Help! What are these wires?

This forum is for technical discussions on anything that will make your car handle better or go faster.

Moderators: IMC, Club Staff

Post Reply
User avatar
spetz
Oldtimer
Posts: 2915
jedwabna poszewka promocja
Joined: Wed Mar 03, 2004 6:00 pm

Help! What are these wires?

Post by spetz »

Hi guys,

I found all these harnesses/wires that I have no idea what they do in my car.
Can anyone tell me what they are?
The wires in question are circled in red.

A.
These are under the dash in the center, sort of behind and under the head unit:
Image

B.
This is a wire with a plug right next to the throttle body:
Image

And these are right next to the window wiper motor:
Image

Thanks
User avatar
Bennoz
National President
Posts: 23668
Joined: Fri Jan 21, 2005 6:00 pm
Location: Sydney
Contact:

Re: Help! What are these wires?

Post by Bennoz »

First one looks like where an auto tranny ECU was removed. Dunno about the other two.
User avatar
Shane001
Oldtimer
Posts: 2730
Joined: Tue Jul 21, 2009 5:00 pm
Location: Sydney
Contact:

Re: Help! What are these wires?

Post by Shane001 »

Best bet would be to look em up in the electical manual.
User avatar
spetz
Oldtimer
Posts: 2915
Joined: Wed Mar 03, 2004 6:00 pm

Re: Help! What are these wires?

Post by spetz »

I think that manual is too big to go through for this, especially considering this isn't an FTO.

Bennoz how sure are you about the auto ECU?
As I thought the auto was still a single ECU (ie motor + gearbox ECU)
User avatar
aza013
NSW Coordinator
Posts: 9087
Joined: Mon Mar 26, 2007 5:00 pm
Location: The Shire
Contact:

Re: Help! What are these wires?

Post by aza013 »

No not one ecu they run an ecu for box and one for engine, it could also be air bag as well.
User avatar
Bennoz
National President
Posts: 23668
Joined: Fri Jan 21, 2005 6:00 pm
Location: Sydney
Contact:

Re: Help! What are these wires?

Post by Bennoz »

Dunno about Lancers, but FTO's have 2 ECUs as Aza says. The engine ECU is up in the drivers footwell, the tranny ECU is there behind the centre console.
User avatar
dstocks
National Vice President
Posts: 9529
Joined: Fri Jun 24, 2005 5:00 pm
Location: Utopia
Contact:

Re: Help! What are these wires?

Post by dstocks »

Thats definitely the Auto Trans ECU. They are the only blue plugs in the loom.
Complete FTO (http://www.completefto.com.au/completefto.asp)
    Image
    If you are trying to contact me and not getting a quick answer, its because im disorganised. Hassle me and ill get back to you
    User avatar
    d_dan
    Grease Monkey
    Posts: 282
    Joined: Tue Apr 22, 2008 5:00 pm
    Location: Ireland

    Re: Help! What are these wires?

    Post by d_dan »

    the ones in your engine bay are standard as far as I know
    User avatar
    vipfto
    Forum Moderator
    Posts: 4154
    Joined: Mon Oct 29, 2007 5:00 pm
    Location: Adelaide

    Re: Help! What are these wires?

    Post by vipfto »

    the last one is atmospheric sensor and can be used to obtain rpm signal, first one ecu loom for auto by the looks and 2nd no idea sorry :?
    FTO GR-TURBO
    172KW ATW @ 11PSI
    User avatar
    spetz
    Oldtimer
    Posts: 2915
    Joined: Wed Mar 03, 2004 6:00 pm

    Re: Help! What are these wires?

    Post by spetz »

    Vipfto, the last pic had 3 plugs though. Are they used for something?

    The first one yes I went through the electrical diagram and it is auto ECU. Do all FTO's have those wires or was the wiring loom from an auto in my car?
    User avatar
    vipfto
    Forum Moderator
    Posts: 4154
    Joined: Mon Oct 29, 2007 5:00 pm
    Location: Adelaide

    Re: Help! What are these wires?

    Post by vipfto »

    sorry brown is atmo sensor
    blue is rpm signal
    not sure for other also

    and I would be sure yours used to be an auto at some stage too, When I converted mine did same and left auto loom in there
    FTO GR-TURBO
    172KW ATW @ 11PSI
    User avatar
    payaya
    Oldtimer
    Posts: 3670
    Joined: Sat Sep 06, 2003 5:00 pm

    Re: Help! What are these wires?

    Post by payaya »

    If the white wire is going to the stepper then obviously the old harness was damaged and is a bad repair job. That other thing with the red hose connected to it looks like an aftermarket fuel pressure regulator?
    User avatar
    Storm
    Veteran Mechanic
    Posts: 841
    Joined: Wed Feb 01, 2006 6:00 pm

    Re: Help! What are these wires?

    Post by Storm »

    vipfto wrote:sorry brown is atmo sensor
    blue is rpm signal
    not sure for other also
    The last wire is the remote wire for the fuel pump so you can pressurise the system after doing any work in the engine bay. Connect it to a live feed and it will run the pump.
    Life is short - Have an affair
    User avatar
    spetz
    Oldtimer
    Posts: 2915
    Joined: Wed Mar 03, 2004 6:00 pm

    Re: Help! What are these wires?

    Post by spetz »

    The car is a Lancer converted to 6A12 MIVEC, so the loom may have been from an auto (car is manual).

    The wire doesn't go to the stepper motor. The stepper motor has a little thing that "holds" the wire. I am sure you've seen this before, it is a weak piece of metal that you bend to hold cables etc.

    The red hose is yes an aftermarket FPR I put in with my RPW extractors.

    So, basically nothing is "missing" from my car? ie, everything is as it should be?
    silverGPX
    9.5"
    Posts: 6793
    Joined: Tue Oct 13, 2009 5:00 pm

    Re: Help! What are these wires?

    Post by silverGPX »

    TCL
    User avatar
    payaya
    Oldtimer
    Posts: 3670
    Joined: Sat Sep 06, 2003 5:00 pm

    Re: Help! What are these wires?

    Post by payaya »

    spetz wrote:The car is a Lancer converted to 6A12 MIVEC, so the loom may have been from an auto (car is manual).

    The wire doesn't go to the stepper motor. The stepper motor has a little thing that "holds" the wire. I am sure you've seen this before, it is a weak piece of metal that you bend to hold cables etc.

    The red hose is yes an aftermarket FPR I put in with my RPW extractors.

    So, basically nothing is "missing" from my car? ie, everything is as it should be?
    Where's the white wire going to then? Looks like it's connected to the stepper harness.
    User avatar
    payaya
    Oldtimer
    Posts: 3670
    Joined: Sat Sep 06, 2003 5:00 pm

    Re: Help! What are these wires?

    Post by payaya »

    Bennoz wrote:Dunno about Lancers, but FTO's have 2 ECUs as Aza says. The engine ECU is up in the drivers footwell, the tranny ECU is there behind the centre console.
    Passenger footwell??
    silverGPX
    9.5"
    Posts: 6793
    Joined: Tue Oct 13, 2009 5:00 pm

    Re: Help! What are these wires?

    Post by silverGPX »

    TCL
    Post Reply