Symptom Troubleshooting

Audio System Symptom Troubleshooting - USB input sound is low or cannot be heard

USB input sound is low or cannot be heard (with navigation)

NOTE:

- Check the vehicle battery condition first 12 Volt Battery Test.
- Check the connectors for poor connections or loose terminals.
- 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 ON (II).

2. Check to see if there is a specific speaker that has no sound.

Do all speakers make a sound?

YES -

Go to step 3.

NO -

Go to no sound is heard from the speaker(s) No Sound Is Heard From The Speaker(s) (Display Is Normal) (With Navigation).

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

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

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

6. Turn on the audio-navigation unit.

7. Press the CD/AUX button to select USB mode.

8. Check if the USB device can be operated with the audio-navigation unit (Folders of Files UP/DOWN, etc.).

Can you operate the USB device, and can you hear the sound?

YES -

Go to step 9.

NO -

If the sound is normal, the USB device is OK at this time. If the USB device cannot be operated, go to USB device does not function Symptom Troubleshooting.

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

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

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

YES -

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

NO -

USB device is faulty. Also check the USB cable and USB adapter connector condition.