| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent hydraulic pressure from the other hydraulic pressure source from being supplied to a frictional engaging element in a normal supply time of the hydraulic pressure from a pressure adjusting valve while supplying the hydraulic pressure from the other hydraulic pressure source to the frictional engaging element corresponding to the pressure adjusting valve in a supply abnormal time of the hydraulic pressure from the pressure adjusting valve. <P>SOLUTION: A C1-switching valve 80 forms a first supply state capable of supplying C1-solenoid pressure Pslc1 to a clutch C1 when line pressure PL is supplied as holding pressure, modulator pressure Pmod is supplied as the holding pressure and B1-solenoid pressure Pslb1 is not supplied, forms a second supply state capable of supplying the line pressure PL to the clutch C1 when the modulator pressure Pmod is supplied as the holding pressure and the B1-solenoid pressure Pslb1 is supplied, and supplies the modulator pressure Pmod to the C1-switching valve 80 as the holding pressure in the supply abnormal time of the C1-solenoid pressure Pslc1. <P>COPYRIGHT: (C)2013,JPO&INPIT |
