Peugeot 307: Horn and Window Washers Not Working Despite BSM Module Replacement

Hello, I need help. I have a 307 peugeot in which the horn and washer of the front and rear windows do not work. I gave the car to the mechanic who replaced the bsi module and the switch on the steering wheel but unfortunately the problem was not solved because the horn and washer still did not work. He recommended replacing the bsm module. The module has been replaced and neither the horn nor the washer operate. I will add that when the horn is switched on, the relay in the engine compartment in the bsm module switches on and when I connect the horn and the washer pump for a short time, they work as they should. If you have any ideas, help where I can still look for a fault.

Check fuses.

fuses checked and are good.

Hello.
Do I need help which cubes 1, 2 or 3 are responsible for controlling the horn and washer pump?

Is it possible to locate the fault via pins on the ankles?

Thanks in advance for your help !

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Warning.

All you need is a meter and 10 minutes of time. First check with Lexia or Diagbox whether the signals are transmitted and received. You didn't describe the car, so the magician's schemes should be different

Have you checked the power supply on the horn cables?

The car is Peugeot 307 year 2003 bsm 9650664180 B2. The signal was checked after switching the horn on, the relay is switched on in bsm, after unhooking the cube next to the horn, there is no power supply there, the same with the washer pump. If someone could tell me on which of these three cubes and on which pins are horn wires and washer pumps. I would like to check if the cable harness or the ground wire are sometimes damaged. Thank you very much in advance.

Replaced BSM for a new or a drug?
Damage may indicate damage to the beam, not electronics.

Bsm was exchanged three times for use also bsm I would exclude. I checked the pin on the bsm module responsible for giving the plus to the cable from the washer pump and on this pin after turning on the washer no voltage appears

Put a plus on the signal cable through the 21W bulb and check if you have a switch to BSM. The same washer. Unplug BSM plugins.

I have a question about the weight on the steering wheel whether a lack of weight can cause a lack of horn and washers and whether the horn and washer have a common weight there?

What mass? You have com and bsi digital signal. Search for bsm or bundle like a relay. I mean, go ahead

I checked the beam and I connected the battery sharply with the battery and it works

You haven't provided specific data, but maybe these patterns will suit you.
They are for the version without a rain sensor but this part may match the version with a sensor.
The green BSM plug (3) controls the washer and horn.
At the beginning, in your place, I would check if the ignition appears on the F13 fuse in the BSM voltage - that is, a 21W light bulb and connect it between the F13 fuse and the mass of the car - should light.
As you can see from the diagram from this fuse goes power to the R4 relay built into the BSM which controls the sound signals. Then the power rushes to the BSM socket on pins 7 and 15.
Then check the same fuse F14 in BSM, which supplies the built-in relays in BSM - R9 and R10 controlling the washer pump. These relays are used to change the voltage polarization at the BSM output where the pump is connected to change the direction of rotation - as you can see at the BSM output in normal state on both pins we have mass and now depending on which sprayer you turn on, the R9 or R10 relay is activated.
You wrote that the sound signal relay is ticking so it is possible that the power supply from the fuse does not reach it, it has a burned working contact or the wire between the wild signals and the BSM is broken as long as they have ground.

I don't know if I've checked everything right, but according to the 5 and 13 pin scheme there should be mass and I should be 5 pins if there is nothing right. Are the wires in my ankle sometimes a little badly connected. ?

Thanks to your help the horn was repaired. Unfortunately, I have a problem with the washer poppump. There is no power on pins 11 and 14 on bsm responsible for controlling the washer pump. I have already replaced the bsm module three times and there was no power. Where can I still look for a fault?