The HFL Messages Cannot Be Heard or Are Weak (With Navigation)

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

The HFL messages 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), or press the engine start/stop button to select the ON mode.

2. Check that the audio system is operating normally and the speaker sound levels from different audio sources (AM/FM, XM, CD, 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. Press and hold the HANG-UP button for more than 5 seconds.

Do you hear the message "The HFT is OK"?

YES -

Intermittent failure, the system is OK at this time.

NO -

Go to step 4.

4. Do the HFL Self-Diagnostic Function, and check for HFL DTCs.

Are there any DTCs indicated?

YES -

Repair the indicated DTCs.

NO -

Go to step 5.

5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

6. Do the HFL Switch Test HFL Switch Test.

Is the switch OK?

YES -

Go to step 7.

NO -

Replace the audio remote, HFL-navigation voice control switch Overhaul.

7. Remove the center console panel Center Console Panel Removal / Installation.

8. Disconnect the HandsFreeLink control unit 32P connector.

9. Disconnect audio-navigation unit connector B (24P).

10. Check for continuity between HandsFreeLink control unit 32P connector terminals No. 13 and No. 29 and audio-navigation unit connector B (24P) terminals No. 5 and No. 16 respectively.





Is there continuity?

YES -

Go to step 11.

NO -

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

11. Check for continuity between body ground and audio-navigation unit connector B (24P) terminals No. 5 and No. 16 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 12.

12. Check for continuity between the terminals of audio-navigation unit connector B (24P) 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 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/indication is still present, replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.