The HFL Messages and Voice Prompts Cannot Be Heard or Are Weak (Without Navigation)

HandsFreeLink System Symptom Troubleshooting - The HFL messages and voice prompts cannot be heard or are weak

The HFL messages and voice prompts cannot be heard or are weak (without navigation)

NOTE: Check the vehicle battery condition first Battery Test.

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

2. Turn on the audio unit, and check for sound in each mode (AM/FM, XM, USB, CD, etc.).

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 Premium Audio).

3. Do the HFL Self-Diagnostic Function.

Do you hear, "The hands free system is OK"?

YES -

Go to step 4.

NO -

Go to step 5.

4. Press the HFL TALK button.

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

YES -

Intermittent failure, the system is OK at this time.

NO -

Go to step 15.

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

6. Connect the HDS to the DLC.

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

8. Check for DTCs with the HDS.

Are there any DTCs indicated?

YES -

Troubleshoot the indicated DTCs.

NO -

Go to step 9.

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

10. Do the HFL Switch Test HFL Switch Test.

Is the switch OK?

YES -

Go to step 11.

NO -

Replace the HFL switch HFL Switch Replacement.

11. Disconnect audio unit connector B (20P) and the HandsFreeLink control unit 28P connector.

12. Check for continuity between HandsFreeLink control unit 28P connector terminals No. 11 and No. 25 and audio unit connector B (20P) terminals No. 19 and No. 9 respectively.





Is there continuity?

YES -

Go to step 13.

NO -

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

13. Check for continuity between body ground and audio unit connector B (20P) terminals No. 9 and No. 19 individually.





Is there continuity?

YES -

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

NO -

Go to step 14.

14. Check for continuity between the terminals of audio unit connector B (20P) according to the table.









Is there continuity?

YES -

There is a short in the wires between the HandsFreeLink control unit and the audio unit. 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 audio unit Audio Unit Removal / Installation.

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

16. Disconnect the HandsFreeLink control unit 28P connector and audio unit connector B (20P).

17. Check for continuity between HandsFreeLink control unit 28P connector terminal No. 3 and audio unit connector B (20P) terminal No. 20.





Is there continuity?

YES -

Go to step 18.

NO -

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

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





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.