kind of a serious problem that sounds expensive YIKES!
Throttle servo motor:
open or short circuit detected.
Defective throttle servo motor.
Malfunction in ECU (servo
motor driving system).
• Open or short circuit in wire harness.
• Defective throttle servo motor (potentiometer
• Stuck throttle servo motor (mechanism).
• Stuck throttle servo motor (motor).
• Malfunction in ECU.
I'm having the same problem. Just took the bike in to a Yamaha gold mechanic. I'll let you all know what the problem was.
Things I did, Checked all the wiring that I could get to, changed the Oil because it had sat for almost 9 months. Nothing but a hard idle. Gas was drained and new was added with additive. We'll see what they come up with.