P0481 code Fan 2 control circuit?

Most of the time these cars have a fan control module that goes out, also I would but 12 volts to the fan and make sure it works well, if the cooling fan is going out it will pull too many amps which will cause the module to go out as well. Here is the wiring diagrams so you can see how the system works. Here is the location of the module as well. Check out the images (below). Let us know how it goes

i just now saw this, thanks

You are welcome, please let us know what happens.

thing is, it quit doing it . . .

I car that fixes it its self YAY!!!! If it starts doing it again please get back to me so I can keep helping you :)

okay, the radiator cooling fan was not working, i bought a new one in the box from a salvage yard, but the connector was four wire and the fan in my car was different and wouldn't plug in. i don't have continuity to ground on either one of the radiator cooling fan relay coils, terminal 85. is the ground from the TIPM a straight battery ground?

Hmm, I am not sure, this car has a 4 wire radiator fan motor and there is no cooling fan relays? Please check out thew wiring diagrams above. So there is some confusion here.

the cooling fan definitely has a three pin connector, i bought a new in the box fan from a salvage yard and that one had four pins so i took it back and got a new three pin cooling fan.
it ran great last week when the outside temperatures were reasonable, needle on the gauge stayed at middle, (½ way mark). then day before yesterday it pegged out after a little bit when i turned the AC on.
this morning it was low on coolant so i added some,bled the air out below the thermostat and drove it around the block some and it hasn't gone past the midrange on the gauge. i'm fixin to go about twenty miles and see if it holds or fails once the outside temperature gets to where it's going today.

but yes, the cooling fan connector is three pin and there are two cooling fan relays.

is the ground on the cooling fan relays, (pin 85), a chassis/battery ground?

Hmm, I see in the wiring diagrams this is not so, can we double check the year? Also check you upload an image, did you check out the wiring diagram I provided? This is what the manual provides for the car so I am confused.

3A4FY48B17T545549 is the VIN, it's tagged and insured as an 07, but the sticker on the door says 11/06

i had the radiator cooling fan connector apart and in my hands yesterday, but today it's under the air filter housing and battery, but i'll be happy to dig out if you'd like. i took a picture of the radiator cooling fan relays. a hot from each go to the outsides of the connector and the inside is a ground from somewhere . . .
i did run it up the road 30 some miles or so at 85° outside temperature and it seems alright, i'm going to give it another run when it gets to 100°

Yep, there is your problem, someone has tampered with the wiring and added relays. I bet the TIPM went out and someone tried to rig it, this is why you are getting the code and why the radiator fans do not work correctly.

i did that in the course of trouble shooting the issue. i bought this car from Enterprise when it aged out at 30,000 miles or so, circa 2008, and have been driving / maintaining it ever since. the relays shown are original, just not where they're supposed to be.
is the ground on the cooling fan relays, (pin 85), a chassis/battery ground?
is there a wiring diagram available?
it won't let me upload the logic diagram that i have, but it basically shows the pinout of the two relays with input to the coil on #86 and ground on #85. is that chassis ground?

Yes the wiring diagrams for the fans is above. Please go over this post again, no relays.

the relays have always been there, i changed one that had stopped working and then changed the radiator cooling fan as it was shorted. i also changed the 50A fuse, (#15), in the TIPM to a 40A.
the relays have always been part of the circuit, i've owned this car since 2008
the wiring diagrams above don't relate to this car

thank you for your time and attention in this matter

Hmm AllData must be incorrect the, not the first time lol. Where did you find these wiring diagrams? This guide will help you test the relays.

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

I would do a simple continuity test for the wiring, I would not worry about the ohms test right now. As you can see the TIPM closes the relay coil to make it work, power must be on the other side of the relay coil.

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

Please go over these guides and get back to me.