BSI help

[Nathan.White]

hi guys, so had the dreaded water into bsi fault, crazy behaving electrics and non start. Found the rear right connector corroded. Removed bsi opened it up found corroded pcb and components.

Sourced virginised bsi and somebody with lexia to code it. Upon fitting the bsi i have lost the faults headlights not turning off and wipers ect but every time I open a door or operate the light switch the instruments power up with no key in the ignition. They stay lit for say 20 seconds or so. If i turn the key off and remove it they stay on for that time. The bsi clicks off with the key and then you hear a click when the rest turns off.

I initially thought the virgin bsi was still at fault so contacted the person I brought from and he sent me another which he said was a match for the original and he has programmed it ready using the details from original one. But the same fault still there.

I have scanned with a launch diagnostic and I have comms with everything apart from engine ecu. Fault codes in the bsi relate to engine ecu comms.

I have checked earthing points on the wing and on the centre console. I've checked continuity on red and white twisted wires.  I've tried a 2nd bcm. I've checked all fuses in bcm and bsi.

Its a 2004 1.9d multispace 45000 on the clock btw 

Anybody? Before it goes to the scrappy lol

Thanks

[Sol]

Maybe the PCB damage on the BSI has also blown a component in the ECU. As the CANBUS wires (twisted pair) are connected between them, it could be damaged too.

[berlingo_pete]

Just out of interest, why didn't you get the BSI,ECU, BSM and transponder from a scrapped Berlingo? There are quite a lot of diesel ones being broken up, even some on ebay. With only 45k on the clock, seems a shame to scrap yours.

[Nathan.White]

Maybe the PCB damage on the BSI has also blown a component in the ECU. As the CANBUS wires (twisted pair) are connected between them, it could be damaged too.

I thought the same and not ruling it out for the lack of comms but even with ecu unplugged the dash fault still there

[Nathan.White]

Just out of interest, why didn't you get the BSI,ECU, BSM and transponder from a scrapped Berlingo? There are quite a lot of diesel ones being broken up, even some on ebay. With only 45k on the clock, seems a shame to scrap yours.

it is a shame to scrap your right. I went virgin bsi route  to keep the low miles as it would adopt mileage from donor vehicle. Plus I'm not ruling out a wiring fault somewhere

[Sol]

The engine ECU is dedicated to engine & injection functions, the BSI mostly does everything else.

[Nathan.White]

Would anybody have a pinout list for the bsi? Wanna check i have power and earths where I should

[Sol]

Remember the BSI is a microcontroller too, with integral solid state relays. You might get somewhere checking power and earth's but if it's acting screwy it's likely more than wiring.

[Nathan.White]

Remember the BSI is a microcontroller too, with integral solid state relays. You might get somewhere checking power and earth's but if it's acting screwy it's likely more than wiring.

I thought that but have tried 2 replacement bsi and they both behave the same regarding the fault. 

I can get hold of a Peugeot partner same engine but 2 years newer (still same shape) what would I need to swap over to make it run? I already swapped ecu, bsi and put key in the immob ring but hung it lower. It wouldn't start. I did notice the bsi number was different (mine e01 donor e03). The ignition fault did disappear tho but as not the same bsi does this prove anything?

[Sol]

The ECU, BSI and key chip are a set along with the cluster. From what I understand widely, the BSI is the one that checks the key is correct, and authorisation is given to the ECU when it asks. This is the main start authorisation / immo control. HDi Tuning can for instance supply a mapped, or not mapped but unlocked ECU that does not ask for key authorisation and so the car will start even though the ECU is not it's original. It will however be coded with your VIN before you get it, as with the original.

So my point is the ECU asks the BSI if it is allowed to start the engine, not the other way around. So if you get a used setup, it must be a matching set, including the keys.

A used BSI needs to be virginised as you have said, not straightforward as that requires wiring connection to the PCB and the use of carprog or xprog etc to get the pin code and then certain hex file editors to reset the obtained hex data block to virgin once read out of the PIC chip & flash. Then it needs to have the cleaned hex file put back and finally you need Lexia & DiagBox to reconfigure all of the BSI options to the car before it will ever work.

It also needs coded to your key transponder using the extracted pin code before it will allow the ECU to start the engine, did the person who had Lexia do the key coding? Did you get the pin code with the BSI? If not, that's your start problem with a virginised unit now.

I see you know swapping the BSI alone from a scrapper will not work, but if you grab the full set, it should work. That's if the donor set was not faulty in the first place. If you swap a full set from a Peugeot into a Citroen, it will alter its character to Peugeot and Peugeot Planet would be needed instead of DiagBox for future coding for example..

I'd also say the version of BSI should stay the same as the original if you buy a virgin unit, since if the software is different, it might not play well with a non matching ECU, even if virginised and re coded. For example if you buy an unlocked ECU from HDi Tuning, you have to buy a matched model with part & software numbers exactly the same as the one you have.

Swapping the lot would be the straightforward route but of course, if the mileage is higher in the new BSI, the cluster will take the BSI value. Every component will go to the highest mileage value found in any one of them.