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gsr/evo 1-3 ecu pin 24 'rear screen on' what is it???

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#1
GSR

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Can anyone please expand on what pin24 stands for?!

 

Thanks :)



#2
evo-gsr

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From memory, it has do with the rear window demister. I think.
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#3
vr401

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24 REAR SCREEN 'ON' (NOT CONN. TO 22 WAY CONNECTOR) (ELECTRICAL LOAD SENSOR)
Lancer Evolution 7 GSR '01

#4
Evo-00x

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Im guessing its an electrical load sensor for when the headlights and the rear demister is turned on and off. It must sense a voltage drop when those items are switched on and some sort of voltage regulation/ compensation is made by the ECU?  I havent heard of such a thing before for the rear demister, but it could possibly even be "not connected" to anything = nothing exists there at all. That's one of the "question mark" pinouts.


Edited by EVO-00X, 17 July 2014 - 07:35 AM.

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#5
GSR

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You are probably right! I've started looking into it further today and so far have discovered that ecu pin 24 wire splits in two directions. One end goes to one of the dash loom plugs and the other
into some electronic component (resistor maybe? or whatever else it is).

20140717_182319.jpg

 

on the other gsr loom I have, I found similar looking thing but with three wires

20140717_182351.jpg

 

From that component(two wires from orange one) it goes to the male plug that connects to the part of the loom that belongs to the fuse box in engine bay.

20140717_182530.jpg

 

Tomorrow I'll investigate further where they go from those plugs onwards.



#6
jack be nimble

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I think its a diode. Stops the power going backwards
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