Audio System Symptom Troubleshooting - USB device does not function
USB device does not function
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.
Determine possible failure area (GA-NET circuit, others):

Determine possible failure area (GA-NET circuit, others)
?1.
Turn the vehicle to the ON mode.

?2.
Turn on the audio unit, and press the AUX button to select the USB mode.
NOTE: Do not connect the USB device.

Is No Data displayed in the multi-information display unit?

     
YES
     
     
     
Go to step 2.
     
NO: With HandsFreeLink
     
     
     
Go to step 6.
     
NO: Without HandsFreeLink
     
     
     
Go to step 7.
2.
Determine possible failure area (USB device, others):

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.

Is the USB device working 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:

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 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
     
     
     
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 4.
4.
Determine possible failure area (USB lines, multi-information display unit):

Determine possible failure area (USB lines, multi-information display unit)
?1.
Turn the vehicle to the OFF (LOCK) mode.

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

?3.
Disconnect the following connector.
Multi-information display unit connector B (5P)

?4.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
Multi-information display unit connector B (5P): disconnected

Test point 1:
Multi-information display unit connector B (5P)
Test point 2:
USB port 5P connector
No. 1
No. 4
No. 2
No. 3
No. 3
No. 2
No. 4
No. 1


Is there continuity?

     
YES
     
     
     
     
NO
     
     
     
Go to step 5.
5.
USB main harness check:

USB main harness check
?1.
Disconnect the following connector.
USB adapter 5P connector

?2.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
Multi-information display unit connector B (5P): disconnected
 
USB adapter 5P connector: disconnected

Test point 1:
Multi-information display unit connector B (5P)
Test point 2:
USB adapter 5P connector
No. 1
No. 1
No. 2
No. 2
No. 3
No. 3
No. 4
No. 4


Is there continuity?

     
YES
     
     
     
Replace the USB adapter, then recheck.?
     
NO
     
     
     
Replace the USB main harness, then recheck.?
6.
Determine possible failure area (related unit, others):

Determine possible failure area (related unit, others)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
HandsFreeLink control unit 32P connector

?3.
Turn the vehicle to the ON mode.

?4.
Turn on the audio unit, and press the AUX button to select the USB mode.
NOTE: Do not connect the USB device.

Is No Data displayed in the multi-information display unit?

     
YES
     
     
     
     
NO
     
     
     
Go to step 7.
7.
Shorted wire check (GA BUS+ line, GA BUS? line):

Shorted wire check (GA BUS+ line, GA BUS? line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connectors.
Audio unit connector C (14P)
Multi-information display unit connector A (32P)

?3.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
HandsFreeLink control unit 32P connector: disconnected
 
Audio unit connector C (14P): disconnected
 
Multi-information display unit connector A (32P): disconnected
Test point 1
Audio unit connector C (14P) No. 12
Test point 2
Body ground

Test point 1
Audio unit connector C (14P) No. 11
Test point 2
Body ground

Is there continuity?

     
YES
     
     
     
There is a short to body ground in the wire(s) between the audio unit and the multi-information display unit. Replace the affected shielded harness.?
     
NO
     
     
     
The GA BUS+ and the GA BUS? wires are not shorted to ground. Go to step 8.
8.
Shorted wire check (GA BUS+ line to GA BUS? line):

Shorted wire check (GA BUS+ line to GA BUS? line)
?1.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
HandsFreeLink control unit 32P connector: disconnected
 
Audio unit connector C (14P): disconnected
 
Multi-information display unit connector A (32P): disconnected
Test point 1
Audio unit connector C (14P) No. 12
Test point 2
Audio unit connector C (14P) No. 11

Is there continuity?

     
YES
     
     
     
There is a short in the wire(s) between the audio unit and the multi-information display unit. Replace the affected shielded harness.?
     
NO
     
     
     
The GA BUS+ and the GA BUS? wires are not shorted. Go to step 9.
9.
Shorted wire check (SH GA BUS line to another lines):

Shorted wire check (SH GA BUS line to another lines)
?1.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
HandsFreeLink control unit 32P connector: disconnected
 
Audio unit connector C (14P): disconnected
 
Multi-information display unit connector A (32P): disconnected
Test point 1
Audio unit connector C (14P) No. 4
Test point 2
Audio unit connector C (14P) No. 12


Is there continuity?

     
YES
     
     
     
There is a short in the wires between the audio unit and the multi-information display unit. Replace the affected shielded harness.?
     
NO
     
     
     
The SH GA BUS wire is OK. Go to step 10.
10.
Open wire check (GA BUS+ line, GA BUS? line):

Open wire check (GA BUS+ line, GA BUS? line)
?1.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
HandsFreeLink control unit 32P connector: disconnected
 
Audio unit connector C (14P): disconnected
 
Multi-information display unit connector A (32P): disconnected
Test point 1
Audio unit connector C (14P) No. 12
Test point 2
Multi-information display unit connector A (32P) No. 27


Is there continuity?

     
YES
     
     
     
The GA BUS+ and the GA BUS? wires are OK. Go to step 11.
     
NO
     
     
     
There is an open in the wire(s) between the audio unit and the multi-information display unit. Replace the affected shielded harness.?
11.
Multi-information display unit check (substitution):

Multi-information display unit check (substitution)
?1.
Substitute a known-good multi-information display unit.

?2.
Reconnect all the connectors, and recheck.

Does the symptom go away?

     
YES
     
     
     
     
NO