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USB Connector, Overview

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2009 Volkswagen Rabbit, 2009 Volkswagen GTI, 2008 Volkswagen Rabbit, 2008 Volkswagen R32, and 2008 Volkswagen GTI. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying USB Connector Assignments
GWWN91-10791Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
  1. Data in, (here output)
  2. Data clock
  3. Voltage supply, terminal 31
  4. Data Out, (here input)
  5. Not used
  6. Voltage supply, terminal 30
  7. Right LF audio signal, plus
  8. Control wire, plus, switched from radio
  9. LF audio signal, minus
  10. Left LF audio signal, plus
  11. Not used
  12. Not used