Audio System Symptom Troubleshooting - USB device does not function
  1. Check for continuity between USB adapter unit connector A (14P) and the audio unit connector D (14P) according to the table.
    USB adapter unit connector
    Audio unit connector
    Wire color
    AUDIO L+
    A6
    D6
    BLK
    AUDIO L−
    A14
    D14
    RED
    AUDIO R+
    A5
    D5
    GRN
    AUDIO R−
    A13
    D13
    WHT

Is there continuity?
YES -
Go to Step 31 .
NO -
Repair open in the wire between the USB adapter unit connector A (14P) and audio unit connector D (14P).■