| 摘要 |
A diagnostic tester for motor vehicles is described, and programmable control units having self-diagnostic means are provided for in the motor vehicle that, in program-controlled fashion, control, monitor the engine control and other systems of the motor vehicle, generate error codes and store them, and which can be connected to an external diagnostic tester via a diagnostic/test plug in the motor vehicle. The external diagnostic tester is equipped with a program recognition and program loading device. The program version contained in the connected control unit is queried and recognized using the program recognition device. Then, if the program available in the motor vehicle and recognized via the diagnostic/test plug, available in the connected control unit of the motor vehicle is not stored in the latest and most current version, the respective latest version is loaded by the program loading device into the program storage device of the corresponding control unit.
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