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USB device does not function Honda Accord VIII facelift

Audio System (V6) 13 illustrations ~1164 words

USB device does not function

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 Support 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 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 that USB devices may work in newer vehicles, but not in order vehicles of the same model. If UNSUPPORTED appears on the display, the vehicle is OK, there is a software problem with the USB device.

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Scheme 188: USB device does not function
Scheme 188: USB device does not function

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  1. Turn the ignition switch to ON (II).
  2. Turn on the audio system.
  3. Press the AUX button to select USB mode. NOTE: Do not connect the USB device. Is USB NO DATA displayed in the audio-HVAC display? YES -Go to step 4. NO -Go to step 16 .
  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 in the known-good vehicle? YES -Go to step 6. NO -If the display panel displays UNSUPPORTED or MEDIA ERROR, the USB device may not be unsupported or is defective. If the display panel displays USB NO MUSIC, the USB device may have no music files or wrong type music files are on the device. See the Owner's Manual for details on USB device requirements and approved file types.
  6. On the customer's vehicle, connect the customer's USB device to the USB port.
  7. Turn the ignition switch to ON (II).
  8. Turn on the audio system.
  9. Check the USB device operation in the customer's vehicle. Does the USB device work properly in the customer's vehicle? YES -The system is OK at this time. Inspect the connectors of the USB device, USB port and USB adapter for wear. NO -Go to step 10.
  10. Turn the ignition switch to LOCK (0).
  11. On the customer's vehicle, remove the USB device.
  12. Disconnect USB adapter control unit connector B (5P).
  13. Check for continuity between USB adapter control unit connector B (5P) and the USB port 5P connector according to the table. USB ADAPTER CONTROL UNIT CONNECTOR CONTINUITY REFERENCE CHART USB adapter control unit connector USB port connector B1 4 B2 3 B3 2 B4 1 B5 5 Is there continuity? YES -Go to step 17 . NO -Go to step 14.
  14. Disconnect the USB adapter 5P connector.
  15. Check for continuity between the USB adapter 5P connector and the USB port 5P connector according to the table. USB ADAPTER CONTROL UNIT CONNECTOR CONTINUITY REFERENCE CHART USB adapter connector USB port connector 1 4 2 3 2 3 4 1 5 5 Is there continuity? YES -Replace the USB main harness, then recheck. NO -Replace the USB adapter, then recheck.
  16. Turn the ignition switch to LOCK (0).
  17. Measure the voltage between body ground and USB adapter control unit connector A (14P) terminal No. 1. Is there battery voltage? YES -Go to step 19 . NO -Go to step 18.
  18. Measure the voltage between body ground and audio unit connector E (14P) terminal No. 1. Is there battery voltage? YES -Repair an open or high resistance in the wire between USB adapter control unit connector A (14P) terminal No. 1 and audio unit connector E (14P) terminal No. 1. NO -Replace the audio unit: With navigation system (see «WITH NAVIGATION SYSTEM»(ref-423704-S31379446942011092800000) ). Without navigation system (see «WITHOUT NAVIGATION SYSTEM»(ref-423704-S13362398472011092800000) ).
  19. Turn the ignition switch to ON (II).
  20. Measure the voltage between body ground and USB adapter control unit connector A (14P) terminal No. 11. Is there less than 0.2 V? YES -Go to step 21. NO -Repair an open or high resistance in the wire between audio unit connector E (14P) terminal No. 11 and USB adapter control unit connector A (14P) terminal No. 11. If the wire is OK, replace the audio unit; with navigation system (see «WITH NAVIGATION SYSTEM»(ref-423704-S31379446942011092800000) ), without navigation system (see «WITHOUT NAVIGATION SYSTEM»(ref-423704-S13362398472011092800000) ).
  21. Turn the ignition switch to LOCK (0).
  22. Disconnect these items: Audio unit connector E (14P) USB adapter control unit connector A (14P) XM receiver connector A (14P)
  23. Check for continuity between body ground and USB adapter control unit connector A (14P) terminal No. 2. Is there continuity? YES -YES-Repair a short to body ground in the wire between USB adapter control unit connector A (14P) terminal No. 2 and audio unit connector E (14P) terminal No. 2. NO -Go to step 24.
  24. Check for continuity between audio unit connector E (14P) terminal No. 2 and USB adapter control unit connector A (14P) terminal No. 2. Is there continuity? YES -Go to step 25. NO -Repair an open in the wire between the audio unit and the USB adapter control unit.
  25. With navigation system system, disconnect navigation display unit 28P connector.
  26. Check for continuity between body ground and audio unit connector E (14P) according to the table. BODY GROUND CONTINUITY REFERENCE CHART Audio unit connector Wire color E9 RED E10 GRN Is there continuity? YES -There is a short to body ground in the wire (s) between the audio unit and the USB adapter control unit. Replace the affected shielded harness. NO -Go to step 27.
  27. Check for continuity between the terminals of audio unit connector E (14P) according to the table. AUDIO UNIT CONNECTOR TERMINALS CONTINUITY REFERENCE CHART From terminal To terminals E3 (GRY) E9 (RED), E10 (GRN) E9 (RED) E10 (GRN) Is there continuity between any of the terminals? YES -There is a short in the wires between the audio unit and the USB adapter control unit. Replace the affected shielded harness. NO -Go to step 28.
  28. Check for continuity between audio unit connector E (14P) and USB adapter control unit connector A (14P) according to the table. AUDIO UNIT CONNECTOR TERMINALS CONTINUITY REFERENCE CHART Audio unit connector USB adapter control unit connector Wire color E9 A9 RED E10 A10 GRN Is there continuity? YES -Substitute a known-good USB adapter control unit (see «USB ADAPTER CONTROL UNIT REPLACEMENT»(ref-423704-S11515482062011092800000) ), then reconnect all of the connectors, and recheck. If the symptom/indication goes away, replace the original USB adapter control unit (see «USB ADAPTER CONTROL UNIT REPLACEMENT»(ref-423704-S11515482062011092800000) ). If the symptom/indication is still present, replace the audio unit; with navigation system (see «WITH NAVIGATION SYSTEM»(ref-423704-S31379446942011092800000) ), without navigation system (see «WITHOUT NAVIGATION SYSTEM»(ref-423704-S13362398472011092800000) ). NO -There is an open in the wire (s) between the audio unit and the USB adapter control unit. Replace the affected shielded harness.