2014 yamaha issue

[whistlebritches]

N-R) will "stick" in reverse. I jumped on it, put it in R, drove it around, then put it in F, drove it some more. All was fijne? Next day I jumped back on it and put it in R to move it, and it moved ok but then when I went to F, the buzzer is stuck on and the car will not move. I inspected the wiring and the only thing I found was that the speed sensor had a wire pulled out of it which I repaired. I wouldn't think that'd cause any issue other than loss of speed control? Car battery pack is 51.3v, checked all the connections, etc--found no issues obvious. Still has the stock Moric controller. Does it sound like the controller might be bad? The FNR switch is working properly, I can disconnect the switch from the harness and the beeper stays on just the same. By looking at wiring diagram, it looks like +48v is supplied to the beeper all the time via tow/run switch, then the MCU grounds the other wire to make it beep in R, unless I read it wrong? So if that's the case there is 2 possibilities, wire grounding, OR failing MCU?

Am I right?

[whistlebritches]

Oddly, the car is working fine now?

Tried turning the tow/run switch off, and then back on. Doesn't change anything. F-N-R doesn't change anything either.

When the problem existed, it was just after turning the tow-run switch on. As soon as I went to reverse, the buzzer went off as normal. Then turned the FNR switch to F, to go foward, is still beeping, will not shut off. Turned off the tow-run, beep stopped. Turned it back on, beep all the time.

very intermittent. Any ideas?