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206 not communicating with ecu?

Posted By hoohgoo Sunday, January 06, 2019 8:54:17 AM
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hoohgoo
 Posted Sunday, January 06, 2019 8:54:17 AM
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OK have a 206 gti 2005 car was running rough with a anti pollution fault then died briefly came up immobiliser fault done beep test and all is ok now saying eco mode with full battery no power to f15 under bonnet I have changed the the fuse box still same problem found corroded wire from black 16 pin plug c13 red wire on from fuse box fix but still the same issue have engine light on dash and earth at ecu cant see any relay under ecu as have red this can be an issue HELP!
Sunday, January 06, 2019 9:30:21 AM by hoohgoo
Thema
 Posted Sunday, January 06, 2019 9:57:28 AM
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First step (as pretty much always) is you need a code read with a decent tool. I don't trust cheap "Ebay specials" so this may mean you need to get a garage to look at it. From what you've said so far I'm guessing that you're limited in what tooling you have, no shame in that but it does mean you might need to get some help. Maybe someone who works mobile that you've had good reports of?

Peter
hoohgoo
 Posted Sunday, January 06, 2019 10:06:28 AM
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Hi I had someone look at it will not communicate with ecu keep reading on this forum problem with red/white wire break causing this issue car has no red white wire? if I put a live to fuse15 can hear fuel pump kick in still wont start I am limited with knowledge with electrics but car aint worth pumping lots of money into I have a multimeter and stubbornness that's gotta be worth something
Thema
 Posted Sunday, January 06, 2019 10:15:17 AM
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Does the engine management light come on with the ignition? Other than that don't forget this is a Peugeot so wiring is numbered rather than colour coded. Not the best of systems in my view but that's how they do it!
Oh and you're going to need a pin diagram for the ECU to check all power and earth connections. For that your multimeter and stubborness will be quite adequate Smile In fact a headlight bulb on a couple of lengths wire to confirm that the connections are good enough to actually carry a decent current rather than just a voltage will be invaluable as well.
And, last thought, do that power/earth testing with the ECU disconnected to avoid any possible damage!

Peter
Sunday, January 06, 2019 10:20:53 AM by Thema
hoohgoo
 Posted Sunday, January 06, 2019 10:16:24 AM
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yes engine light is on and speedo is saying 90mph?
SB126
 Posted Sunday, January 06, 2019 10:16:29 AM
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I have a multimeter and stubbornness that's gotta be worth something




Can you read the status of the immobiliser inside the BSI with those tools,



hoohgoo
 Posted Sunday, January 06, 2019 10:17:31 AM
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guess not
hoohgoo
 Posted Sunday, January 06, 2019 10:19:11 AM
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you think it could be immobiliser issue?
hoohgoo
 Posted Sunday, January 06, 2019 10:28:53 AM
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Thema (1/6/2019)
Does the engine management light come on with the ignition? Other than that don't forget this is a Peugeot so wiring is numbered rather than colour coded. Not the best of systems in my view but that's how they do it!
Oh and you're going to need a pin diagram for the ECU to check all power and earth connections. For that your multimeter and stubborness will be quite adequate Smile In fact a headlight bulb on a couple of lengths wire to confirm that the connections are good enough to actually carry a decent current rather than just a voltage will be invaluable as well.
And, last thought, do that power/earth testing with the ECU disconnected to avoid any possible damage!

Peter


I dont suppose you could help me with a diagram please?
Thema
 Posted Sunday, January 06, 2019 12:54:03 PM
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Sorry but no. Anything I have is copyrighted and costs me a fair amount of money. Which, I'm afraid, is why I don't give away things I buy for my business.
But try a Haynes manual? They're cheap enough and mostly have quite good wiring diagrams. Or maybe even Google it?

Peter

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