{
  "$type": "site.standard.document",
  "description": "A load drive circuit incorporated into an onboard electronic control device, the load drive circuit housing a diagnosis circuit for diagnosing load abnormalities, wherein diagnosis circuit failures are detected without affecting load drive control. When a failure has occurred in the diagnosis…",
  "path": "/patents/933706",
  "publishedAt": "2016-12-14T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60R16/02",
    "HITACHI AUTOMOTIVE SYSTEMS LTD [JP]"
  ],
  "textContent": "A load drive circuit incorporated into an onboard electronic control device, the load drive circuit housing a diagnosis circuit for diagnosing load abnormalities, wherein diagnosis circuit failures are detected without affecting load drive control. When a failure has occurred in the diagnosis circuit, vehicle operation is not affected because the diagnosis circuit does not have a function for controlling the vehicle, and there may be cases in which occupants riding in the vehicle do not notice the failure. Additionally, when a failure has occurred in the diagnosis circuit, the occurrence of the failure cannot be detected even by a vehicle control system as long as there is no function for detecting occurrences of failure in the diagnosis circuit. Specifically, when a failure has occurred in the diagnosis circuit, there is a possibility that the failure is unrecognizable to occupants and undetectable by a vehicle control system. When there is no need for the diagnosis circuit to diagnose load abnormalities, a determination of whether or not the diagnosis circuit is failing is made by sending a pseudo abnormality signal to the diagnosis circuit and confirming whether the diagnosis circuit can detect the sent pseudo abnormality signal as a failure.",
  "title": "LOAD DRIVE CIRCUIT"
}