ECU not communicating

Talk about the 406's electrical system, what wires do what, how to add extra functionality, etc.

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Doggy
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Re: ECU not communicating

Post by Doggy »

Does anyone know for certian whether the Snap-On gadget will definetly talk to an HDi - not many things will?

(Though I seem to remember one of FarmerPug's countrymen suggesting a big hammer definetly would talk to it). :supafrisk:
2002 HDi 2.2 Exec Estate, (2008-12) (wonderful)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
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steve_earwig
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Re: ECU not communicating

Post by steve_earwig »

lionyo wrote:...I changed the 10 fuses.
10? There's meant to be 18 :shock: Looks like 4 & 5 supply the connector on the schematics.
Unskilled meddling sin©e 2007

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lionyo
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Re: ECU not communicating

Post by lionyo »

steve_earwig wrote:
lionyo wrote:...I changed the 10 fuses.
10? There's meant to be 18 :shock: Looks like 4 & 5 supply the connector on the schematics.
Sorry for the confusion but i meant the 10a red coloured fuses :oops:

Dogslife you mention that the snap on tool may not communicate with the HDi?
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Re: ECU not communicating

Post by steve_earwig »

Ok, they're both 10a.

No idea, if not had to plug in to my Pug yet (something I need to check I guess) but I do believe they're not very friendly.
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lionyo
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Re: ECU not communicating

Post by lionyo »

steve_earwig wrote:Ok, they're both 10a.

No idea, if not had to plug in to my Pug yet (something I need to check I guess) but I do believe they're not very friendly.
Very frustrated at the momment, makes me want to buy my own computer that I can plug in and use.
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Doggy
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Re: ECU not communicating

Post by Doggy »

That's what I did - got one of these

Not cheap, but I reckon I've saved what it cost me easily by now, not to mention peace of mind.

There's about 5 or 6 forum members with one of these now - if you add your location, someone nearby might help.
2002 HDi 2.2 Exec Estate, (2008-12) (wonderful)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)
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lionyo
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Re: ECU not communicating

Post by lionyo »

dogslife wrote:That's what I did - got one of these

Not cheap, but I reckon I've saved what it cost me easily by now, not to mention peace of mind.

There's about 5 or 6 forum members with one of these now - if you add your location, someone nearby might help.
I am located in Birmingham if some one is kind enough to help me out it would be appreciated.
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lionyo
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Re: ECU not communicating

Post by lionyo »

I just went outside to reconnect the battery and saw that their was a lose connection just below the battery as picture below is the answer for the engine management light, air pollution active being on?

Image

Image

Also my central locking is not working after I disconnected the battery. :(
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Gary406
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Re: ECU not communicating

Post by Gary406 »

check the main earth points from the battery, follow the neg wire,

d8s are usually under the battery try
d9s at the side of the fuse box
2004 (04) Volkswagen Bora 1.9 TDi (100)
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lionyo
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Re: ECU not communicating

Post by lionyo »

Gary406 wrote:check the main earth points from the battery, follow the neg wire,

d8s are usually under the battery try
d9s at the side of the fuse box
Anyone explain what that wire could be?
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Gary406
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Re: ECU not communicating

Post by Gary406 »

follow the neg wire that connects to the battery ...
take the battery back off and follow it and check were it connects to the body ,,,
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lionyo
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Re: ECU not communicating

Post by lionyo »

Gary406 wrote:follow the neg wire that connects to the battery ...
take the battery back off and follow it and check were it connects to the body ,,,
Hi,

Okay I'm not a mechanic but love a bit of a challenge so I will take the battery off and have a poke around to see where it goes.

Wish me luck and if someone knows where it pacifically goes then I would appreciate your input.

Once again thanks for all you contribution and help chaps.
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Re: ECU not communicating

Post by FarmerPug »

a pp2000 will talk to a hdi.
Last edited by FarmerPug on Sat Jan 15, 2011 10:19 am, edited 1 time in total.
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Doggy
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Re: ECU not communicating

Post by Doggy »

You might be able to find it on here

My car seems to have the a connector in the same area - I have a plug & socket wiring from one disappears under the headlight, below the dip beam bulb area. Wiring from the othe half of the connector goes through to the radiator / condenser. I tried disconnecting it to see what doesn't work:
It's not the foglights, doesn't seem to be the horns, wiring's too small to be the radiator fan. :?

Mine had a green/yellow wire plus probably a white one - I couldn't make out numbers on either.
2002 HDi 2.2 Exec Estate, (2008-12) (wonderful)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)
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lionyo
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Re: ECU not communicating

Post by lionyo »

Problem solved

Finally the dreaded engine management and air pollution fault have finally gone, the plug that connects to the denso thing was loose and I put it back on and when I started the car it was still on so I set off to go to the garage and when I travelled down the road it went off.

Well chuffed just need to get the remote fob working :mrgreen:
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