I'm in the same boat .... wipers fine but no sound from the pump. Read that they were on the same fuse so all good there if that's correct. I can only think I will have to access the pump and check wiring/motor function. Does anyone have any other thoughts or experience?
Should have said mine is a T6 T32 Highline - 2018 plate.
Raise van and remove near side front wheel exposing the wheel arch liner.
At the front lower part of the liner there is an access *hole that is exposed by removing the obvious preformed cover.
When this cover is removed you will see the washer pump right in front of you.
Working from bottom to top remove liner securing screws up to the top of the liner.
Look underneath the front of the liner and remove the two further securing screws.
This will enable you to flex the liner to give two hand access to the pump.
(right hand via the *access hole and left hand behind the liner)
If the reservoir has water, place a receptacle beneath the pump area.
Carefully release the lines that are attached to the bottom of the pump.
The pump can now be removed by easing it vertically until freed from retaining clips. Do not pull the pump out towards you.
When the pump is free it can be disconnected from the loom , the connection plug is on the top of the pump.
Before you spend hard earned on a new pump …Give it a few sharp knocks in my case it released the pump and it worked again straight away.
Test by connecting the 12 volt plug and with any luck you will hear it working.
This means all is well with the pump so re connect the water pipes check spray before re assembling.