Audio System Symptom Troubleshooting - USB device does not function
USB device does not function
NOTE:
Check the vehicle 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.
Make sure the USB device is connected directly to the USB port. Do not use a USB hub.
If Unsupported Ver 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.
Determine possible failure area (USB device, others):

Determine possible failure area (USB device, others)
?1.
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 (same year/trim)?

     
YES
     
     
     
Go to step 2.
     
NO
     
     
     
See the Owner's Manual for details about the USB device requirements and approved file types.?
2.
Problem verification:

Problem verification
?1.
On the customer's vehicle, connect the customer's USB device to the USB port located in the center console.

?2.
Turn the ignition switch to ON (II), or press the engine start/stop button to select 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
     
     
     
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 3.
3.
Determine possible failure area (USB lines, audio unit):

Determine possible failure area (USB lines, audio unit)
?1.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

?2.
On the customer's vehicle, disconnect the customer's USB device from the USB port.

?3.
Disconnect the following connector.

?4.
Check for continuity between test points 1 and 2.
Test condition
IG LOCK (0) or OFF mode
 
Audio unit connector K (5P): disconnected

Test circuit
Test point 1:
Audio unit connector K (5P)
Test point 2:
USB port 5P connector
USB GND
No. 1
No. 4
USB VBUS
No. 2
No. 1
USB DATA+
No. 3
No. 3
USB DATA
No. 4
No. 2



Is there continuity?

     
YES
     
     
     
     
NO
     
     
     
Go to step 4.
4.
USB adapter check:

USB adapter check
?1.
Disconnect the following connector.

?2.
Check for continuity between test points 1 and 2.
Test condition
IG LOCK (0) or OFF mode
 
Audio unit connector K (5P): disconnected
 
USB adapter 5P connector: disconnected

Test circuit
Test point 1:
Audio unit connector K (5P)
Test point 2:
USB adapter 5P connector
USB GND
No. 1
No. 4
USB VBUS
No. 2
No. 1
USB DATA+
No. 3
No. 3
USB DATA
No. 4
No. 2



Is there continuity?

     
YES
     
     
     
Replace the USB port, then recheck.?
     
NO
     
     
     
Replace the USB adapter, then recheck.?