| 摘要 |
PURPOSE:To make a frictional engaging means engageable even at time of failure in a control valve. CONSTITUTION:An S port 85 of a B1 control valve 80, controlling the supply or exhaust of hydraulic pressure for a first brake B1 is a port for exhausting pressure from this first brake B1 at time of shifting from fourth gear speed to third gear speed, but an oil passage 116, where hydraulic pressure is supplied at time of selection of both S and L ranges, is connected to this port, whereby even if the B1 control valve 80 sticks it into a state of exhausting pressure from the first brake B1 at a D range, the first brake B1 is made engageable with both these S and L ranges. |
