Speedwagon Posted May 14, 2013 Share Posted May 14, 2013 I was under the impression it would come on with the main fan, when the A/C was turned on. But this appears to not be the case. So what conditions enable the sub-fan? Link to comment Share on other sites More sharing options...
nipper Posted May 15, 2013 Share Posted May 15, 2013 That's when it is supposed to come on. Link to comment Share on other sites More sharing options...
presslab Posted May 15, 2013 Share Posted May 15, 2013 You didn't say what kind of car. Turbo and non-turbo have different fan systems. Link to comment Share on other sites More sharing options...
Speedwagon Posted May 15, 2013 Author Share Posted May 15, 2013 You didn't say what kind of car. Turbo and non-turbo have different fan systems. Right... 98 Legacy GT. Link to comment Share on other sites More sharing options...
presslab Posted May 15, 2013 Share Posted May 15, 2013 Okay, sounds like it's not working right. Here's the diagnostic procedure: http://www.seccs.org/tech/1998%20Legacy/Service%20Manual/DIAGNOSTICS%20SECTION/ENGINE%20COOLING%20SYSTEM/MSA5TCD98L21310.pdf Link to comment Share on other sites More sharing options...
porcupine73 Posted May 15, 2013 Share Posted May 15, 2013 Some of them also have a 'map' as to which fans are on and when, and it has a few variables. Example: 1 Link to comment Share on other sites More sharing options...
Speedwagon Posted May 30, 2013 Author Share Posted May 30, 2013 I... am an idiot. I could have sworn I checked the 20A fuse under the hood for the subfan, but apparently I did not. Looked at it today, and it was blown. Replaced, and the subfan comes on again. Link to comment Share on other sites More sharing options...
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