I have replaced the Wiper motor, and the wiper switch assembly and still no wipers, Is there a way to test the WCM? This is on a 1992 F150 4x4. Or any other ideas on what the problem could be? Thanks...Cody

 

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The answer is no you replace the module when all other tests pass. Usually when the module is bad you will have high speed but no low or intermitten. Get a copy of the testing procedures you can wire the motor up on the outside and see if will run. Make sure the switch is grounded. That is basically the tests.