Wipers not emitting fluid

The wipers on my 2008 XC90 has recently stopped emitting fluid from both of the window jets even though the wiper fluid reservoir is completely filled. The truck also has jets on the front head lights that are emitting fluid perfectly fine, however the front windshield jets have oddly ceased? I find it odd that both would be "clogged". They were working one day and the next day they weren't. I've read the manual and cannot find anything that mentions there being a reason for this when the reservoir is completely filled. Would you have any insight?