Millenia L V6-2.5L DOHC (1997)
Valve Body: Description and Operation
2-3 Shift Valve
The 2-3 shift valve automatically shifts between 2nd and third gear.
The 2-3 shift valve switches the paths for the line pressure applied to the 2-3 shift valve. The shift solenoid B ON-OFF signal is controlled by the
transmission control module.
With the shift solenoid B ON, line pressure (14) is drained by the shift solenoid B. Consequently, spring force and line pressure (7) push the valve to the
right, moving the valve to 2nd gear position. In 2nd gear, line pressure path (3) is closed and line pressure (13) is drained.
In S and L ranges, line pressure (16) from the 3-4 shift valve is transmitted to (28), applying the coasting clutch. When vehicle speed becomes high, the
transmission control module turns OFF the shift solenoid B. As a result, line pressure (14) becomes equal to line pressure (1) and surpasses the
combination of spring force and line pressure (7). This forces the valve to move to the left, shifting to third gear.
In third gear, line pressure (3) is transmitted to (13), applying the 3-4 clutch with a slow pressure increase by the bypass valve and 2-3 accumulator
operation.
