button doesnt work. within the Yamaha YFM350 Raptor/Warrior ('87-Present) forums, part of the Performance /Technical category; hopefully someone can help me out. basically, the battery is fine. I can jump the solenoid and the bike starts right up. anyways, I thought ...


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Old 02-03-2012, 09:40 PM   #1
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Default start button doesnt work.

hopefully someone can help me out.

basically, the battery is fine. I can jump the solenoid and the bike starts right up.

anyways, I thought it was the starter solenoid that was bad. I replaced it and it still doesnt work. So i figured it it was the actual button. I Replaced it and it still doesnt work.

after this, i pulled out my test light and my laptop. I found people talking about the main fuse. Well I found mine to be bad. I replaced it (which it did fix alot of the other issues with the bike) but the button still doesnt work. I found that its not getting power to the low current side of the relay (ground is good). I also checked the button (red wire) and it goes give power when pushed.

where should i go from here?
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Old 02-03-2012, 11:15 PM   #2
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It could possibly be a bad nuetral sensor.. If the nuetral light is not coming on try grounding the wire that goes to the nuetral sensor by the foot shifter.. If this is the problem, the starter button should work with that wire grounded.
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Old 02-04-2012, 07:17 AM   #3
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tried that and it didnt work. but fwiw, my neutral light does not work.
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Old 02-04-2012, 08:24 AM   #4
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95sw,
I looked up a 91', I'm not sure what year your machine is. Your start button should send ground when you press it. You should have a ground signal on the Red/white wire from your start button to the soleniod. The blue/white at the soleniod is power that comes from the inhibit relay. The inhibit relay needs a signal from the CDI to let the machine start. this is a ground signal on the yellow/black wire. My guess is you're not getting a signal from the CDI because of a safety switch. Just jump the Brown and Blue/white wires at the inhibit relay and as long as you're getting ground from the start button it should start. Using a test light for this kind of troubleshooting can be tricky because your light may light up from the voltage passing through the soleniod and not because there's power there. In other words, you may not have power at the button, you may be seeing the power coming into the soleniod on the blue/white, traveling through the soleniod coil and then up the red/white to the button. It's not as complicated as it may sound, start at the button, look for a ground. If you're not getting a ground signal out that's your problem. If you are getting ground out of the button, it's your starter inhibit relay. hope this helps you.
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Old 02-05-2012, 01:44 PM   #5
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i need to update this.
I took it out yesterday and the neutral light does infact work now. everything works except that stupid button! lol

carson,

thanks for the info. that helps alot! ill try to mess with it and see what happens next
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Old 02-05-2012, 05:44 PM   #6
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SW, Like I said thats from the 91' diagram so use with caution. If the colors look right and all use it. If your unit is different get me more details and I'll look up your exact model. I may be able to email you a diagram, if you need it PM me and I'll hook you up.
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Old 02-06-2012, 10:12 AM   #7
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Sw, I just noticed on the new units (I'm guessing 04 and up) the start button does supply positive voltage, not ground so I'm pretty sure most of the info I supplied you will be wrong! sorry. What year is your machine? I can post a diagram of your start circuit for you that may help you.
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Old 02-11-2012, 12:12 PM   #8
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i have a 94. so it still shouldwork.

I tried bypassing it and it still didnt work. so i need to spend a few hours and really mess with it
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Old 02-11-2012, 01:50 PM   #9
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We worked on a grizzly 600 yesterday that was the worse wiring mess I've seen in a while. I looked up the 94' for you. Brown wire at button should be positive from the key. Red/white wire from the button sends positive voltage to the inhibit relay. that voltage passes through the relay and turns to a blue/white wire that goes to the solenoid. The black wire at the solenoid is chassis ground. The inhibit relay is operated by the CDI through a ground signal on the Yellow/black wire. The CDI has to know that the machine is not in reverse as well, this is done by the black/yellow wire from the reverse switch to the CDI, it should have ground when not in reverse.
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Old 04-19-2016, 11:15 AM   #10
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I have an 87 obvi to my user name but I need help as well. Same prob..
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Old 04-20-2016, 08:40 PM   #11
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couldn't get mine to work on my 99 thought it was the solenoid also and replaced it still nothing just a faint click noise turned out the red wire that connects to the solenoid with the positive wire had been spliced and needed a new fork end thingy, works great now ... don't know if this is your problem but worth a shot.
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Old 04-21-2016, 10:26 AM   #12
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test the neutral safety switch, clutch perch switch. if those are good test to see if power is getting to the solenoid. set your meter to 12 volts, put the positive lead on the small power wire on the solenoid and the neg lead on the neg lead of the battery and hit the button you should have battery voltage on the meter. let me know how that goes and we will go from there
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