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 12 Volt Battery Test.
- Check the connectors for poor connections or loose terminals.

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

2. Check that the audio system is operating normally from different audio sources (AM, FM, CD, etc.). Also make sure the front speakers operate normally.

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 -

Go to no sound is heard from the speaker(s), without navigation. No Sound Is Heard From The Speaker(s) (Display Is Normal) (Without Navigation)

3. Check the HandsFreeLink System Condition, in the HFL Self-Diagnostic Function.

Do you hear "The HFT is OK"?

YES -

Intermittent failure, the system is OK at this time.

NO -

Go to step 4.

4. Connect the HDS to the DLC.

5. Turn the ignition switch to LOCK (0), and then back to ON (II).

6. Check for DTCs with the HDS.

Are there any DTCs indicated?

YES -

Do the indicated DTCs, troubleshooting.

NO -

Go to step 7.

7. Do the HFL Switch Test HFL Switch Test.

Is the switch OK?

YES -

Go to step 8.

NO -

Replace the HFL switch HFL Switch Replacement.

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

9. Remove the audio unit Audio Unit Removal / Installation, and disconnect audio unit connector B (12P).

10. Disconnect the HandsFreeLink control unit 28P connector.

11. Check for continuity between HandsFreeLink control unit 28P connector terminals No. 11 and No. 25 and audio unit connector B (12P) terminals No. 10 and No. 9 respectively.





Is there continuity?

YES -

Go to step 12.

NO -

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

12. Check for continuity between body ground and audio unit connector B (12P) terminals No. 9 and No. 10 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 13.

13. Check for continuity between the terminals of audio unit connector B (12P) according to the table.









Is there continuity between any of the terminals?

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 is still present, replace the audio unit Audio Unit Removal / Installation.