Jim needed to wake Aurora up
Had Jim not awakened Aurora, he would have never been able to vent the room and save the ship. Gus would have been awakened by the ship's systems and still died knowing the problem was in engineering, Jim would have found the problem but since he needed to open the outer doors manually there would have been no one to vent the system.
So, in a nutshell Aurora was meant to wake up or everyone on the ship would have died.