Audio Driving Instructions Cannot Be Heard
Symptom TroubleshootingAudio driving instructions cannot be heard
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. Push the display unit MENU key, and select "setup".
2. Check the audio driving instructions volume setting.
Is sit set to OFF?
YES - Set the volume to an audible level.
NO - Go to step 3.
3. Turn the ignition switch OFF.
4. Disconnect the navigation unit connector B (16P) and the audio unit connector A (20P).
5. Check for continuity between body ground and navigation unit connector B (16P) terminals No. 3, No. 9 and No. 10 individually.
Is there continuity?
YES - If terminal No. 3 has continuity to ground, repair the short to body ground in the MUTE wire. If terminal No. 9 or No. 10 have continuity to ground, replace the affected shielded harness.
NO - Go to step 6.
6. Check for continuity between navigation unit connector B (16P) terminal No. 9 and the audio unit connector A (20P) terminal No. 13.
Is there continuity?
YES - Go to step 7.
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.
7. Check for continuity between navigation unit connector B (16P) terminal No. 3 and the audio unit connector A (20P) terminal No. 14.
Is there continuity?
YES - Go to step 8.
NO - Repair open in the wire between the navigation unit and the audio unit.
8. Check for continuity between navigation unit connector B (16P) terminal No. 10 and the audio unit connector A (20P) terminal No. 11.
Is there continuity?
YES - Go to step 9.
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.
9. Disconnect the navigation unit connector A (12P).
10. Check for continuity between body ground and navigation unit connector A (12P) terminal No. 8.
Is there continuity?
YES - Repair short to body ground in the wire between the navigation unit and the audio unit.
NO - Go to step 11.
11. Check for continuity between navigation unit connector A (12P) terminal No. 8 and the audio unit connector A (20P) terminal No. 1.
Is there continuity?
YES - Go to step 12.
NO - Repair open in the wire between the navigation unit and the audio unit.
12. Substitute a known-good audio unit, and recheck.
Is there system OK?
YES - Replace the audio unit.
NO - Replace the navigation unit.