A/C Condenser fan not working?

Tiny
HUFFERMAN05
  • MEMBER
  • 2007 DODGE RAM
  • 4.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
My fan is not running and I can’t find the relay.
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Sunday, July 19th, 2020 AT 5:13 PM

8 Replies

Tiny
KASEKENNY1
  • EXPERT
Your vehicle does not have a relay. It has what is called a TIPM or totally integrated power module.

That means that we need to test for power at the fan motor and if we don't have it, we need to go to the TIPM and test for power coming out and if we don't have it then it needs a TIPM. This is not uncommon for these to fail.

Let's check for power and go from there. Thanks
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Sunday, July 19th, 2020 AT 6:51 PM
Tiny
KEN
  • ADMIN
Here is how you can confirm the TIPM being bad with the instructions (below) on how to change out the TIPM which is easy because it self initializes.

https://youtu.be/InIlnsjOVFA

Here are the A/C system wiring diagrams so you can see how the system works. Please let us know what happens.
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Monday, July 20th, 2020 AT 11:09 AM
Tiny
HUFFERMAN05
  • MEMBER
My neighbor is a mechanic and he says the TIPM is getting power and he thinks it might be the temperature control unit that is bad.
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Monday, July 20th, 2020 AT 3:59 PM
Tiny
KASEKENNY1
  • EXPERT
Can we step back and clarify which fan you are saying is not working? I understood the /AC fan as the one under the hood. Do you mean the blower motor is not working? The one that blows the cold A/C air out of the vents?
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Monday, July 20th, 2020 AT 8:10 PM
Tiny
HUFFERMAN05
  • MEMBER
The one under the hood and my compressor is not cycling and I just installed it yesterday. The blower motor is working just fine.
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Monday, July 20th, 2020 AT 9:09 PM
Tiny
KEN
  • ADMIN
Please unplug the cooling fan motor and use this guide to check the ground, then turn the A/C on and wait 2 minutes to check for power at the motor.

These guides will help:

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

and

https://www.2carpros.com/articles/replace-electric-fan-motor

Please run down these guides and report back.
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Tuesday, July 21st, 2020 AT 1:23 PM
Tiny
HUFFERMAN05
  • MEMBER
I changed my temperature control switch in the truck and now my fan is working again, but still no cold air.
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Sunday, July 26th, 2020 AT 12:07 PM
Tiny
KEN
  • ADMIN
This will be a separate problem. Please post your new question here, you must be logged in.

https://www.2carpros.com/questions/new

Cheers, Ken
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Monday, July 27th, 2020 AT 10:21 AM

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