| 摘要 |
Disclosed is a vehicle electronic control device equipped with a first microcomputer (2, 3), and a second microcomputer (3, 2) that is able to transmit and receive signals with the first microcomputer; wherein one microcomputer (2, 3) from among the first microcomputer and the second microcomputer outputs a PWM signal to the other microcomputer (3, 2), the other microcomputer detects the on-time of the PWM signal, performs a self-diagnosis corresponding to the detected on-time, and outputs the self-diagnosis results to the one microcomputer, and the one microcomputer diagnoses the other microcomputer on the basis of the self-diagnosis results. |
