Electric Condenser fan will not turn on when Air Conditioner is turned on?

JERRY WILLIAMS2

MEMBER
2012 RAM 1500
4.7L
V8
4WD
AUTOMATIC
114,000 MILES

Fuses are all good. I pulled the connectors on the TIPM and saw no corrosion.
If I bypass the high-speed relay which is on the horn bracket, the fan works.

Monday, July 10th, 2023 AT 8:01 AM

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
47,640 POSTS

So, the condenser fan is run by the TIPM which goes out all the time in these trucks, but to be sure we should do a CAN scan, you can get a CAN scanner (Controller Area Network) which will work on most cars from Amazon.

Here is a video to show you how:

https://youtu.be/u-4syLc-ifQ

Here are the fan wiring diagrams so you can see how the system works and I have included how to change out the TIPM which is easy because it-self learns. Check out the images (below). Please let us know what happens.

Images (Click to make bigger)

Electric Condenser fan will not turn on when Air Conditioner is turned on?

1 Reply

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