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Windshield Washer Relay? 2008 F53

 
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Old 02-23-2019, 08:21 PM
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Windshield Washer Relay? 2008 F53

Ive tried researching this and found plenty on the wiper pulse/delay module but not much on the washer function. I have a 2008 F53 motorhome and the windshield washer doesnt work when I hit the button. I get a click from a relay in the module, wipers do their thing, but no fluid on the windshield. When I apply power to the pump I get a nice stream off the windshield and down into my left ear, so the pump works.

Before I buy a $140 module that probably isnt returnable, Id like to know if there is a proceedure to test mine - so many ohms from pin x to pin y or something like that. Or if this is a common obvious problem and I should just buy a module. And no its not the 30 amp fuse in position 11 but maybe some other location? In line maybe? I couldn't find any others. part # is YC2T-17D539-AA.

I just drove the thing from Michigan to Calif last week, snow all the way, and it was not fun without the washer. When I stopped to clean the windshield (a frequent necessity) windex would freeze on the glass. So it would be nice to fix this.

Thanks in advance and if there is a better place to post this please let me know. Pic added as an afterthought

ok just figured out where I posted this - moving to another forum but for now Ill leave it up heretoo.
 
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Old 03-05-2019, 06:31 AM
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Yeah, you're in the wrong forum section, this one's for the Transit. Maybe a mod will move this to the Super Duty section.

If F11 were blown, the wipers wouldn't operate either.

With the module connected and the ignition switch in RUN, backprobe the black/white wire on pin 4 of the module. while pressing the WASH button, you should see battery voltage on that pin and the washer is supposed to run. If you do measure proper voltage, check for an open wiring concern between pin 4 and the + lead of the pump motor. If no voltage was measured, disconnect the pump motor at the motor end and at the module and check for a short to ground on the black/white wire. If no short, then the module is bad.
 
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Old 03-05-2019, 09:40 AM
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Thanks SHO,

I got to that point after ringing out the black/white wire and realized I hadnt checked the ground connection, which for whatever reason turned out to bad. Everything else works and I didn't feel like digging into the harness and tracing it back, so I just ran another ground wire and scabbed it in - not the best fix, so after the other 316 things on my fixit list are done, I'll probably trace it back to the problem. I really wish "bad ground?" had popped into my head on the road. But Ive had bad wiper relays on other Fords and no reason to suspect the harness and since everything elae worked. I flew out to Michigan to pick it up didnt have much of a tool kit and no meter. Oh well....
 
 


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