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

Is there continuity?
YES -
Repair short in the wire between body ground and the USB adapter unit connector terminal No. 5, No. 6, No. 13 and No. 14.■
NO -
Go to Step 32 .