Washer fluid pump is not working, is it the fuse?

Tiny
SHOEE246
  • MEMBER
  • 2012 VOLKSWAGEN PASSAT
  • 5 CYL
  • 2WD
  • AUTOMATIC
  • 71,000 MILES
It just stopped working and when you pull the handle you hear no noise.
Wednesday, March 23rd, 2022 AT 7:04 AM

4 Replies

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
It could be a fuse, but it could also be the pump, switch, or a wiring issue.

So, let's start by checking this wiring diagram for the fuses and see if there is a fuse issue:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

If the fuses are okay, then we need to go to the motor and push the switch to see if you have 12 volts.

https://www.2carpros.com/articles/how-to-check-wiring

If you do, then the pump is the issue. If you don't then we need to go to the switch and see if you have voltage coming out of it. If not, then the switch is the likely issue.

Please run through this and let us know what questions you have on this.

Thanks
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Wednesday, March 23rd, 2022 AT 4:59 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,650 POSTS
Hi,

I attached the wiring schematic for the washer pump motor below. Note it receives power from fuse 20 in fuse panel B (under the hood).

The fuse certainly causes a problem. If you look at pic 2, I attached a pic showing what fuse to check. In addition to checking the fuse, also confirm there is power to and from it. Here is a link that explains how it's done:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Let me know what you find or if you have other questions.

Take care,

Joe

See pics below.
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Wednesday, March 23rd, 2022 AT 5:07 PM
Tiny
SHOEE246
  • MEMBER
  • 2 POSTS
  • 2012 VOLKSWAGEN PASSAT
  • 5 CYL
  • 2WD
  • AUTOMATIC
  • 71,000 MILES
Where is it located in the passenger cabin or under the hood and what amperage is it?
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Friday, March 25th, 2022 AT 3:41 PM (Merged)
Tiny
BORIS K
  • MECHANIC
  • 795 POSTS
Hello,

The windscreen washer pump does not have a fuse.
It is directly powered by the vehicle electrical system control module, see diagram below.
The output is switched for either windscreen or rear window operation.
To test the power supply to the pump you will need to locate the washer pump at the bottom of the washer fluid reservoir, see image 2 below
Next disconnect the connector and, using a test light, probe either circuit or activate the pump from inside the vehicle.

How to use a test light.
https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

If voltage is given when activating the pump, then the pump itself is most likely faulty.

Please let us know how you get along.

Cheers, Boris
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Friday, March 25th, 2022 AT 3:41 PM (Merged)

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