Symptom Troubleshooting

Symptom Troubleshooting: USB device does not function

USB device does not function (with navigation)

NOTE:

- Check the vehicle battery condition first.

- 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

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

2. Push the AUX button to select USB mode.

Is USB NO DATA displayed?
YES - Go to step 3.

NO - Go to step 7.


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

4. Connect the customer's USB device to a known-good vehicle that is equipped with the USB adapter, and check the USB device operation.

Is the USB device working properly?
YES - Go to step 5.

NO - USB device is faulty. Also check the USB cable and USB adapter connector condition.


5. Disconnect USB adapter unit connector B (5P).

6. Check for continuity between terminals of USB adapter connector B (5P) and the USB adapter 5P connector according to the table.





Is there continuity?
YES - Replace the USB adapter unit. USB Adapter Unit Replacement

NO - Open in the wire(s) between the USB adapter unit and the USB adapter. Replace the affected shielded harness.






7. Check the XM operation on the navigation display.

Are the system working properly on the navigation screen?
YES - Go to step 4.

NO - Go to XM radio display is blank and no station information is displayed troubleshooting.


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

9. Check that the navigation unit connectors and the USB adapter unit connectors properly connected.

Are the connectors properly connected?
YES - Go to step 10.

NO - Connect the connectors and recheck.


10. Measure the voltage between body ground and USB adapter unit connector A (14P) terminal No. 1.

Is there battery voltage?
YES - Go to step 11.

NO - Repair open in the wire between the navigation unit and the USB adapter unit.






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

12. Measure the voltage between body ground and USB adapter unit connector A (14P) terminal No. 11.

Is there less than 0.1 V?
YES - Go to step 13.

NO - Repair open or high resistance in the wire between the navigation unit and the USB adapter unit.






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

14. Measure the voltage between body ground and USB adapter unit connector A (14P) terminal No. 2.

Is there 10 V or more present?
YES - Go to step 16.

NO - Go to step 15.






15. Measure the voltage between body ground and navigation unit connector E (14P) terminal No. 2.

Is there 10 V or more present?
YES - Repair open or short in the wire(s) between the navigation unit and the USB adapter unit.

NO - Substitute a known-good navigation unit Service and Repair and recheck. If 10 V or more are present, replace the original navigation unit. Service and Repair






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

17. Measure the voltage between body ground and navigation unit connector E (14P) terminal No. 2.

Is there 10 V or more present?
YES - Substitute a known-good audio unit and recheck. If 10 V or more are present, replace the original navigation unit. Service and Repair

NO - Go to step 18.






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

19. Disconnect navigation unit connector E (14P) and USB adapter unit connector A (14P).

20. Check for continuity between terminals of navigation unit connector E (14P) and USB adapter unit connector A (14P) according to the table.





Is there continuity?
YES - Substitute a known-good USB adapter unit USB Adapter Unit Replacement, then reconnect all of the connectors and recheck. If the symptom/indication goes away, replace the original USB adapter unit. If the symptom/indication is still present, replace the navigation unit. Service and Repair

NO - Open in the wire(s) between the navigation unit and the USB adapter unit. Replace the affected shielded harness.