Voice guidance cannot be heard, is broken up, or there is too much static
Voice guidance cannot be heard, is broken up, or there is too much staticDiagnostic Test: Navi System Link
NOTE:
- The navigation system uses the center speaker to communicate the voice prompts. When the center speaker is inoperative, there is little difference in the audio system sound quality or volume, but the navigation system is mute.
- Always check the connectors for poor connections or loose terminals.
- Before troubleshooting, write down the audio presets, and get the audio and navigation system anti-theft codes.
- After troubleshooting, enter the audio and navigation system anti-theft codes, and the audio presets.
1. Press the display unit SET-UP button.
2. Check the volume and voice feedback setting for the navigation system in set-up.
Are the volume and/or voice feedback setting set to OFF?
YES - Set the feedback to ON and select an audible volume level.
NO - Go to step 3.
3. Check the radio operation.
Can you hear the radio?
YES - Go to step 4.
NO - Troubleshoot the audio system.
4. Do the speaker test to check if the center speaker is operative.
Is the center speaker operative?
YES - Go to step 5.
NO - Do the audio system sound is weak or distorted, or no sound is heard from speaker.
NOTE: Another speaker or speaker wire in the audio system could have a problem resulting in no output from the center speaker.
5. Go into the Diagnostic mode and use the "Navi System Link" diagnostic to check the radio.
Is "Radio" icon red?
YES - Troubleshoot the audio system.
NO - Go to step 6.
6. Turn the ignition switch OFF.
7. Disconnect the navigation unit connector B (14P) and the audio unit connector A (20P).
8. Check for continuity between body ground and navigation unit connector B (14P) terminals No. 5, No. 12 individually.
Is there continuity?
YES - Short to body ground in the wire(s) between the navigation unit and audio unit. Replace the affected shielded harness.
NO - Go to step 9.
9. Check for continuity between navigation unit connector B (14P) terminal No. 11 and terminals No. 5 and No. 12 individually.
Is there continuity?
YES - Short in the wire(s) between the navigation unit and audio unit. Replace the affected shielded harness.
NO - Go to step 10.
10. Check for continuity between navigation unit connector B (14P) terminal No. 5 and the audio unit connector A (20P) terminal No. 13.
Is there continuity?
YES - Go to step 11.
NO - Open in the circuit between the navigation unit and audio unit. Check for poor connections or loose terminals at the audio and navigation units. If a poor connection or loose terminal is found, replace the affected shielded harness.
11. Check for continuity between navigation unit connector B (14P) terminal No. 12 and the audio unit connector A (20P) terminal No. 12.
Is there continuity?
YES - Go to step 12.
NO - There is an open in the circuit between the navigation unit and the audio unit. Check for poor connections or loose terminals at the audio and navigation units. If a poor connection or loose terminal is found, replace the affected shielded harness.
12. Substitute a known-good navigation unit, and recheck.
Is the system OK?
YES - Replace the navigation unit.
NO - Replace the audio unit.