Yes guys, you are right. That high frequency PWM signal has started immediately when I chose some output for security relay.
https://youtu.be/q089W8rqvfMNow I have another issue. That throttle is so responsive really hard for slow movements. Now I will need to deal with/simulate operation that Stock S62 have. I have seen that this engine is using IAC valve for first 10 - 15 % of throttle or better to say of PPS. However it might be better to discus within new subject.