Lifting system fault diagnosis device, lift-up circuit control device and vehicle

摘要

A boosting converter and a boosting control unit are mounted on a vehicle. A failure diagnosis unit makes a failure diagnosis of an atmospheric pressure sensor based on a detection result of the atmospheric pressure sensor and on a detection result of an intake pressure sensor detecting engine intake pressure that changes in accordance with a change in the atmospheric pressure. Boosting control unit controls an output voltage of the boosting converter based on the detection result of atmospheric pressure sensor and the detection result of intake pressure sensor.