Inscription: Do you want to ask, "The electric snack car can't move, but what is the reason why the wheels can't turn when it is in neutral?" ? Motor Hall fault. The Hall fault of the motor will be displayed on the instrument, but the motor will not rotate when the handle is turned. If the voltage of Hall signal line measured by multimeter has not changed, it means that Hall is damaged and needs to be replaced with a new Hall. Electric snack car is a kind of dining car, which has the characteristics of good fluidity, unlimited space and compact appearance.