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Link G4 Engine Fan Control Setup

R33shaun

By R33shaun,
in Engines & Forced Induction

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R33shaun Community Regular

R33shaun

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Over the last few days ive fitted up twin AU thermal fans to my GTST (pig of a job didnt just bolt up like i was led to believe, lots of cutting and bleeding and swearing!)

What i want to do is drive them off my Link G4 (plug in) the relays and hardware side is all done I just want to know which wires are GP outputs that i can use to drive low at set temps to switch on the fans ( i want to switch one on at 76 odd and the other at 84)

I have the expansion cable plugged into the ECU but it seems that it only has digital inputs and a 5V output?

So my question is, can i use the expansion cable to to drive the fan relays or do i have to tap into the ECU loom and use two spare GP O/Ps and if so what wires are they (colour of the wire and pin No would be awesome)

Id ring the link guys and ask them but there not open atm and i need to get this done tonight so i can drive to work tomorrow!

cheers shaun

Edited by R33shaun
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https://www.sau.com.au/forums/topic/360038-link-g4-engine-fan-control-setup/
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R33shaun Community Regular

R33shaun

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Sorted now cheers to those that helped!

I got a pin for the ecu from jaycar today and ran it off the inj 8 aux line (pin 6), works a treat.

Ive set it up to come on at 87 with a hysterisis of 5deg and it seems to work fine (runs up to 87 fans come on for about a min then cycle off again, sitting at idle it cyles on for a minute on then off for two or three)

Average cruising temp is around 85.

thanks again for the help

shaun

Edited by R33shaun

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