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

Is there continuity?
YES -
Replace the USB adapter unit. ■
NO -
Repair open in the wire(s) between the USB adapter connector and audio unit connector.■
  1. Turn the ignition switch to LOCK (0).
  1. Disconnect USB adapter unit connector A (14P).
  1. Turn the ignition switch to ON (II).