How does human will fit with Pratītyasamutpāda? On Tevijjavacchagotta Sutta the Buddha said that in the last ninety-one aeons, no fatalist who denies the power of volitional acts, has ever gone to heaven, except one, who happened to follow the doctrine of kamma and of morally effective deeds. How does this power of volitional act or volitional act happen with in the frame work of Pratītyasamutpāda?

My intension is not to discuss about non-self rather about the volitional act done by the self-doer as explained in Attakārī Sutta. Also not so much about the change or motion, the being stepping forward or backward, but the volition or intention that brought about the change.

Pratītyasamutpāda states that everything except Nirvana are conditioned, and from ignorance (Avijjā) comes mental formations (Saṅkhāra) which includes volition. 

So if every mental formation is conditioned by ignorance including human volition (choice), how come a being by choice, which is volition, which has ignorance at its base root out ignorance?

On the other hand, if volition (choice) is not conditioned by ignorance, then the beings choice is out side Pratītyasamutpāda which has ignorance at its starting point? 

Similarly, if the answer is yes and no, this still implies that volition (choice) can be out side Pratītyasamutpāda?

Many thanks.
You have asked a very good question, I remembered if correctly it's in the Sutra of Perfect Enlightenment Maitreya Bodhisattva asked similar question: 以幻修幻 - how can if phenomenal world is illusory construct and the "I" is also illusory that a practitioner realize the Ultimate Truth? I remember the Buddha answered 以幻修真 - using the illusory to rid the illusion, as if using a wedge to get out another wedge stuck in the hole. Therefore, I think to give some help of your inquiry is to think of: your volition is to get over ignorance by choosing actions of not ignorant... You find that the action that is not ignorant is still an ignorant action... so on and so forth. Until you finally know the action that is not ignorant, that you are enlightened. It could be a long practice, or it could be a sudden realization. A bit like someone doing a difficult math equation, volition discerns the answers are not correct, over and over, that the working out incorrect answers are the footings to finally have the correct answer. Volition the ability to discern doesn't get hindered by ignorance, although ignorance prevented it from knowing the correct answer immediately. The Sutra has very good analogy full of wisdom far better than I presented here, I just recalled to make an answer in convenience. I hope I didn't misunderstand your question, and I'm not quite familiar with the terms and the Suttas mentioned in the OP.