Tracer 900 GT 2020 QS disabled still quick shifted

[stiefel]

Hi,

TL;DR: QS might have been disabled because of CEL, I didn't notice it if it was the case and still used the QS to shift 2-5. Bike worked like always am I in trouble?

Today I lubed the chains like any other time. Put the bike on the main stand put it in first gear, pull the clutch, start the bike, slowly release the clutch and lube the chain. I have done this multiple times with no issues. 

After I was done I killed the engine and checked the chain. I wasn't entirely happy with the results, so I repeated the precious steps. From the peripheral vision I saw the traction control light blink but it was done as soon as I looked at it, so I thought, because of the main stand the ECU might thought, that the bike is slipping. Anyways I lubed the chains killed the engine and I noticed the CEL was on. I tried to access the menu, but for my surprise it didn't work. Later I found on this forum, that it is normal behavior with newer bikes. In the same topic the guy said, that he removed the battery and after putting it back the CEL was on. I have kinda the same situation. Although I drove like 200km since I put back the battery after the winter. 

Nevertheless someone suggested, that it might be some low voltage stuff and the CEL should clear itself after riding. So that is what I did. I rode like 8-10km throughout the city I'm located, but the CEL was not clearing at one point I also used the QS for shifting through 2-5. After I came home I tried to research some more and I stumbled upon a video showing the engine light and the missing QS indicator. I have to say that I have never noticed the QS indicator until now btw. I went out to the bike and checked (turning the key but not starting the bike) and QS is missing on the display. 

Now the question how much did I f**k up my bike using the QS with potentially having the QS off? I don't know however if during the ride QS was on or off but I didn't notice anything weird like loud noise or locking the rear wheel or anything like that. It worked like any other time I used it. 

Now I also ordered an OBD reader and adapter cable to check the CEL. As this will be my first time doing this, can every OBD Scanner show the actual fault codes or am I going to be confronted with random bits which I somehow should convert to readable stuff? I mean I have seen can traffic but does the Yamaha ECU prints the fault codes as strings or is it just their binary format which only their diagnostic tool can interpret?

Thanks for your answers in advance!

[roadrash83]

Sorry to say but the Yamaha dealer is the only one that can reset the light on 19-20 model year GT's. Lots of stuff on the forum about it.

[stiefel]

Thanks for the reply. Yeah resetting the light is currently the thing I'm worrying the least about. Do you have any opinion about the QS part?

[Johnjo]

Hi mate,

Personally I wouldn't worry too much about the QS. Get the engine management light reset and all should be good.

I tripped the EML on the first lubing of the chain on my 9GT using your method. It sends the traction control sensor into confusion, hence the EML illuminating. I bought an OBD2 reader to reset it myself. Job done.

I didn't know that your model is a dealer reset only. That's unusual.

[stiefel]

Good to hear that. Yeah, I'll try it anyways and might save a few bucks and learn something new ^^

As I said I did this multiple times without any issues, idk what went wrong this time. 

Anyways, thanks for the reply 

[skipperT]

Depends on the year of the bike - starting in 17 (US models) you need an adapter cable and OBD II reader/or YDT dealer software to clear the codes. 15 and 16 models are accessed through the dash OBD. 

-Skip

[stiefel]

So the reader and the cable have finally arrived. According to the DTC log it is a P2158 which is according to the service manual "front wheel Sensor: no normal signals received from the front wheel sensors"

I have no idea how and why this was triggered...

I was not sure if I should try to delete it. I already have an appointment at the dealership.

Edited April 28, 2023 by stiefel

[roadrash83]

The light was set off because the front wheel was not spinning at all when the rear wheel was spinning, when you were lubing the chain. That fooled the system into thinking the front wheel sensor is bad and it through a code. 

[skipperT]

^—————-This. 

Clear it and don’t worry about it. 

maybe find a different method for lubing your chain. It’s dangerous to do it with the engine running in gear. 

-S

[Turd Ferguson]

AS far as my experience any OBD tool can reset the codes in a Euro4 and Euro5 ECU.

[Bill H]

On 4/26/2023 at 4:11 PM, roadrash83 said:

Sorry to say but the Yamaha dealer is the only one that can reset the light on 19-20 model year GT's. Lots of stuff on the forum about it.

Not true ,,I had same issue ,dealer spent an hour on trying but couldn't do it ,,went to Two wheel dyno and he cleared it in 30 seconds ,no charge ,,man was I happy 

[Heli ATP]

So it seems that even though 'QS' was not illuminated the quick-shifter was still operationable?

Why does the owners manual states that the QS is for use on gears 4-6. I can use the QS from 1-6 as long as the RPM are above 5k.

(Incorrect info, see below for correction)

[stiefel]

A bit late on the update but since there are still some talk here here ist how it went: I was able to clear the error massage without a Yamaha service adapter. So there might be some discrepancies between US and EU models? Idk. (I'm from the EU btw.)

3 minutes ago, Heli ATP said:

So it seems that even though 'QS' was not illuminated the quick-shifter was still operationable?

Why does the owners manual states that the QS is for use on gears 4-6. I can use the QS from 1-6 as long as the RPM are above 5k.

As I said, I am and was unsure if the QS light at the time of shifting was on or off, but I think it was off. Nevertheless the QS worked, although as I later found out you can shift without clutching with or without a QS system it just cuts the power automatically so you don't have to. I think you misread something as a quick googling for the owners manual (I don't have it printed out) says the QS works over 20kmph with at least 2.3k rpm. It doesn't say anything about 5k and/or gears 4-6. But I also heard about the 5k RPM thing btw. 

[Heli ATP]

52 minutes ago, stiefel said:

A bit late on the update but since there are still some talk here here ist how it went: I was able to clear the error massage without a Yamaha service adapter. So there might be some discrepancies between US and EU models? Idk. (I'm from the EU btw.)

As I said, I am and was unsure if the QS light at the time of shifting was on or off, but I think it was off. Nevertheless the QS worked, although as I later found out you can shift without clutching with or without a QS system it just cuts the power automatically so you don't have to. I think you misread something as a quick googling for the owners manual (I don't have it printed out) says the QS works over 20kmph with at least 2.3k rpm. It doesn't say anything about 5k and/or gears 4-6. But I also heard about the 5k RPM thing btw. 

I stand corrected and my manual says 4K and accelerating. I must have something in my head for a different model. Thanks for the clarification. I have experienced clunky shifts with low RPM's but never have a problem above 5K.

[stiefel]

12 minutes ago, Heli ATP said:

I stand corrected and my manual says 4K and accelerating. I must have something in my head for a different model. Thanks for the clarification. I have experienced clunky shifts with low RPM's but never have a problem above 5K.

True, you have to accelerate. As I said somebody told me as well this 5k rule, so I also only use it if the RPM is at least green and if I'm just cruising I don't really see the need for the QS anyways.