I had an issue with mine too.
From memory, the washer bottle is on the passenger side of the engine bay. To access the pumps (both front & back) you need to get at the washer bottle from inside the wheel arch. You dont need to remove the washer bottle.
Remove the front wheel & remove the inner liner. These are only held in by plastic trim clips, they are tapered like Christmas trees.
When you can get at the washer bottle, you will see both the front & rear pumps, they are just a push fit. I would remove & clean both out as washer fluid can emulsify & bung up the in built filters.
Wash your washer bottle out thoroughly while its all apart & after cleaning out the pumps, re fit & try with just water.
Failing that, they are knackered but at least you know how to change em
Must be simple enough cause I did it....... well, it was the butlers day off