Communication method and system for controlling work of automobile upper parts

The invention discloses a communication method and system for controlling the work of an automobile upper part, and relates to the field of automobile upper part control. The method comprises the following steps of: performing can communication between a vehicle control unit and a loading controller, and after receiving a working signal of the vehicle control unit, executing a corresponding action and feeding back a corresponding signal by the loading controller, the working signals comprise a heartbeat signal, a loading motor enabling control signal used for controlling the loading system to work through the mechanical connecting piece, and a monitoring signal used for monitoring the working state of the loading system. In the working process of the loading system, the working state of the loading system can be monitored through interaction of communication information between the vehicle control unit and the loading controller; on the basis, if the loading system has a fault, the fault can be quickly positi