Dead space 2 wiki guide.
Opening locked doors in dead space.
You simply need a straight stiff.
But get ready to blast your first real enemy remember target the limbs you may also.
Use the leg of the pick to find and push each pin up and out of the tumbler.
Once all pins have been moved the lock should open.
If it is locked at first you eventually return and it will be unlocked.
Node locked doors are doors that require a power node to open.
You return to this area later in the game.
Same goes for any other door in the game.
With your weapon in hand use a melee attack on the generator to the right of the locked door to open the way.
Each time you visit that level you will need to expend a power node to open that.
The doors will be unlocked.
Insert the pick above the wrench.
The non locking side of the door should have a small hole likely on the face of the knob.