USB Audio System Recognition/Play Error: Procedure

1. Disconnect the USB device or "iPod" from the No. 1 stereo jack adapter assembly.
2. Check if playable files are present on the USB device or "iPod".

   HINT: 

   Refer to System Description for playable files. Refer to SYSTEM DESCRIPTION .

3. Check if the USB device is a compatible format or "iPod" is a compatible version.

   HINT: 

   Refer to System Description for compatible formats and versions. Refer to SYSTEM DESCRIPTION .

   RESULT
   
   

   Result	Proceed to
   No playable files exist, or incompatible device format or version	A
   Playable files exist, and compatible device format or version	B

B → See step   2 

A → USB DEVICE FORMAT WAS INCOMPATIBLE, "iPod" VERSION WAS INCOMPATIBLE, OR NO PLAYABLE FILES PRESENT 

1. Disconnect the E105 radio receiver assembly connector.
2. Disconnect the E104 No. 1 stereo jack adapter assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance 

   Tester Connection	Condition	Specified Condition
   E105-1 (UPO-) - E104-1 (UPI-)	Always	Below 1 Ω
   E105-2 (UDI-) - E104-2 (UDO-)
   E105-3 (UDO+) - E104-3 (UDO+)
   E105-4 (USEG) - E104-4 (UJSG)
   E105-1 (UPO-) - Body ground	Always	10 kΩ or higher
   E105-2 (UDI-) - Body ground
   E105-3 (UDO+) - Body ground
   E105-4 (USEG) - Body ground

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the E104 No. 1 stereo jack adapter assembly connector.
   Fig 1: Checking Radio Receiver Assembly (No. 1 Stereo Jack Adapter Assembly Power Source)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage 

   Tester Connection	Switch Condition	Specified Condition
   E104-1 (UPI-) - E104-4 (UJSG)	Ignition switch ACC	5 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to No. 1 Stereo Jack Adapter Assembly)

NG → See step   7 

OK: Go to next step 

1. Delete all files in the USB device or "iPod" and format/restore it.
2. Save the data again and check if it can be played on the in-vehicle device.
   NOTE:

   Formatting a USB device or restoring an "iPod" erases all music on the device.

   Ensure that backup music data is available before performing this operation.

   OK

   Malfunction disappears.

NG → See step   5 

OK → END 

1. Turn the ignition switch off.

   HINT: 

   When this malfunction occurs, it is necessary to turn off the ignition switch to make it possible for the vehicle to recognize a new device when it is connected.

2. Turn the ignition switch to ACC.
3. Connect a known good USB device or "iPod" to the No. 1 stereo jack adapter assembly.

   HINT: 

   • If the malfunction occurred when a USB device was in use, use another USB device for the inspection. If the malfunction occurred when an "iPod" was in use, use another "iPod" for the inspection.
   • Refer to System Description for compatible formats and versions. Refer to SYSTEM DESCRIPTION .

NEXT: Go to next step 

1. Check if a USB device or "iPod" is recognized by the radio receiver assembly, and if information such as track, artist and album names is displayed on the screen.

   OK

   Malfunction disappears.

NG → See step   8 

OK → USB DEVICE OR "iPod" WAS INCOMPATIBLE OR DEFECTIVE