In January 2017, at the invitation of Shanghai Volvo (volvo headquarters), the Volvo (VOLVO) new S90L was used for car CAN bus data adaptation, and the canbus content was acquired by oscilloscope waveform, and the dynamic body control system, VIN, speed, speed, key was obtained. Status, brakes, steering angle and all light signals are applied to the 4S Group test drive fleet management.