The HFL Messages and Voice Prompts Cannot Be Heard or Are Weak(With 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 (with 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, Navigation, 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), with 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. Check for the HFL DTCs.

Are there any HFL DTCs indicated?

YES -

Do the indicated HFL DTCs troubleshooting.

NO -

Go to step 5.

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

6. Do the HFL Switch Test HFL Switch Test.

Is the switch OK?

YES -

Go to step 7.

NO -

Replace the HFL-navigation voice control switch Voice Control Switch Replacement.

7. Remove the audio-navigation unit Audio-Navigation Unit Removal/Installation, and disconnect audio-navigation unit connector B (16P).

8. Disconnect the HandsFreeLink control unit 32P connector.

9. Check for continuity between HandsFreeLink control unit 32P connector terminals No. 13 and No. 29 and audio-navigation unit connector B (16P) terminals No. 4 and No. 12 respectively.





Is there continuity?

YES -

Go to step 10.

NO -

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

10. Check for continuity between body ground and audio-navigation unit connector B (16P) terminals No. 4 and No. 12 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 11.

11. Check for continuity between the terminals of audio-navigation unit connector B (16P) 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-navigation 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-navigation unit.