Dr. Mehm Tin Mon describes tihetuka kamma in his book Buddha Abhidhamma Ultimate Science, p. 200:
“If one performs a wholesome deed with the knowledge of kamma and its effect, i.e. kammasakata-nana, then nana-sampayutta maha-kusala cittas arise. The cetana associated with these cittas are accompanied by three good roots, namely, alobha, adosa and amoha. So tihetuka-kusala kamma is acquired.”
Can it be that for tihetuka patisandhi an “early stage” of panna is required, i.e. an understanding that ones actions will have consequences (kamma effect)?