What tells my CROMA it has a CN+ connected - even without a connected CN+?

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What tells my CROMA it has a CN+ connected - even without a connected CN+?

Marsupilami

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Hi @ all,

I've got a Connect Nav+ in my (2006) CROMA which I'd like to replace by a new 2DIN stereo. It still works but a dramatically decreased FM reception sensitivity (most likely because of the deteriorated antenna plug) and many cumulated wishes for other features led to the decision to replace the CN+.

My biggest concern is: How will I access all other car settings without CN+ ??
The operation manual explicitly says that presence of CN+ strongly limits access to settings via dashboard buttons. OK, I can accept that. But after I completely removed CN+ in order to test the parameter accessibility through the mode button and thus simulate the presence of a new car stereo (haven't bought yet) the big surprise is: Nothing changed!! Means access restrictions persist as if CN+ is still present !?! So I still cannot access the parameter menue circle as described for models without factory CN+.

So my question is: What or where is given a code (electric or whatever) to the car indicating the presence of CN+, since even after its removal the car behaves as if CN+ was still present? Is it a bridge somewhere in the connectors for CN+ ? (If it was a PC I'd say its a jumper or DIL setting issue, but it's not a PC here). So what delivers that encoded information? Is there a hidden factory setting for CN+ presence? If yes , where or how?
:confused:
Now I'v become reluctant swapping to a new stereo, as long as I'm not shure whether I will be able to access full menue via the foreseen dashboard butons (Mode, + and -), without the CN+ connected but with a new car stereo instead.

DOES anyone know an answer to this question and can help me override the virtual CN+ presence in my 2.4 CROMA?

Thanks a lot to anyone who can help me/us! Greetings!
 
After removing the CN+, the car will need the Proxy Alignment procedure carried out to tell the Body Computer that the CN+ is no longer present. The PA procedure can be done at a Fiat dealer, or you can do it yourself with the Multiecuscan software.
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Thanks a lot Davren!
I noticed already in other threads that you're a real pro in answering (y) and I'm glad I also can benefit - as many others - from your knowledge :)
Now I know what to do in case I go for a new car stereo.
Many regards
 
Hi Davren,
I'm pretty happy with my Fiat car dealer I'm going to since many years, but apparently I've reached a point where I'd like to ask you again for a hint:
I've forwarded the content of your previous reply saying that with Proxy Alignment my car (2006 Croma 2.4 JTD) can be told that the CN+ isn't connected anymore so that those functions controlled through the CN+ can now become accessible through the MENU button, offering so far only a limited amount of functions. My car dealer said he never heard about the PA procedure before and according to FIAT Germany the car's computer should be removed and sent to FIAT for reprogramming. I cannot believe this, also because FIAT (through my dealer) says the system isn't tought whether or not a CN+ in on board...
So please, could you say a few more details (and ideally completed by an Internet Link) about this PA procedure, what's needed for it and how - according to your knowledge - FIAT is supposed to respectively how they can do that?
Finally, what is the software alternative you mentioned (Multi...) good for and how is the car tought regarding CN+ ?

Once more, thank you very much in advance &
have a good day!
Regards
 
Your German Fiat Dealer probably does not recognise the English term Proxy Alignment but they should under follows. If not find another dealer.

Proxy Alignment allows the car's body computer to find out / interrogate other car's other systems/modules connected to the cars internal CanBus network. [ame="http://en.wikipedia.org/wiki/CANbus"]http://en.wikipedia.org/wiki/CANbus[/ame]

Very similar to your home PC. The body computer needs a list of devices connected to it. This list needs to be updated every time a device is added, replaced or removed. The Proxy Alignment procedure effectively tells the car's body computer to scan for all attached devices and configure them/itself accordingly. Maybe if you tell your dealer this they will understand better.

MultiECUScan (http://www.multiecuscan.net/)

This software, together with the required and fairly cheap hardware basically provides "near" manufacturer diagnostic support functions. I say "near" because not every Fiat is covered and on some models that are covered then there may be other limitations. Your Croma is supported with a few limitations (e.g. climate control function only supports the reading and resetting of climate control errors but does not support the adjustment/operation of any actuators). See your car support here: http://www.multiecuscan.net/SupportedVehiclesList.aspx

If you want to buy MultiECUScan then the software can be bought directly from the website. For hardware then you are strongly advised to use ONLY the authorized distributers http://www.multiecuscan.net/Distributors.aspx. The distributors can supply just the hardware & cables or they can also supply the software.

Most people normally wan't to add CN+ and not remove it.

If you look here () then you will see a post where someone has done what you want to do.
 
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