No Sound When Bluetooth Audio Is Used (Without Navigation)
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.
- 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 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), or press the engine start/stop button to select the ON mode.
2. Turn on the audio unit, and check for sound in each mode (AM/FM and CDs).
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) (Without Navigation).
3. Press the USB/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 -
Go to Bluetooth audio does not work troubleshooting Bluetooth Audio Does Not Work (Without Navigation).
4. Check if it is connected when switching to Bluetooth audio screen by pressing the USB/AUX button.
Is NO CONNECTION displayed?
YES -
Go to Bluetooth cell phone cannot be paired troubleshooting Bluetooth Cell Phone Cannot Be Paired.
NO -
Go to step 5.
5. Check if the 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. Turn on the audio unit, and check for sound in each mode (XM and USB).
Is the sound is normal?
YES -
Go to step 7.
NO -
Go to step 10.
7. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
8. Disconnect audio unit connector C (14P) and the HandsFreeLink control unit 28P connector.
9. Check for continuity between audio unit connector C (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.
10. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
11. Disconnect these items:
- Audio unit connector C (14P)
- XM receiver connector A (14P)
- USB adapter control unit connector A (14P)
- HandsFreeLink control unit 28P connector
12. 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 and the HandsFreeLink control unit. Replace the affected shielded harness.
NO -
Go to step 13.
13. Check for continuity between audio unit connector C (14P) and the HandsFreeLink control unit 28P connector according to the table.
Is there continuity?
YES -
Go to step 14.
NO -
There is an open in the wire(s) between the audio unit and the HandsFreeLink control unit. Replace the affected shielded harness.
14. 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 15.
15. Reconnect the audio unit connector C (14P) and the HandsFreeLink control unit 28P connector.
16. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
17. 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 18.
18. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
19. Disconnect the HandsFreeLink control unit 28P connector.
20. Reconnect XM receiver connector A (14P) and the USB adapter control unit connector A (14P).
21. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
22. 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, and recheck. If the symptom/indication goes away, replace the original audio unit Audio Unit Removal / Installation.