Symptom Troubleshooting

HandsFreeLink System Symptom Troubleshooting - The HFL message cannot be heard or are weak

The HFL message cannot be heard or are weak

NOTE:

- Vehicles equipped with AcuraLink, go to AcuraLink messages cannot be heard or are weak.
- Before doing this troubleshooting, refer to General Troubleshooting Information Initial Inspection and Diagnostic Overview to make sure the phone is compatible and configured correctly. You can also check online at www.acura.com/handsfreelink, or call the HFL support desk at 888-528-7876.

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, XM, CD/DVDs, Navigation, etc.).

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. Check for DTCs with the HDS.

Are there any DTCs?

YES -

Repair the indicated DTCs.

NO -

Go to step 4.

4. Press the HFL TALK button.

Does the audio system mute when HFL messages are being played?

YES -

Go to step 5.

NO -

Go to step 10.

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

6. Disconnect stereo amplifier connector C (23P) and the HandsFreeLink control unit 28P connector.

7. Check for continuity between HandsFreeLink control unit 28P connector terminals No. 11 and No. 25 and stereo amplifier connector C (23P) terminals No. 12 and No. 13 according to the table.









Is there continuity?

YES -

Go to step 8.

NO -

There is an open in the wire(s) between the HandsFreeLink control unit and the stereo amplifier. Replace the affected shielded harness.�

8. Check for continuity between body ground and stereo amplifier connector C (23P) terminals No. 12 and No. 13 individually.





Is there continuity?

YES -

There is a short to body ground in the wire(s) between the HandsFreeLink control unit and the stereo amplifier. Replace the affected shielded harness.�

NO -

Go to step 8.

9. Check for continuity between the terminals of stereo amplifier connector C (23P) according to the table.









Is there continuity between any of the terminals?

YES -

There is a short in the wire(s) between the HandsFreeLink control unit and the stereo amplifier. Replace the affected shielded harness.�

NO -

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. If the symptom/indication is still present, replace the stereo amplifier Service and Repair.�

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

11. Disconnect the HandsFreeLink control unit 28P connector and stereo amplifier connector C (23P).

12. Check for continuity between HandsFreeLink control unit 28P connector terminal No. 3 and audio unit connector B (32P) terminal No. 24.





Is there continuity?

YES -

Go to step 13.

NO -

Repair an open in the wire between the HandsFreeLink control unit and the audio unit.�

13. Check for continuity between HandsFreeLink control unit 28P connector terminal No. 3 and body ground.





Is there continuity?

YES -

Repair a short to body ground in the wire between the HandsFreeLink control unit and the audio unit.�

NO -

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. If the symptom/indication is still present, replace the audio unit Audio Unit Removal / Installation.�