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Using Idle control for fan
Posted: Mon Mar 18, 2013 8:01 pm
by banzairx7
I'm wondering if I can setup the idle control on my V2 microsquirt to control a fan instead? Looking at the settings in TunerStudio it looks to be coolant temp based all ready. I'm not sure if it energizes the output when the coolant temp is reached or cuts the output on that pin though. It seems like something people would have tackled before but I haven't found anything in searching yet.
Re: Using Idle control for fan
Posted: Tue Mar 19, 2013 5:15 am
by Matt Cramer
You'd be better off using the spare output port settings.
Re: Using Idle control for fan
Posted: Fri Mar 22, 2013 7:10 am
by banzairx7
Looking at the connector pin out I don't see anything labeled as a spare output.
Re: Using Idle control for fan
Posted: Sat Mar 23, 2013 8:43 pm
by dontz125
Take a look at the MegaManual page on
Spare Output Ports. Basically, a 'spare' port isn't one you're using for something else. If you aren't using your FIdle pin for, well - Fast Idle, you can certainly use it for something else. Be sure and turn the 'Idle' function off by selection 'None' for the Idle Control Algorithm.
In TunerStudio - Idle control is the second selection in the "Fuel Setup" tab. Spare Ports is the third selection under that tab.
Re: Using Idle control for fan
Posted: Wed Mar 27, 2013 6:03 pm
by banzairx7
Got it working. Only gotcha was the wiring, it wasn't clear at all how to do it. Since the pin was labeled as an output I tried to drive a relay with it and it didn't work. After way to much searching I found a wiring diagram. Turns it out it grounds the pin. A couple wiring changes later and it's all good.