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USB Device Does Not Function

WARNING: This page is about a different car, the 2011 Honda Fit, 2010 Honda Fit, and 2009 Honda Fit. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • Check the vehicle battery condition first, (see BATTERY TEST )
  • Check the connectors for poor connections or loose terminals.
  • Check the USB device requirement:
    • Mass-storage class ready digital audio player with USB 2.0 port
    • More than 256 MB of RAM
    • Supports MP3, WMA, and AAC (encoded with the i-Tunes) 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 customers USB device in a known-good vehicle of the same year and trim (if possible). Technologies change and are updated frequently which may result in USB devices working in newer vehicles, but not in older vehicles of the same model.
  1. Turn the ignition switch to ON (II), and turn on the audio unit.
  2. Push the AUX button to select USB mode.
    NOTE: Do not connect the USB device for this step.

    Is USB NO DATA displayed? 

    YES  - Go to step 3.

    NO  - Go to step  8

  3. Connect the customer's USB device to the USB adapter.

    Does the USB device work property? 

    YES  - The USB device is OK at this time. Check for loose or poor connections at the audio unit or the audio-navigation unit and the USB adapter unit. Also check the USB adapter and the USB port.

    NO  - Go to step 4.

  4. Turn the ignition switch to LOCK (0).
  5. Connect the customer's USB device to a known-good vehicle (same year/trim) that is equipped with an USB adapter, and check the USB device operation.

    Does the USB device work properly? 

    YES  - Go to step 6.

    NO  - USB device is faulty. Also check the USB cable and the USB port condition.

  6. On the customer's vehicle, remove the USB adapter unit (see USB ADAPTER UNIT REPLACEMENT ).
  7. Disconnect USB adapter unit connector B (5P).
  8. Check for continuity between the terminals of USB adapter unit connector B (5P) and USB adapter 5P connector according to the table.
    CONTINUITY REFERENCE CHARTCONTINUITY REFERENCE CHARTCONTINUITY REFERENCE CHART

    USB adapter unit connector USB adapter connector
    B1 1
    B2 2
    B3 3
    B4 4
    Fig 1: Checking Continuity Between Terminals Of USB Adapter Unit Connector B (5P) And USB Adapter 5P Connector
    G06768847Courtesy of AMERICAN HONDA MOTOR CO., INC.
    Fig 2: Checking Continuity Between Terminals Of USB Adapter Unit Connector And USB Adapter 5P Connector
    G06768848Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - Substitute a known-good USB adapter cable, and recheck. If the symptom/indication goes away, replace the original USB adapter cable. If the symptom/indication is still present, go to step  9.

    NO  - There is an open in the wire(s) between the USB adapter unit and the USB adapter.

    • With navigation: Replace the dashboard wire harness.
    • Without navigation: Replace the affected shielded harness.
  9. Turn the ignition switch to LOCK (0).
  10. Remove the audio unit (see AUDIO UNIT REMOVAL/INSTALLATION ) or the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ). Check that the audio unit or the audio-navigation unit connectors and the USB adapter unit connectors are properly connected.

    Are the connectors properly connected? 

    YES  - Go to step 11.

    NO  - Connect the connectors and recheck.

  11. Disconnect USB adapter unit connector A (14P).
  12. Turn the ignition switch to ON (II).
  13. Measure the voltage between body ground and USB adapter unit connector A (14P) terminals No. 1 and No. 2 individually.
    Fig 3: Measuring Voltage Between Body Ground And USB Adapter Unit Connector A (14P) Terminals No. 1 And No. 2
    G06768849Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage? 

    YES  - There is an open or short in the wire(s) between the USB adapter unit and audio-navigation unit or audio unit.

    • With navigation: Replace the dashboard wire harness.
    • Without navigation: Replace the affected shielded harness.

    NO  - Go to step 14.

  14. Turn the ignition switch to LOCK (0).
  15. Disconnect audio unit or audio-navigation unit connector E (14P).
  16. Check for continuity between audio unit or audio-navigation unit connector E (14P) terminal No. 11 and USB adapter unit connector A (14P) terminal No. 11.
    Fig 4: Checking Continuity Between Audio Unit Or Audio-Navigation Unit Connector E (14P) Terminal No. 11 And USB Adapter Unit Connector A (14P) Terminal No. 11
    G06768850Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - Go to step 17.

    NO  - There is an open in the wire between the USB adapter unit and the audio-navigation unit or audio unit.

    • With navigation: Replace the dashboard wire harness.
    • Without navigation: Replace the affected shielded harness.
  17. Check for continuity between the terminals of audio unit or audio-navigation unit connector E (14P) according to the table.
    CONTINUITY REFERENCE CHARTCONTINUITY REFERENCE CHARTCONTINUITY REFERENCE CHART

    From terminal (wire color) To terminals (wire color)
    E3 (GRY) E9(YEL), E10(GRN)
    E9 (YEL) E10(GRN)
    Fig 5: Checking Continuity Between Terminals Of Audio Unit Or Audio-Navigation Unit Connector E (14P)
    G06768851Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity between any of the terminals? 

    YES  - There is a short in the wires between the USB adapter unit and the audio-navigation unit or audio unit.

    • With navigation: Replace the dashboard wire harness.
    • Without navigation: Replace the affected shielded harness.

    NO  - Go to step 18.

  18. Check for continuity between the terminals of audio unit or audio-navigation unit connector E (14P) and USB adapter unit connector A (14P) according to the table below.
    CONTINUITY REFERENCE CHARTCONTINUITY REFERENCE CHARTCONTINUITY REFERENCE CHART

    Audio unit or audio-navigation unit connector USB adapter unit connector Wire color
    E9 A9 YEL
    E10 A10 GRN
    Fig 6: Checking Continuity Between Terminals Of Audio Unit And USB Adapter Unit Connector A (14P)
    G06768852Courtesy of AMERICAN HONDA MOTOR CO., INC.
    Fig 7: Checking Continuity Between Terminals Audio-Navigation Unit Connector E (14P) And USB Adapter Unit Connector A (14P)
    G06768853Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - Substitute a known-good USB adapter unit (see USB Adapter Unit Replacement ), then reconnect all of the connectors and recheck. If the symptom/indication goes away, replace the original USB adapter unit. If the symptom/indication is still present, replace the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ) or audio unit (see AUDIO UNIT REMOVAL/INSTALLATION ).

    NO  - Open in the wire(s) between the USB adapter unit and the audio-navigation unit or audio unit.

    • With navigation: Replace the dashboard wire harness.
    • Without navigation: Replace the affected shielded harness.
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