What to do if the motor Hall sensor is broken?
2 Answers
Take out the multimeter and set it to the 20V range. Use the red probe to connect to the positive wire of the Hall sensor, and the black probe to connect to the yellow, green, and blue wires of the Hall sensor respectively. Turn on the power lock and slightly rotate the motor wheel. If the voltage changes, the corresponding Hall sensor is normal. Generally, the voltage change range is 0-5V. The motor and differential are usually separate. If it's a hex bolt, use a sharp awl to clean the dirt inside the hex cap for easier removal. Place the disassembled parts in order, and be careful to protect the internal magnets to avoid attracting debris and causing trouble.
I think if the motor Hall sensor is broken, the car might suddenly stop moving or have abnormal acceleration, which is quite annoying. That time when I was driving, the engine responded sluggishly and almost stalled at a traffic light. Try restarting the system first; if that doesn't work, check if the sensor connection wires are loose or dirty—sometimes cleaning them can fix the issue. Take it to a repair shop and have the technician diagnose it with a multimeter. If it's confirmed to be a Hall sensor problem, replace it with a new one. Additionally, this component is responsible for detecting the motor's position, and if it fails, it can easily cause instability in the entire control system. When washing the car, avoid spraying water directly at the engine area to reduce the risk of water damage. Safety first—don't force it to run to avoid accidents. Spend a little more time waiting for professionals to handle it. The cost is usually not high, just a few hundred bucks, but don't try to fix it yourself to avoid damaging other parts.
