Scanning method for electronic control unit in vehicle and vehicle diagnostic device

A vehicle diagnostic device, comprising:

• a device host and a diagnostic connector;
• wherein
• the diagnostic connector is configured to connect the device host to a vehicle bus, at least two sets of pins being integrated on the diagnostic connector, each set of pins being connected to a vehicle bus, each of the vehicle buses being connected to at least one electronic control unit in a vehicle, each of the vehicle buses having a corresponding scan list, and the scan list comprising a to-be-scanned electronic control unit;
• and
• the device host is communicatively connected to at least two automobile buses through the diagnostic connector, and the device host is configured to transmit a scan signal on the at least two vehicle buses in parallel according to the scan list corresponding to each of the vehicle buses, to determine whether the to-be-scanned electronic control unit in the scan list exists in the vehicle.

A non-transitory computer-readable storage medium with at least one computer-readable instruction stored thereon, which is executed by at least one processor to perform the following steps:

• communicatively connecting a vehicle diagnostic device to at least two vehicle buses in the vehicle, each of the at least two vehicle buses being connected to at least one electronic control unit in the vehicle;
• determining a scan list corresponding to each of the at least two vehicle buses, the scan list comprising a to-be-scanned electronic control unit;
• and
• transmitting a scan signal on the at least two vehicle buses in parallel according to the scan list corresponding to each of the vehicle buses, to determine whether the to-be-scanned electronic control unit in the scan list exists in the vehicle.