The midfielder has been struggling with an ankle problem and Low admitted he was “poor” in the 4-2 quarter-final victory over Greece.
But the Bayern Munich player was able to play a full part in training and is set to retain his place.
“Schweinsteiger had problems, but it’s not as if these were hindering him,” Low said.
“Against Greece he was poor, but he realises that himself. Against Italy that won’t happen.
“There are only 100% fit players. No player will run out if he is only operating at 80 or 90% capacity.”