Hi lars,
Thank you for your very quick response.
I think I found it, I detail it here if someone is looking for it. Using PWM2 output on pcbv2, which is not used with the cytron, but was high (5V when autosteer ON) while browsing the code I found the solution: just use “Invert Relays” in AOG. Now PWM2 is Low level (0V) when autosteer is ON, just what I need 