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Old 04-04-2014, 03:42 PM   #1
KillerBMotorsport
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Default Mystery connector! WTFlingin flangin is this thing!

I'm stumped... Not PCV white hose plug thing, not TGV. All cam, and solenoid plugs are in. Pulled the manifold off this car 3 times and for some reason this time it's hiding one on me

This pic of looking at the passenger side fuel rail.

Any assistance highly appreciated!

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Old 04-04-2014, 03:43 PM   #2
bigolrig
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daytime running lights?
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Old 04-04-2014, 03:47 PM   #3
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No, that one is in the fog light area, although disconnected I don't think that's part of the engine harness?
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Old 04-04-2014, 03:50 PM   #4
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ahh okay, on my bugeye the DRL box and plug were on the passenger strut tower
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Old 04-04-2014, 03:50 PM   #5
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Look's like that could be the Flux capacitor plug.
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Old 04-04-2014, 04:06 PM   #6
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^ nope, that one's already plugged in.
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Old 04-04-2014, 04:20 PM   #7
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PCV Diagnosis Plug?
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Old 04-04-2014, 04:24 PM   #8
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Year? Model?
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Old 04-04-2014, 04:27 PM   #9
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Quote:
Originally Posted by daslog View Post
PCV Diagnosis Plug?
That's what I first thought when I saw it, but it's already plugged into the white pcv dangly bit

Quote:
Originally Posted by Nuke209 View Post
Year? Model?
Good question 2012 STi
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Old 04-04-2014, 04:45 PM   #10
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egt sensor
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Old 04-04-2014, 04:55 PM   #11
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that sure looks like it might be to the cam sensor.
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Old 04-04-2014, 04:56 PM   #12
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Thant looks like the PCV connector as it has the plug mount on the bottom that locates it on the inlet pipe. What does the plug look like that is currently plugged into the PCV ?
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Old 04-04-2014, 05:18 PM   #13
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its egt guys..

cam sensor is a 3 wire. pcv connector is in the front of the motor on that year
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Old 04-04-2014, 05:18 PM   #14
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Easy, that's the prefamulated amulite module connector that senses the articulated oscillations of the reciprocating dingle arm...
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Old 04-04-2014, 05:59 PM   #15
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Quote:
Originally Posted by sidewayz View Post
its egt guys..

cam sensor is a 3 wire. pcv connector is in the front of the motor on that year
Sti's don't run EGT sensors.
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Old 04-04-2014, 06:08 PM   #16
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That goes to the pcv air thingy thats on the turbo inlet right in front of where inlet connects to turbo. The blue plug in that pick going to the area in front of turbo is goes to the avcs solenoid on top of valve cover.
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Old 04-04-2014, 06:31 PM   #17
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Quote:
Originally Posted by fastblueufo View Post
That goes to the pcv air thingy thats on the turbo inlet right in front of where inlet connects to turbo. The blue plug in that pick going to the area in front of turbo is goes to the avcs solenoid on top of valve cover.
This. Was mentioned earlier too

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Old 04-04-2014, 06:34 PM   #18
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Quote:
Originally Posted by sidewayz View Post
egt sensor
No EGT on the STi

Quote:
Originally Posted by CTSparky View Post
that sure looks like it might be to the cam sensor.
All (4) cam sensors are plugged in

Quote:
Originally Posted by bikerboy View Post
Thant looks like the PCV connector as it has the plug mount on the bottom that locates it on the inlet pipe. What does the plug look like that is currently plugged into the PCV ?
It's looks nearly exactly like it, but that PCV connector is already plugged in.

Here they are as close as I could get them to each other :/



Quote:
Originally Posted by Motion Machine View Post
Easy, that's the prefamulated amulite module connector that senses the articulated oscillations of the reciprocating dingle arm...
Nope, that's connected.

Quote:
Originally Posted by bikerboy View Post
Sti's don't run EGT sensors.
Correct

Quote:
Originally Posted by fastblueufo View Post
That goes to the pcv air thingy thats on the turbo inlet right in front of where inlet connects to turbo. The blue plug in that pick going to the area in front of turbo is goes to the avcs solenoid on top of valve cover.
I wish I was. see pic above
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Old 04-04-2014, 06:38 PM   #19
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I know no egt... But don't they have a bare plug just chilling? I could have sworn they do
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Old 04-04-2014, 06:43 PM   #20
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I just went out on my 13 and had a look. It looks like either the cam sensor or the pcv open sensor. You said both are accounted for so I am at a loss. It looks like it comes off the loom were the FI connectors do, if so I don't have one of those on my car. IS your O2 sensor plug accounted for?
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Old 04-04-2014, 06:59 PM   #21
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Quote:
Originally Posted by sidewayz View Post
I know no egt... But don't they have a bare plug just chilling? I could have sworn they do
Not that I'm aware of?

Quote:
Originally Posted by ALOKIN View Post
I just went out on my 13 and had a look. It looks like either the cam sensor or the pcv open sensor. You said both are accounted for so I am at a loss. It looks like it comes off the loom were the FI connectors do, if so I don't have one of those on my car. IS your O2 sensor plug accounted for?
The cam sensors are a different plug type so no chance for screwing that up unless you're out to break something

I pulled the PCV sensor off and it goes into both connectors and I can't see any difference in the plugs. I don't believe the PCV sensor was even removed from the harness since it wasn't connected to anything already.

Thanks for the effort guys. Anymore ideas?
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Old 04-04-2014, 07:00 PM   #22
dangerousatom
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What wire colors are they? It sounds like all the possible plugs have been mentioned or accounted for. The only one in the STi diagram that is a weird and gray 2 wire is call the "leak diagnosis connector"
-plug #E80
-page WI-139 in the manual i have.

The wires in your pic dont look long enough to even make it to the PVC plug
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Old 04-04-2014, 07:19 PM   #23
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KB it looks like you got the blue AVCS connector plugged into grey connector in last pic you posted?? You sure that's connected correctly? Shouldn't it be plugged into AVCS solenoid on top of head and maybe this mystery connector plugs into that one?

Or you could do easy thing of cranking the car to see what codes are thrown if all else fails
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Old 04-04-2014, 07:21 PM   #24
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E23 and E17 are the plugs. E17 is the one I can't find it's mate.

E23 is white and black w/magenta stripe

E17 is white and light blue w/red stripe
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Old 04-04-2014, 07:28 PM   #25
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Quote:
Originally Posted by bswilmington View Post
KB it looks like you got the blue AVCS connector plugged into grey connector in last pic you posted?? You sure that's connected correctly? Shouldn't it be plugged into AVCS solenoid on top of head and maybe this mystery connector plugs into that one?

Or you could do easy thing of cranking the car to see what codes are thrown if all else fails
The blue one in post 18, in the background. That goes to the EBCS.

Cam solenoids have blue connectors, cam position sensors are grey.

Thought about cranking it, but I'm still working on the fuel system and this is just eating at me in the mean time!!
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