Missing or lost Citroen security key-code card consequences?

[Rhothgar]

I got the code for mine from Citroen the other day but am still unable to configure ECU as I cannot find Infodiag on initialisation of the ECU. I think it might be Infodiag 226 but that is as far as I got.

The code isn’t stored in the eeprom for sure. I thought the VIN might be but that doesn’t Ppear to be either.

I downloaded a bin file for DW10ATED RHZ online and compared it to my flash file read.

There is an additional 32768 bytes of blank data at the start of my file.

Almost tempted to delete that and see what happens.

Also spotted that the downloaded file states 1037353495 and 1037353332 in the same file so I think it isn’t necessary trustworthy though I don’t think it would do any harm to upload it and see.

Worst case scenario might be that I have to desoldered the AM29F400BT and reflash manually.

It told me I had a locking problem when I tried to go through CPH initialisation. Keys programmed fine and everything.

Had an interesting experience earlier. Plugged one ECU in and tacho was reading 2000 rpm despite idling and another ECU showed the correct revs.

Managed to damaged two pads on the replacement ECU I bought. Bosch had too way too much glue on the underside of eeprom. So now I either use that as spares or repair it.

There is also a 1037359146 software file. Does anyone know how to identify which is the latest SW version. Is higher number the latest?

eg
1037353332 - 0200?
1037353495 - 0201?
1037359146 - 0202?

Read somewhere that if you write latest SW version you cannot downgrade. No idea if it is fact.

Tempted to write 1037359146 tomorrow and wipe eeprom again to see what effect that has.

Could really do with knowing procedures with initialising whatever needs reinitialising.

I think if is CPH was virginised too then it would be more straight forward.

Shame I cannot get files from Citroen.

And am now wondering how much they would charge for configuration?

Not sure they would be able to do it anyway. They’d probably want to replace ECU and CPH.

[Rhothgar]

It's actually called the engine ECU PIN code. This can be extracted from the BSI or the engine ECU by certain types of scanners or directly from the EEPROM(s). It's typically used to code new keys into the engine ECU but it is also needed to change certain other parameters of the engine ECU.
This code can not be changed in the BSI or engine ECU. At least not easily. If you need to replace the engine ECU you will need the PIN code of the replacement ECU. Many sellers are selling used engine ECU's (in the usual places) without the PIN code, making them virtually useless! The PIN code can be extracted from the ECU but that's an extra cost on top of the cost of the ECU. And the service may cost you more than you paid for the engine ECU!
Then the BSI will need to be "virginized" (blanked) so that the new PIN code can be entered. The PIN code can only be entered into a "new" BSI. But then virginizing the BSI comes with a whole new set of potential problems.

A good automotive lock smith can pick the lock and cut a new key. This is actually the quickest, easiest, and cheapest of all the things here to get done. I use the term "cheap" very loosely, because none of the options here are cheap!
Because they salt the roads in the northern hemisphere, the lock barrel can corrode up. Check the operation of the key lock from time to time, because one day you may need it!

I couldn’t find the code in the ECU but I’ve not stripped the BSI.

I’ve seen some very strange anomalies in the hex code of the flash file this evening. Identical symbols with different hex.

This leads me to believe there is some file corruption.

I bought replacement ECU and cloned it with Kess v3 using original ECU flash file and virginised eeprom yesterday.

I had some success but when I got to this screen Lexia bombed out.

Car starts and runs.

Later in the evening I damaged the replacement ECU.

Managed to successfully strip ECU connector a few days ago. Only taken me 8 years!!!

I did this to double check K and L line data lines.

[wheeler]

I got the code for mine from Citroen the other day but am still unable to configure ECU as I cannot find Infodiag on initialisation of the ECU. I think it might be Infodiag 226 but that is as far as I got.

I would say it will be Infodiag 244 you need, see attached.
226 is about injector coding.

[Paul-R]

Roger, I'm assuming you mean the engine ECU when you just say ECU. There are many ECUs.

[Rhothgar]

Roger, I'm assuming you mean the engine ECU when you just say ECU. There are many ECUs.

I am yes. Sorry. I should have been clearer. I'll start calling it 1320...

[Rhothgar]

I got the code for mine from Citroen the other day but am still unable to configure ECU as I cannot find Infodiag on initialisation of the ECU. I think it might be Infodiag 226 but that is as far as I got.

I would say it will be Infodiag 244 you need, see attached.
226 is about injector coding.

Wheeler!

I COULD KISS YOU!

You absolute LEGEND!

Where did you drag that from?

That is exactly what I have been trying to find. I see it is dated 2005. I wonder what document was valid in 2000 and if there are any differences in the data.

OK. Just an update. Will do separate post soon but car is back up and running again. No idea which map it has on as I've been chopping and changing that much.

Reading through this doc there are still some doubts.

These are my injectors:-

So on Page 3 it states Injector Classes "See the explanations given on page 11." but there are only 8 pages. Would love to see the explanations.

Page 5 has some addition explanation:-

Injectors can be distinguished by means of the letter or figure on the injector, or by a
colour reference, as indicated on the diagram below :

NOTE :
injectors that are non-centred, or centred but not classed, do have a class but this does
not have to be taken into account (configure simply as non-centred, or centred but not
classed).

So it appears mine are non-centred purely going on the part number but there are two columns with the same part number one saying Class 1 or blue or alternatively Class 2 or green. Have you any idea how to identify the colour?

So in Configuration in Lexia, what should I be seeing? Would you happen to know?

The only other thing I am unsure about is Page 7 Datablock. It can be L3 Datablock D1 or L4 Datablock D2. I see no reference to L3 or L4 anywhere.

I have also located the offsets in both flash and eeprom for where the immo code is stored.

[Rhothgar]

Roger, I'm assuming you mean the engine ECU when you just say ECU. There are many ECUs.

Just stripped down a CPH.

I might be reading between the lines here but are you saying I should virginised the BSI also?

If I did that would I be able to enter my own confidential code? I would use the one for the car anyway as that is on Citroen’s database.

It has a 95040 chip in there. Luis-Andre only lists a 95160 in his Immo Tool which is probably for an EDC16C3.

[wheeler]

Do you have RHY or RHZ engine?
Are you not able to read the config of the original ECU/map?

[wheeler]

Just stripped down a CPH.
I might be reading between the lines here but are you saying I should virginised the BSI also?
If I did that would I be able to enter my own confidential code?

In theory yes you could make the PIN whatever you want however you would probably need virgin transponder chips for your key(s) as the will no longer match your car and these chips are write once only.
Just to avoid confusion i take it when you say BSI you are meaning CPH?
You should not need to virginise the CPH but the PIN stored in the CPH must be the same as the one you enter into the injection ECU

It has a 95040 chip in there. Luis-Andre only lists a 95160 in his Immo Tool which is probably for an EDC16C3.

All my tools list both 93C66 & 95040

[Rhothgar]

Yes. CPH I am told is pre-BSI terminology.

Your tool listing - is that for CPH/BSI?

Do you know what chips are required? I have a mate with a Xhorse key programmer and Autel 400XP so I should be good. I think he had chips but it would be helpful to know so I can buy some to replenish his stock. I know it’s an SX9 blade.

Can I actually be a circuit board and reprogramme or would chip need desoldering?

Only have 1 key. It’s about time I had 2 or 3!

Interesting the remote unlock doesn’t actually work. That woukd be nice to get sorted. The keys reprogramme fine when I go through the process.

Maybe I need a new chip on my existing key. I don’t quite understand the key thing.

The immo code is still in the EEPROM because I know the offsets now. I can tell you in PM if you wish.

I would be interested to hear your thoughts on a full virginisation of existing equipment ie Engine ECU EEPROM and Flash File, CPH and Key Chips.

[wheeler]

Yes. CPH I am told is pre-BSI terminology.

Your tool listing - is that for CPH/BSI?

Yes, the Xantia was never fitted with a BSI, My tool is listing for the CPH.

Do you know what chips are required? I have a mate with a Xhorse key programmer and Autel 400XP so I should be good. I think he had chips but it would be helpful to know so I can buy some to replenish his stock. I know it’s an SX9 blade.

Can I actually be a circuit board and reprogramme or would chip need desoldering?

Maybe I need a new chip on my existing key. I don’t quite understand the key thing.

CPH equipped cars can use 2 different types of chip, ID33 or ID48, Simple way to tell is just to read the exisitng key with the Xhorse tool.
Just so you know, on this car the transponder chip & remote are completely separate. Replacing the transponder chip wont affect the remote operation. The Xhorse tool can also check the remote is transmitting a signal from each button too.

[Rhothgar]

Yes. CPH I am told is pre-BSI terminology.

Your tool listing - is that for CPH/BSI?

Yes, the Xantia was never fitted with a BSI, My tool is listing for the CPH.

Do you know what chips are required? I have a mate with a Xhorse key programmer and Autel 400XP so I should be good. I think he had chips but it would be helpful to know so I can buy some to replenish his stock. I know it’s an SX9 blade.

Can I actually be a circuit board and reprogramme or would chip need desoldering?

Maybe I need a new chip on my existing key. I don’t quite understand the key thing.

CPH equipped cars can use 2 different types of chip, ID33 or ID48, Simple way to tell is just to read the exisitng key with the Xhorse tool.
Just so you know, on this car the transponder chip & remote are completely separate. Replacing the transponder chip wont affect the remote operation. The Xhorse tool can also check the remote is transmitting a signal from each button too.

I seem to recall his XHorse telling me what chip on Friday. Cannot recall.

I'll get some genuine cases and try for a couple of circuit boards too.

Got to say I am TOTALLY MADE UP.

My remote central locking is working!

That's NEVER worked in 14 years. I must have done something right.

[Rhothgar]

The initial excitement has already worn off.

Got to bed really early hours and car alarm went off at 7:35am...