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TDI Conversions Discussions on converting non TDIs into TDIS. More general items can be answered better in other sections. This is ideal for issues that don't have an overlap and are very special to swaping engines.

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Old November 20th, 2005, 11:34   #1
Ghia
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Default Audi A6 2.5TDi (AAT code) 1996 5 Cyl Diagnostic wiring..

Hi,
I've recently fitted an Audi 2.5TDi 1996 AAT code 5 cyl engine to my Crewcab Syncro. It runs ok but the glow plug light it flashing away at me (I know its the ECU telling me something is wrong).
Dispite my best efforts to strip out the loom to just what I needed, I managed to loose the Diagnostic wire from the ECU. The car had OBD1, I think that the Black plug just needs a feed and earth, and that the White plug has a Green/Red wire from the Immobiliser unit but I don't know where the other wire (white, or white and ... ) goes to.
Does anyone have access to a wiring diagram for this year or could anyone tell me what pin number from the ECU the diagnostic wire is correct?
Thanks

MG
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Old November 20th, 2005, 16:28   #2
bhtooefr
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Glow plug light flashing is usually a brake sensor issue, IIRC.

Try turning cruise control on, and if it doesn't work, it's the brake sensor.
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Old November 20th, 2005, 17:26   #3
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Ill check on my Audi for ya mate tomorow....on my audi any brake sensor issues light up the ABS light. Iv seen it happen.
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Old November 20th, 2005, 17:28   #4
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Ill check on my Audi for ya mate tomorow....on my audi any brake sensor issues light up the ABS light. Iv seen it happen.
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Old November 20th, 2005, 17:53   #5
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BHT,

A blinking glow plug light can mean many things. What it is telling you is that the ECU is having problems communicateing with something. For example, the brake light switch, the fule temp sensor, etc.

-J
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Maybe I should pay MYSELF to do bad work on my car!
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Old November 20th, 2005, 18:41   #6
bhtooefr
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Again, I *did* say IIRC.

Thanks for the information, tho - I'll remember that for future reference...
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The really cool ToofTek made "Emperor's Clothes" injector fork risers only worked until someone pointed out that there wasn't any thing there.
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