Common Troubleshooting for Electric Quadricycle Controllers
2 Answers
Common troubleshooting methods for quadricycle controllers are as follows: 1. Turn off the ignition lock, if there is resistance when gently rotating the motor, it indicates that the controller's MOS tube is damaged. 2. Connect only the power line to the controller, measure the voltage at the controller's power output terminal with a multimeter. If the voltage is <4V, it indicates an internal fault in the controller. 3. The "abnormal condition" caused by damage to the motor Hall sensor indicates a problem with one of the phase line circuits inside the controller. Additional information about electric quadricycle controllers is as follows: 1. The electric quadricycle controller is the component that controls the motor's rotation. 2. If the controller is damaged, it may cause short circuits, burn out the electric vehicle's fuse, or trip the circuit breaker.
I've encountered this issue several times. The most common scenarios are the controller not working at all or functioning intermittently. Loose plugs or oxidized connectors are the most frequent culprits, especially for wiring near the chassis that's prone to water exposure. If the power transistor burns out, the vehicle will completely stall, often accompanied by a burnt smell. When the dashboard shows a controller fault code, it usually means the Hall sensor has failed, requiring replacement of the entire controller. If the relay gets stuck, the vehicle may accelerate uncontrollably - immediate power cutoff is crucial. Just last month, I repaired a case where the cooling fan was clogged with mud, causing the controller to overheat and shut down automatically. All these checks require removing the underbody panels - beginners shouldn't attempt this carelessly. Always wait five minutes after removing the key to allow capacitor discharge for safety.
