406coupe central locking retrofit

[arber333]

When i bought my 406C Pug i didnt much thought about keys and immobilizer. My main task was to convert the car to EV.
https://www.406oc.co.uk/viewtopic.php?f=3&t=24902

I made a spare key in case i would lock original in the car... However after i was already driving it became apparent i cant connect to higher functions on the BSI and BSM which are still in the car. Caveat was that for any communication with PP2000 car needed to have transponder present. But due to my conversion i could use the car without any issues once i would move the key to start position. I didnt complain though .

I have attempted to reprogram my spare keys and cars remote circuit multiple times which allways ended with engineer surrendering to the whims of Peugeot.
Recently i bought 15€ central locking kit from Aliexpress. I have decided to try and retrofit this central locking to my car. My objectives were:
1. have a functioning remote lock/unlock of Pug doors and boot.
2. have an option to raise the windows with door locking.
3. control of car blinkers e.g. find function.

First Eric found a schematic for me

SEDRE - Central Locking - Principle.jpg

(98.15 KiB) Not downloaded yet

It shows 3 wires going from BSI to the back. At first it was a bit confusing since it showed system would use all three wires. Why? There are only two doors and a boot which can be locked via doors anyway. For the 3rd wire it wouldnt need a relay. Well turns out when Pug enters deadlock function of those wire is reversed. Long story short i ended up using only two wires. On the schematic they are marked as 3 and 4 pins of 16 pole black connector on BSI.
Pin 3, orange wire is unlock command
Pin 4, violet wire is lock command
Pin 10, gray wire provides common GND. I dont use its deadlock function.
Then i tried to find blinker command wire on BSI to wire blinkers to a new central locking.
They are located on the same 16pin connector in place of pin 15 and pin 14

406c BSI pinout 16V BK.jpg

(109.94 KiB) Not downloaded yet

Finally i ad to find command to raise windows. I found it on 12pin connector, wire 4. This was trickier since that pin is pulled up inside BSI and you can activate it only by propper signal timing. No more than 0.5s of pulling that pin to GND. Any more and system refuses action.

406c BSI pinout.jpg

(163.35 KiB) Not downloaded yet

[arber333]

For some reason i cant edit my former post?

I wanted to add that when i searched for permanent +12V and GND to connect my central locking box i found possible wires on the green 16pin connector. BSI has permanent power through those wires.
Wire no. 16, gray was +12V and no. 12 yellow/green is GND. I spliced the wires and secured them in.

406c BSI pinout 16V GR.jpg

(98.3 KiB) Not downloaded yet

20220208_131656.jpg

(196.61 KiB) Not downloaded yet

[steve_earwig]

Some of the boards are like that, it seems to be a feature

Nicely done That looks like an excellent workaround for the OEM garba... sorry, I mean system.

Mmm, lego bricks...

[arber333]

Some of the boards are like that, it seems to be a feature

Nicely done That looks like an excellent workaround for the OEM garba... sorry, I mean system.

Mmm, lego bricks...

True, caveat is that now i have central locking in my Pug to which Xi Jinping could have direct access to .

[lukahu]

I have a question.
This pictures that you posted with connectors and numbers, are those two differt in one page because I can see same number of pins and diffrent functions for those connectos?

[steve_earwig]

Er, hello. Which pictures do you mean? I think these are different connectors because the BSI has... lots.

[lukahu]

I mean I can see there are two types od Black sigma connectors and on BSI I have only one Black and one Green sigma connector.

[steve_earwig]

The first one is black, the second one is green? Apologies, I'm not really sure what you're getting at. I can't get into the wiring diagrams any more, is there more than 1 black and 1 green 16 pin connector? Or are you confused (like I was for a moment) because the connector is shown twice in each picture?

[lukahu]

I got it.
One more question: Does this work with Peugeot 406 2001 4 door saloon or is it only for Coupe?

[steve_earwig]

I think the total closure (i.e. shutting the windows with the door lock control) was coupe only (and I don't think there was even the option after RPO 9001), it might be there, I don't know. Same with the locks really, it could be the same, you'll only know if you look I guess.

[lukahu]

Hello,

I found schematic for my peugeot and as it seems that wires from schematic are the same as from the connector, but can you tako a look and confirm that from Bsi are same.

[steve_earwig]

You've lost me I'm afraid, the BSI pinouts are different - 16W BK pin 5: Semi-mux output rear wiper control/ full-mux looks like it's the deadlocks.

However, I realise a switch is a switch, the signalling will be the same. As long as you're looking at wire numbers and not connector positions. I've still no idea about the total closure thing, although I'm pretty sure it was gone on coupes after RPO9001.