Audio System Symptom Troubleshooting - 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.
- Before doing this troubleshooting, check the USB Error Cords .
- Check the connectors for poor connections or loose terminals.
- 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 port, and check the USB device operation.
Does the USB device working properly in the known-good vehicle?
YES
Go to step 2.
NO
See the Owner's Manual for details about the USB device requirements and approved file types.
- Problem verification
-1. On the customer's vehicle, connect the customer's USB device to the USB port(s).
NOTE: With USB charger unit: Except the USB port C and the USB port D.
-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: All USB ports do not work
Replace the audio-navigation unit .
NO: All USB ports do not work
NO: USB port A does not work
The failure is duplicated, go to step 3.
NO: USB port B does not work
The failure is duplicated, go to step 4.
- Open wire check (USB lines)
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Disconnect the following connectors.
With navigation: Audio-navigation unit connector F (5P)
Without navigation: Audio unit connector F (5P)USB adapter A 5P connector -3. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Audio-navigation unit connector F (5P): disconnected
Audio unit connector F (5P): disconnectedUSB adapter A 5P connector: disconnected Test point 1:With navigation: Audio-navigation unit connector F (5P) Test point 2:USB adapter A 5P connector No. 1 No. 4 No. 2 No. 1 No. 3 No. 3 No. 4 No. 2 Is there continuity?
YES
The USB wires are OK. Go to step 5.
NO
There is an open in the wire(s). Replace the affected shielded harness.
- Open wire check (USB lines)
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Disconnect the following connectors.
With navigation: Audio-navigation unit connector G (5P)
Without navigation: Audio unit connector G (5P)USB adapter B 5P connector -3. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Audio-navigation unit connector G (5P): disconnected
Audio unit connector G (5P): disconnectedUSB adapter B 5P connector: disconnected Test point 1:With navigation: Audio-navigation unit connector G (5P) Test point 2:USB adapter B 5P connector No. 1 No. 4 No. 2 No. 1 No. 3 No. 3 No. 4 No. 2 Is there continuity?
YES
The USB wires are OK. Go to step 5.
NO
There is an open in the wire(s). Replace the affected shielded harness.
- USB adapter check (substitution)
-1. Substitute a known-good USB adapter .
-2. Reconnect all the connectors, and recheck.
Does the symptom go away?
YES
NO
Replace the audio-navigation unit .
NO