CAN Bus Collision Simulation: ... 307cc - Eco Mode Problem

Hello forum,
Peugeot 307cc: After 30 minutes with the engine OFF, the radio is forcibly turned off via Eco-mode, likely due to an instruction from the Body Control System (BCS) transmitted via the CAN-bus. THIS IS FRUSTRATING!!! - No one has found a solution...

...or maybe?

Can I suppress a potential BSI command to the radio by 'simulating a collision on the CAN bus' (by permanently setting the bus to 'dominant' via a switch)? I haven't dared to try it yet - what do the experts say?

Of course, I need to ensure that this 'function' is only possible when the key is in the '0' position (i.e., when no key is inserted). When the car is parked, the key is removed (children in the car).
The BSI (German Federal Office for Information Security) probably doesn't have many other tasks anyway - it just monitors the 30-minute timer and implements the Eco mode to annoy me... or does it? It's my choice whether or not I drain my battery by keeping the radio on.

How can I identify (measure with a digital multimeter) the CAN-Low and CAN-High signals? What voltage levels can I expect? What is the best way to simulate a 'dominant' state (using a diode? a resistor?...) without damaging anything? Would the BSI (German Federal Office for Information Security) also accept the bus collision and wait until the bus is free again?

With hope... best regards to everyone! (Great forum here!)
Veco.

With hope... best regards to everyone! (Great forum here!)
Veco

...it's a shame that no one is responding.

Veco...

Were the answers provided here not sufficient for you?
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Were the answers provided here not sufficient for you?


...no, those answers aren't sufficient for me - that's why I was hoping to find the right experts here...

Of course, I also tried asking on the 'Elektroniker' forum, but my question was only answered indirectly, and I couldn't tell if anyone there was actually knowledgeable about CAN bus systems. It's not a question of whether the radio automatically turns off or not... rather, I'm interested in whether this bus collision simulation is technically/practically possible (as I read in the CAN bus description).

'One response has already made me 'think' - the question of whether my BSI (central unit) keeps a log of error messages, and whether it might actually 'shut down' completely after a certain number of entries, requiring service or a repair shop to 'revive' it...' Risk... that's why I haven't tried it yet.

My question: Has anyone here had any experience with this?
I have not given up hope and I remain committed (including, but not limited to, http://www.mikrocontroller.net/forum/read-1-372526.html{MARKER}).

Best regards.
Veco.http://forum.langzeittest.de/read.php?f=123&i=7628&t=7578

Hey everyone,
Although I'm new to this forum, I've already had to familiarize myself with PSA and its bus and control systems for my 206CC.

The Eco mode is designed to protect YOU, so that you can also leave your car parked with the top down (as a convertible) without worrying that any lights, the radio, or other consumers will drain the battery.
Here, among other things, the supply of the switched +12V from the BSI will be blocked.
The basic radio function should also work without a locked CAN bus (provided the BSI still allows synchronization with the VIN stored there, if it is in ECO mode), so you can disconnect the switched 2 with a high-power diode (greater than 20W, cathode towards the radio) or, even better, with a switch that separates the radio.
Diode version: Solder a diode between the switched +12V line and the connector (cut the line for this purpose), and permanently solder +12V to the cathode.
The radio will still function when switched to 11.3V (0.7V voltage drop across the diode), but no one knows how much current it draws through this line, so if you use a smaller diode that cannot handle this power, you would regularly blow it – in the worst case, it would become low-resistance in both directions, which would fry the BSI, and ECO would also be activated because +12V is still being supplied from the permanent power line.
Switch version: simpler, cleaner, protects the BSI.
1. Turn on the switched +12V.
2. Make a tap of the permanent +12V voltage on the wire leading to the radio (using a clip-on cutting contact).
3. Solder a switching switch between the switched +12V, the generated permanent +12V output, and the disconnected wire on the radio connector.
The switch should then feed EITHER switched +12V OR the permanent +12V into the radio.

The advantage of the second option is also that, if the BSI actually deactivates the radio via the bus, you can simply leave the switch in the 'switched +12V' position and hide it behind the center console – this way, the experiment will have no visual or functional consequences.



3. Variant - however, not recommended!!!
Using the DIAG tool, the Peugeot workshop can switch your car from customer mode to service mode. In service mode, the ECO mode function is not available. However, other functions are likely to be affected as well, such as... Airbags, which could then potentially only be activated in a simulated manner, which is useful for testing airbags without triggering them, but it certainly is not worth risking your life just so you can listen to the radio <!-- s --><img src='{SMILIES_PATH}/icon_wink.gif' alt='' title='Wink' /><!-- s -->.
Besides, so many and important systems could function differently that the vehicle's operating license might even expire if the workshop mode is activated – and this will definitely be noticed during the next vehicle inspection, because they now read the car's data via OBD2.

Hi.

Okay, the most sensible solution is definitely a gateway. I've now read through everything, including the micro-documentation. Forum.
I think there's a signal coming through via CAN. It's either a shutdown signal, or there's a regular confirmation signal while it's running, and if that signal stops, everything turns off.

But you have to figure that out. However, it will be difficult to do that with a multimeter .

I think blocking the bus or doing something like that is, sorry, 'nonsense.' Do it properly.
Imagine there's a module you could insert somewhere. How much would you be willing to pay for it?
Best regards, Patrick.

Hey, what year is your 307cc?

Hi.

In the bsi, you can configure how long it takes for the power-saving mode to be activated .
I also set the time higher on my Xantia/C5 mix because the eco mode was nerfed .

Best regards,
Eric

Oops, I just saw that the thread is really old .