Engine cooling and auxiliary fans not turning on

Tiny
STEVEI0742
  • MEMBER
  • 2007 AUDI A6
  • 3.0L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 168,000 MILES
Hi. My engine cooling and auxiliary fans are not coming on when the car is running, I have access to VCDS and I can do the fan test which does make them run so they are mechanically/electrically okay. I have checked every fuse I can find to do with the system and all are okay. I have not checked relays. VCDS shows no fault codes for HVAC at all! I am lost now for what to do next, please help!

Steve.
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Saturday, August 25th, 2018 AT 10:40 AM

7 Replies

Tiny
KEN
  • ADMIN
I would start by checking the relays (1.2). Here is a guide to show you how and the cooling fan wiring diagrams to help you see how the system works with the relay locations below:

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

Check out the diagrams (below). Please run this test and get back to us.

Cheers, Ken
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Sunday, August 26th, 2018 AT 12:23 PM
Tiny
STEVEI0742
  • MEMBER
Hi Ken, thanks for the information. Is it possible to email me full size copies of those wiring diagrams? I can only open these to a small size on screen and difficult to view them.

Thanks Steve.
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Monday, August 27th, 2018 AT 12:09 AM
Tiny
KEN
  • ADMIN
On there way!
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Monday, August 27th, 2018 AT 10:39 AM
Tiny
STEVEI0742
  • MEMBER
Hi Ken.

Thanks for the diagrams, I was trying to view them on a laptop but when I clicked on them I only got a small copy about 4x4 in the centre of the screen, I'll have a look at the one's you have just sent shortly. Thanks again.

Steve.
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Monday, August 27th, 2018 AT 10:48 AM
Tiny
KEN
  • ADMIN
Can I ask which browser and operating system?
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Monday, August 27th, 2018 AT 10:49 AM
Tiny
STEVEI0742
  • MEMBER
Windows 10 and latest version of Firefox.

Steve.
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Monday, August 27th, 2018 AT 10:52 AM
Tiny
KEN
  • ADMIN
Thanks Steve, I will tell our Admin to have it fixed. Please let us know what happens with the car.
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Tuesday, August 28th, 2018 AT 9:35 AM

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