Take either the cold air return vent below the fridge off, or look under the passenger bed mattress for two screws, unscrew them and lift up the panel under the bed.
The water pump and tank are right there.
It should look something like this without the clear pink pipe:
Look for leaks around all the fittings.
When ours was new the strainer wasn't tight and leaked.
Have you downloaded Ed's excellent crowd sourced manual for the 24.1? You'll find a lot more info than what I'm providing here.