USB input sound is low or cannot be heard (with navigation)
- Check the vehicle battery condition first (see 12 VOLT BATTERY TEST ).
- Check the connectors for poor connections or loose terminals.
- Not all players and player functions work with the USB adapter. Please see the owner's manual for more information. Always test the customer's 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 older vehicles of the same model.
- Turn the ignition switch ON (II).
- Check to see if there is a specific speaker that has no sound.
Do all speakers make a sound?
YES -Go to step 3.
NO -Go to NO SOUND IS HEARD FROM THE SPEAKER(S) .
- Turn the ignition switch to LOCK (0).
- On the customer's vehicle, connect the customer's USB device to the USB port.
- Turn the ignition switch to ON (II).
- Turn on the audio-navigation unit.
- Press the AUX button until USB appears on the navigation display.
- Check if the USB device can be operated with the audio-navigation unit (Folders of Files UP/DOWN, etc.).
Can you operate the USB device, but there is no sound heard?
YES -Go to step 9.
NO -If the sound is normal, the USB device is OK at this time. If USB device cannot be operated, go to USB DEVICE DOES NOT FUNCTION TROUBLESHOOTING .
- Turn the ignition switch to LOCK (0).
- 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 11.
NO -The USB device is faulty. Also check the USB port and the USB adapter connector condition.
- Return to the customer's vehicle.
- Remove the audio-navigation unit (see
AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION
), and disconnect audio-navigation unit connector E (14P).NOTE:
- Eject all the audio discs before removing the audio-navigation unit to prevent damaging the CD player's load mechanism.
- Remove the PC card before removing the audio-navigation unit.
- Disconnect USB adapter control unit connector A (14P).
- Check for continuity between body ground and audio-navigation unit connector E (14P) according to the table.CONNECTOR TERMINAL REFERENCE CHART
Audio-navigation unit connector Wire color E1 WHT E2 BLK E7 GRN E8 RED Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there any continuity?
YES -There is a short in the wire(s) between audio-navigation unit and USB adapter control unit. Replace the affected shielded harness.
NO -Go to step 15.
- Check for continuity between the audio-navigation unit connector E (14P) according to the table.CONNECTOR TERMINAL REFERENCE CHART
From terminal (wire color) To terminals (wire color) E3 (GRY) E1 (WHT), E2 (BLK), E7 (GRN), E8 (RED) E1 (WHT) E2 (BLK), E7 (GRN), E8 (RED) E2 (BLK) E7 (GRN), E8 (RED) E7 (GRN) E8 (RED) Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity between any of the terminals?
YES -There is a short in the wire(s) between the audio-navigation unit and the USB adapter control unit. Replace the affected shielded harness.
NO -Go to step 16.
- Check for continuity between audio-navigation unit connector E (14P) and USB adapter control unit connector A (14P) according to the table.CONNECTOR TERMINAL REFERENCE CHART
Audio-navigation unit connector USB adapter control unit connector Wire color E1 A1 WHT E2 A2 BLK E7 A7 GRN E8 A8 RED Courtesy of AMERICAN HONDA MOTOR CO., INC.
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES -Substitute a known-good USB adapter control unit (see USB ADAPTER CONTROL UNIT REPLACEMENT ), 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 ). If the symptom/indication is still present, replace the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ).
NO -There is an open in the wire(s) between the audio-navigation unit and the USB adapter control unit. Replace the affected shielded harness.