[Solved] C4 grand picasso 1.6HDI - Climate control does not work, does not turn on the ai

C4 grand picasso. The climate is not working for me. The compressor and the radiator fan do not start. The fan works if the engine cuts in above 100 degrees, i.e. it is operational. When I give + 12V to the compressor from the battery, the compressor is spinning, but none of the pipes near the climate is either hot or cold. I replaced the pressure sensor on this aluminum thin tube with a new one. the mentioned factor shows 4bar. All fuses are functional. uninterrupted cable from the compressor to the plug at the fuse box next to the battery. (yellow flat 5-pin plug. violet from pin1 clutch, red from the back of the compressor I do not know what, but it also goes to the same plug and is not interrupted - there is a current transition. Mass is also ok.)
What else can I check.
in lexi shows me:
- cooling pressure information not characterized
- power supply to the sensors of engine speed, air conditioning pressure and camshaft voltage signal too low.
-exhaust pressure difference signal consistent (so Lexia broke off the word)
- engine control module calculator is silent in the CAN network

in the tab: EDC16C34_DV6 / parameters
- air conditioning thermostat input - There is no air conditioning
- air conditioning approval - compressor from (yes, Lexia paused)
- air conditioning cut-off request - cut-off
- air conditioning pressure 3 bar

Is there anything released in BSI? what is it on the back of the compressor connected with a 2-pin plug (is it a rotation sensor)?

What is the actual pressure in the system?
How much factor?

And the next issue, i.e. the lack of temperature difference after turning on the compressor, answer yourself, you are looking for a little from the wrong side.

The mechanic changed the oil, factor and contrast. loaded 570g. he did the pressure on his device and it was ok 4bar. He also did a leak test.
I checked that there is no current from the BSM to the compressor clutch cable. Is it the fault of BSM or BSI does not give the command to BSM to turn on the current to the compressor clutch?