Note: This article is for Mac OS X users. If you are using a Windows PC, please refer to support document 306640.
If you are experiencing a symptom where iPod touch does not appear in the Source list in iTunes after you connect it to your Mac, refer to the troubleshooting suggestions below.
Check the iPod touch Display
When you connect iPod touch to your computer, the iPod touch should display an image or message on the display. If you do not see any image, refer to support document