RC390 2018 T.P.S problem. ECU closing throttle by itself.

[macgor]

Hi.

I have problem with my RC390 2018r.
During acceleration (full opened throttle) bike cuts off in way similar like QS would do this (it just feels like QS).

I was looking everywhere and finally got to to the TPS voltage.
Happily I have RapidBike Racing installed that monitors TPS vlotage.
I was able to ride with notebook connected to RapidBike and I have recorded interesting thing during that cut off is happening.

TPU voltage drops during that event and it looks like my bike is closing throttle by itself.

Here is recording of params during ride:

0:18 changing gear here, voltage drops to 3.55v by my throttle action then rising back to max of 4.24v
0:20 the cut off, voltage drops to 3.54 then comes back to 4.24v by itself and causing engine to lose power for while. It looks like throttle closed again for gear changing but it wasnt me this time.

I have no QS installed so this is not the failing QS case.

Strange thing that I had few moths where this happened very often, then it disappeared for some longer time, now it started to happen again.
But now I was able to find out that T.P.S voltage drop.

Any ideas?

Thanks,

Maciej

 

[macgor]

Case closed. This was RapidBike problem. Precisely firmware problem. I got new firmware from RapidBike company to solve this. They also wrote me that they had few issues reported by RC390 owners so this was not only me