Repair Handbook: Troubleshooting Roundup for Electrical System of Electric Tricycle-4
4、The motor speed is insufficient
(1) Causes:
① Throttle damaged, ② Insufficient battery capacity or charging failure, ③ Controller malfunctioning, ④ Motor malfunctioning
(2) Troubleshooting
① Detect the signal wire (green) voltage of the throttle; the terminal voltage should be 4.2V when the throttle is at its maximum angle. If less than 4.2V, the electrode will slow down, and the throttle should be replaced. ② Recharge the battery. ③ Replace the controller or motor, or replace both of them.
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