Audio System Symptom Troubleshooting - There is no sound from the left speaker when the USB device is connected
  1. Measure the voltage between USB adapter unit connector A (14P) terminal No. 11 and body ground.
Is there less than 0.1 V?
YES -
Go to Step 11 .
NO -
Repair open in the wire(s) between the USB adapter unit and the audio unit.■
  1. Turn the ignition switch to LOCK (0).
  1. Disconnect USB adapter unit connector A (14P) and audio unit connector C (14P).