Cooling fan fuse box location

Tiny
IDALIS
  • MEMBER
  • 2003 VOLKSWAGEN PASSAT
  • 190,000 MILES
My cooling fan is not working and cannot locate the fuse for it. Can anyone tell me where to find the cooling fan fuse box? 2.8 L v6.
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Monday, February 13th, 2017 AT 10:00 AM

11 Replies

Tiny
CARADIODOC
  • EXPERT
There are two fuses under the left side of the dash. Fuse number 42 is a 40-amp fuse, and fuse number 51 is a 5-amp. Both circuits feed an electronic fan control module that is mounted on the left front frame rail, near the vacuum reservoir.
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Monday, February 13th, 2017 AT 1:09 PM
Tiny
IDALIS
  • MEMBER
Is this under the hood and I can't locate the box at all and I need detail by detail a little bad at this
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Monday, February 13th, 2017 AT 2:33 PM
Tiny
CARADIODOC
  • EXPERT
My source shows almost every part, ... Except the fuse box and fan control module. They only list a description in the component locator guide. The module is listed as, "on the left front frame rail, near the vacuum reservoir". The fuse box, and all three relay panels, are listed as "under left side of dash". I added a nifty red arrow to the third drawing where it sounds like the control module is buried. From looking at the diagram, it appears the module has one two-wire connector, another six-wire connector that has only four wires in it, and two more wires that appear to be hard-wired and not in a connector.

Check the radiator fan to see if it spins freely by hand, or if it's tight. When you fling it with your fingers, it should coast to a stop after a few revolutions. If it doesn't, it has tight bearings. That will cause it to blow the 40-amp fuse. When the insane engineers feel the need to add an unnecessary computer module to the circuit, that can also be damaged by a tight motor, so be sure to replace the motor, if it is tight, before replacing other parts, otherwise those new parts can be damaged again.
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Monday, February 13th, 2017 AT 3:37 PM
Tiny
KZCPD
  • MEMBER
  • 2003 VOLKSWAGEN PASSAT
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 80,000 MILES
Hi 2carpros, Last week when the outside temp turned 90 degrees I noticed that I wasn't getting cold A/C from my 2003 volkswagen passat V6. I looked at the engine and noticed that the radiator cooling fan wasn't working but the A/C does work when the car is going over 30 mph. I took the car to the dealer and they replaced the A/C pressure switch but that didn't fix the problem. I was thinking that it could be the fan itself but the fan does sometimes work when the outside temp is cool. I was then thinking it could be a relay but I dont know which relay it is. The relays have different numbers on them. Could you help me out with this problem? Could it be the fan control module?
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Wednesday, June 26th, 2019 AT 1:29 PM (Merged)
Tiny
RACEFAN966
  • EXPERT
Ok a couple of questions I need you to answer. First is there two fans? Does the car overheat? Does the fan come on when the engine gets to temp? Do you have a digital multi meter if needed to do some testing? Get back to me and we will see what we can find.
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Wednesday, June 26th, 2019 AT 1:29 PM (Merged)
Tiny
KZCPD
  • MEMBER
HI, my volkswagen only has one electric cooling fan and the engine fan. The cooling fan will work on rare occasions but mostly it will not work. Even when the engine is at temp. Once I noticed on a hot day that the engine did overheat. Yes, I do have a digital multimeter.
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Wednesday, June 26th, 2019 AT 1:29 PM (Merged)
Tiny
RACEFAN966
  • EXPERT
Ok lets run a quick test to see if the fan relay is working ok. Now what I need you to do is with the car running and the A/C on check for power at the fan relay check the brown wire with the black stripe. If this is good then check for power at the a/c pressure switch on the condensor below the right side headlight (passanger side). Let me know what you find here and we will go from there.
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Wednesday, June 26th, 2019 AT 1:29 PM (Merged)
Tiny
KZCPD
  • MEMBER
Where's the relay for the cooling fan? Is there a number on the relay? Is it in the under the dash by the fuses?
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Wednesday, June 26th, 2019 AT 1:29 PM (Merged)
Tiny
RACEFAN966
  • EXPERT
Here are the fuse panel diagrams and guides to help you find the fuse and relay and how to test them.

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

and

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

Cheers
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Wednesday, June 26th, 2019 AT 1:29 PM (Merged)
Tiny
JOSE PEDROZA
  • MEMBER
  • 2003 VOLKSWAGEN PASSAT
  • 1.8L
  • 4 CYL
  • TURBO
  • 2WD
  • AUTOMATIC
  • 141,000 MILES
I need to know the relay number for radiator fan relay. Can someone tell me please?
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Wednesday, June 26th, 2019 AT 1:29 PM (Merged)
Tiny
KEN
  • ADMIN
Hello,

The relay is located under the hood, here are some guides and diagrams (below) to help you get the job done.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

and

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

and

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

Please let us know if you need anything else to get the problem fixed.

Cheers, Ken
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Wednesday, June 26th, 2019 AT 1:29 PM (Merged)

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