lexia can't connect to cph texton

[pierrot]

My Lexia couldn't connect to cph-texton citroen xantia 2. All of other ECUs connect perrfectly. I tryed with another Lexia interface and PC, cph-texton was able to connect, after that it able to connet with mine lexia to, but after few days it stops again. What can be the problem? I tryed with other PC and software version without sucsess.

[Zmann]

If you'd like to trace back in the CPH box, pin 11 on yellow plug is responsible for K-line comm