Phizinza Posted March 22, 2007 Share Posted March 22, 2007 Ok, so I know this is for a EJ22 into Brat conversion, but I thought some of you may be able to help me out on this one... I am trying to get the ECU to run my 'new' radiator fans. But when I wire it up to the Brats wiring loom the fans go on slow and then a little while later something electronic inside the car starts to burn. I thought this may be the relay and I was wondering if the Legacy relay is a different type (maybe to support speed changalbe?) So, what do you think is burning? Is the relay different? Where is the relay on the Liberty/Legacy's? And what should be the output of the Radiator control wire when the engine is hot? Quote Link to comment Share on other sites More sharing options...
Legacy777 Posted March 22, 2007 Share Posted March 22, 2007 Do you have the wiring diagram for the brat's radiator fan setup? Quote Link to comment Share on other sites More sharing options...
Phizinza Posted March 23, 2007 Author Share Posted March 23, 2007 Do you have the wiring diagram for the brat's radiator fan setup? Stupid me.. I didn't even think to look at the circuts, I just assumed they would be similar. Well heres what I found in the diagrams. The Brat's fan is operated through the igntion switch, through the fusebox (along with the radio,) through the fan, then the thermoswitch connects it to negative on the battery. The Liberty/Legacy has a relay which the ECU turns on and the fan is wired to that relay. So hopefuly I haven't fried the rad fan controller on the ECU. Does anyone know what sort of current the fan control wire from the ECU is suppose to put out? And more importantly, what polarity is it (negative for positive?) Thanks for reminding me not to be an idiot Legacy777, lol Quote Link to comment Share on other sites More sharing options...
the_postie Posted March 23, 2007 Share Posted March 23, 2007 the ecu grounds the relay to turn the fans on. Quote Link to comment Share on other sites More sharing options...
nipper Posted March 23, 2007 Share Posted March 23, 2007 You may have to run a new wire or two. If you smelled something burning, odds are, it was hot enough to smoke the insulation of the wire, and make the wire brittle. nipper Quote Link to comment Share on other sites More sharing options...
Phizinza Posted March 24, 2007 Author Share Posted March 24, 2007 Thanks, I should of guessed it was a grounding switch like most of the other things on the ECU. I hope it was just the wire burning up... And not my ECU lol. I was thinking of running a new wire anyhow. I really am just over complecating this. Quote Link to comment Share on other sites More sharing options...
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