No Sound When Bluetooth Audio Is Used (With Navigation)
HandsFreeLink System Symptom Troubleshooting - No sound when Bluetooth audio is used (With navigation)
No sound when Bluetooth audio is used (with 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, XM, 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 speaker(s) No Sound Is Heard From the Speaker(s) (Display Is Normal) (With ELS Audio System) (With Navigation System).
3. Press the DISC/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 (With Navigation System), and recheck. If the symptom/indication goes away, replace the original audio unit Audio Unit Removal/Installation (With Navigation System).
4. Check if it is connected when switching to Bluetooth audio screen by pressing the DISC/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 Bluetooth audio device can be played.
Does the Bluetooth audio play?
YES -
Intermittent failure, the audio unit 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 the DTCs with the HDS.
Is there any DTCs indicated?
YES -
Go to indicated DTCs troubleshooting.
NO -
Go to step 10.
10. Turn on the audio unit, and check for XM radio sound.
Is the sound is normal?
YES -
Go to step 11.
NO -
Go to step 14.
11. Turn the ignition switch to LOCK (0).
12. Disconnect audio unit connector B (14P) and the HandsFreeLink control unit 28P connector.
13. Check for continuity between the audio unit connector B (14P) and the HandsFreeLink control unit 28P connector according to the table.
Is there continuity?
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 -
There is an open in the wire(s) between the audio unit and the HandsFreeLink control unit. Replace the affected shielded harness.
14. Turn the ignition switch to LOCK (0).
15. Disconnect these connector:
- Audio unit connector B (14P)
- AcuraLink control unit (XM receiver) connector A (32P) (USA models)
- XM receiver connector A (14P) (Canada models)
- HandsFreeLink control unit 28P connector
- USB adapter control unit connector A (14P)
16. Check for continuity between the HandsFreeLink control unit 28P connector and body ground according to the table.
Is there continuity?
YES -
There is a short to body ground in the wire(s) between the audio unit, the AcuraLink control unit (XM receiver) or XM receiver, the USB adapter control unit, and the HandsFreeLink control unit. Replace the affected shielded harness.
NO -
Go to step 17.
17. Check for continuity between the audio unit connector B (14P) and the HandsFreeLink control unit 28P connector according to the table.
Is there continuity?
YES -
Go to step 18.
NO -
There is an open in the wire(s) between the audio unit and the HandsFreeLink control unit. Replace the affected shielded harness.
18. Check for continuity between the terminals of the HandsFreeLink control unit 28P connector according to the table.
Is there continuity?
YES -
There is a short in the wire(s) between the audio unit and the HandsFreeLink control unit. Replace the affected shielded harness.
NO -
Go to step 19.
19. Reconnect the audio unit connector B (14P) and the HandsFreeLink control unit 28P connector.
20. Turn the ignition switch to ON (II).
21. Check if the cell phone's Bluetooth audio function plays.
Does the cell phone's Bluetooth audio function play normally?
YES -
There is an internal malfunction where the connector for either the AcuraLink control unit (XM receiver) (USA models) or the XM receiver (Canada models) is connected.
NO -
Go to step 22.
22. Turn the ignition switch to LOCK (0).
23. Disconnect the HandsFreeLink control unit 28P connector.
24. Reconnect the AcuraLink control unit connector A (32P) (USA models) or XM receiver connector A (14P) (Canada models) and USB adapter control unit connector A (14P).
25. Turn the ignition switch to ON (II).
26. Check the operation of the reconnected unit.
Is the system 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 (With Navigation System), and recheck. If the symptom/indication goes away, replace the original audio unit Audio Unit Removal/Installation (With Navigation System).