Engine/Power - EJ25T (STI and 2006+ WRX) Discussions about the USDM 2006+ WRX and WRX STi 2.5 liter turbo flat-four.

Need help once again! AVCS +/- Wires?!?!?!?

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Old Jun 14, 2005 | 09:42 PM
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Question Need help once again! AVCS +/- Wires?!?!?!?

Hey I-clubbers, i'm in need of some motor help again! I can not figure out which wire on the AVCS solonoid is + and which one is -. i need the info to both sides, driver and passenger, solonoid. thanks in advance for all help!
Old Jun 14, 2005 | 10:14 PM
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More info needed. What AVCS heads? What ECU? What main harness did you start with?
Old Jun 14, 2005 | 10:32 PM
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Originally Posted by Imprezer
More info needed. What AVCS heads? What ECU? What main harness did you start with?

it is the USDM Sti EJ25 motor. i need to know which wire is + and which wire is - on both the driver and passenger side of the AVCS solonoid. I'm running the Hydra ECU and i've already solder some wires to the harness for the AVCS solonoid and the wires have been run to the ecu area already. i just need to know which wire is which. thanks again for any/all help! especially from THE IMPREZER!! it's nice to get support from you alex! thanks!
Old Jun 15, 2005 | 06:45 PM
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I have the wiring diagram in pdf...but can't attach due to size.
I can send it to you.
Also, as both wires terminate at the ecu, I can't tell you which is + and/or -.
Old Jun 15, 2005 | 08:35 PM
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do they have a color code for the + and -? i spoke with phil from element tuning and he said that it didnt matter which is + and which is - since it's a solonoid. i just wanna double check before splicing. please help me out guys! thanks!
Old Jun 15, 2005 | 09:28 PM
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OK....here's what I got.
The numbers are on both the connector and the solenoid.

LH Solenoid:
Terminal 1 = LB = Blue Black ==> RW = Red White, pin 19 of the 34 pin terminal (B134) on the ecu.
Terminal 2 = YB = Yellow Black ==> OrL = Orange Blue, pin 29 of the 34 pin terminal (B134) on the ecu.

RH Solenoid:
Terminal 1 = GB = Green Black ==> G = Green, pin 18 of the 34 pin terminal (B134) on the ecu.
Terminal 2 = WB = White Black ==> GrG = Gray Green, pin 28 of the 34 pin terminal (B134) on the ecu.

Last edited by FW Motorsports; Jun 15, 2005 at 09:44 PM.
Old Jun 15, 2005 | 10:25 PM
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o wow! thanks a million! ignore my email! i can just look at the ecu diagram now and find out which is which! dude, thanks again Oaf, i owe you! i hope you liked the intake manifold!

thanks for anyone else who tried to help!
Old Jun 15, 2005 | 10:46 PM
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You're welcome.
Old Jun 15, 2005 | 11:01 PM
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TO ALL I-CLUBBERS: Keep this info! It is very useful if you're trying to do your own USDM STI motor swap into a WRX.
Old Jun 16, 2005 | 11:25 PM
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ha, ignore my reply to your other post then
Old Jun 17, 2005 | 02:47 AM
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hey krinkov, thanks for having the intention of wanting to check for me. iono if you'd be interested, but i have a buddy who has 4 yokohama grand prix m3/z tires for cheap. they still have about 85% left on them and it's 255/40/17. dont know if you'd be interested, but thought i'd ask.
Old Jun 20, 2005 | 06:09 PM
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duno jack i want your screen name so i never get another technical question again about what a knock sounds like hehe

if i ever see an avcs question ill PM it to you hehe
Old Jun 21, 2005 | 12:27 AM
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um, i'm not sure what a knock sounds like either since i dont think i've heard it. but yeah, if ppl have questions about this swap, tell them this: DONT DO IT UNLESS YOU KNOW EVERYTHING AND IS PREPARED TO HAVE **** GO WRONG!!!

i thought my car would be running by now, but now for some weird reason, it would only want to fire up for a little bit (split second) and then die out and not start anymore.... man, headache after headache...
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