Characteristics of a semiconductor device are improved. If the electric motor is in an inoperable state when a gear currently used in the transmission is shifted to a target gear, after disengaging the clutch and bringing the transmission unit into a neutral mode, the vehicle ECU implements temporary engagement control for temporarily engaging and then disengaging the clutch, selects the target gear, and then engages the clutch again. The upper passage has a lower end in communication with an interior of the lower passage and an upper end in communication with a hole in the nozzle.