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if there is no power to the wiper motor and the fuses and relays are fine, I would next suspect the switch/stalk that is used to trigger the wipers, that could be bad
if the issue is not corrected with a new switch, then it is possible that the general module has failed - this is the module which controls the wipe/wash functions
you definitely want to be sure you checked the correct fuses and relay first.
of course, there could always be a broken wiring somewhere also, but that is rare and hard to predict
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