Cruise Control won’t engage!

sedwards

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Joined
Nov 2, 2010
Messages
24
Location
Austin, Texas
2015 Super T, 11k miles, Ecu flashed several years ago by Anthony, have gps and led lights wired in.

I’m looking for any advice on a cruise issue. Recently, my cruise refused to engage even though light is illuminated on dash and Brake is not engaged. I assumed it had something to do with the brake switch recall which I had been ignoring for the past year. Just returned from my local Yamaha dealer having recall performed and yet cruise still refuses to set. They asked to keep it and run diagnostics and research the issue. With all the mods I’ve done, I’m concerned about them digging into the electronics.

Any ideas what might be the issue? Any known “cruise module” or electronic component that might be bad?? Bad switch on the handlebar? Appreciate any thoughts. Thanks!
 

gv550

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Sep 14, 2016
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Listowel, Ontario, Canada
Check all the switches in the cruise system. Clutch, throttle body, 2 front brake, 2 rear brake. Both brake levers have 2 switches, one for the brake light and one for cruise, and both need to be working and in sequence.
 

Cantab

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Mar 15, 2020
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483
Location
Christchurch NZ
2015 Super T, 11k miles, Ecu flashed several years ago by Anthony, have gps and led lights wired in.

I’m looking for any advice on a cruise issue. Recently, my cruise refused to engage even though light is illuminated on dash and Brake is not engaged. I assumed it had something to do with the brake switch recall which I had been ignoring for the past year. Just returned from my local Yamaha dealer having recall performed and yet cruise still refuses to set. They asked to keep it and run diagnostics and research the issue. With all the mods I’ve done, I’m concerned about them digging into the electronics.

Any ideas what might be the issue? Any known “cruise module” or electronic component that might be bad?? Bad switch on the handlebar? Appreciate any thoughts. Thanks!
Mines still intermittent after the 'Recall' was done a few months back.
 

ErictheBiking

Active Member
Joined
Feb 28, 2020
Messages
58
Location
Australia
When I first got my S10, CC wouldn't work at all, so followed someone's advice here and checked my brake light.
Sure enough it was permanently on.
I adjusted the rear brake light spring tension and all good.
But now and again the CC won't engage although the orange CC light is on.
In this case I use my heel to lift up the brake pedal and the CC engages.
 

Squibb

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Aug 10, 2014
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Location
Bedford, UK
Best check 'diag' , via the dash on a 2015, to see if there are any codes. Possibly not, but it's always a good starting point.

If you have a solid cruise light (not flashing), then the fix should be relatively straightforward (haha).

As @Sierra1 mentions, check the rear brake pedal switch (behind the heel plate) first & make sure there is plenty of slack before it activates the brake light. So often, riders have adjusted the pedal position, but not the BL switch.

The next most likely culprit is the clutch switch. Often the first clue to this double contact switch failing will be the bike only starting when in neutral. There are various cheat options.

Then I would be looking at the throttle grip free play (page 6-17) of my Owner's Manual.

Hopefully one of these options will sort you out, without the need to go deeper.
 

sedwards

Member
Joined
Nov 2, 2010
Messages
24
Location
Austin, Texas
Best check 'diag' , via the dash on a 2015, to see if there are any codes. Possibly not, but it's always a good starting point.

If you have a solid cruise light (not flashing), then the fix should be relatively straightforward (haha).

As @Sierra1 mentions, check the rear brake pedal switch (behind the heel plate) first & make sure there is plenty of slack before it activates the brake light. So often, riders have adjusted the pedal position, but not the BL switch.

The next most likely culprit is the clutch switch. Often the first clue to this double contact switch failing will be the bike only starting when in neutral. There are various cheat options.

Then I would be looking at the throttle grip free play (page 6-17) of my Owner's Manual.

Hopefully one of these options will sort you out, without the need to go deeper.
great info, guys! Thanks. Bike is currently at local Yamaha dealer but I rarely have much confidence in them! They allegedly checked the rear brake adjustment to no avail. Will give them a chance to diagnose first. I was unaware there is a separate rear brake switch to adjust when adjusting brake pedal free play/height.
 

Jlq1969

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May 5, 2018
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Location
Argentina
great info, guys! Thanks. Bike is currently at local Yamaha dealer but I rarely have much confidence in them! They allegedly checked the rear brake adjustment to no avail. Will give them a chance to diagnose first. I was unaware there is a separate rear brake switch to adjust when adjusting brake pedal free play/height.
The problem with official dealers is that they have a very brief checklist.
-) if the cc does not work, check the wiring
-) if after checking the wiring, it still does not work, replace all the wiring
-) if after replacing the wiring, it still does not work, replace the ecu
-) if after replacing the ecu, still does not work ... ask someone who knows :):)
 

sedwards

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Nov 2, 2010
Messages
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Location
Austin, Texas
As a follow-up to my original post, my bike has been a the dealership awaiting a replacement switch unit that resides on the left hand bar (you know, the big one with all the buttons that controls cruise, lights, turn signals etc.!) They allegedly checked all other areas including both brake switches, clutch switch etc. and the main handlebar switch had an electrical issue. I've not heard of anyone else having that unit fail so really hope this fixes the issue. Still awaiting arrival of part.
 

Squibb

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Bedford, UK
As a follow-up to my original post, my bike has been a the dealership awaiting a replacement switch unit that resides on the left hand bar (you know, the big one with all the buttons that controls cruise, lights, turn signals etc.!) They allegedly checked all other areas including both brake switches, clutch switch etc. and the main handlebar switch had an electrical issue. I've not heard of anyone else having that unit fail so really hope this fixes the issue. Still awaiting arrival of part.
Hmm - that's a new one on me. You have a solid cruise light, so it seems a tad unlikely - whose dollar is this on?

Do they realise it's a Yamaha, not a BMW? Whatever, let's keep our fingers crossed that this gets you sorted.
 

sedwards

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Joined
Nov 2, 2010
Messages
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Location
Austin, Texas
Hmm - that's a new one on me. You have a solid cruise light, so it seems a tad unlikely - whose dollar is this on?

Do they realise it's a Yamaha, not a BMW? Whatever, let's keep our fingers crossed that this gets you sorted.
yep, had a solid cruise light on dash. It'll be on my dime so it better fix the problem! Thought for sure it was recall related but nope...
 

TOS

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Nov 19, 2016
Messages
53
Location
Southern OK
Problem with 2015 Super T- ES.
Several weeks ago I installed a Stebel airhorn by using the original wiring from the Yamaha horn.
It worked ok then and haven't used horn again until this AM. My horn stopped sounding before I let off the button. A few miles down the road I tried to engage the CC and I got a flashing indicator light.
Have been checking fuses and such since I got home (couldn't find horn fuse in manual). I couldn't find any obvious issues yet. Just got on here for help and remembered the brake switches problem sometimes.
Those seem to be ok, but discovered problem is even bigger. I have NO taillight, tag light or brake light either (fuse ok).

Trip planned for MN early Tues. morning. Please help.
 

TOS

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Messages
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Southern OK
No I took a chance and skipped that. It worked ok on my MB Class C RV. Thought I'd do it again, poor plan.
I called local dealer service dept. about 4 hrs ago. Lady said, "everyone busy in service dept., I'll have them call you"....still waiting.
 

Squibb

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No I took a chance and skipped that. It worked ok on my MB Class C RV. Thought I'd do it again, poor plan.
I called local dealer service dept. about 4 hrs ago. Lady said, "everyone busy in service dept., I'll have them call you"....still waiting.
IIRC the stebel airhorn pulls around 18A, whereas the OE pulls only 3A, so you are asking a lot from fuse 8, the signalling system circuit, which is fused at 7.5A on my 2014. That fuse just has to blow, unless it has been uprated significantly, so I am left wondering whether you have simply fried the wiring somewhere?
 

TOS

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Southern OK
Good news today! I took ST into local dealership and had a diagnostics run.
Problem was an inline 5amp fuse that is not under the right side A & B covers. This 5amp fuse supplies power to the horn, tag light, tail light.
Fuse replacement fixed all my problems. The technician that fixed this was at lunch when I picked up the ST. Service guy said he would find out exactly where this hidden inline fuse is at and let me know.
When I get that info, I will share it here.
Ride Safe everyone
 

WJBertrand

Ventura Highway
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Ventura, CA
Glad you got it sorted. Meanwhile, rewire that horn using a relay so it doesn’t happen again!


Sent from my iPhone using Tapatalk Pro
 

sedwards

Member
Joined
Nov 2, 2010
Messages
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Location
Austin, Texas
So then what happened
Thanks for asking!

So to refresh, my CC would not engage despite the light on dash being illuminated, brakes not being "engaged" to the point of keeping CC from engaging and having the front brake switch recall performed. For you electronic gurus, please feel free to add your insight here. They said they checked the voltage at the cruise control wiring harness and got 13.5v. It measured 15.7ohms when set button pressed. They diagnosed this as a faulty left hand switch assembly which they replaced. Still had same issue after replacement. Hooked up to Yamaha diag tool and cleared codes. It showed that the cruise would engage and then quickly shut off; CC cancel switch was cutting all power to the CC switch. They had to engage with Yamaha tech support to ultimately clear whatever codes were responsible.

Not sure I understand exactly what was wrong here but I give them credit for not charging me an arm and a leg for all the diagnosis. CC now works, I have a new switch cluster on the left side of bar. Was the original switch faulty?? I'm not sure but glad to have my bike back and it now working. Unlike many who don't seem to care for CC, it is a must have on any long distance bike for me. Riding 10 hours of boring Texas highways to get to NM or Colorado requires it for me!

I hope somehow this helps someone else who is having CC issues and they are not resolved by having the brake recall completed.
 
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