Symptom Troubleshooting
HandsFreeLink System Symptom Troubleshooting - No sound when Bluetooth audio is used
No sound when Bluetooth audio is used (without navigation)
NOTE:
- Check the vehicle battery condition first Battery Test.
- Check the connectors for poor connections or loose terminals.
- Set the fader and balance positions to the center.
- Check if the cell phone with Bluetooth audio functions normally.
- Make sure the cell phone is properly paired.
- Make sure the client's phone is compatible with the Acura HFL system. See www.acura.com/handsfreelink for more information.
1. Turn the ignition switch to ON (II).
2. Turn on the audio unit, and check for sound in each mode (AM/FM and CD).
Is the sound normal?
YES -
Go to step 3.
NO -
Go to Sound Quality Diagnosis Audio System Sound Quality Diagnosis or No sound is heard from the speaker(s) (display is normal) troubleshooting No Sound Is Heard From the Speaker(s) (Display Is Normal) (With Premium Audio).�
3. Press the AUX button, and check if it changes to Bluetooth audio source.
Does the audio system change to Bluetooth audio source?
YES -
Go to step 4.
NO -
Substitute a known-good audio unit Audio Unit Removal/Installation, and recheck. If the symptom/indication goes away, replace the original audio unit Audio Unit Removal/Installation.�
4. Check if it is connected when switching to Bluetooth audio screen by pressing the AUX button.
Is NO CONNECTION displayed?
YES -
Go to Bluetooth cell phone cannot be paired troubleshooting Symptom Troubleshooting.�
NO -
Go to step 5.
5. Check if the Bluetooth audio device can be played.
Does the Bluetooth audio play?
YES -
Intermittent failure, the system is OK at this time.�
NO -
Go to step 6.
6. Connect the HDS to the DLC.
7. Clear the DTCs with the HDS.
8. Turn the ignition switch to LOCK (0) and then back to ON (II).
9. Check for DTCs.
Is there any DTCs indicated?
YES -
Troubleshoot the indicated DTCs.�
NO -
Go to step 10.
10. Turn the ignition switch to LOCK (0).
11. Disconnect audio unit connector E (14P) and the HandsFreeLink control unit 28P connector.
12. Check for continuity between audio unit connector E (14P) and the HandsFreeLink control unit 28P connector according to the table.
Is there continuity?
YES -
Go to step 13.
NO -
There is an open in the wire(s) between the audio unit and the HandsFreeLink control unit. Replace the affected shielded harness.�
13. Disconnect XM receiver connector A (14P) and USB adapter control unit connector A (14P).
14. Check for continuity between body ground and the HandsFreeLink control unit 28P connector according to the table.
Is there continuity?
YES -
There is a short to body ground in the wire(s) between the audio unit and the HandsFreeLink control unit. Replace the affected shielded harness.�
NO -
Go to step 15.
15. Check for continuity between the terminals of the HandsFreeLink control unit 28P connector according to the table.
Is there continuity between any of the terminals?
YES -
There is a short in the wires between the audio unit and the HandsFreeLink control unit. Replace the affected shielded harness.�
NO -
Go to step 16.
16. Reconnect the audio unit connector E (14P) and the HandsFreeLink control unit 28P connector.
17. Turn the ignition switch to ON (II).
18. Check if the Bluetooth audio device can be played.
Does the Bluetooth audio play?
YES -
There is an internal malfunction in the connector for either the XM receiver or USB adapter control unit.�
NO -
Go to step 19.
19. Turn the ignition switch to LOCK (0).
20. Disconnect the HandsFreeLink control unit 28P connector.
21. Reconnect XM receiver connector A (14P) and USB adapter control unit connector A (14P).
22. Turn the ignition switch to ON (II).
23. Check for sound in each mode (XM and USB).
Is the sound normal?
YES -
Substitute a known-good HandsFreeLink control unit Service and Repair, and recheck. If the symptom/indication goes away, replace the original HandsFreeLink control unit Service and Repair.�
NO -
Substitute a known-good audio unit Audio Unit Removal/Installation, and recheck. If the symptom/indication goes away, replace the original audio unit Audio Unit Removal/Installation.�