Vehicular relay device for the delivery of communication data transmitted from external device to requested in-vehicle electronic device only when in-vehicle device is authorized device

摘要

The requested in-vehicle electronic device is identified based on access request for requesting access to requested in-vehicle device output by external device (3). Authorization status of the electronic device is determined from the authentication information output from the device (3). The communication data output from the device (3) is routed to the requested device when the device is an authorized device. Independent claims are included for the following: (1) in-vehicle communication system; (2) failure diagnostic system; (3) vehicle management device; (4) server; and (5) detection and diagnostic program.