| [ Total Views: 1136 | Total Replies: 10 | Thread Id: 98020 ] |
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 pete wood
A.k.a.: figure itout
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| posted on July 25th, 2012 at 07:16 PM |
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quick question about ECU wiring fan switch
Finally wiring the fans to the ECU.
Diagram says
battery volts = off
0 volts = on
I assume this means I wire a 12v feed to the relay and let the ECU ground it to earth?
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1303Steve
A.k.a.: Steve Carter
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| posted on July 25th, 2012 at 07:52 PM |
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That's correct, the ECU grounds the relay
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pete wood
A.k.a.: figure itout
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| posted on July 25th, 2012 at 07:54 PM |
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ta, thanx.
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mackaymanx
A.k.a.: Brent
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| posted on July 25th, 2012 at 07:57 PM |
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Yes that's how I wired my van.
Quote of the week
"Do I wish to send them to you again, nope, no interest can't be bothered really, to much hassle for little or no return."
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1303Steve
A.k.a.: Steve Carter
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| posted on July 25th, 2012 at 08:06 PM |
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Hi Pete
So are keeping it?
Wiring the fan to the ECU will bring it on when the motor gets hot, I have switch in the radiator as well wired to battery, the few times that I've
run my bug the ECU switches the fan on 1st every time
Steve
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pete wood
A.k.a.: figure itout
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| posted on July 26th, 2012 at 07:06 PM |
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Dunno if I'm keeping it. Had a few enquiries but nothing solid. It's still for sale but I'm sick of *&#%$& davies craig mechanical switch
that screws up every few years.
Another question.
I have twin fans and twin fan control hookups on the ecu. Should I run both off the one hookup or let the ECU control both fans independently?
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pete wood
A.k.a.: figure itout
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| posted on July 27th, 2012 at 08:45 AM |
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k, got it wired last night and.... now only fan comes on. :/
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1303Steve
A.k.a.: Steve Carter
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| posted on July 27th, 2012 at 09:20 AM |
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Hi Pete
I'm not sure if understand your issue, is only one fan coming on? The two fans on the Subaru come on at different temps, one at lower temps the other
as the motor gets hotter if the 1st one doesn't cool the it down enough.
Steve
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BlueV2
A.k.a.: Mark
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| posted on July 27th, 2012 at 02:10 PM |
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Pete, you might find that the second fan is only for when the air conditioner is turned on. That is how my ECU works anyway and I am fairly sure your
motor is very similar to mine.
Sharpbuilt V2, EJ25, Subaru 5 Speed, Falcon rear discs, Heater & A/C, Rack Steering
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pete wood
A.k.a.: figure itout
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| posted on July 27th, 2012 at 07:41 PM |
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Yeah, I think that's the go. I'll trace the wiring and run both fans off the one feed.
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lou0060
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| posted on August 5th, 2012 at 06:14 PM |
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hi Pete, I did the same on mine. both fans come on together now. The smaller fan I think is meant to come on when the air-con is switched on from
what I have read, which is always on in a buggy...
1971 karmann ghia Cabrio - Cruising 
1963 beetle Sunroof - gathering dust 
1968 race beetle - twin turbo Subaru - stress relief 
1960 beetle - old school low & slow  |
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