Abstract: An electronic control unit includes a microcomputer and a monitoring section. The monitoring section monitors an operation of the microcomputer and outputs a reset signal to the microcomputer when determining that an abnormality occurs in the microcomputer. The microcomputer includes an acquisition section, a determination section, and a time calculation section. The acquisition section acquires time information from outside the microcomputer. When the microcomputer starts up, the determination section determines whether the microcomputer stopped the operation due to unknown cause.

Abstract: An electronic control unit includes a microcomputer and a monitoring section. The monitoring section monitors an operation of the microcomputer and outputs a reset signal to the microcomputer when determining that an abnormality occurs in the microcomputer. The microcomputer includes an acquisition section, a determination section, and a time calculation section. The acquisition section acquires time information from outside the microcomputer. When the microcomputer starts up, the determination section determines whether the microcomputer stopped the operation due to unknown cause.

Abstract: In an electronic control apparatus in a vehicle, while an operational state where an engine rotation speed is equal to or greater than a determination value continues during a vehicle stop state where an accelerator of the vehicle is in an OFF state, a condition satisfying counter is incremented. In cases that (i) a value of the condition satisfying counter becomes longer than a determination period, and (ii) a storage history flag indicates “0”, an additional value is added to the determination period. This lengthens the determination period that is used for comparing with the condition satisfying counter. Further, travel information at this time is stored in a storage portion; the storage history flag is set to “1”. While the storage history flag indicates “1”, another travel information is not stored into the storage portion.