Mitsubishi Jidosha Kogyo Kabushiki Kaisha

Toshiyuki Abe

Yusuke Hara

Akira Yasuda

Yoshiaki Sano

Kenji Hayase

Toshiki Fukaya

Yuji Mizutani

A communication error detecting method for a bus communication network including a first type ECU which is powered on whether an ignition key is situated at an ON position or a cranking position and a second type ECU which is powered on when the ignition key is situated at the ON position and which is powered off when the ignition key is situated at the cranking position. The communication error detecting method includes: selecting a predetermined detecting mode from a plurality of detecting modes according to a combination of the type of a subject ECU and the type of a corresponding ECU; and performing an error detection according to the predetermined communication error detecting mode so selected.

Communication error detecting method for bus communication network in vehicle

To connect a computer to an electronic control unit of a vehicle and diagnose the trouble state of the vehicle, the computer is connected to a server storing trouble diagnosis data required for trouble diagnosis, and the trouble diagnosis data is read from the server, trouble diagnosis is proceeded with in an interactive mode with the computer using the read trouble diagnosis data, and vehicle data is automatically acquired from the electronic control unit using the read trouble diagnosis data.

Vehicle trouble diagnosis method, vehicle trouble diagnosis apparatus and computer-readable record medium recording trouble diagnosis program

A failure diagnosis apparatus for diagnosing a failure in a vehicular electronic control system includes a plurality of electronic control related members mounted on a vehicle, a multiple communication line connected to the plurality of electronic control related members as communication elements, such that communication signal information received from the multiple communication line is analyzed by an analyzing portion. A communication system region which may have failed in the multiple communication system is specified based on presence or absence of communication of the electronic control related members, and the electronic control related member which may have failed is specified based on a data content of a communication signal provided from communication information. Respective states are displayed by proper value data and detected value data of the electronic control related members.

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Aichi, Japan

Toshiyuki Abe