Patent ID: 9482201
Filing Date: 2016-11-01
CPC Classification: B60R,F02D,F02P,H02H,H02J,Y02T

Claim Text:
1. A method for testing a supply circuit for at least one ignition circuit which includes at least one energy accumulator, a first conversion circuit which raises a supply voltage to a specified voltage level and charges the at least one energy accumulator, and a controllable discharging circuit which selectively discharges the at least one energy accumulator, the at least one energy accumulator being connected via a first coupling diode to the at least one ignition circuit, and the supply voltage being applied via a second coupling diode to the at least one ignition circuit, the method comprising: maintaining a controllable charging circuit in deactivated state from the time of system start-up until completion of a supply voltage test such that the at least one energy accumulator is disconnected from the first conversion circuit; following the system start-up, ascertaining a state of charge of the at least one energy accumulator and comparing the state of charge to the at least one specified threshold value; and ascertaining, as a function of the comparison, one of a faultless coupling of the supply circuit or at least one fault.