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Thread: HOW TO: Intermittent Wiper Problem Fix. AKA TSB Fix. Reply to Thread
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Topic Review (Newest First)
01-10-2015 01:01 PM
Nannou
Quote:
Originally Posted by cmciver View Post
I missed your reply earlier. My wiper works in slow and fast modes (and parks properly,) but not in intermittent or after the windshield squirt. When I noticed that the automatic mode with the squirt was also bad, I realized it must have been the Generic Electronics Module (GEM) so I got a used one on eBay. The GEM is the only component of this circuit that can do these timing functions. Waited until I had a chance to go swap it out, and lo and behold, it still didn't work.

I'm highly frustrated. Up to this point I had gotten a brand new wiper switch from the dealer (which didn't solve the problem.) Thinking I needed more knowledge to troubleshoot this properly, I ordered a Ford wiring diagram from Helm. This is where it got interesting. The wiring diagram calls out a windshield wiper relay and says its in the fuse/junction box, but the component locator elsewhere in the diagram says there's not one. The Ford parts guy, when he looked up the relay, said there wasn't one either. The car matches what the build data says. Every person I spoke to associated with Ford said the parts books/build data are the most accurate take on things.

Because one of my hats is electronics, I opened up the GEM, and among the other components (wireless locking, locks, turn signals, and such,) are a couple relays. I don't have anything that helps me figure out what does what, nor were there any visible failures, but I'll poke at it a bit on the replacement I took back out. The wiring diagram seems to imply that there are several relays in there, so there must be solid states ones hiding in there I can't identify yet.

So either one of two things has happened: Either my replacement part has the exact same fault or there's something else I should be looking at. I have to assume its the latter until I can prove otherwise.

I have never had an electrical problem with a car kick my a&&. A bad wiring diagram on an '84 BMW 733i got close, but there's no reason for this problem to exist. One of the data sources I've been using is wrong; I just have no proof.

Time to dig even deeper into the obscura that is the innerwebs. Sigh.
I'm having the same problem, and my rear wiper is not working as well!!
I don't know if it is related to the front wiper problem!!
Please keep us posted :)
01-09-2015 08:19 PM
Dinty Sigh is the right word, keep us posted on how you make out, this is getting more interesting. Good Luck :)
01-09-2015 08:13 PM
cmciver
Quote:
Originally Posted by Dinty View Post
I have a 07 as well. Mine just stopped working during our first bitter cold and snowy weather. I check the fuse for the front wiper mtr. # 56 it was good. So listened with the mtr. off and ignition switch to on and the front wiper motor is turning but no wiper blades are moving. I will go to the wrecker and get a linkage, when it warms up a bit.

As for your problem, you are correct there are no 18 and 19 relays. I then checked the Chilton books for the wiring diagram, confirmed no relays.
I would check the fuse 56 if its good I would check to see if power to the mtr. If there is power and its not running, change it out. if no power, I would look at the selector switch on the steering column. Good luck, hope this helped.
Our public library carries the chilton books online, so try your library for the wiring diagrams. they will give you the number and color of the wiring you should check.
I missed your reply earlier. My wiper works in slow and fast modes (and parks properly,) but not in intermittent or after the windshield squirt. When I noticed that the automatic mode with the squirt was also bad, I realized it must have been the Generic Electronics Module (GEM) so I got a used one on eBay. The GEM is the only component of this circuit that can do these timing functions. Waited until I had a chance to go swap it out, and lo and behold, it still didn't work.

I'm highly frustrated. Up to this point I had gotten a brand new wiper switch from the dealer (which didn't solve the problem.) Thinking I needed more knowledge to troubleshoot this properly, I ordered a Ford wiring diagram from Helm. This is where it got interesting. The wiring diagram calls out a windshield wiper relay and says its in the fuse/junction box, but the component locator elsewhere in the diagram says there's not one. The Ford parts guy, when he looked up the relay, said there wasn't one either. The car matches what the build data says. Every person I spoke to associated with Ford said the parts books/build data are the most accurate take on things.

Because one of my hats is electronics, I opened up the GEM, and among the other components (wireless locking, locks, turn signals, and such,) are a couple relays. I don't have anything that helps me figure out what does what, nor were there any visible failures, but I'll poke at it a bit on the replacement I took back out. The wiring diagram seems to imply that there are several relays in there, so there must be solid states ones hiding in there I can't identify yet.

So either one of two things has happened: Either my replacement part has the exact same fault or there's something else I should be looking at. I have to assume its the latter until I can prove otherwise.

I have never had an electrical problem with a car kick my a&&. A bad wiring diagram on an '84 BMW 733i got close, but there's no reason for this problem to exist. One of the data sources I've been using is wrong; I just have no proof.

Time to dig even deeper into the obscura that is the innerwebs. Sigh.
11-22-2014 04:49 PM
Mile30 AWESOME write-up! I'm gonna throw rep all over the place once I get to a real computer.

I had my front wipers crap the bed a month or two ago. I hit the stalk and they wiggle but don't move more than that. The other thing I noticed was the that they FINALLY "parked"... I've known the park function wasn't working correctly since '07, but I got over it to save money. I'd just fiddle with the timing of the swipe so they'd stop out of view.
11-18-2014 03:39 PM
Dinty
Quote:
Originally Posted by cmciver View Post
I was so delighted to find such a detailed solution to this exact wiper problem that just popped up on my 07 Focus! Got ready to put some relays on order, then thought it best to go have a look at my car to confirm my relay location and type.

There aren't any relays in the R18/R19 location! No relays in the front fuse box that relates to the wipers, either.

Nothing on the web helps me find where the relays should be.

Any clues out there?

Thanks!
I have a 07 as well. Mine just stopped working during our first bitter cold and snowy weather. I check the fuse for the front wiper mtr. # 56 it was good. So listened with the mtr. off and ignition switch to on and the front wiper motor is turning but no wiper blades are moving. I will go to the wrecker and get a linkage, when it warms up a bit.

As for your problem, you are correct there are no 18 and 19 relays. I then checked the Chilton books for the wiring diagram, confirmed no relays.
I would check the fuse 56 if its good I would check to see if power to the mtr. If there is power and its not running, change it out. if no power, I would look at the selector switch on the steering column. Good luck, hope this helped.
Our public library carries the chilton books online, so try your library for the wiring diagrams. they will give you the number and color of the wiring you should check.
10-28-2014 08:41 PM
cmciver I was so delighted to find such a detailed solution to this exact wiper problem that just popped up on my 07 Focus! Got ready to put some relays on order, then thought it best to go have a look at my car to confirm my relay location and type.

There aren't any relays in the R18/R19 location! No relays in the front fuse box that relates to the wipers, either.

Nothing on the web helps me find where the relays should be.

Any clues out there?

Thanks!
10-28-2014 03:38 AM
ZX4SES2005
Quote:
Originally Posted by shlbygt View Post
That is the standard relay. You need the silent version.
I snag then from Focus' at the junkyard.
Thank you for the response shlbygt! Do you (or anyone else) know where to get a silent relay for the intermittent wipers, besides a junkyard? I've only checked a few auto parts stores but all i can find are the standard relays. Any places I can order it online? Thanks much!
10-27-2014 06:35 PM
shlbygt
Quote:
Originally Posted by ZX4SES2005 View Post
Hi all, I replaced my front wiper relay, but now it clicks every time the wipers move, but only when in the intermittent setting. I don't have a rear wiper. Any suggestions?
That is the standard relay. You need the silent version.
I snag then from Focus' at the junkyard.
10-24-2014 06:45 PM
ZX4SES2005 Hi all, I replaced my front wiper relay, but now it clicks every time the wipers move, but only when in the intermittent setting. I don't have a rear wiper. Any suggestions?
10-20-2014 11:21 PM
bsj2312 Hi,

I have the same problem with my wipers not parking or working on the intermittent setting. However, when I replace the relay, the wipers won't turn off. Any ideas on what the problem may be now? Any help is appreciated.
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