2018 Cruise Control Light Flashing - Page 2 - Yamaha FJR Forum : Yamaha FJR Owners Forums
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post #11 of 18 (permalink) Old 09-03-2020, 10:58 PM
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Originally Posted by 2013fjr1300 View Post
I have the same exact issue on occasion on my 2013FJR. However it is rare and it has only happened when I'm already in motion and want to use the cruise control! (Yes - that is annoying!) By stopping, turning the bike off, restarting and engaging the cruise button 'ON' again it always resets.
Ditto. On a long ride recently I actually just pulled in clutch, turned key off for five seconds, turned back on, restarted engine, turned CC on, flashing light was gone, re-engaged CC and kept going.
I’ve never had the flashing light start while CC was engaged, just when it was on and not engaged.
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post #12 of 18 (permalink) Old 09-04-2020, 08:34 AM
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Have you guys cleaned and lubed your sensors? Try it and see if that goes away.

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post #13 of 18 (permalink) Old 09-04-2020, 09:55 PM
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I guess I'll have to get a bit closer next time I'm washing the bike and see if I can find the sensor(s). I assume it's using the ABS sensor so I need to look at both tires? Or is there a separate sensor for CC?

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post #14 of 18 (permalink) Old 09-05-2020, 01:55 AM
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No, there is no separated CC sensor.


If the ABS system is not generating a fault, your ABS sensors are almost certainly OK. And the CC system has no way of knowing whether or not the brake lights are working. CC problems are pretty much tied to the interlock switches on the front brake and clutch interlock switches and the rear brake switch.
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post #15 of 18 (permalink) Old 09-05-2020, 08:10 AM
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Prior to Gen3, the rear sensor was used for speedo (ECU) and both used for ABS (ABS ECU). Add cruise and the ECU uses both signals. The system got more sensitive to those signals it seems.
One screw holds each of the sensors, simple to remove, clean off any corrosion, lube with silicone (dielectric) grease on the sensor sleeve and the hole it goes in.
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post #16 of 18 (permalink) Old 09-08-2020, 09:41 AM
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I guess I'll have to get a bit closer next time I'm washing the bike and see if I can find the sensor(s). I assume it's using the ABS sensor so I need to look at both tires? Or is there a separate sensor for CC?
I pulled the sensors this weekend (easy to find once you look for them) and both were spotless clean with a very light coating of some kind of oil/grease. I really doubt the intermittent error is due to a dirty sensor.

My current guess is that it could be when one of the tires slips a bit the system detects an error, and once set the only way to reset the error is to turn ignition off/on.
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post #17 of 18 (permalink) Old 09-08-2020, 09:57 AM
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Long-standing challenge. What happens is part of the start-up sequence does a diagnostic on, among other things, the proper functioning of the disabling mechanisms. This includes the front and rear brake levers and clutch lever. They each have two microswitches, positioned to be operated in sequence. If the bike senses position of the switches is illogical, it will disable arming of the CC. It's always been one of these three and it's maddeningly transient. Fails on one start, works fine the next. So far: contact cleaner inside the front brake switch assembly cleared the first instance. The second had to do with a sticking rear brake pedal, and the third the clutch switch assembly needed to be cleaned.

This last one was a little different. The CC armed light came on OK, but I couldn't set it. Cycling the clutch handle while still riding cleared it. There are diagnostics to check out which of these is the culprit, but so far it has always been so sporadic that they wind up passing when I test them. So it's an educated guess as to which is the problem.
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post #18 of 18 (permalink) Old 09-14-2020, 07:48 AM Thread Starter
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OK this thing is starting to P me off. As of yesterday I can't ride more than a few minutes before the CC light starts flashing and I lose CC.

I'm just out of warranty now so I'm not keen on taking it in to the dealer. I looked at the service manual and it says:
"Because the automatic deactivation of the cruise control system is stored in the memory of the ECU, the deactivation can be checked using the Yamaha diagnostic tool." As I only have an ODB2 reader there is no way for me to diagnose what is actually causing the CC to de-activate.

Will something like this


or
https://ca.dhgate.com/yamaha-diagnos...ol-canada.html
read the codes for me?

The other thing that has me suspicious is that this problem started appearing after my 13K km service where the yammy dealer tech supposedly changed my spark plugs. The other thing I've noticed is my low fuel indicator lights have changed levels. Before this service my first low fuel light indicated when I had 5L left in the tank, second light at 3L. The second light now seems to be indicating at about 4-5L left. I am starting to wonder if the tank was re-installed differently or some wires have been dislodged during the spark plug change. Is it coincidence?

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