We have a 2015 GTS300 with 1600 miles.
My wife was riding this morning and she claims it started shaking on her and the ABS & EFI / ASR lights came on. Also the speedo kept going from 0 to the speed she was doing. She also says the oil light came on. She may be confusing that though with something else? Anyway, the scooter then stalled and she said she couldn't start. So just called me. She claims she smelled burning.
So off i went to go pick her up. Tried the scooter and it started. No obvious oil loss, no obvious smells. Given it had started with me, i told her to just get it home for further diagnosis.
No its home i started checking all the obvious things, but i really can't see anything. I was honestly expecting perhaps a caliper had seized or something similar and it was freaking out the abs sensor. I checked that both wheels were rotating smoothly, which they both are. I checked the ABS / Speed sensor, it looks to be secured as expected.
The battery was only replaced earlier this yr with an OEM one. 400 miles ago.
For me, it doesn't seem to be having any mechanical issues. The scooter does seem to run smoothly. However the ABS light and EFI / ASR lights do come on and off. At random intervals. Perhaps 10secs on then off. When the lights are on, the speedo goes to zero, when off, the speedo resumes the correct speed.
I tried a couple of emergency stops, everything stops as normal.
However when slowing down, the scooter did stall on me a couple of times, but i had no issue restarting it. Nor did i see any oil light.
Any idea's of where i should start digging? Bad ABS sensor ? but that wouldn't have anything to do with the scooter stalling. I couldn't reproduce any shaking. So who knows. I don't think its mechanical. I'd almost say the ECU is going berserk. I know weak batteries cause all sorts of issues, but this battery is almost brand new. I've not tested it per se, but i doubt its the battery causing issues.
So appreciate any ideas.
Thanks in advance.