| 摘要 |
A system of control devices are provided in a motor vehicle, which control devices communicate by way of one or more databuses of the motor vehicle. The system exhibits at least two diagnostics access points, by way of which the state of at least one of the control devices is diagnosed on the basis of a diagnostics request message; in particular, an error memory entry of a control device is requested by way of one of the diagnostics access points and is transmitted to the outside. In order to make the known system of control devices in a motor vehicle with at least one diagnostics access point more cost effective, a diagnostics request message, which is fed to the system by way of the first diagnostics access point, is recognized as such by an identification and forwarding system and is transmitted to a checking system. The checking system checks at least the authenticity of the diagnostics request messages and, optionally, forwards it to that control device, for which the diagnostics request message is intended.
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