If the electric vehicle is totally dead without symptoms and problems other than dynamo, battery, and controller problems, it can do a general check-up. Meanwhile, perhaps you may need to check out the online electric scooter Singapore store as well.
1. Turn on the ignition key:
2. Check the supply voltage on the B + controller and contacts. If there is a suitable voltage (eg = 48V for electric vehicle 4 batteries or 36V for electric bicycle 3 batteries) then go to point 3. If there is no voltage then go to battery and battery check from battery to controller. Maybe the cord breaks in the road.
3. Remove the controller socket connected to the alarm, brake, speedometer, and other features. The only remaining sockets that go to the 3 phase motor, hall sensor, ignition, battery B + and B-, and handle the gas. Open the gas handle to rotate the motor, if the motor rotates normally then the problem is other features such as brake sensor, and alarm. If the motor still does not want to rotate then go to point 4.
4. Check the voltage in the red cable hall sensor and handle the gas. If the 5V out voltage goes to point 5. But if there is no voltage 5V then the controller is damaged.
5. Check the voltage on the green cable (some are blue) in the gas handle socket on the controller. While rotating the grip of its gas handle when out voltage from 0V to 5V then go to point 6. If there is no change of voltage then there is damage to the handle of gas or cable to the gas handle drop out.
6. Check the tension on the green, blue and yellow cables on the hall sensor while the motor is rotated slowly with the hand. If the voltage changes then go to point 7, but if there is one that the voltage does not change then the hall sensor in the BLDC motor is problematic.
7. If the above points have been done all, then certainly BLDC will spin normally, but if it does not rotate normally or remain dead total then certainly the micro on the controller is damaged. And the solution is to replace it with a new controller.