IN-VEHICLE ELECTRONIC CONTROL DEVICE

摘要

An in-vehicle electronic control device for diagnosing the details of an abnormality of a microcomputer appropriately is provided.. A monitoring function (23) for detecting a malfunction by monitoring input/output of a main function (22) of a hardware part (21) and a monitoring function (26) for detecting an abnormality by monitoring the calculating result of a main function (25) in a software part (24) are provided in a microcomputer (MCU (2).) The main function to be monitored is implemented with a different structure than the malfunction/abnormality monitoring function.. Furthermore, a malfunction processing circuit (5) for monitoring an abnormality of the microcomputer (MCU (2)) is provided outside the microcomputer (MCU (2)).