Symptom Troubleshooting
HandsFreeLink System Symptom Troubleshooting - No sound when Bluetooth audio is used
No sound when Bluetooth audio is used (with navigation)
NOTE:
- Check the vehicle battery condition first Battery Test.
- Set the fader and the 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 cell phone is compatible with the Acura HFL system. See www.acura.com/handsfreelink for more information.
- Check the connectors for poor connections or loose terminals.
1. Turn the ignition switch to ON (II).
2. Turn on the audio system, and check for sound in each mode (AM/FM and CD or DVD).
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 ELS 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-navigation unit (including the HDD) Audio-Navigation Unit Removal/Installation, and recheck. If the symptom/indication goes away, replace the original audio-navigation unit Audio-Navigation 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. Turn the ignition switch to LOCK (0).
7. Disconnect audio-navigation unit connector C (14P) and the HandsFreeLink control unit 28P connector.
8. Check for continuity between audio-navigation unit connector C (14P) and the HandsFreeLink control unit 28P connector according to the table.
Is there continuity?
YES -
Go to step 9.
NO -
There is an open in the wire(s) between the audio-navigation unit and the HandsFreeLink control unit. Replace the affected shielded harness.
9. Disconnect AcuraLink control unit (XM receiver) connector A (32P) (with AcuraLink) or XM receiver connector A (14P) (without AcuraLink).
10. 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-navigation unit and the HandsFreeLink control unit. Replace the affected shielded harness.
NO -
Go to step 11.
11. 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-navigation unit and the HandsFreeLink control unit. Replace the affected shielded harness.
NO -
Go to step 12.
12. Reconnect audio-navigation unit connector C (14P) and the HandsFreeLink control unit 28P connector.
13. Turn the ignition switch to ON (II).
14. Check if the Bluetooth audio device can be played.
Does the Bluetooth audio play?
YES -
There is an internal malfunction where the connector for either the AcuraLink control unit (XM receiver) (with AcuraLink) or the XM receiver (without AcuraLink) is connected.
NO -
Go to step 15.
15. Turn the ignition switch to LOCK (0).
16. Disconnect the HandsFreeLink control unit 28P connector.
17. Reconnect AcuraLink control unit (XM receiver) connector A (32P) (with AcuraLink) or XM receiver connector A (14P) (without AcuraLink).
18. Turn the ignition switch to ON (II).
19. Check for XM radio sound.
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-navigation unit (including the HDD) Audio-Navigation Unit Removal/Installation, and recheck. If the symptom/indication goes away, replace the original audio-navigation unit Audio-Navigation Unit Removal/Installation.