No Sound When Bluetooth Audio Is Used (With Navigation)

HandsFreeLink System Symptom Troubleshooting - No sound when Bluetooth audio is used

No sound when Bluetooth audio is used

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 customer's Bluetooth cell phone is compatible with the Honda HFL system.
* Check the connectors for poor connections or loose terminals.

1. Determine possible failure area (audio system, HFL system):

Determine possible failure area (audio system, HFL system)
-1. Turn the ignition switch to ON (II).

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

Does the audio system work normally and is the audio output from the speaker normal when playing various audio sources?
-YES- Go to step 2.
-NO- Refer to the audio system Symptom Troubleshooting.

2. Determine possible failure area (pairing, others):

Determine possible failure area (pairing, others)
-1. Pair an approved known-good cell phone with Bluetooth audio to the vehicle.

Can you pair an approved cell phone with Bluetooth audio?
-YES- Go to step 3.
-NO- Go to Bluetooth cell phone cannot be paired troubleshooting Bluetooth Cell Phone Cannot Be Paired.

3. Problem verification:

Problem verification
-1. Check if the cell phone with Bluetooth audio can be played.

Does the Bluetooth audio play?
-YES- Intermittent failure, the system is OK at this time, or there could be an issue with the customer's phone.
-NO- The failure is duplicated, go to step 4.

4. Shorted wire check (AUDIO lines):

Shorted wire check (AUDIO lines)
-1. Turn the ignition switch to LOCK (0).

-2. Disconnect the following connectors.





-3. Check for continuity between these test points and body ground individually.














Is there continuity?
-YES- There is a short to body ground in the wire(s) between the HandsFreeLink control unit and the audio-navigation unit. Replace the affected shielded harness.
-NO- Go to step 5.

5. Shorted wire check (SH_GA_AUDIO line to another lines):

Shorted wire check (SH_GA_AUDIO line to another lines)
-1. Check for continuity between test points 1 and 2.














Is there continuity between any of the terminals?
-YES- There is a short in the wires between the HandsFreeLink control unit and the audio-navigation unit. Replace the affected shielded harness.
-NO- Go to step 6.

6. Open wire check (AUDIO lines):

Open wire check (AUDIO lines)
-1. Check for continuity between test points 1 and 2.


















Is there continuity?
-YES- Go to step 7.
-NO- There is an open in the wire(s) between the HandsFreeLink control unit and the audio-navigation unit. Replace the affected shielded harness.

7. Audio-navigation unit check:

Audio-navigation unit check
-1. Substitute a known-good HandsFreeLink control unit Service and Repair, and recheck.

Does the symptom go away?
-YES- Replace the original HandsFreeLink control unit.
-NO- Replace the audio-navigation unit Audio-Navigation Unit Removal and Installation.