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USB device does not function (without navigation)

WARNING: This page is about a different car, the 2013 Honda Fit and 2012 Honda Fit. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • Check the vehicle battery condition first BATTERY TEST
  • Check the connectors for poor connections or loose terminals.
  • Check the USB device compatibility:
    • 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).
  2. Turn on the audio unit.
  3. Press the AUX button to select USB mode.
    NOTE: Do not connect the USB device.

    Is USB NO DATA displayed in the audio display? 

    YES  -Go to step 4.

    NO  -Go to step  9.

  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 a USB adapter, and check the USB device operation.

    Is the USB device working 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 terminals of USB adapter unit connector B (5P) and the USB jack 5P connector according to the table.
    USB adapter unit connector USB jack connector
    B1 4
    B2 3
    B3 2
    B4 1
    B5 5
    Fig 1: Identifying USB Adapter Unit Connector B (5P) Terminals
    G08083117Courtesy of AMERICAN HONDA MOTOR CO., INC.
    Fig 2: Identifying USB Jack 5P Connector Terminals
    G08083118Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Substitute a known-good USB adapter, and recheck. If the symptom/indication goes away, replace the original USB adapter. If the symptom/indication is still present, go to step 10.

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

  9. Turn the ignition switch to LOCK (0).
  10. Measure the voltage between USB adapter unit connector A (14P) terminal No. 1 and body ground.
    Fig 3: Measuring Voltage Between USB Adapter Unit Connector A (14P) Terminal No. 1 And Body Ground
    G08083119Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage? 

    YES  -Go to step  12.

    NO  -Check for an open or a short to ground in the wire between the audio unit and the USB adapter unit. If the wire is OK, substitute a known-good audio unit (see AUDIO UNIT REMOVAL/INSTALLATION  ), and recheck. If the symptom goes away, replace the original audio unit (see AUDIO UNIT REMOVAL/INSTALLATION  ).

  11. Measure the voltage between USB adapter unit connector A (14P) terminal No. 2 and body ground.
    Fig 4: Measuring Voltage Between USB Adapter Unit Connector A (14P) Terminal No. 2 And Body Ground
    G08083120Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage? 

    YES  -Go to step  13.

    NO  -Substitute a known-good USB adapter unit (see WITHOUT NAVIGATION (WITH USB ADAPTER UNIT)  ), and recheck.

  12. Turn the ignition switch to ON (II).
  13. Measure the voltage between USB adapter unit connector A (14P) terminal No. 2 and body ground.
    Fig 5: Measuring Voltage Between USB Adapter Unit Connector A (14P) Terminal No. 2 And Body Ground
    G08083121Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there less than 2.0 V? 

    YES  -Go to step  18.

    NO  -Go to step 14.

  14. Turn the ignition switch to LOCK (0).
  15. Remove the audio unit (see AUDIO UNIT REMOVAL/INSTALLATION  ), and disconnect audio unit connector E (14P).
  16. Disconnect USB adapter unit connector A (14P).
  17. Check for continuity between USB adapter unit connector A (14P) terminal No. 2 and audio unit connector E (14P) terminal No. 2.
    Fig 6: Checking Continuity Between USB Adapter Unit Connector A (14P) Terminal No. 2 And Audio Unit Connector E (14P) Terminal No. 2
    G08083122Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Substitute a known-good audio unit (see AUDIO UNIT REMOVAL/INSTALLATION  ), reconnect all the connectors, and recheck. If the symptom/indication goes away, replace the original audio unit (see AUDIO UNIT REMOVAL/INSTALLATION  ). If the symptom/indication is still present, replace the USB adapter unit (see USB ADAPTER UNIT REPLACEMENT  ).

    NO  -Repair an open in the wire between the USB adapter unit and the audio unit.

  18. Measure the voltage between USB adapter unit connector A (14P) terminal No. 11 and body ground.
    Fig 7: Measuring Voltage Between USB Adapter Unit Connector A (14P) Terminal No. 11 And Body Ground
    G08083123Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there less than 0.2 V? 

    YES  -Go to step  20.

    NO  -Repair an open in the wire between the USB adapter control unit and the audio unit.

  19. Turn the ignition switch to LOCK (0).
  20. Remove the audio unit (see AUDIO UNIT REMOVAL/INSTALLATION  ), and disconnect audio unit connector C (14P).
  21. Disconnect USB adapter unit connector A (14P).
  22. Check for continuity between terminals of audio unit connector C (14P) according to the table.
    From terminals To terminals
    C3 (GRY) C9(YEL), C10(GRN)
    C9 (YEL) C10(GRN)
    Fig 8: Identifying Audio Unit Connector C (14P) Terminals
    G08083124Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity between any of the terminals? 

    YES  -There is a short in the wires between the audio unit and the USB adapter unit. Replace the affected shielded harness.

    NO  -Go to step 23.

  23. Check for continuity between terminals of audio unit connector C (14P)and USB adapter unit connector A (14P) according to the table.
    Audio unit connector USB adapter unit connector Wire color
    C9 A9 YEL
    C10 A10 GRN
    Fig 9: Identifying Audio Unit Connector C (14P) Terminals
    G08083125Courtesy of AMERICAN HONDA MOTOR CO., INC.
    Fig 10: Identifying USB Adapter Unit Connector A (14P) Terminals
    G08083126Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Substitute a known-good USB adapter unit (see WITHOUT NAVIGATION (WITH USB ADAPTER UNIT)  ), then reconnect all of the connectors, and recheck. If the symptom/indication goes away, replace the original USB adapter unit (see USB ADAPTER UNIT REPLACEMENT  ). If the symptom/indication is still present, replace the audio unit (see AUDIO UNIT REMOVAL/INSTALLATION  ).

    NO  -There is an open in the wire(s) between the audio unit and the USB adapter unit. Replace the affected shielded harness.

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