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Home >> Honda >> 2012 >> CR-Z L4-1.5L Hybrid >> Repair and Diagnosis >> Accessories and Optional Equipment >> Radio, Stereo, and Compact Disc >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> USB Device Does Not Function (With Navigation) >> Symptom Troubleshooting

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 customer's 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 that USB devices may work in newer vehicles, but not in older 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 AUX button to select USB mode.

NOTE: Do not connect the USB device.

Is USB NO DATA displayed in the navigation display?

YES -

Go to step 4.

NO -

Go to step 14.

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 UNSUPPORTED is displayed in the navigation display, the USB device may not be supported or the wrong type music files are on the device. If USB NO SONG is displayed in the navigation 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 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, the USB port, and the USB adapter for wear.

NO -

Go to step 10.

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

11. On the customer's vehicle, remove the USB device.

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

13. Check for continuity between USB adapter control unit connector B (5P) and the USB port 5P connector according to the table.













Is there continuity?

YES -

Replace the USB adapter control unit USB Adapter Control Unit Replacement, then recheck.

NO -

Replace the USB adapter, then recheck.

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

15. Remove the audio-navigation unit Audio-Navigation Unit Removal/Installation.

NOTE:

- Eject all the audio discs before removing the audio-navigation unit to prevent damaging the CD player's load mechanism.
- Remove the PC card before removing the audio-navigation unit.

16. Disconnect audio-navigation unit connector E (14P) and USB adapter control unit connector A (14P).

17. 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 -

Go to step 18.

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.

18. Reconnect audio-navigation unit connector E (14P) and USB adapter control unit connector A (14P).

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

20. Measure the voltage between USB adapter control unit connector A (14P) terminal No. 6 and body ground.





Is there battery voltage?

YES -

Go to step 23.

NO -

Go to step 21.

21. Disconnect audio-navigation unit connector E (14P) and USB adapter control unit connector A (14P).

22. Check for continuity between USB adapter control unit connector A (14P) terminal No. 6 and audio-navigation unit connector E (14P) terminal No. 6.





Is there continuity?

YES -

Replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.

NO -

Repair an open in the wire between USB adapter control unit connector A (14P) terminal No. 6 and audio-navigation unit connector E (14P) terminal No. 6.

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





Is there less than 0.2 V?

YES -

Go to step 24.

NO -

Repair an open or high resistance in the wire between USB adapter control unit connector A (14P) terminal No. 10 and audio-navigation unit connector E (14P) terminal No. 10.

24. Disconnect audio-navigation unit connector E (14P) and USB adapter control unit connector A (14P).

25. Check for continuity between USB adapter control unit connector A (14P) terminal No. 5 and body ground.





Is there continuity?

YES -

Repair a short to body ground in the wire between USB adapter control unit connector A (14P) terminal No. 5 and audio-navigation unit connector E (14P) connector terminal No. 5.

NO -

Go to step 26.

26. Check for continuity between audio-navigation unit connector E (14P) terminal No. 5 and USB adapter unit connector A (14P) terminal No. 5.





Is there continuity?

YES -

Go to step 27.

NO -

Repair an open in the wire between audio-navigation unit connector E (14P) terminal No. 5 and USB adapter control unit connector A (14P) terminal No. 5.

27. Check for continuity between USB adapter control unit connector A (14P) and audio-navigation unit connector E (14P) according to the table.









Is there continuity?

YES -

Go to step 28.

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.

28. 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 29.

29. Check for continuity between the 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 USB adapter control unit and audio-navigation unit. Replace the affected shielded harness.

NO -

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 is still present, replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.

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