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Anyone using ECMLink to control rad fans?

KiNgMaRtY

Well-known member
Joined
Apr 8, 2008
Messages
812
Location
Corona, CA
Since the fan needs power and ground to kick it on, there may be something wrong with your switched 12v. You could just have it be a constant 12v and let the ecu provide the ground from the FPR.
 

thomcasey

Well-known member
Joined
Sep 24, 2014
Messages
907
Location
Indianapolis, IN
When I ground the ground pin, it works fine with the key switch. But, I can look into making that change as a test. Will first verify I have the right wire though
 
Joined
Apr 15, 2014
Messages
6
Location
Michigan
I, too, am trying to get my ECU to control my radiator fan. I've applied Gtpdz's settings but i'm not having any luck. Also, is there a different setting that needs to be configured elsewhere? I am not able to activate the FPS in dsmlink, it is greyed out.

To expand on my setup, i've followed this thread to deal with the radiator fan wiring:
click

Pin 1 and 6 are soldered together (I have no resistor on my aftermarket fan, so the fan is always "high")
Pin 3 and 4 are wired to the + and - connectors on the radiator fan
Pin 2 and 5 are wired to both prongs in the FPS T connector (perhaps this is where i screwed up). Bridging these two kicks the fan on with the key

Oddly, when I shut the car off the radiator fan will turn on for a couple seconds until the solenoid clicks off. That is why I assumed my wiring was correct. Not being able to trigger the FPS in dsmlink isn't helping my troubleshooting.
 
Last edited:

GSTwithPSI

Well-known member
Joined
Jan 1, 2012
Messages
3,445
Location
SoCal
To trigger the relay manually with ECMlink you have to enable the factory settings.

Go to --> ECU config tab --> FPS tab --> check "enable normal (factory) settings"

Then go to the Misc tab and the FPS box should no longer be greyed out. Toggle the button to activate the FPS circuit.

For the wiring, you essentially want fan switch to be grounded through the FPS via the ECU. The hot side of the relay coil goes to 12v+. I use the switched side of the relay coil to control the ground side of the fan, and wire the fan's hot side directly to 12v+.
 
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