Voice Guidance Cannot Be Heard
Voice guidance cannot be heardDiagnostic Test: Navi System Link
NOTE:
- Always check the connectors for poor connections or loose terminals
- Before troubleshooting, write down the customer's radio station presets, and get the radio and navigation system anti-theft codes
- After troubleshooting, enter the radio and navigation system anti-theft codes, and the radio station presets
1. Press the display unit SET-UP button.
2. Check the volume setting for the navigation system
Is it set to OFF?
YES - Set the volume to an audible 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. 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 5
5. Turn the ignition switch OFF
6. Disconnect the navigation unit connector B (14P) and the audio unit connector A (20P).
7. Check for continuity between body ground and navigation unit connector B (14P) terminals No.5, No.12 individually.
Is there continuity?
YES - Repair short to ground in the harness between the navigation and audio units Replace the affected shielded harness.
NO - Go to step 8.
8. Check for continuity between navigation unit connector B (14P) terminal No.11 and terminals No.5 and No.12 individually.
Is there continuity?
YES - Repair short to ground in the harness between the navigation and audio units Replace the affected shielded harness.
NO - Go to step 9.
9. 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 10.
NO - There is an 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.
10. 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 11.
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.
11. Substitute a known good audio unit, and recheck.
Is the system OK?
YES - Replace the audio unit.
NO - Replace the navigation unit.