It includes no less than 19 faults that occur during the maintenance process of subway vehicles, such as faults in the output of the master controller, lack of traction for the whole train, failure to disconnect the battery, non - functioning cabin lights (phase loss), and short - circuit faults in fire alarm probes.

In a virtual simulation environment, simulate vehicle maintenance faults (including mechanical, electrical, and control aspects) and provide corresponding tools to demonstrate fault maintenance. The proportion, size, material, and color of the components in all fault - maintenance scenarios are the same as those of the real vehicle.