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 12 Volt Battery Test.
- Check the connectors for poor connections or loose terminals.
- Check the USB device compatibility:
- 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 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 in USB devices working in newer vehicles, but not in older vehicles of the same model.
1. Turn the ignition switch to ON (II).
2. Turn on the audio-navigation unit.
3. Press the CD/AUX button to select USB mode.
NOTE: Do not connect the USB device at this time.
Is NO DATA displayed in the navigation display?
YES -
Go to step 4.
NO -
Go to step 15.
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 control unit, and check the USB device operation.
Is the USB device working properly in the known-good vehicle?
YES -
Go to step 6.
NO -
If UNSUPPORTED is displayed in the audio-navigation unit display, the USB device may not be supported or the wrong type music files are on the device. If NO SONG is displayed in the audio-navigation unit display, the USB device may have no music files. 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-navigation unit.
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 -
Go to step 10.
10. Check the navigation system for hard error codes.
Are there any DTCs related to the audio system?
YES -
Do the indicated DTC troubleshooting in the navigation section, and recheck.�
NO -
Go to step 11.
11. Turn the ignition switch to LOCK (0).
12. On the customer's vehicle, remove the USB device.
13. Disconnect USB adapter control unit connector B (5P).
14. Check for continuity between USB adapter control unit connector B (5P) and USB port 5P connector according to the table.
Is there continuity?
YES -
Substitute a known-good USB adapter control unit USB Adapter Control Unit Replacement, and recheck. If the symptom/indication goes away, replace the original USB adapter control unit USB Adapter Control Unit Replacement. If the symptom/indication is still present, go to step 16.
NO -
Replace the USB adapter, then recheck.�
15. Turn the ignition switch to LOCK (0).
16. Measure the voltage between USB adapter unit connector A (14P) terminal No. 1 and body ground.
Is there battery voltage?
YES -
Go to step 19.
NO -
Go to step 17.
17. Disconnect audio-navigation unit connector E (14P) and USB adapter control unit connector A (14P).
18. Check for continuity between USB adapter control unit connector A (14P) terminal No. 2 and audio-navigation unit connector E (14P) terminal No. 2.
Is there continuity?
YES -
Replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.�
NO -
Repair an open in the wire between the USB adapter control unit and the audio-navigation unit.�
19. Disconnect audio-navigation unit connector E (14P) and USB adapter control unit connector A (14P).
20. Check for continuity between USB adapter control unit connector A (14P) terminal No. 11 and audio-navigation unit connector E (14P) terminal No. 11.
Is there continuity?
YES -
Go to step 21.
NO -
Repair an open in the wire between the USB adapter control unit and the audio-navigation unit.�
21. Check for continuity between USB adapter control unit connector A (14P) terminal No. 2 and body ground.
Is there continuity?
YES -
Repair a short to body ground in the wire between the USB adapter control unit and the audio-navigation unit.�
NO -
Go to step 22.
22. Check for continuity between USB adapter control unit connector A (14P) terminal No. 2 and audio-navigation unit connector E (14P) terminal No. 2.
Is there continuity?
YES -
Go to step 23.
NO -
Repair an open in the wire between the USB adapter control unit and the audio-navigation unit.�
23. Check for continuity between body ground and audio-navigation unit connector E (14P) according to the table.
Is there continuity?
YES -
There is a short to body ground in the wire(s) between the audio-navigation unit and the USB adapter control unit. Replace the affected shielded harness.�
NO -
Go to step 24.
24. Check for continuity between the terminals of audio-navigation unit connector E (14P) according to the table.
Is there continuity between any of the terminals?
YES -
There is a short in the wires between the audio-navigation unit and the USB adapter control unit. Replace the affected shielded harness.�
NO -
Go to step 25.
25. Check for continuity between audio-navigation unit connector E (14P) and USB adapter control unit connector A (14P) according to the table.
Is there continuity?
YES -
Substitute a known-good USB adapter control unit USB Adapter Control Unit Replacement, and recheck. If the symptom/indication goes away, replace the original USB adapter control unit USB Adapter Control Unit Replacement. If the symptom/ indication is still present, replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.�
NO -
There is an open in the wire(s) between the audio-navigation unit and the USB adapter control unit. Replace the affected shielded harness.�