Error code 90

[Rick53]

I am getting an error code of 90 when turning the ignition on. After starting the cruise control will not work , light on display only flashes. If I restart and the code is gone the cruise will work. Is this usually the front or rear brake light switch? Any suggestions? thank you

 

[Nikolajsen]

I can be many different things..
But the mentioned switch are the most common cause.
(as I recall)

 

[Squibb]

Are you sure it read 90?

If you have a pre 2017, perhaps you could check by selecting Diag mode - post 17 & you will need a dealer or a decent OBD2 reader.

However, if you meant Code 19, this would indicate a faulty side-stand switch, which can sometimes be the clutch switch - both affect setting CC.

 

[bnschroder]

Had the same happen on my 2014 a few times. Fortunately the issue resolved itself each time. I can't say what prompted it. Once it was after a major downpour, the second time after I had done some service, including flushing the brakes. I don't use the CC much, but fortunately it worked the one time I really needed it (Saddle Sore and Bun Burner combo) and that was only weeks after the issue happened the first time.
From everything I have been reading here, tearing down all the switches isn't a guaranteed solution either, so I rather save the money and hassle.

 

[MurrayC]

Hi,
I have been experiencing the Flashing CC light recently.
I think I have found the problem, I hope!
Troubleshooting:
Key ON ( no need to start)
CC switch Press
Amber CC light should illuminate steady.
Repeatedly actuate Front Brake Lever, ( for me, after about 20 blips, the CC amber light started flashing).
Repeat same procedure for Clutch and Rear Brake.
In my case I was "only" able to get the CC amber light to start flashing via the Front Brake Lever.
Hum.... guess I will order a new front brake switch, as it appears non- repairable.
I hope this helps you.
Cheers, from Vancouver Island BC

 

[StefanOnHisS10]

Hi,
I have been experiencing the Flashing CC light recently.
I think I have found the problem, I hope!
Troubleshooting:
Key ON ( no need to start)
CC switch Press
Amber CC light should illuminate steady.
Repeatedly actuate Front Brake Lever, ( for me, after about 20 blips, the CC amber light started flashing).
Repeat same procedure for Clutch and Rear Brake.
In my case I was "only" able to get the CC amber light to start flashing via the Front Brake Lever.
Hum.... guess I will order a new front brake switch, as it appears non- repairable.
I hope this helps you.
Cheers, from Vancouver Island BC

For me it was the front brake switch assembly. No more problems since I changed it for a new one (€153) two weeks a go. Hope it helps you.

stefan

 

[MurrayC]

Hello Again.... I just removed the switch assembly from the brake lever assembly, and found upon close inspection, that the switch halves do not close 100%, the little plastic tangs are not a great fit. I opened the switch, cleaned and lubed with a little silicone spray and then closed it up . I additionally tightly secured the switch halves with whipping thread (marine stuff), and teassembled. Now following my previous procedure the amber light does not flash. Bottom Line.... a cheap crappy switch... shame on Yamaha!

 

[Don T]

I have had the same issue a couple of times each year since I got my bike back in 2015.
Every time I've fixed the problem by sprayed the front brake switch with a bit of oil.

 

[MurrayC]

Hi Don, Thanks for your suggestion. After opening the switch, and finding a bunch of plastic parts, I can see where lube is helpful, keeping the bits moving as intended.
Cheers!

 

[LJM]

Well, It happened to my 2014 ES yesterday & wouldn't you know 2 months after YES warranty expired ! So I started trying to figure out what was causing it here's what's going on, turn key on CC light normal pull in f-brake lever a bunch of times nothing changes press rear brake a few times then after about 5-6 times the CC light starts blinking & error code 90 shows up on dash. I searched for error code 90 & this thread came up.
I've heard of the rear brake switch adjustment being a problem (that's not my problem as I've got it adjusted so the pedal goes about 1/2 way before light comes on) & Front brake or clutch switch being a problem and replacing those switches fixed problem. Has anyone had a rear brake switch failure cause the CC problem or is that circuit linked somehow and the real problem is the F-brake switch ?
Thanks
LJM

 

[MurrayC]

Hello again: further to my previous posts on this issue.... I have gone over the front brake / cruise wiring, end to end, and it appears as others have mentioned... it requires a new switch assembly. Lucky me, not currently available in Canada (C$190.00) most US suppliers won't ship to Canada due Covid, and the duty and taxes plus our weak dollar.... man what a mess. I am stuck for now... Thank you YAMAHA, you make my day!

 

[StefanOnHisS10]

Well, It happened to my 2014 ES yesterday & wouldn't you know 2 months after YES warranty expired ! So I started trying to figure out what was causing it here's what's going on, turn key on CC light normal pull in f-brake lever a bunch of times nothing changes press rear brake a few times then after about 5-6 times the CC light starts blinking & error code 90 shows up on dash. I searched for error code 90 & this thread came up.
I've heard of the rear brake switch adjustment being a problem (that's not my problem as I've got it adjusted so the pedal goes about 1/2 way before light comes on) & Front brake or clutch switch being a problem and replacing those switches fixed problem. Has anyone had a rear brake switch failure cause the CC problem or is that circuit linked somehow and the real problem is the F-brake switch ?
Thanks
LJM

With my bike it was the front brake switches like mentioned above. Have had no problems anymore.

 

[LJM]

Hi Murray, that sucks but I'm gonna be ordering a switch today or tomorrow there about 97.00 usd I'd be willing to order 2 and I could ship it too you if that will help (I live in Oregon).
If you want try something like that send a PM.
I did just get finished taking switch apart cleaned & lubed it I doubt it did much good but I'm going for test ride in a few minutes & see
LJM

 

[LJM]

With my bike it was the front brake switches like mentioned above. Have had no problems anymore.

Ok, I just ordered the switch, did you replace switch yourself if so can you tell me where it plugs into ? I'm thinking tank has to come off to find the other end and install it.
Thanks
LJM

 

[MurrayC]

Hi,
Changing the switch requires removing both upper side panels, tipping the tank up, releasing a bunch of ty wraps, clamps and pulling the main wiring bundle away from the area enough to get to a black plastic moisture shield. There are 4 plugs inside the shield, one of which is the one you want. This is not difficult, but rather fiddling and time consuming. The plugs are sometimes sticky to separate. I hope this helps. Post again if you need more details...... Have Fun!

 

[MurrayC]

Hi LJM, Thank you for your offer to help with the switch shopping, great idea. I have just arranged an order through a relative.
Cheers!

 

[StefanOnHisS10]

It is a pretty simple job, but as mentioned by @MurrayC Fiddling and time consuming. It took me an hour. Removed upper and lower panels on right side. Loosened bunch of reusable cable-ties. The plug is roughly located above the battery a bit to the right, in a group with in a sort of cover. No tank removing or loosening required for me.
You can do it, good luck!

Stefan

 

[MurrayC]

Hi Guys, further to the flashing CC light & switch replacement...
Yamaha Customer Service in Canada told me the original -00-00 front brake switch is being phased out, replaced by a -01-00 part number. The original switches are disappearing, and the superseding and hopefully better engineered part is currently coming up as a backorder. This is somewhat annoying, but there appears to be light at the end of the tunnel. Good luck if you are trying to acquire a replacement part. Cheers from Vancouver Island!