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 Battery Test.

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 and CD).

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 HFL DTCs.

Are there any DTCs indicated?

YES -

Troubleshoot the indicated DTC(s).

NO -

Go to step 4.

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

5. Do the HFL Self-Diagnostic Function HandsFreeLink System Self-Diagnostic Function.

Do you hear, "The HFT is OK"?

YES -

Intermittent failure, the system is OK at this time.

NO -

Go to step 6.

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

7. Disconnect the HandsFreeLink control unit 32P connector and audio-navigation unit connector B (24P).

8. Check for continuity between the HandsFreeLink control unit 32P connector and audio-navigation unit connector B (24P) according to the table.













Is there continuity?

YES -

Go to step 9.

NO -

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

9. Check for continuity between body ground and the HandsFreeLink control unit 32P connector according to the table.









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 10.

10. Check for continuity between the terminals of the HandsFreeLink control unit 32P connector 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 goes away, replace the original HandsFreeLink control unit Service and Repair. If the symptom/indication is still present, replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.