Data Check and Log Check

0002, aka Data Check and Log Check refers to a disc and a NAND title installed from disc used during Wii Factory Setup. The WAD from which this title is installed, known as "DataChk.wad", does not always have its contents deleted after factory setup, and as such multiple versions of 0002 have been recovered from Wiis.

This program reads the SD card for an "all.ini" file, then performs various tests based on instructions in the file. However, it is not the main RVLAging test program, as this is 123J or possibly another disc known as 100J/0000dead.