Symptom Troubleshooting

Audio System Symptom Troubleshooting - USB device does not function

USB device does not function (with navigation)

NOTE:

- Check the vehicle battery condition first Battery Test.
- Check the connectors for poor connections or loose terminals.
- Check the USB device requirement:
- Mass-storage class ready digital audio player with USB 2.0 port
- More than 256 MB of RAM
- Support MP3, WMA, and AAC (encoded with the iTunes) files, DRM files are not supported

- Not all players and player functions work with the USB adapter. Please see the Owner's Manual for more information. Always test the customers USB device in a known-good vehicle of the same year and trim (if possible). Technologies change and are updated frequently which may result that USB devices may work in newer vehicles, but not in order vehicles of the same model.
- If UNSUPPORTED appears on the display, the vehicle is OK, there is a software problem with the USB device.

1. Turn the ignition switch to ON (II).

2. Turn on the audio system.

3. Press the USB/AUX button to select USB mode.

NOTE: Do not connect the USB device.

Is USB NO DATA displayed in the audio display?

YES -

Go to step 4.

NO -

Check the navigation system hard error code.

4. Turn the ignition switch to LOCK (0).

5. Connect the customer's USB device to a known-good vehicle (same year/trim) that is equipped with a USB adapter, and check the USB device operation.

Is the USB device working properly in the known-good vehicle?

YES -

Go to step 6.

NO -

If the display panel displays UNSUPPORTED or MEDIA ERROR, the USB device may not be unsupported or is defective. If the display panel displays USB NO MUSIC, the USB device may have no music files or wrong type music files are on the device. See the Owner's Manual for details on USB device requirements and approved file types.

6. On the customer's vehicle, connect the customer's USB device to the USB port.

7. Turn the ignition switch to ON (II).

8. Turn on the audio system.

9. Check the USB device operation in the customer's vehicle.

Does the USB device work properly in the customer's vehicle?

YES -

The system is OK at this time. Inspect the connectors of the USB device, USB port and USB adapter for wear.

NO -

Substitute a known-good audio-navigation unit (including the HDD) Audio-Navigation Unit Removal/Installation, and recheck. If the symptom/indication goes away, replace the original audio-navigation unit Audio-Navigation Unit Removal/Installation.