Patent ID: 7026725
Filing Date: 2006-04-11
Classification: F16H

Abstract:
1. A control circuit abnormality determining device for a vehicular power transmission apparatus, comprising: a power transmission unit for transmitting a driving force of an engine to an output member; an actuator for switching operations of said power transmission means; a driver circuit for driving said actuator; a power supply circuit for supplying an electric power to said driver circuit; an interruption unit for interrupting the electric power fed to said driver circuit through said power supply circuit; a control unit for selectively outputting an interruption signal to said interruption unit to interrupt supply of the electric power to said driver circuit; and an abnormality determining unit for determining failure of said power supply circuit when the electric power is fed to said driver circuit at a time when the interruption signal is being output to said interruption unit or when the electric power is not fed to said driver circuit at a time when the interruption signal is not being output to said interruption unit.