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Peugeot 407 rain sensor pinout

Posted on August 3, 2020 - August 3, 2020 by Kamil (aka. v3l0c1r4pt0r)
Paugeot 407 rain sensor

I had a project in mind featuring rain sensor, present in Peugeot 407 car, among others, probably. However, reality is that it is on my todo list for years now and I don’t think I will do it ever. But, I already bought the sensor in the past and it was lying in my drawer. So why not to disassemble it and figure out the pinout.

Identification

To be precise in what I am talking about, here are some magic values, I know about this thing:

  1. Manufacturer: Bosch
  2. Part number: 1 397 212
  3. Another number: 96 524 903 80
  4. Peugeot part number: 6405 CW

Disassembly

It is pretty easy, considering the fact that car manufacturers does not like tinkerers. All you have to do is to push the two parts against each other and latch should undo. For reference, here is the picture of what is holding two halves together:Peugeot 407 rain sensor latch

Pinout

It was not very hard to find out which pin is for what. Most of the chips on board are made by NXP, so information about them is not top secret. Here it is:

 

Sensor connectorPeugeot407 rain sensor connector
Num. Function
1 12V
2 CANH
3 GND
4 CANL

As you can see the sensor goes directly to 12 volt source (car battery). Signals are, unsurprisingly, CAN low and high. And that’s it. Maybe I will play a bit more with the thing in future, but I don’t promise anything. For sure it does not seem to be hard to hack it a bit, considering its heart is oldschool Motorola chip (now taken over by NXP) – 6800 series. Should be possible to get documentation, hard to say if Bosch secured binary code of the program or not.

Gallery

Last, but not least, some more photos for everyone to enjoy 🙂

Peugeot 407 rain sensor front housing

Peugeot 407 rain sensor back housing

Peugeot 407 rain sensor PCB - front

Peugeot 407 rain sensor PCB - back

Posted in RandomTagged 407, CAN, can-hacking, English, hacking, Peugeot, pinout, Reverse Engineering

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3 Comments

  1. confal says:
    June 10, 2024 at 20:43

    Ce capture se trouve aussi sur citroên picasso C4

    Reply
  2. confal says:
    June 10, 2024 at 20:44

    Ce captEUR se trouve aussi sur citroên picasso C4

    Reply
  3. confal says:
    June 10, 2024 at 20:52

    ” https://www.youtube.com/shorts/SwRztT7XunU “

    Reply

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