Audio System Symptom Troubleshooting - USB device does not function(Without Navigation, With Display Audio)

NOTE:

Check the vehicle 12 volt battery condition first .
Check the USB's specifications:
- Mass-storage class ready digital audio player with USB 2.0 port
- More than 256 MB storage space
- 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 that USB devices may work in newer vehicles, but not in older vehicles of the same model.
If Unsupported Version appears on the display, the vehicle is OK, there is a software problem with the USB device.
Check the connectors for poor connections or loose terminals.

1. DTC check:
- 1. Turn the vehicle to the ON mode.

- 2. Check for hard error codes - Refer to: How to Troubleshoot the Audio System Audio System Self-Diagnostic Function .

Are there any audio DTCs indicated?

YES

Go to indicated DTC's troubleshooting.

NO

Go to step 2.
2. Determine possible failure area (USB device, others):
- 1. Turn the vehicle to the OFF (LOCK) mode.

- 2. 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.

Does the USB device work properly in the known-good vehicle?

YES

Go to step 3.

NO

See the Owner's Manual for details about the USB device requirements and approved file types.
3. Problem verification 1:
- 1. On the customer's vehicle, connect the customer's USB device to the USB port A located in the center console.

- 2. Turn the vehicle to the ON mode.

- 3. Check the USB device operation in the customer's vehicle.

Does the USB device work properly in the customer's vehicle?

YES

Go to step 5.

NO

The failure is duplicated, go to step 4.
4. Determine possible failure area (USB1 line, others):
- 1. Turn the vehicle to the OFF (LOCK) mode.

- 2. Disconnect the customer's USB device from the USB port A.

- 3. Connect the customer's USB device to the USB port B located in the center console.

- 4. Turn the vehicle to the ON mode.

- 5. Check the USB device operation in the customer's vehicle.

Does the USB device work properly in the customer's vehicle?

YES

Go to step 6.

NO

Replace the audio unit - Refer to: Audio Unit Removal and Installation(With Display Audio)Audio Unit Removal and Installation(With Normal Audio) .
5. Problem verification 2:
- 1. Turn the vehicle to the OFF (LOCK) mode.

- 2. Disconnect the customer's USB device from the USB port A.

- 3. Connect the customer's USB device to the USB port B located in the center console.

- 4. Turn the vehicle to the ON mode.

- 5. Check the USB device operation in the customer's vehicle.

Does the USB device work properly in the customer's vehicle?

YES

Intermittent failure, the system is OK at this time. Inspect the connectors of the USB device, USB port, and USB adapter for wear.

NO

The failure is duplicated, go to step 7.

6. Open wire check (USB1 lines):

- 1. Turn the vehicle to the OFF (LOCK) mode.

- 2. Disconnect the following connector.

Audio unit connector F (5P)

- 3. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Audio unit connector F (5P): disconnected

Test point 1:Audio unit connector F (5P) - Refer to: Audio Unit Connector for Inputs and Outputs(With Display Audio)Audio Unit Connector for Inputs and Outputs(With Normal Audio)	Test point 2:USB port A 5P connector
No. 1	No. 4
No. 2	No. 1
No. 3	No. 3
No. 4	No. 2

Courtesy of HONDA, U.S.A., INC.

Is there continuity?

YES

Replace the audio unit - Refer to: Audio Unit Removal and Installation(With Display Audio)Audio Unit Removal and Installation(With Normal Audio) .

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

7. Open wire check (USB2 lines):