Lots of CAN errors

[Chip-Trix]

Hi
A little history and some questions for a Peugeot Expert III experts.
Engine 2.0 HDI 94Kw DW10CD year 2014
I've got one in my workshop. It all starts with the starter sometimes not running when the key is turned, eventually it's pretty often and I read out faults on the car, there are lots of weird errors around the CAN system, but not really any around the starter.
I measured and came to the conclusion, that the BSI module does not send power further and I gets a used from a breaker.
Now the starter is running again, but the engine does not start, and in the car's display it says that the anti-theft device does not open up, I can see on my diagnose tester (Gutmann) that the BSI module controls the anti-theft protection and I can see I have to use some numbers from a keycard to this car, I don’t have this card, is there any way around that, so I can recode keys with the tester.
Questions:
#1. Am I right, that I can recode the keys to any BSI module I put in the car
#2. Someone who has seen this before and has a solution about the CAN faults
#3. My plan was to get the BSI module up and running and see if it fixes the CAN errors

I hope anyone can help, thanks.

MVH Tommy

[GiveMeABreak]

You need to be aware that the BSI and the Engine ECU and the Transponder Chips are all paired, so you can't swap these with other used components or the vehicle will not start as you are seeing.

If you are swapping the BSI for a used one, then you will need to get the BSI 'virginised' by a specialist, before you can pair it to the engine ECU. It will then need programming or checking to ensure all the options and parameters are correct for your vehicle. This is normally done via connection to PSA servers at a dealership and then manually checked afterwards.

Without this, you will never start the vehicle.

As for the confidential code, there is no way around this. You will need to obtain the customer confidential code from Peugeot. You will need to provide them with documentation of vehicle ownership, some proof of ID like a utility bill and the vehicle registration document (or equivalent for your country). They may charge a fee for providing the codes.

It's another reason why most people buy a matched set of BSI, Engine ECU and Fobs if they have to replace one of the main ECUs.

[ozvtr]

I measured and came to the conclusion, that the BSI module does not send power further and I gets a used from a breaker.

Without a circuit diagram I cant be sure, but PSA's engineering SOP is to run the starter solenoid directly off the ignition switch. There is also an interlock if the vehicle has an automatic transmission but I assume this vehicle is a manual? So (typically) the BSI has nothing to do with the starting circuit.
The (new) BSI probably wont "fire up" properly until the engine runs and it will most likely go into ECO mode eventually and shut down (if it hasn't already)! You have 30 minutes of "on" time between the last time that BSI's engine ran and it going into ECO mode! I bet you have past that already.

Replacing the BSI should be the very last thing you should try, to solve a problem. It's a total pain to replace! If that hasn't already become apparent.

I suggest you supply the vehicles VIN so Marc can track down a power generation circuit diagram.
Put the old BSI back in.
Short out the starter to get the engine going (if required) and get the old BSI up and running and the electrical system back to square one.
Establish what is stopping the starter from running (from the circuit diagram).
Establish what is causing the CAN BUS errors (if they are even relevant. The vehicle can live with temporary errors).
IF the fault proves to be in the BSI, it's better to get it repaired than trying to swap it out.