There are no codes in that pioneer remote, its strictly a learning remote. I used that exact remote for over 8 years, its the oem remote for the pioneer VSX-D1S.

1. place the pioneer remote face to face with the donor remote, the remote your learning from.
2. pick a mode to learn to on the pioneer, Audio, Video, or AUX.
3. switch from USE to LEARN
4. press a key on the pioneer remote and release.
5. now press a key on the other remote and hold, until the red light goes out.
6. continue with steps 4 & 5 for other keys
7. when done, switch it from LEARN to USE