jesse says it is in the wiring, it is wired correctly, so maybe the harness was made wrong?

 

White1 says it is the ECM, pin 42 is staying grounded. I may just send it back to jesse, and have him do some "other" stuff also!

 

ok, if they weren't coming on before PIN 42 was connected, then there can't be anything wrong - both fans will come on low when the PCM pin recives -12V. If they are both coming on low with the ignition, then they are recieving a -12V from the PCM at the point of ignition on.
With that fact established then there is only two possibilities:
1.) the Pin is in the wrong hole (double and triple check that it's in slot 42 of the Blue connector)
2.) the PCM is sending -12V to Pin 42 either because of a defect or an error in tuning

I guess I should have asked this a long time ago, but was the engine cold when you noticed the fans running "all the time"?

 

They do not come on with the ignition, but they do come on as soon as you start the truck. Jesse said to try pin 33 on the other connector, it does the same thing.

 

yes, cold engine. I may try the 33 pin, but how do the pins come out of the ecm once they "clicked" in?

 

Thats the exact same thing mine did with my wait4me tune. I got your PM, let me know what happens. Ill help you out however I can.



For anyone else with a similar problem, pull the pin out of slot 42, and check that point to ground with an ohm meter. My money is on the slot being grounded all the time.

 

Nick: How do you get -12v...is there a dc-to-dc conversion inside the pcm?

Red: Good luck with your problem.

 

With my wait4me tune and white1's harness my fans run on low with the truck running. Dosnt bother me though ill just fix it when I buy tuning software in the near future.

 

He meant a ground

 

just checked out the 33 pin and it already has a wire in it!?