· Electric Scooter Alarms
· Electric Scooter Locks
· Moves Strangely Issue
· Range Decreased Issue
· Scooter Battery Issue
· Scooter Chargers
· Scooter Controller Issue
· Scooter Fuses, Wires, Etc.
· Scooter Motors
· Scooter Repair
· Scooter Stopped Issue
· Scooter Throttle
· Unusual Noises Issue
If you have an electric scooter and believe, you might have a problem with the
throttle, now you can diagnose the problem yourself without having to pay a
fortune for someone else to take it apart and tell you what he, or she
Start by measuring the resistance between the "common", "low going to high." The
resistance of the throttle is measured in Ohms, which should be below 100. As the
throttle is pressed, the resistance will increase to approximately 5,000 Ohms. If
the Ohms start at 400, which are too high, the motor / controller will be tricked
into thinking that something is not working right and therefore will not respond.
When measuring the Ohms resistance between the "common" and the "high going to
low", you should see resistance at around 5,000 Ohms. Again, once the throttle is
pressed, the Ohms should dramatically fall to 100.
To jumper between those two outer pins of the connection from the throttle, you
can simply use a paper clip. This allows the motor to run and operate until you
remove the jumper. Here is an example of how the throttle voltage and the motor
will work together.
Three wires go to the throttle (black, red, and brown). Using the ground as
reference, the red wire is at a constant +5V and the red wire controls the speed
of the motor. Impedance from the red wire to the brown wire is approximately
5K0hm, red is positive, power on. Once the red wire rises above 110mV, then the
motor control circuit becomes energized. If the red wire dips below 180mV, then
the motor will not turn and in actuality, will become resistant to backward turns
- above 180mV, the motor begins to run. Regardless of how slowly the red wire is
raised, the motor will start quite abruptly, in fact with a gentle jerk. The
motor speed will rise in proportion to the voltage on the red wire until 3.6V is
reached. At that point, the motor will quickly jump from medium to full speed.