Guys
I've been searching for a few weeks now about how to properly setup the 411 PCM for dual fans @ single speed, with little luck.
After playing around with the tune for several days I'm resorting to this thread.
I have my wiring harness pinned for both fan outputs as follows:
Fan 1 - Pin 41 (blue connector)
Fan 2 - Pin 33 (red connector)
These two leads supply the ground for the coil on my individual relays.
Currently, the #1 fan works as commanded. I've changed the ECT's around and the fan reacts as it should. However, I cannot get fan #2 to come on. I have swapped the fans to opposing relays and the other fan will work, so I know this is not a mechanical issue, nor a mix-up on fan #2's wiring.
I have the following setup in HPT
Obviously the ECT setting for Fan #2 is not optimal, I just had it set low for testing purposes (not having to wait till engine gets hot to trigger it on)
If anyone can shed some light on something I might be missing thats preventing Fan #2 from being triggered I'd greatly appreciate it.