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Unknow spliced wires on ECU. 

 

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 Post subject: Unknow spliced wires on ECU.
Posted: Sun May 16, 2010 5:43 pm 
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Anyone know what these wires that have been spliced into are coming from the ECU?.They are 2 thick dark blue wires joined onto 1 thin dark blue wire on the ECU.I was thinking maybe for the oxygen sensors but not real sure.ECU code is 4DED from 5.0 EF.
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 Post subject: Re: Unknow spliced wires on ECU.
Posted: Sun May 16, 2010 5:49 pm 
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Can you get a pin number off the plug? Then check this out:

Attachment:
EF-EL Computer Wiring Pin Outs.xls [24.5 KiB]
Downloaded 69 times


The pin numbers are witten in the back of the plug...

Pop that black plastic thingo off and pull the wires aside and with the use of very good eye-sight (or a microscope) they are written down in there somewhere (they are on my ED anyway)

Cheers,
Tim

 

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 Post subject: Re: Unknow spliced wires on ECU.
Posted: Sun May 16, 2010 6:08 pm 
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have you got gas? if so, it would be for that

 

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 Post subject: Re: Unknow spliced wires on ECU.
Posted: Sun May 16, 2010 6:39 pm 
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Nah,no gas...had a look its pin 43,is that xls document for the 5.0?.
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 Post subject: Re: Unknow spliced wires on ECU.
Posted: Sun May 16, 2010 6:41 pm 
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pin 43 is the data output link. why would that be spliced into?

 

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 Post subject: Re: Unknow spliced wires on ECU.
Posted: Sun May 16, 2010 6:42 pm 
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ah no... probably not... wonder much different they are... :S

 

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 Post subject: Re: Unknow spliced wires on ECU.
Posted: Sun May 16, 2010 6:43 pm 
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tony.martin11 wrote:
pin 43 is the data output link. why would that be spliced into?

Not sure,didnt look right to me with the 2 thick wires joined onto the 1 thin wire.
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 Post subject: Re: Unknow spliced wires on ECU.
Posted: Sun May 16, 2010 6:46 pm 
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it should only be one thick wire goes to a thin one, unwrap the tape and have a look as ford do that for the trip computer and everything else which requires the data line

 

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 Post subject: Re: Unknow spliced wires on ECU.
Posted: Tue May 18, 2010 8:53 pm 
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Its still got me stumped why its like that,anymore ideas what it would be for?.
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 Post subject: Re: Unknow spliced wires on ECU.
Posted: Tue May 18, 2010 8:57 pm 
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if i could, ild come down and have a look but its too far to go

 

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 Post subject: Re: Unknow spliced wires on ECU.
Posted: Tue May 18, 2010 9:04 pm 
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Could only suggest seeing if you could follow it...

If it wasn't a dash out job to add that wire, trying popping out the glove box and start following it and see if you can successfully follow it to its destination... If its been a rough add in job, chances are you'll be able to see it through most of its length and it wont be taped up and hidden with the factory looms...

Other than that I don't know how else to help sorry...

Cheers,
Tim

 

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Performance: Complete AUII VCT Wiring & Power Train, Pacey Headers, 2.5" Exhaust, Exedy Clutch, DBA Rotors
Visuals: FG XR Wheel, XR Front, 17's, BA 5 Spd Shifter, BA Ghia Window Switches, NL Cluster
Tunes: 8" Pioneer Sub, JBL Speakers, Clarion Double DIN Headunit

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 Post subject: Re: Unknow spliced wires on ECU.
Posted: Tue May 18, 2010 10:18 pm 
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Timmytimtim and Tony.Martin11,thanks for your help guys.Ill try to follow the wires when i get a chance.
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