Wiring Guide: 06 WRX Sedan with Auto AC/HVAC

[RM1SepEx]

grab a manual ecu harness? many have went the Route of Wayne and Erik.... plenty available, pretty much any year

[Bob_n_Cincy]

grab a manual ecu harness? many have went the Route of Wayne and Erik.... plenty available, pretty much any year

It would have to be an 04 FXT or 04 STI manual harness w/avcs & DBW to match every thing I have. I have to much effort into the harness I have to go that route. Thanks, Bob

[nkw8181]

hey I got some connectors from Radio Shack and the pins may slide in depending on which you are looking at. trying to be helpful.

[Bob_n_Cincy]

hey I got some connectors from Radio Shack and the pins may slide in depending on which you are looking at. trying to be helpful.

Hi Nolan,
I'm looking for a pin remover the connector back on post 115.
I suspect the pins you got a radio shack are for Molex or Amp connectors.
I have no clue of the manufacture of the ECU connector is, but I'm pretty sure it is not on of those.
Thanks for your help.
Bob

[Xusia]

Hi Brian, There are open holes that need wires, I can't get any of the unneeded pins out.
The problem hole is the one that tells the ECU that the transmission is a manual. That wire is missing in my automatic harness.
Bob

Is it also missing on the ECU side, or is the connector soldered onto the ECU board?

[Bob_n_Cincy]

Is it also missing on the ECU side, or is the connector soldered onto the ECU board?

All the pins are there on the ECU side.
I could bring a wire out of the side of the ecu box.
Bob

[Xusia]

Given the situation, that's what I would do.

[iWire]

Pulling the pins out of these is pretty much impossible without the correct tool. You need to find a basic pin removal tool that is flat. Then take a bench grinder/dremel etc to it until you get the width/thickness small enough to fit in the lower slot of the plug(about an inch of depth should be enough). If you get it right, you just push it all the way in and it'll unlock and the pin should slide out. I had the actual Subaru tool, it worked, but was flimsy and broke pretty quickly. The hand made one has served me better.

[Bob_n_Cincy]

Pulling the pins out of these is pretty much impossible without the correct tool. You need to find a basic pin removal tool that is flat. Then take a bench grinder/dremel etc to it until you get the width/thickness small enough to fit in the lower slot of the plug(about an inch of depth should be enough). If you get it right, you just push it all the way in and it'll unlock and the pin should slide out. I had the actual Subaru tool, it worked, but was flimsy and broke pretty quickly. The hand made one has served me better.

Thanks IWire
I had almost gave up on finding a solution to this.

I'm looking at Mcmaster part
http://www.mcmaster.com/#4253k14/=rbqw0j

it is 20 x 40 mils
It might be to soft but it worth a try.
Can you measure your tool to see if this is the right size.
Bob

[iWire]

Here is a picture, I don't have calipers to get a real measurement. I think that would be too soft. You just need a tool that is a decent metal you can modify it without it breaking.

[Goldwing]

I think this is R26 (RH taillight):
image.jpg

I noticed it was eerily similar to R24. See PM.

Great write up.

[Goldwing]

I have an '07 donor (sedan, man A/C, wrx, 5spd, no sunroof or heated seats) and can say that your thread was entirely usable with very few differences. So similar it doesn't warrant a separate thread. I guess that's kind of predictable with the 06-07 similarities. Here are a few differences or additions to Mechie3's stellar write up.

B8 (wiper motor) is gray in 07, otherwise the same with the same color wires.

I didn't find the black multi pin connector between the front and bulkhead harnesses in '07 which could be an option difference with more of a base model car in my case.

One of the engine harness connectors is larger in '07, but self-evident.

Additions I may have missed above:
B18 upstream O2
image.jpg

B127 Wastegate Control Solenoid
image.jpg

B3 Mass Airflow Sensor
image.jpg

F127 Air Pump (emissions)
image.jpg

I couldn't figure out what this was on the branch with the engine harnesses and most of the above.
image.jpg
image.jpg
Still working on it.

Thank you again Mechie3 for the huge service to us in taking the time to put this all in the forum. It is a tremendous service to other builders. In short, you rock!

EDIT: 7-15-14 That last connector is B5 for the daytime running light resistor.

[Mechie3]

Thanks for the additions. I didn't have some of those (deleted a long time ago) so it's helpful to have those.

The 07 harness is a bit different in the engine bay. Where the 06 had two connectors the 07 had 1 massive connector.

[AZPete]

Rich, I believe the terminal you asked about connects to a front ABS sensor. The left front ABS sensor has black & white wires; the right sensor has blue & green wires.

Thanks to Mechie3 I have identified all terminals except this white one.
white 8 pole.jpg

And, my donor is 2006 WRX Sedan with MANUAL A/C so I found three terminals that are not in Mechie3's photos of the auto A/C:

B86 blower.jpg
B88 to AC.jpg
B168 Mode Control Panel.jpg

Again, thank you Mechie3. Thank you for all your work posting photos of the terminals !!

[Goldwing]

Pete , that little guy doesn't even look familiar. I'll watch out for it. My mystery connector is larger than the ABS connectors. It's more the size if the alternator plug. I gave the wires a break to get my firewall sorted. Back at the wires soon.

[freds]

Impact Sensor B423 I believe.


Thanks to Mechie3 I have identified all terminals except this white one.
Click image for larger version.

Name: white 8 pole.jpg

ID: 27992

[Mechie3]

I have the impact sensor so I could verify that tonight.

[AZPete]

Detective Freds solved the mystery! The white plug with 8 poles & 6 wires I asked about in Post #134 above is B423. On page 185 of the wiring diagram B423 is listed as 5 pole, which is an error, so I didn't identify it. Now I see that B423 is shown on page 170 as 8 pole with 6 wires, which is correct. I even confirmed the colors of the wires to confirm. It connects to the security system impact sensor so I don't need it but at least the mystery is solved!

[Goldwing]

Looking over the fuel tank harness, I never labeled them after going through the guide, so there's opportunity to identify a few here we have to work with while identifying wires. Many aren't used directly, but can help in identifying wires to wire the fuel level sender (need to grab a wire from the fuel pump plug and the sub level sender since the 818 uses one sender and the wrx uses two added resistance sensors). Anyway, a few that I thought could be helpful:

R58 - Fuel pump Assembly (Black Redwhite Blueblack Blackyellow Blackwhite Blue)
image.jpg

R59 - Sub fuel level sender (Brownwhite Blue)
image.jpg

R47 - Fuel tank pressure sensor (Red Redyellow Greenorange)
image.jpg

R68 - Pressure control solenoid valve (YG)
image.jpg

[C.Plavan]

Anyone know what there two connectors are for near the ALT?


And this one near the turbo (I think its just a ground, but to what?)

[Bob_n_Cincy]

Anyone know what there two connectors are for near the ALT?

Chad
Not sure, but based on the location,
The single looks like power steering pressure switch. Check to see if Red/Yellow wire.
The 2 pin looks like purge control solenoid valve, Check for Red wire and green/yellow wire.
Bob

[Mechie3]

The one in the first picture is indeed the powersteering. I don't quite recognize the other one.

[07FIREBLADE]

It's for the purge solenoid. The 2 wire one by proximity and I was just working on that system today.

[C.Plavan]

Exactly what they are. I should of remembered the purge valve connector.....I uninstalled all that stuff 3 weeks ago- haha.
Thanks guys.

[Mechie3]

I thought the purge solenoid had a different connector. I do remember the boost solenoid having a ground lug bolted to the top of it. I can't find any pictures though and mine isn't stock.

[Mechie3]

I found my spare stock boost solenoid. It has a simlar black wire and single connector on it. Not quite the same.

[Triathletedave]

Looking over the fuel tank harness, I never labeled them after going through the guide, so there's opportunity to identify a few here we have to work with while identifying wires. Many aren't used directly, but can help in identifying wires to wire the fuel level sender (need to grab a wire from the fuel pump plug and the sub level sender since the 818 uses one sender and the wrx uses two added resistance sensors). Anyway, a few that I thought could be helpful:

R58 - Fuel pump Assembly (Black Redwhite Blueblack Blackyellow Blackwhite Blue)
image.jpg

R59 - Sub fuel level sender (Brownwhite Blue)
image.jpg

R47 - Fuel tank pressure sensor (Red Redyellow Greenorange)
image.jpg

R68 - Pressure control solenoid valve (YG)
image.jpg

Can anyone tell me what to do with R59? I don't need two fuel level sensors, but if I delete this then the main fuel level circuit is also broken. Do I simply short these 2 wires together and use the main wires on R58 for the FFR fuel level sensor unit?

Edit: read the previous post again. To clarify, I use 1 wire from R58, and 1 wire from R59, and delete the wire that connects R58 to R59?

[palomino]

I am doing the harness now.
What can't I deleted from the 4 doors?
I know I will have to short the door sensors but what else do I need to keep?
I need to get rid of a lot of wires so I can make sense of this nightmare.

[Mechie3]

I don't remember if you short the doors or just delete the door chimes. I the no they might be normally open. Otherwise delete whatever you want if you don't want power mirrors or power locks.

[iblackwe]

Hey Mechie, Did you ever confirm whether you could delete the DRL (magic black box)? And the various light relays? (I am thinking that anything light related should be kept?) I am assuming that you can delete the blower motor relay?

Thanks for the help!

[Frank818]

Frank 818 would be proud of me though.

Ha!! Just saw this!
Of course I am!! Keep up the great work! I know you are far from home right now, but you'll be back to continue that work.


What were we discussing back then?

[Mechie3]

Hello iblackwe,
I haven't touched the wiring since I started the car way back when. I had enough of it so moved onto the body. Once that is complete I'll finish up the wiring.

Frank...I have no idea. HAHAHA!

[07FIREBLADE]

You can delete the blower motor relay for sure, if you have any questions you should call Brian at iWire, he can answer all of your questions.

[TrickyPete]

I'm starting on the wire harness and just had a question. I'm almost certain but I would feel a lot better with another opinion. The wires wrapped in mustard yellow tape are all part of the airbag system correct? These all have bright yellow connectors.

[Mechie3]

Correct. The yellow is all airbags though be careful. I thought I remember a shared ground or two so just trace it to look for them.

[TrickyPete]

Correct. The yellow is all airbags though be careful. I thought I remember a shared ground or two so just trace it to look for them.

Thanks. I am not confident in my wiring abilities at all. But.... I'm going to give it a shot. I pulled all the tape off everything and used zipties loosely to hold it together in its original shape to make it easier to cut stuff out.

[TouchStone]

Wiring Delete Guide:

https://drive.google.com/file/d/0B3e...it?usp=sharing
Last updated 12-31-2013

If you find errors, fixes, or info to add please let me know

Can you send me the google spread sheet or excel file of this document. I want to integrate pictures directly into this document, and make notes for a 2003 WRX Wagon.

[suttonb3]

IMG_20150508_143232.jpg
Anybody know what this is and what to do with it?

[matteo92065]

IMG_20150508_143232.jpg
Anybody know what this is and what to do with it?

Its the daytime headlight dimmer. You can look it up in the FSM as connector "B5", "Daytime Running Light Resistor".
Funny thing is you can find them on Ebay listed as Fuel injection components.

Edit: What to do with it? I kept it, and installed it. Or you can jumper the wires and your DRLs will not be dimmer during the day.
It will not work unless you keep the "Daytime Running Light Control Module" (B96) that controls the "Daytime Running Light Relay" (B102).

[TouchStone]

That is the DRL (Daytime Running Lights) resistor. It is used to run your lights at low power at all times. If you want it keep it, if not then you can also delete the DRL module.