Overrun Clutch Solenoid Valve Control
The overrun clutch solenoid valve is operated by an ON-OFF signal transmitted by the TCM to provide overrun clutch control (engine brake control).
When this solenoid valve is ON , the pilot pressure drain port closes. When it is OFF , the drain port opens.
During the solenoid valve ON , pilot pressure is applied to the end face of the overrun clutch control valve.