R Position: Driving in reverse gear

When R is selected, the PCM turns shift solenoid valve A ON, and shift solenoid valve A uncovers the shift solenoid valve A pressure port (SA) to shift valve A. Shift valve A is moved to the right side to switch the line pressure port (3') and reverse CPC pressure (3B) leading to the 5th clutch. Line pressure (3) flows to the manual valve via the servo valve and shift valve A, and becomes 5th clutch pressure (50) at the manual valve. 5th clutch pressure (50) flows to the 5th clutch, and the 5th clutch is engaged by the line* pressure.