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 12 Volt 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 customer's phone is compatible with the Honda HFL system.

1. Turn the ignition switch to ON (II).

2. Check that the audio system is operating normally and the speaker sound levels from different audio sources (AM/FM and CD).

Does the audio system work normally and is the audio output from the speaker normal when playing various audio sources?

YES -

Go to step 3.

NO -

Refer to the audio system Symptom Troubleshooting.

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 Symptom Troubleshooting.

4. Check if the Bluetooth audio device is connected when switching to Bluetooth audio screen by pressing the USB/AUX button.

Is NO CONNECTION displayed?

YES -

Substitute a known-good Bluetooth audio device, and recheck.

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. Do the HFL Self-Diagnostic Function, and check for HFL DTCs.

Are there any HFL DTCs indicated?

YES -

Troubleshoot the indicated HFL DTCs.

NO -

Go to step 7.

7. Turn the ignition switch to LOCK (0).

8. Disconnect the HandsFreeLink control unit 32P connector and audio-navigation unit connector E (14P).

9. Check for continuity between audio-navigation unit connector E (14P) and the HandsFreeLink control unit 32P connector according to the table.













Is there continuity?

YES -

Go to step 10.

NO -

There is an open in the wire between the audio-navigation unit and the HandsFreeLink control unit. Replace the affected shielded harness.

10. Check for continuity between body ground and audio-navigation unit connector E (14P) 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 audio-navigation unit connector E (14P) 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 -

Substitute a known-good HandsFreeLink control unit, Service and Repair and recheck. If the symptom goes away, replace the original HandsFreeLink control unit Service and Repair. If the symptom/indication is still present, replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.