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
- Supports MP3, WMA, and AAC (encoded with the i-Tunes) 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 in USB devices working in newer vehicles, but not in older vehicles of the same model.

1. Turn the ignition switch to ON (II), and turn on the audio-navigation unit.

2. Connect the customer's USB device to the USB adapter, and check the USB connection indicate into Unit check of System Diagnosis Mode.

Is OK displayed?

YES -

Go to step 3.

NO -

Go to step 8.

3. Check the USB device operation.

Does the USB device work properly?

YES -

The USB device is OK at this time. Check for loose or poor connections at the audio-navigation unit. Also check the USB adapter and the USB port.

NO -

Go to step 4.

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 an USB adapter, and check the USB device operation.

Does the USB device work properly?

YES -

Go to step 6.

NO -

USB device is faulty. Also check the USB adapter and the USB port condition.

6. On the customer's vehicle, remove the audio-navigation unit Audio-Navigation Unit Removal/Installation (With Navigation).

7. Disconnect audio-navigation unit connector E (7P).

8. Check for continuity between audio-navigation unit connector E (7P) terminals No. 6 and No. 7.





Is there continuity?

YES -

Go to step 9.

NO -

Replace the USB adapter.

9. Check for continuity between the terminals of audio-navigation unit connector E (7P) and USB jack 5P connector according to the table.













Is there continuity?

YES -

Substitute a known-good USB adapter, and recheck. If the symptom/indication goes away, replace the original USB adapter. If the symptom/indication is still present, replace the audio-navigation unit Audio-Navigation Unit Removal/Installation (With Navigation).

NO -

There is an open in the wire(s) between the USB adapter unit and the USB adapter. Replace the affected shielded harness.