| 摘要 |
PROBLEM TO BE SOLVED: To suppress a loss of data such as a learned value or abnormality information stored in a nonvolatile memory.SOLUTION: In an electronic control unit having a self-shutdown capability to break an internal power supply when a predetermined condition is established after an ignition switch is turned off, plural banks (storage area) in which data items such as a learned value, abnormality information, and vehicular information are stored in groups classified under a predetermined rule are preserved in an available area in a nonvolatile memory. For example, while data is being written in a bank 1 during self-shutdown, if a restart manipulation of bringing the ignition switch from off to on is performed, restart is waited until writing of data in the bank 1 is completed. Thereafter, the electronic control unit is restarted. |
