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04 wrx neutral safety switch location


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mps446 
Member - Posts: 7
Member spacespace
Joined: November 22, 2002
Location: United States
Posted: November 23, 2004 at 11:48 AM / IP Logged  
hello, I recently got a hold of the factory service manual for the 2004 wrx
i was looking around for some posts about the location of the neutral switch in the 04 wrx but could not find it   so here it is
it is Pin 21 on the ecm connector B136
when in gear it is at ground, in neutral it's 12 volts
04 wrx neutral safety switch location -- posted image.
profuse007 
Gold - Posts: 2,015
Gold spacespace
Joined: October 20, 2002
Location: Texas, United States
Posted: November 23, 2004 at 11:54 AM / IP Logged  
good find
Houston,TX
"The two most common elements in the universe are H+ and stupidity" (Ellison).
JWorm 
Platinum - Posts: 2,208
Platinum spacespace
Joined: December 11, 2002
Location: New Hampshire, United States
Posted: November 23, 2004 at 9:14 PM / IP Logged  
I've posted this info here a few times. I have done my WRX as well as a few customers at my work. The wire is GREEN/ black and is located at the top plug of the ECM. The ECM is below the passenger side floorboard.
On 02-04 models the wire shows ground in gear, and +12v in neutral. In 2005, they switched it. Now its ground in gear, +12v in gear. Still GREEN/ black. I actually just did an 05 WRX Sti last week.
On 02-04 models, hook it up to the hood pin input. On 05's, I tap into the brake input on the remote start. Diode isolated of course.
All this information is readily available on many threads in the security forums at www.nasioc.com

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