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LOL I was trying to figure out why the cruise control didn't work in my 99 when I found plugs like that under the dash and connected them. When I started the car a "disabled" alarm I didn't know was there started going crazy. That was the start of a big headache. I wound up installing a new alarm, which I wanted anyway, but still.
And no cruise. Nice to finally know what the green plugs are for though.
 

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lol, i just did it like 5 hrs ago and just randomly stumbled into this post, ha. i was like 'wth!!?" i assumed it was a cord that came unplugged cuz my roof clock stopped werking, i was ronnng
 

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a green plug story

It's supposed to be disconnected. If you connect it the ECU goes into diagnostic mode.
And what is the purpose/why would one want to run diagnostic mode?

I found these little guys when I was looking for the cause of a CEL P0420 (catalytic converter). I had the cat tested, it was ok. I was looking around and saw these green plugs so I stuck them together. Now my CEL was blinking!? I go to get the code read again with this connected; I pulled eight (8!) different codes, none of which was the old P0420. The codes happened to be just 4 problems all of which had opposite, contradicting codes. I unplugged the green connection before I left the parts store and to my surprise everything was fine after that. (At least I hope so...)
 

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I connected it while I was installing my stereo. I thought I disconnected it somehow. When I turned on the car, I almost had a heart attack! lights blinking, fan turning on and off! Don't do it!
i can image how you felt :biggrin: something like this - :icon_eek:
when i installed my first stereo, i was suspicious of everything being wrong :)

and when i lost my fuel needle behind disasambled dash, i also found those green plugs, thinking that the first two owners must have unplugged them :confused:

btw, its been a month and still no sign of my needle :shake:
 

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Can’t wait to plug those nice green connectors once I get my AP back from shop. Right now my AP is still married to my old car. Stage 1 and than once I transfer some other stuff like my TD06 20g with supportive mods I will go with protune. Nic to know where they are cuz recently I just look on typical location like I used to on my impreza and couldn’t find anything
 

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You know when you get that sick feeling in your stomach !!!! purchased my 2.5 06 XTe in Sept, had a slight sticky problem with shifter. During investigation found two green connectors under dash / steering wheel ?, thought they should be connected and so did exactly that.

On next start up CEL started flashing, disconnect plugs CEL went away.

Took car straight back to garage and thought previous owner had dupped the garage and then me by clever plug pulling move. Now apparently not the case I have discovered.

Car was taken back to local Scooby specialist who reported engine speed sensor failure, replaced it and CEL disappeared. on it's return I checked Green connectors were still connected, so as not to be fooled again ..HAH.. or so I thought !.

Been driving since Sept with plugs connected and no other fualts until today. See post under P0420 uuuurgghhh.

Can somebody please tell me what exactly am I doing with these plugs connected please? and perhaps more importantly whether I should disconnect them ?

Thanks.
 

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If its the same plugs in the first pictures, yes unplug them..
Thanks TC2000. Have disconnected them. Unfortunatley no change in the Flashing Cruise, Steady CEL and Steady Stability Control Off warning that have come on in the last two days.

Have hunted the forum for an idea on why the Stabilty failure comes up with the Cruise and CEL, cant see any referance to it. The latter two would seem to piont to a P0420 code problem, but not the Traction control. Cant see the connection between them.

Any Idea 's or perhaps somebody on here who might ?

Perhaps I should put up another thread or it may be better to wait until I have been able to read and reset the codes.

Am now awaiting newely ordered OBD Scanner and software to try and scan codes being thrown up.

Thanks Again.
 

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I have the 2 larger green plugs pictured in the start of this thread. I also have 2 smaller green plugs. Should they be connected?

I'm not sure where these plugs are located in the car. My engine is in a VW Vanagon. I've just installed the engine in the van and have been having trouble getting it to run right. I wonder if these green plugs might have something to do with it.

I have a scangauge II permanently installed.
 
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