| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic control device for automobile in which the use amount of a nonvolatile memory can be reduced.SOLUTION: A writing tool 200 transfers, to an ECU 100, a writing program including processing for changing communication environment of the ECU 100, processing for receiving data to be written to a ROM 110 (writing data) by the ECU 100, and processing for writing the writing data to the ROM 110. The ECU 100 develops the transferred writing program in a RAM 130 and then executes the developed writing program. |
