Windshield Wipers stopped working...

[jataga]

Well, this is interesting. My windshield wipers stopped working. The sprayers work, the rear windshield wiper works but not the front.

On the interior kick panel fuse box and checked the fuse and it was fine. I pulled the 20amp fuse for the windshield wipers and swapped it with a known good fuse. No go. I looked at the fuses/relays under the hood but I didn't see anything related to the windshield wipers.

Has anyone else had this issue? Any possible suggestions?

 

[TheDurk]

Well, this is interesting. My windshield wipers stopped working. The sprayers work, the rear windshield wiper works but not the front.

On the interior kick panel fuse box and checked the fuse and it was fine. I pulled the 20amp fuse for the windshield wipers and swapped it with a known good fuse. No go. I looked at the fuses/relays under the hood but I didn't see anything related to the windshield wipers.

Has anyone else had this issue? Any possible suggestions?

If washer works, it's not a fuse issue. It's really down to the combo switch, the motor, or the wiring in between. If you can use a DMM, check out the attached EWD and run the tests at the combo switch in the Service Hints. That should tell you if it's the switch or not. Post back if you need help understanding your results.

This is from the 2002, but I checked against my paper '99 EWD and it is identical:

http://tacoma.site40.net/4Runner_96-02_Repair&Wiring/techinfo.toyota.com/ileaf/ewdtmc2/ewdtmpdf/ewdsourc/2002/024runne/systemci/042fww.pdf

EDIT: Oh yeah, Pin-out for Plug C15 is here on p. 237:

http://tacoma.site40.net/4Runner_96-02_Repair&Wiring/techinfo.toyota.com/ileaf/ewdtmc2/ewdtmpdf/ewdsourc/2002/024runne/connecto/connecto.pdf

 

[jataga]

thanks for the help. Now I need to figure out how to actually use my DMM besides just checking battery voltage and resistance. My 4Runner is not my primary vehicle and when I opened the hood a few days ago, I found a nest up against the passenger firewall. I'm wondering if something to in there and chewed up the wires. Fun.

When I turned on the AC a few days ago, i hear all kinds of crap rattling around in the fan...

 

[TheDurk]

By the way, you should test all speeds, including intermittent. Does the wiper function when you use the washer? That's a separate circuit.

If I were doing it, I'd also jump 12V+ to the Light Green wire leaving the switch (briefly). If all is well at the motor, the wiper should operate at High Speed.

 

[bararonson]

thanks for the help. Now I need to figure out how to actually use my DMM besides just checking battery voltage and resistance. My 4Runner is not my primary vehicle and when I opened the hood a few days ago, I found a nest up against the passenger firewall. I'm wondering if something to in there and chewed up the wires. Fun.

When I turned on the AC a few days ago, i hear all kinds of crap rattling around in the fan...

Oh boy, that sounds like bad news

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[OldManKamps]

Oh boy, that sounds like bad news

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Newer vehicles are using a wire-coating that's more eco-friendly made out of some different material. Turns out its sweet smelling and tasting so there's lots of issues of animals chewing through whole wire harnesses :lol:

 

[DjGogo]

2000 4Runner no power to the Fuse 20A for Wipers

I'm having an issue with my 2000 Toyota 4runner. A cluts started messing with the wiper switch and it stopped working half way. First thing I checked was the fuse, I am not getting no power to fuse 20A under the dash. I have checked the wiring diagram and all the other fuses that come from the AM1 are working. I have checked them all with my Light tester, yet the only one that does not have power is the Windshield wiper fuse. I do test it when the car is on. Also I have pulled the fuse and tested for power, nothing. I finally got another wiper switch to eliminate that possibility and nothing still. I am baffled at what this could be about. Wondering if anyone has had this issue.

2000 Toyota 4runner
2.7L 2WD
300K+ miles
Lift kit

 

[brillo_76]

Newer vehicles are using a wire-coating that's more eco-friendly made out of some different material. Turns out its sweet smelling and tasting so there's lots of issues of animals chewing through whole wire harnesses [emoji38]

That wire coating is soy based. All squirrels, chipmunks love that soy protein. So if you live in areas that have lots of wild animals watch out. The critters ate the witing on my brothers leased rav 4 several years back and the stealership charged a fortune to splice wires. He only took it in becaused it was leased. No way is it a good idea to use these new insulation on wires. I guess the tree huggers are happy with insulation that's more environmentally friendly. Probably the the wild animals too. I am not sure when that insulation change occurred. I just have seen a pile of animal damaged vehicles especially in rural areas.

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[MaineRunna]

That wire coating is soy based. All squirrels, chipmunks love that soy protein. So if you live in areas that have lots of wild animals watch out. The critters ate the witing on my brothers leased rav 4 several years back and the stealership charged a fortune to splice wires. He only took it in becaused it was leased. No way is it a good idea to use these new insulation on wires. I guess the tree huggers are happy with insulation that's more environmentally friendly. Probably the the wild animals too. I am not sure when that insulation change occurred. I just have seen a pile of animal damaged vehicles especially in rural areas.

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Yes, rodents love chewing wires. I just repaired a customer's Hyundai Santa Fe that had a bouncing, cutting out speedometer. The engine, transmission and ABS data showed steady, accurate speed at all times, so like a fool I performed no further testing and just installed a used gauge cluster. When the symptoms remained unchanged I decided to check the VSS wiring after I noticed that it happened only during deceleration. I found that a mouse had chewed the three wires pretty bad. I repaired them, fixed the problem and because I'm an honest guy, am the proud owner of a $100 used 07 Santa Fe instrument cluster that I will probably never need. I have heard, though don't know if it is true, that Toyota now puts capsaicin oil in their wire insulation.

 

[jbtvt]

That wire coating is soy based.

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When you spot a chubby squirrel with gynecomastia you'll likely have found your perp. Also be on the lookout for "coexist" stickers decorating the outside of his nest.

 

[GG2000-4Runner]

Did you find the cause? I have the exact same problem.

I found the reason why no power is getting to the fuse (at least in my situation). I was looking at the wrong fuse terminal. The diagram was confusing because of the blank spot along with one of the previous owners swapping the right and left side fuses. I figured it out when I read this post on StackExchange about halfway down showing this image of the diagram and the fuse panel (the lines overlaid are incorrect if you can't already see).

(Side note: the last owner was the son of a Toyota parts manager and the second was a Toyota mechanic.)

Now I have a another problem: The horn sounds every time I start the vehicle. I pulled the horn fuse, and it still sounds. I hope I didn't short a wire when I took the entire fuse box off to diagnose the wipers. Going to try and figure this one out now.

 

[Rushthezeppelin]

When you spot a chubby squirrel with gynecomastia you'll likely have found your perp. Also be on the lookout for "coexist" stickers decorating the outside of his nest.

I'm dying right now :rofl:

 

[GG2000-4Runner]

Now I have a another problem: The horn sounds every time I start the vehicle. I pulled the horn fuse, and it still sounds. I hope I didn't short a wire when I took the entire fuse box off to diagnose the wipers. Going to try and figure this one out now.

BE CAREFUL WHEN PUTTING BACK THE FUSE PANEL COVER

If you do not align the cover perfectly before pressing it back on the box, then one of those little dividers on the inside of the cover will catch on one of those little metal tabs and possibly push it into the tab next to it. When I reassembled the box and connected the battery, the box started to smoke. I bent the metal piece back and reinstalled everything. I don't know how, but the horn is working normally now; however, I now have a problem with the left blinker not working. It doesn't work with when I press the hazard button either. Trying to diagnose it now. I'm sure once I fix the blinker, something else is going to stop working. Darn gremlins always up to something.

 

[brillo_76]

BE CAREFUL WHEN PUTTING BACK THE FUSE PANEL COVER



If you do not align the cover perfectly before pressing it back on the box, then one of those little dividers on the inside of the cover will catch on one of those little metal tabs and possibly push it into the tab next to it. When I reassembled the box and connected the battery, the box started to smoke. I bent the metal piece back and reinstalled everything. I don't know how, but the horn is working normally now; however, I now have a problem with the left blinker not working. It doesn't work with when I press the hazard button either. Trying to diagnose it now. I'm sure once I fix the blinker, something else is going to stop working. Darn gremlins always up to something.

Is it both front and back? Maybe a bulb burned out on your hazards.

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[shadow247]

Newer vehicles are using a wire-coating that's more eco-friendly made out of some different material. Turns out its sweet smelling and tasting so there's lots of issues of animals chewing through whole wire harnesses :lol:

The 4Runner does not use the Soy based wiring insulation that you are referring to. That did not start until the 5th gen actually.

 

[GG2000-4Runner]

Is it both front and back? Maybe a bulb burned out on your hazards.

It was front, back, and the console, but I somehow fixed it. I pulled everything apart and mapped out every wire related to the blinkers. I didn't see any problems with the multimeter, so I don't know what was wrong. I did end up replacing the relay before I put it back together, so maybe it was that. Wouldn't the right side not work either though if it was the relay? For all I know, it could have been a gremlin that I happen to scare off :crazy:

 

[brillo_76]

It was front, back, and the console, but I somehow fixed it. I pulled everything apart and mapped out every wire related to the blinkers. I didn't see any problems with the multimeter, so I don't know what was wrong. I did end up replacing the relay before I put it back together, so maybe it was that. Wouldn't the right side not work either though if it was the relay? For all I know, it could have been a gremlin that I happen to scare off :crazy:

What year is your rig?

 

[GG2000-4Runner]

1999 sr5

 

[brillo_76]

Here is the Electrical Wiring Diagram for that circuit on the Hazard warning light. Just in case it goes crazy again

 

[brillo_76]

The 4Runner does not use the Soy based wiring insulation that you are referring to. That did not start until the 5th gen actually.

I wish they find an insulation the animals do not like. As that soy based wiring is like the Chinese buffet for those furry critters.