The whole technical unit can include many things. For the left hand here it means making sure the fingers for each group of notes are calmly in place or hovering ready to go down when needed, the left arm is in the best position for each string and if there is a shift making sure that it is fluid and happens in time. For the bow it means simply being in the right part of the bow at the right time!
The grace notes can affect coordination. Firstly practice the relevant notes without the grace notes to make sure the rhythm is correct and secondly when you add the grace notes, use a A pause between groups of notes. This is inserted to monitor the group of notes just played and/or program the next group to make sure left-hand fingers are prepared and ready to go.