Opel Vivaro 1.9dci 2005: Non-Responsive Accelerator & Unreadable DDT2000 Engine Parameters

Hello everyone.
As in the subject, the air conditioning is also switched on, the DDT2000 engine parameters cannot be read either. I suppose there is no communication between the modules. I will mention that the potentiometer works (visible indications in DDT2000. The program also does not show any errors. Opel Vivaro 1.9dci, 2005
Please help.

Hello
if I'm not mistaken then your Vivaro is a twin Renault hit 1.9 dci if so then
- under the expansion tank there is a fuse box and there are two cubes to be cleaned (when disconnected
battery)
- of course check also relays and fuses
- if you have the option, replace the flow meter
so much for now I'm still struggling with this problem
Good luck
kris

How well I understood you have a similar problem?

Added after 10 [hours] 10 [minutes]:

Pre-mastered, helped pull out the A / C relay, engine running normally, readings normal, no errors. A new problem has arisen. After turning the key and inserting the relay, the air conditioning compressor turns on ...

Hello
so only my pedal doesn't work for some time. This means that after 30 s or a minute (or longer waiting time) it starts to react and the engine works normally, and sometimes everything is fine. All this is very random what would mean a lack of contact on some cube.
and the directions were later stopped working, after a test drive they came back - after some time they stopped working again - this car is some horror.
Observing the live data on the computer, I noticed that after the car computer gives a signal to "open the turbine" begins to respond to the pedal.
and one more thing may be useful to someone if the car with this engine spins and does not start (or starts but it goes like the proverbial tractor) please check egr. It is a double system and the other mushroom likes to unscrew - at least that was in mine.

And as for yours, you can check this relay or replace it with another one, then the switch and cables will remain - a lottery in total ...
Greetings, Kris

The most interesting is why the engine began to respond to the gas pedal after removing the relay. I found information that the relay (+) gets from the ignition switch, and (-) from the ECU. And now either the wire has a short to ground or the controller is damaged. Nothing else comes to my mind.
Regarding your fault, it showed in my live data that the accelerator was working, but the engine did not react, everything normalized after pulling out this unfortunate relay.

Added after 42 [minutes]:

The beam is ok. It turns out that Ecu gives a signal to the relay, right after turning on the ignition. Does anyone from forum know where the ECU gets the signal to turn on the air conditioning relay?