Patent ID: 7711461

Claim:
A fault diagnosis data recording system for use in an automotive vehicle, which includes a plurality of nodes of the vehicle interconnected by a multiplex communication line, the fault diagnosis data recording system comprising: a first node of the vehicle configured to perform a fault detection of the first node; and a plurality of second nodes of the vehicle connected to the first node via the multiplex communication line, each of the plurality of second nodes configured to perform a fault detection of the second node and including a storage unit to store at least a part of result data of the fault detection performed by the first node, wherein the first node comprises a data transmitting unit configured to transmit result data of the fault detection performed by the first node to the plurality of second nodes via the multiplex communication line, and wherein each of the plurality of second nodes comprises a storage declaration frame transmitting unit configured to transmit, after a temporary storage of the result data, received via the multiplex communication line, in the storage unit of the second node is performed, a storage declaration frame, indicating that the second node has completed the temporary storage of the result data, to other nodes of the plurality of second nodes via the multiplex communication line.