公开(公告)号：US20240042951A1

公开(公告)日：2024-02-08

申请号：US18286261

申请日：2022-01-27

Applicant: Hitachi Astemo, Ltd.

Inventor： Naomichi YAMAGUCHI ,  Yuta TANAKA ,  Jin SATO

IPC: B60R16/023 ,  G01R31/54

CPC classification number: B60R16/0232 ,  G01R31/54

Abstract: A vehicle-mounted control device capable of detecting disconnection failure of a GND line 104 of an electronic control device 100 without adding a circuit and identifying between disconnection failure of the GND line 104 of the electronic control device 100 and disconnection failure of an electric load is realized. The vehicle-mounted control device 100 is supplied with a drive voltage from a voltage source 103 via the GND line 104 and drives a plurality of electric loads. Further, the vehicle-mounted control device 100 includes a voltage monitoring unit 114 that measures a voltage of the voltage source 103 to be supplied to the electric load; a current monitoring unit 114 that measures a current flowing through the electric load; a driving unit 115 that adjusts an energization amount of the electric load; a current cutoff determination unit 201 that determines whether the driving unit 115 cuts off the current flowing through the electric load; and a disconnection identification diagnosis unit 202 that identifies between a disconnection failure of the electric load and a disconnection failure of the GND line 104.