The graph you showed certainly indicates a fault, normally it would show a parabolic curve as the throttle goes from closed to open then closed again repeated 3 times. It is easier to see what is happening if the ETM is removed and placed so you can see the butterfly move while the test proceeds.
From what you have said, and the codes it looks to me like your problem is on the motor/circuit board side of the ETM as my own one was. It could also just be a bad connection or broken wire.
I'm afraid that is about the limit of my knowledge on this subject.
John
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