Have a look here
https://foc-u.co.uk/index.php?topic=20273.0
3,000 RPM = Throttle Position Sensor (TPS) Fault
4,000 RPM = Speed Sensor Fault
7,000 RPM = EXUP System Fault
9.000 RPM = Overturn Switch Fault

https://foc-u.co.uk/index.php?topic=20273.0
3,000 RPM = Throttle Position Sensor (TPS) Fault
4,000 RPM = Speed Sensor Fault
7,000 RPM = EXUP System Fault
9.000 RPM = Overturn Switch Fault