| 摘要 |
An electronic control unit performs a process that stores into a buffer selected diagnostic trouble codes (DTC) currently in a volatile trouble code storage by selecting, from among multiple codes, a code that is to be saved in an EEPROM, when an ignition switch of a vehicle is turned off. Further, the DTC stored in the buffer is written in the EEPROM. If the electronic control unit receives, from a scan tool a command that instructs erasure of the DTC in the volatile trouble code storage, the above-described process is performed before erasing the DTC from the volatile trouble code storage.
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