Patent ID: 6075438
Filing Date: 2000-06-13
Classification: G05B

Abstract:
A communication network for vehicle control having a plurality of control units (ECUs) connected to one another via communication lines for transmitting and receiving unique signals, each of the control units being connected to at least one of auxiliary input and output devices, each of at least two of the control units including a transmitter, a receiver, and a controller, and performing a diagnosis function and, each provided with an indicating means, the communication network comprising:a diagnosis mode signal generating means for setting at least the control unit provided with the diagnosis function to a diagnosis mode;the receiver in the control unit with the diagnosis function, according to the diagnosis mode, receiving the unique signal from at least one other control unit; andthe controller in the control unit with the diagnosis function, according to the diagnosis mode, determining the presence of a fault in the communication network on the basis of a combination of the unique signal received and an input signal from the auxiliary input device connected to the control unit with the diagnosis function, and driving the indicating means for indicating the result of diagnosis.