| 摘要 |
PROBLEM TO BE SOLVED: To avoid an evil (for example, a shock) by failure of a solenoid valve.SOLUTION: In a vehicle, hydraulic pressure supplied to a lockup clutch (LUC) and a power transmission clutch (FC) is switched in response to output of first and second ON-OFF solenoid valves (S1 and S2), and an ECU controls the S1 and S2 in any of a plurality of control modes including a first mode of releasing the LUC and engaging the FC by turning on the S1 and turning on the S2, a second mode of releasing the LUC and engaging the FC by turning off the S1 and turning off the S2 and a third mode of supplying output hydraulic pressure of a linear solenoid valve to the LUC and engaging the FC by turning off the S1 and turning on the S2. The ECU prohibits transfer to the third mode (S12), when releasing the FC (YES in S11) in a control mode except for the third mode (NO in S10). |
