Symptom Troubleshooting

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

HFL messages cannot be heard or are weak

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, CDs, 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 No Sound Is Heard From The Speaker(s) (Display Is Normal) (With Navigation).�

3. Check the navigation voice recognition system.

Does the voice recognition system work properly?

YES -

Go to step 4.

NO -

Refer to the navigation system troubleshooting.�

4. Check if the HFL messages are played.

Are the HFT messages played?

YES -

Go to step 5.

NO -

Go to step 7.

5. Turn on the audio system.

6. Check the audio system when HFL messages are played.

Dose the audio system mute when HFL messages are being played?

YES -

Operation is normal.�

NO -

Go to step 12.

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

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

9. Check for continuity between body ground and HandsFreeLink control unit 28P connector terminals No. 11 and No. 25 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 10.

10. Check for continuity between the terminals of the HandsFreeLink control unit 28P connector 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 -

Go to step 11.

11. Check for continuity between HandsFreeLink control unit 28P connector terminals No. 11 and No. 25 and audio-navigation unit connector B (24P) terminals No. 21 and No. 9 respectively.

Is there continuity?

YES -

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 (With Navigation).�

NO -

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

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

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

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

Is there continuity?

YES -

Repair a short to body ground in the wire between the HandsFreeLink control unit and the audio-navigation unit.�

NO -

Go to step 15.

15. Check for continuity between HandsFreeLink control unit 28P connector terminal No. 3 and audio-navigation unit connector B (24P) terminal No. 8.