| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a vehicular electronic control device for efficiently transmitting vehicle identification information from one of a plurality of mounted electronic control units according to a request from an external scan tool. <P>SOLUTION: In the vehicular electronic control device 10, the priority of ECUs to transmit the VIN code to a tester 50 is predetermined, and if the ECU of higher priority (i.e., earlier response starting time) cannot transmit the VIN code due to failures or disconnection, the ECU of the next higher priority successively transmits the VIN code. When each ECU receives a VIN code request from the tester 50, each ECU monitors a communication line L, terminates the processing for the subsequent VIN code responses when the response of the VIN code is completed by other ECUs, and does not perform any response of the VIN code by himself. Therefore, the regulation in the amendment of OBDII "To respond only one VIN code by one vehicle" can be observed. <P>COPYRIGHT: (C)2004,JPO</p> |
