Electric Vehicle Manufacturers introduces how to quickly find faults of electric bicycles and troubleshooting
(1) (When there is electricity, turn on the power lock) Use a multimeter to measure the voltage of the motor lead, and you can immediately judge the fault between the controller and the motor lead or the control circuit ① The measurement result has voltage, then it is determined: the motor is broken or the controller If there is an open circuit fault between the leads of the motor, it should be eliminated. ② If the measurement result has a primary voltage, it is concluded that the controller circuit is faulty, and the next step should be checked.

(2) Measuring method: disconnect the brake power-off plug of the controller, and then transfer the adjustment handle ①If the car rotates, it is determined that the brake power-off switch is broken, causing a short circuit failure, and the brake power-off switch should be replaced. ②If If the car does not turn, replace the original speed control handle with a good speed control handle for the test. If the car rotates, it is concluded: the original adjustment handle is broken, causing the motor to not rotate, and the new handle should be replaced. ③If the motor still does not move with the new speed adjustment handle, it is concluded: the controller is broken, and the new controller should be replaced.

(3) Measuring the battery box contacts can immediately determine the failure caused by the power supply part. Measurement method: Use a multimeter DC voltage block to measure the battery box contacts, whether there is voltage display ①If there is no voltage display, open the power lock, and the instrument panel If the indicator light does not light up, it is concluded that a, the fuse tube fuse is broken, b, the wire is off, and the welding head is broken. ②If there is a voltage display, turn on the power lock, and the dashboard display light does not light, then it is concluded: the power lock is broken and the power is not turned on. , You should use a new lock to open the power lock, the car will not stop rotating, unable to brake (car phenomenon) Inspection method: disconnect the controller and the speed control handle plug (three-wire plug 7, 8, 9), you can immediately determine the adjustment Fault of speed handle or controller ①After disconnecting the plug of speed control handle, turn on the power and lock the car without turning, then it is concluded that the speed control handle is broken and should be replaced with a new one; if the photosensitive film or magnetic steel sheet falls off, it should be reinstalled. Or paste it well ② After disconnecting the speed control handle plug, turning on the power to lock the car, it still does not turn, then it is concluded that the controller is broken, and the power supply should be replaced.

Through the above introduction, Sport High Power E-Bike Manufacturers hopes that you can simply refer to the content of this article in future use.