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

Symptom Troubleshooting: The HFL messages cannot be heard or are weak

The HFL messages cannot be heard or are weak (with navigation)

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. Check for DTCs.

Are there any DTCs?
YES - Repair the indicated DTCs.

NO - Go to step 4.


4. Press the TALK button.

Does the audio system mute when HFL messages are being played?
YES - Go to step 5.

NO - Go to step 10.


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

6. Disconnect audio-navigation unit connector B (24P) and the HandsFreeLink control unit 28P connector.

7. Check for continuity between HandsFreeLink control unit 28P connector terminals No. 11 and No. 25 and audio-navigation unit connector B (24P) terminals No. 5 and No. 16 individually.

Is there continuity?
YES - Go to step 8.

NO - There is an open in the wire(s) between the HandsFreeLink control unit and the audio-navigation unit. Replace the affected shielded harness.






8. 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 9.






9. Check for continuity between the terminals of audio-navigation unit connector B (24P) according to the table.





Is there continuity?
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 goes away, replace the original HandsFreeLink control unit. If the symptom does not go away, replace the audio-navigation unit. Audio-Navigation Unit Removal/Installation (With Navigation)






10. Press the PICK-UP button.

Does the audio-HVAC display (audio-navigation switch panel) show the HFL menu and the show HandsFreeLink when pressing the PICK-UP button?
YES - Go to step 11.

NO - Go to step 18.


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

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

13. Disconnect the HandsFreeLink control unit 28P connector, Service and Repair and the audio-navigation unit connector D (20P).

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

Is there continuity?
YES - Go to step 15.

NO - Repair open in the wire between the HandsFreeLink control unit and the audio-navigation unit.






15. Disconnect the HFL-navigation microphone 7P connector.

16. Check for continuity between HandsFreeLink control unit 28P connector terminal No. 3 and HFL-navigation microphone 7P connector terminal No.5.

Is there continuity?
YES - Go to step 17.

NO - Repair open in the wire HandsFreeLink control unit and HFL-navigation microphone.






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

Is there continuity?
YES - Repair short to body ground in the wire between the HandsFreeLink control unit and the audio-navigation unit.

NO - Substitute a known-good HandsFreeLink control unit, HFL Switch Test and recheck. If the symptom goes away, replace the original the HandsFreeLink control unit. If the symptom does not go away, replace the audio-navigation unit. Audio-Navigation Unit Removal/Installation (With Navigation)






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

19. Remove the audio remote, HFL-navigation voice control switch Steering Wheel Disassembly/Reassembly and disconnect 12P connector, then connect the cable reel 20P connector.

20. Disconnect the HandsFreeLink control unit 28P connector.

21. Check for continuity between HandsFreeLink control unit 28P connector terminal No. 2 and audio remote, HFL-navigation voice control switch 12P connector terminal No. 9.

Is there continuity?
YES - Refer to the HFL switch test. HFL Switch Test

NO - Repair open in the wire between the HandsFreeLink control unit and the audio remote, HFL-navigation voice control switch.