| 摘要 |
The present invention provides an abnormality detecting device for a vehicle communication system comprising controllers and a diagnosis unit. The controllers store data to be transmitted by means of a communication IC to the diagnosis unit. When data is transmitted to a bus at a first timing, a communication abnormality, if any, around the communication IC is detected in response to the status of data stored in the communication IC at a second timing by a CPU. The CPU determines as an abnormality a case where, after transmission of data from the communication IC to the bus, the data is kept stored in the communication IC. The CPU determines as an abnormality a case where, after transmission of part of data to the communication IC, no data is stored in the communication IC.
|
