My bizarre & seemingly unsolvable cruise control issues...hoping for new ideas.

Saint rob

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I used the term because it's a solenoid type relay, perhaps it's not a word used much anymore. It's because it uses a solenoid to close the contacts under energisation.
Sam have you remained problem free since replacing the relay Almost a month ago?
This has started to happen with me, so tonight I too initially stripped the front switch and upon reassembly and testing discovered that the relay is sometimes slow to "let go" with the fault only seeming to occur when that happens.
 

samstoterau

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May 7, 2020
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Sam have you remained problem free since replacing the relay Almost a month ago?
This has started to happen with me, so tonight I too initially stripped the front switch and upon reassembly and testing discovered that the relay is sometimes slow to "let go" with the fault only seeming to occur when that happens.
Sorry for the late reply. Ok, so here's what happened, I noticed the relay wasn't releasing so I shook the relay and the problem seemed to subside (for about 20 minutes). I noticed that they problem still remained and that the failure to deenergize only happened with the front brake switch (so not the relay). The back bake switch did not cause a failure to deenergize. This narrowed down there problem to the front brake switch assembly only, as if the relay were bad, the rear brake switch would've caused it to stick also. So what I did to fix the problem was, removed and disassembled the front brake switch assembly. There are two micro switches, the left is the brake switch, the right is the cruise control interrupt. The fault caused is the brake switch not uncontacting before the cruise control interrupt (code 90). I removed the little blue switch boot and sprayed the inside of the brake microswitch with electrical parts cleaner. I put both microswitches back in the assembly and reinstalled. I also used a moldable glue putty to weather seal the assembly. I've ridden the bike 2500 miles since without any fault. Please let me know if this helps, or you have any other questions.
 

Saint rob

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Thanks Sam that's precisely what I did and it did seem to make it better, maybe I just need to squirt some more switch cleaner in and work it a bit more. I just wondered if when you changed the relay it sorted it out for you without doing anything else.
 

StefanOnHisS10

Converting fuel into heat, noise and a bit motion
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Yesterday i replaced the switch assembly as adviced by my yamaha dealer. The chief mechanic told me that they have had multiple bikes with this issue and at all of them this switch assembly was the problem. They had never sold the relay that samstoterau discribes, not saying he isn't right or anything but in the Netherlands not once a problem. And they are by far the biggest dealership here. They are always very helpfull and don't ask money for everything, i trust their chief mechanic. So i ordered the part for 153 euro's. Today going to work not one problem, let's see what the future brings...
 

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Scoobynut

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Hey guys, another victim of the flashing cruise light here, no code though. I went ahead and bought a front brake switch as all the reading in this thread makes that seem like the most likely culprit.

My problem is, I'm unsure exactly where the connector on the other end, under the side panels, is. Could someone draw an arrow on the attached picture and re-post it to clue me in? Where the finger is pointing, the connector does not look the same as the one on the other end of the brake switch, again the one that obviously is routed to somewhere under the side panel. Thanks in advance for any help you can offer.

 

StefanOnHisS10

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@Scoobynut i just took the covers off mine to take a few pictures. It’s the green/yellow wired connector seen above the battery. It’s a fidelly job but manageable. The left arrow points the route it takes. No need to take the tank off, just loosen the reusable tay-wraps enough.

good luck!

Stefan
CF4F2E7F-3326-4071-A069-E4DD092D82AA.jpeg5B414BBC-E7C8-430D-994D-3AA684800642.jpeg7C885C46-59BD-4EC3-9568-5779802A570F.jpeg
 

Scoobynut

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Stefan, thank you so much for taking the time to do that! I looked high and low, but didn't really look in that area you are pointing to. Now to tackle the job. I don't really have the first clue about motorcycle electrics, but I sure can connect and disconnect electrical connectors! Thanks again.
 
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Scoobynut

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@Scoobynut i just took the covers off mine to take a few pictures. It’s the green/yellow wired connector seen above the battery. It’s a fidelly job but manageable. The left arrow points the route it takes. No need to take the tank off, just loosen the reusable tay-wraps enough.

good luck!

Stefan
Just wanted to follow up with Stefan since he was kind enough to point me in the right direction to do this job. You were right about it being a 'fidelly' job as it requires real patience (and nimble fingers) at times. I really took my time and studied the layout of everything as I went along and even marked with blue tape the spots where I undid something, or loosened (in some cases removed) a tie-wrap. Your advice about the tie-wraps was also helpful. I had also taken a picture of the layout, mostly just under the side cover before getting to work and also used your pictures as a reference.

Anyways, it all seems to have gone well and the solid -- not flashing -- cruise light on dash came on when I started the bike. I haven't had a chance to ride the bike yet, but am going to today. I think it will require more than a few rides to know it is really fixed, but I'm hopeful I have working cruise control again. Thanks again!
 

Scoobynut

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You are very welcome, that’s what makes a forum a good one. Enjoying the same thing and helping each other.

Stefan
Not to get off topic, but a small treat for Stefan for helping me. I notice you seem to be a BSA fan, so I took a photo of the poster I have hanging in my garage. I bought this original BSA poster from 1967 at a rummage or garage sale about twenty years ago for .25 cents. I'm not really into BSAs, but for .25 cents who wouldn't buy this? Enjoy!
BSA (1).jpg
 

StefanOnHisS10

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Very nice indeed, I own a thunderbolt from ‘73. The last one originally delivered in The Netherlands. Hard work but a joy to ride.
 

Scoobynut

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Very nice indeed, I own a thunderbolt from ‘73. The last one originally delivered in The Netherlands. Hard work but a joy to ride.
I have a bad habit of rescuing 1960's Yamahas, so I understand your BSA 'habit' very well. I suppose we'd better get back on topic now before we get scolded! :)
 
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Scoobynut

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Thought I would chime in with an update on replacing the front brake switch now that I've logged some miles on the repair. I've ridden the bike seven times now with distances ranging from 150 miles to no less than 50 miles each time. Cruise control has been working perfectly since replacing the switch (hope I didn't just jinx myself there). Now that I understand the issue a bit better, I'm going to take the old unit to a friend who's a whiz with electronics and see if he can restore its function, and then I'll have a spare if I ever need it. Only issue I've ever had with the bike, so can hardly complain.
 

LJM

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@Scoobynut i just took the covers off mine to take a few pictures. It’s the green/yellow wired connector seen above the battery. It’s a fidelly job but manageable. The left arrow points the route it takes. No need to take the tank off, just loosen the reusable tay-wraps enough.

good luck

Hey, just wanted say thanks to Stefan ! Got my switch installed CC problem fixed & the pics you posted really helped probably saved me hours of frustration, my connector was buried deep behind 3 other ones in that cover had to unplug em all to get to it but all in all a simple fix that could have relly been a pain.
And thanks to the other guys on the forum who take the time to post up & help others out.
LJM
 

maganal

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I just received a Yamaha warranty recall notice. Says "the brake light may stay on constantly and/or the cruise control system". What are the symptoms experienced? Not able to activate cruise control, Cruise control stays active or front brake brake problems?
 

maganal

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If you already repaired on your own you should be entitled to reimbursement. Yamaha Customer relations 800-962-7926
 
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