Audio System Symptom Troubleshooting - USB device does not function (without navigation)
  1. Check for continuity between USB adapter unit connector A (14P) and audio unit connector C (14P) according to the table.
    USB adapter unit connector
    Audio unit connector
    Wire color
    +B
    A1
    C1
    WHT
    SYS ON
    A2
    C2
    LT BLU
    GND
    A11
    C11
    BLK

Is there continuity?
YES -
Go to Step 26 .
NO -
Repair open in the wire(s) between the USB adapter unit and the audio unit.■
  1. Reconnect audio unit connector C (14P).
  1. Turn the ignition switch to ON (II).