PJAlso

I know that there is one temp sensor in CCU. but where are the rest. i like to know expecially where the mixing chamber sensor are located and how difficult it is and how could you test them. because my C4 has a little problem wich is getting worse now when rain gomes as snow and car is freesing passengers.
i have allready opened servo but it is in very good condition and works fine.
but after running heater in different settings like cold and hot or between passengers side servo goes full cold. and if you adjust temp it may or may not work but after while it allwys goes cold.