Vehicle diagnostic system

摘要

The present invention relates to a vehicle diagnostic system 1 comprising an electronic control unit 2 for controlling and monitoring vehicle equipment, a radio communication means 3 for transmitting a vehicle diagnostic information D to a telecommunication equipment 6 located outside the vehicle or for communicating between the vehicle and the telecommunication equipment 6 located outside the vehicle and for transmitting a communication diagnostic signal Q to the electronic control unit 2 and receiving a response signal A to the communication diagnostic signal Q, and a communication line 4 for connecting the electronic control unit 2 and the radio communication means 3 wherein the response signal A is utilized to determine if the communication line 4 is properly functional.