jonesboys310 Posted June 30, 2016 Report Share Posted June 30, 2016 When trying to spray front washer nozzles the pump does not run, but when spraying rear nozzle it sprays fine, ford dealer told me it was a bad pump, replaced it and still no front pump! Also I can't find any fuses or relays for the front pump, the rear has a fuse and relay, but no fromt. Any help is appreciated! Thanks Quote Link to comment Share on other sites More sharing options...
enigma-2 Posted June 30, 2016 Report Share Posted June 30, 2016 Both the front and rear washer system use the same washer pump. When the windshield wiper module (wwmm) receives a signal from the multifunction switch, the wwmm closes the relay (inside the wwmm) and sends voltage to the pump. (Pump has two wires, one for front wash, the other for back wash). If your certain that the motor DOES run with a back wash, and NOT RUN with a front wash, could be a bad washer pump (already changed) or a bad windshield wiper motor. (Could be wiring as well, easy to isolate by testing for resistance with a vom). To test with a vom, pull the washer pump motor connector and connect + lead to terminal 2 of connector (- lead to a good ground; ignition on) and see if the resistace is <5 ohms. If >5 ohms pull windshield wiper motor connector (turn off ignition), and connect the + lead to terminal #7 and terminal #2 of the washer pump motor connector (using the - lead). (Tests to see if wiring is bad. Blue/white wire). If resistance is >5 ohms, locate and repair break in wiring. If <5 ohms, check the wiper motor connector for corrosion or bent pins. If connector looks ok, wiper motor is probably bad. Quote Link to comment Share on other sites More sharing options...
jonesboys310 Posted June 30, 2016 Author Report Share Posted June 30, 2016 Thank you for the fast response! I will ohm out the wiring tomorrow. I was not certain if the wiper motor was more likely at fault than the multifunction switch, but I will ohm out as you specified and see what I find and post back Quote Link to comment Share on other sites More sharing options...
omar302 Posted June 30, 2016 Report Share Posted June 30, 2016 Could be a bad wiper switch? Do the wipers wipe 3 times when turning on the front washer? As enigma-2 stated above, first make sure you are not hearing the pump when activating front washers. I had a nearly similar issue & it turned out that the hose under the hood (above the insulator) got loose & washer was being pumped on the under hood insulator, so even water leaks were not immediately noticeable. Quote Link to comment Share on other sites More sharing options...
jonesboys310 Posted June 30, 2016 Author Report Share Posted June 30, 2016 Yes they wipe 3 times, and courtesy wipe. I also verified that for sure the pump does not run on front at all. Quote Link to comment Share on other sites More sharing options...
jonesboys310 Posted June 30, 2016 Author Report Share Posted June 30, 2016 Yes they wipe 3 times, and courtesy wipe. I also verified that for sure the pump does not run on front at all. Quote Link to comment Share on other sites More sharing options...
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