When the tailboard of a car is not powered on, the following steps can be followed for troubleshooting and handling:

　　1、 Check the power connection

　　Confirm if the power is connected:

　　Check if the vehicle power supply for loading the tailboard of the car has been connected. If not connected, immediately turn on the power.

　　Check the power socket and plug:

　　Ensure that the power socket has electricity and that the plug is in good contact with the socket without looseness or damage.

　　2、 Check the fuse and wire controller

　　Check the fuse:

　　If the power is turned on but the tailboard still does not respond, it may be due to a blown fuse. At this point, the wire controller should be turned on to check if the fuse is blown. If it is blown, immediately replace the fuse with a new one.

　　Check the line controller:

　　Ensure that the wire controller is connected properly and not damaged or loose.

　　3、 Check the contactor and battery

　　Check the contactor:

　　If the fuse is normal but the tailboard still does not respond, it may be due to a burnt out contactor. At this point, it is necessary to check whether the contactor is burnt out. If it is burnt out, immediately replace it with a new contactor.

　　Check the battery:

　　Check if the battery head wiring is loose. If it is loose, first check the wiring of the battery head and re weld it firmly.

　　At the same time, check if the battery level is sufficient. If the battery level is low, it may cause the tailboard to malfunction.

　　4、 Check the electrical system

　　Check the circuit:

　　Check if the wiring of the tailboard electrical system is intact and if there are any short circuits or open circuits.

　　Check the solenoid valve and other valve components:

　　If the tailboard cannot be raised or lowered normally, it may be a problem with the solenoid valve or other valve components. Check if the solenoid valve connector is loose. If it is loose, reconnect it firmly. At the same time, check if other valve components are damaged or not working properly.

　　5、 Other precautions

　　Safe operation:

　　Before conducting any inspection and maintenance operations, it is essential to ensure that the vehicle has come to a complete stop and turned off to avoid accidents.

　　Professional maintenance:

　　If all the above checks are normal, but the tailboard still cannot work properly, it may be a more complex electrical or hydraulic system failure. At this point, it is recommended to contact professional maintenance personnel for inspection and maintenance.

　　Regular maintenance:

　　In order to avoid faults such as power failure of the tailboard, it is recommended to regularly maintain and upkeep the tailboard, including checking whether the electrical system, hydraulic system, mechanical components, etc. are working properly.

　　Through the above steps of troubleshooting and handling, the problem of the car tailboard not being powered can generally be solved. If the problem persists, it is recommended to promptly contact professional maintenance personnel for handling.