Voice Guidance Cannot Be Heard, Is Broken Up, or There Is Static

Navigation System Symptom Troubleshooting - Voice guidance cannot be heard, is broken up, or there is static

Voice guidance cannot be heard, is broken up, or there is static

NOTE:

- Check the vehicle battery condition first Battery Test.
- The navigation system uses the center speaker for voice response.
- Check the navigation volume level (see the Navigation Manual).
- Before troubleshooting, make sure you have the anti-theft code.
- After troubleshooting, enter the anti-theft code.
- Check the connectors for poor connections or loose terminals.

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

2. Press the INFO/PHONE button.

3. Check the volume and voice feedback setting for the navigation system in SETUP screen.

Is either set to OFF?

YES -

Set the voice feedback to ON, and select an audible level for the volume.

NO -

Go to step 4.

4. Check the audio system operation.

Can you hear the audio system?

YES -

Go to step 9.

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. Connect the HDS to the DLC.

7. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

8. Check for DTCs with the HDS.

Are there any DTCs indicated?

YES -

Troubleshoot the indicated DTC(s).

NO -

Troubleshoot the audio system.

9. Check for the hard error code.

Are there any navigation DTCs indicated?

YES -

Troubleshoot the indicated navigation DTC(s).

NO -

Go to step 10.

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

11. Disconnect audio-navigation unit connector D (20P) and stereo amplifier connector B (28P).

12. Check for continuity between body ground and audio-navigation unit connector D (20P) terminals No. 17 and No. 19 individually.





Is there continuity?

YES -

There is a short to body ground in the wire(s) between the audio-navigation unit and the stereo amplifier. Replace the affected shielded harness.

NO -

Go to step 13.

13. Check for continuity between the terminals of audio-navigation unit connector D (20P) according to the table.









Is there continuity between any of the terminals?

YES -

There is a short in the wires between the audio-navigation unit and the stereo amplifier. Replace the affected shielded harness.

NO -

Go to step 14.

14. Check for continuity between audio-navigation unit connector D (20P) terminals No. 17 and No. 19 and stereo amplifier connector B (28P) terminals No. 9 and No. 21 respectively.





Is there continuity?

YES -

Go to step 15.

NO -

There is an open in the wire between the audio-navigation unit and the stereo amplifier. Replace the affected shielded harness.

15. Substitute a known-good stereo amplifier Service and Repair, and recheck.

Is the system OK?

YES -

Replace the original stereo amplifier Service and Repair.

NO -

Replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.