Output information from different blocks of cars.

hello. tell me how to display information from different blocks of the machine? I have a PID for my car, renault laguna 2, I can output information from the engine block, and that’s good, but it does not have all the right sensors. I also need to output the information from the comfort block, but it is always 0.

It will be so! Because the data from the engine goes without opening a diagnostic session from the computer. But even if you receive data from another unit, a surprise will be waiting for you from the engine ECU))))