A malfunction detection method detects a malfunction in an electronic control device. The electronic control device includes a normal power supply terminal connected to a normal power supply mounted on a vehicle, a starting power supply terminal connected to a starting power supply, a controller activated by supply of a normal voltage, and a wake-up circuit having a wake-up switch to open and close a power supply path from the normal power supply terminal to the controller. The wake-up circuit turns on the wake-up switch when a starting voltage input to the starting power supply terminal is equal to or greater than an ON threshold. The malfunction detection method includes determining by the controller that the wake-up switch has an ON sticking malfunction when the normal voltage is equal to or greater than a threshold and the starting voltage is less than the ON threshold.
MALFUNCTION DETECTION METHOD AND ELECTRONIC CONTROL DEVICE CAPABLE OF DETECTING MALFUNCTION
28.03.2024
Patent
Elektronische Ressource
Englisch
Malfunction detecting device and malfunction detecting method for cooling device
Europäisches Patentamt | 2015
|