Rear washer motor

Hi all. Can anyone tell me if there is a one way valve for the rear washer on a super S I have power to the motor and it pumps water out but nothing out the back. I am going to try and blow compressed air through it but I was wondering if there was a switch of valve somewhere??

Follow the pipes from the big bottle too. Could have sprung a leak somewhere under trim.

The motor is two direction, rotating in one way, will blow water to windshild, and rotating other direction will send water to rear, so, I supose, there must be a check valve somewhere, maybe inside the motor...

Try cleaning out the rear nozzle with a pin or paperclip. It's not unusual for washer jets to block up if they don't get used