NAVIGATION SYSTEM(for Sedan) USB Audio System Recognition/Play Error

DTC Code DTC Name
USB Audio System Recognition/Play Error

DESCRIPTION

When a USB device or "iPod" is connected to the USB jack of the No. 1 stereo jack adapter assembly, it must have playable files. The device must also communicate with and be recognized by the navigation ECU. This diagnosis procedure is for when a device is not recognized, or files from the device cannot be played normally.

WIRING DIAGRAM

E277817E05

CAUTION / NOTICE / HINT

Tip:

  • When a large amount of data is in a USB device, it may take a while to begin playback.

  • When using a USB device, files that are protected by copyright cannot be played.

  • When files are not played in the sorted order, perform the following procedure before inspection.

    1. Add numbers in front of the file names.

    2. Put the files in a folder and copy the folder data to the USB device.

PROCEDURE

  1. CHECK USB DEVICE OR "iPod"

    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".

      Tip:

      Refer to System Description for playable files.

      Click here

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

      Tip:

      Refer to System Description for compatible formats and versions.

      Click here

      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
    A

    END (USB DEVICE FORMAT WAS INCOMPATIBLE, "iPod" VERSION IS INCOMPATIBLE, OR NO PLAYABLE FILES EXIST)

    B

  2. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU - NO. 1 STEREO JACK ADAPTER ASSEMBLY)

    1. Disconnect the u4 navigation ECU connector.

    2. Disconnect the u1 No. 1 stereo jack adapter assembly connector.

    3. E226480C62

      *a

      Front view of wire harness connector

      (to Navigation ECU)

      *b

      Front view of wire harness connector

      (to No. 1 Stereo Jack Adapter Assembly)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      u1-1 (UP1) - u4-1 (USV1)

      Always

      Below 1 Ω

      u1-2 (UDO-) - u4-2 (US1-)

      Always

      Below 1 Ω

      u1-3 (UDO+) - u4-3 (US1+)

      Always

      Below 1 Ω

      u1-4 (UJSG) - u4-4 (UGD1)

      Always

      Below 1 Ω

      u1-5 (UJSS) - u4-5 (USG1)

      Always

      Below 1 Ω

      u1-1 (UP1) - Body ground

      Always

      10 kΩ or higher

      u1-2 (UDO-) - Body ground

      Always

      10 kΩ or higher

      u1-3 (UDO+) - Body ground

      Always

      10 kΩ or higher

      u1-4 (UJSG) - Body ground

      Always

      10 kΩ or higher

      u1-5 (UJSS) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT NAVIGATION ECU (NO. 1 STEREO JACK ADAPTER ASSEMBLY POWER SOURCE)

    1. Reconnect the u4 navigation ECU connector.

    2. E226479C13

      *a

      Front view of wire harness connector

      (to No. 1 Stereo Jack Adapter Assembly)

      Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      u1-1 (UP1) - u1-4 (UJSG)

      Ignition switch ACC

      5 V

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE NAVIGATION ECU

    Click here

    OK

  4. FORMAT USB DEVICE OR RESTORE "iPod" AND RECHECK

    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 a backup of the music data is available before performing this operation.

      OK

      Malfunction disappears.

    Result

    Proceed to

    OK

    NG
    OK

    END

    NG

  5. REPLACE USB DEVICE OR "iPod"

    1. Turn the ignition switch off.

      Tip:

      When this malfunction occurs, it is necessary to turn the ignition switch off 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.

      Tip:

      • 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.

        Click here

    Result

    Proceed to

    NEXT
    NEXT

  6. CHECK USB DEVICE OR "iPod"

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

      OK

      USB device or "iPod" is recognized properly and the information is displayed on the screen.

    Result

    Proceed to

    OK

    NG
    OK

    USB DEVICE OR "iPod" WAS INCOMPATIBLE OR DEFECTIVE

    NG

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here