Instructions
Insert the "Action Replay" device into your DS game slot. Slide the "Pokemon Diamond" game onto the "Action Replay." Turn on your DS.
Enter the following code lines into the "Action Replay" by using your DS pen to touch the keyboard presented on the screen: 94000130, FCFD0200, 12056C06, 00002000, D2000000 and 00000000.
Finish entering the code by entering the following lines after the previous lines: 94000130, FCFD0100, 12056C06, 00001C20, D2000000 and 00000000. Hit the "OK" button with the DS pen to begin the game.
Begin a new or saved game and press the "R" and "B" buttons on your Nintendo DS to activate the code. Walk through objects and walls while the code is activated.
Press the "L" and "B" buttons to disable the code at any time. Reactivate it by hitting "R" and "B."