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Radiator fan fuse blowing

Tiny
PHILBRADLEY
  • MEMBER
  • 2001 AUDI A4
  • 2.0L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 90,000 MILES
Within a few seconds of starting engine radiator fan fuse blows at end of dash, the fuse is 15 amp at position 9. I know most are listed as 5 amp at position 4.
Saturday, October 7th, 2017 AT 9:32 PM

8 Replies

Tiny
STEVE W.
  • MECHANIC
  • 13,414 POSTS
I would say you either have a faulty fan control module or a bad fan motor causing a high current draw. I cannot find a good wiring diagram in the US based data we use but they use the same style control in other vehicles from VW/Audi.
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Monday, October 9th, 2017 AT 5:10 PM
Tiny
PHILBRADLEY
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  • 5 POSTS
Had already put in new fan control module still blowing fuse.
Both fans run when A/C is turned on.
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Monday, October 9th, 2017 AT 11:08 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,320 POSTS
I think this might be the wiring for the system. I managed to get the fuse box location and diagrams for you as well so we can be on the same page on what the fuses do. (Below)

Position #9 seems to be the seat heater system.

Please let us know what happens and upload pictures or videos of the problem.

Cheers, Ken
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Tuesday, October 10th, 2017 AT 1:21 PM
Tiny
PHILBRADLEY
  • MEMBER
  • 5 POSTS
2001 A4 B6 RHD Australia
The fuses are set up differently
Seat heating is#44 30A
Radiator fan is #9 15A
On the fuse cover is a fuse position sticker listing all the fuses 1 to 44 it has a number down the bottom that is 8E0 010 160E
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Tuesday, October 10th, 2017 AT 10:56 PM
Tiny
PHILBRADLEY
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  • 5 POSTS
I uploaded pictures, very hard to get a clear shot.
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Tuesday, October 10th, 2017 AT 11:23 PM
Tiny
KEN L
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I would try to unplug the fan and the module and see if the fuse still blows.

Please let us know what happens.

Cheers, Ken
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Wednesday, October 11th, 2017 AT 10:31 AM
Tiny
PHILBRADLEY
  • MEMBER
  • 5 POSTS
Unplugged fan module still blowing fuse.
Regards Phil.
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Saturday, October 14th, 2017 AT 11:03 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,320 POSTS
Next I would try unplugging the fan motor and then the relays one at a time to see if any of them items have a short, if the fuse still blows then a wire must be touching ground.

Here is a guide to help you do some testing on each wire and find out which on it is so you can either repair or run a new wire.

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

Please let us know what happens.

Cheers, Ken
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Monday, October 16th, 2017 AT 11:06 AM

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