Rear wiper washer problem

[Locomotive]

On my Roomster the rear washer has stopped producing water, the pump is working on both front and rear, but I think the pipe is disconnected from the rear nozzle, I have had the panel off the rear hatch, and there is nothing coming out, I've had the pipe off and blown through it, nothing, but there does seem to be water behind the panel on the nearside of the boot space . is there a connection behind that panel, which doesn't look easy to remove, any ideas?

 

[Robjon]

I think what might have happened is that the washer fluid within the pipe has frozen at the point where the pipe enters the tailgate. Opening the tailgate in this condition could have damaged the pipe.