No Sound Is Heard From Speaker(s) (Display Is Normal) (08-10 Models With Premium Audio System)
Audio System Symptom Troubleshooting - No sound is heard from speaker(s) (display is normal) ('08-10 models with premium audio system)
No sound is heard from the speaker(s) (display is normal) ('08-10 models with premium audio system)
NOTE:
- Check the vehicle battery condition first Testing and Inspection.
- Set the fader and balance positions to the center.
- Check the connectors for poor connections or loose terminals.
1. Turn the ignition switch to ON (II).
2. Check for sound in each mode (AM, FM, XM, and CD).
Is the sound OK in each mode?
YES -
Intermittent failure. The system is OK at this time. Check for loose connectors at the audio unit and amplifier.�
NO -
Go to step 3.
3. Check that the volume button is not set to the MIN level.
Is it at the MIN level?
YES -
Raise the volume level, and recheck the function.�
NO -
Go to step 4.
4. On the steering wheel, check the navigation talk command.
Is the navigation talk command function set?
YES -
Cancel the navigation talk command by pressing the navigation BACK button, then recheck the function.�
NO -
Go to step 5.
5. On the steering wheel, check the HFL command.
Is the HFL talk command function set?
YES -
Cancel the HFL talk command by pressing the HFL BACK button, then recheck the function.�
NO -
Go to step 6.
6. Check to see if there is a specific speaker that has no sound.
Do any or all of the speakers fail to sound?
YES -
Go to step 7.
NO -
Speakers all work, but sound quality is poor in step 1.
- If sound is poor only with XM radio, or the XM radio does not function, go to poor or no sound with XM radio Poor or No Sound With XM Radio (Audio Unit Does Display XM Channels).�
- If the sound is poor only with AM or FM, go to poor AM or FM radio reception or interference Poor AM Or FM Radio Reception Or Interference.�
- If the sound is poor only with CD.�
- Try several known-good CD in the audio unit.
- If the sound quality is normal, the original CD is faulty.
- If the sound quality is still poor, replace the audio unit.
- If the sound is poor in all modes, go to sound quality diagnosis Audio System Sound Quality Diagnosis.�
7. Turn the ignition switch to LOCK (0).
8. Check the speaker with no sound for any damage.
Is there any damage?
YES -
Substitute the speaker Speaker Test/Replacement, and recheck.�
NO -
Go to step 22.
9. Check the speaker connector for a loose or poor connection.
Reconnect the speaker connector, and recheck the symptom; is the condition still present?
YES -
Go to step 10.
NO -
Intermittent failure. Operation is normal.�
10. Test the speaker(s) Speaker Test/Replacement.
Is the speaker(s) OK?
YES -
Go to step 11.
NO -
Replace the speaker(s) Speaker Test/Replacement.�
11. Reconnect the speaker connector(s).
12. Disconnect stereo amplifier connector A (20P).
13. Check for continuity between body ground and stereo amplifier connector A (20P) according to the table.
Is there continuity?
YES -
Repair a short to body ground in the wires between the stereo amplifier and the speaker(s).�
NO -
Go to step 14.
14. Measure the resistance between each pair of speaker terminals at stereo amplifier connector A (20P) according to the table.
Is the resistance OK?
YES -
Go to step 15.
NO -
Repair an open or a short in the wire between the stereo amplifier and the speaker.�
15. Disconnect stereo amplifier connect B (14P).
16. Disconnect audio unit connector A (17P).
NOTE: Eject all the CDs before removing the audio unit and audio disc changer to prevent damaging the CD player's load mechanism.
17. Check for continuity between stereo amplifier connector B (14P) and body ground according to the table.
Is there continuity?
YES -
There is a short to body ground in the wire(s) between the stereo amplifier and the audio unit. Replace the affected shielded harness.�
NO -
Go to step 18.
18. Check for continuity between stereo amplifier connector B (14P) terminals according to the table.
Is there continuity between any of the terminals?
YES -
There is a short in the wire(s) between the audio unit and the stereo amplifier. Replace the affected shielded harness.�
NO -
Go to step 19.
19. Check for continuity between stereo amplifier connector B (14P) and audio unit connector A (17P) according to the table.
Is there continuity?
YES -
Go to step 20.
NO -
There is an open in the wire(s) between the stereo amplifier and the audio unit. Replace the affected shielded harness.�
20. Reconnect audio unit connector A (17P).
21. Reconnect stereo amplifier connector A (20P) and B (14P).
22. Turn the ignition switch to ON (II).
23. Measure the voltage between body ground and audio unit connector A (17P) terminals No. 14 and No. 17 individually.
Is there battery voltage?
YES -
Go to step 24.
NO -
Repair an open in the wire(s) between the No. 5 (10 A) fuse and No. 32 (10 A) in the driver's under-dash fuse/relay box and the audio unit.�
24. Measure the voltage between audio unit connector A (17P) terminal No. 9 and body ground.
Is there less than 0.2 V?
YES -
Go to step 25.
NO -
Repair an open or high resistance in the wire between audio unit connector A (17P) and body ground (G503).�
25. Measure the voltage between stereo amplifier connector A (20P) terminal No. 10 and body ground.
Is there battery voltage?
YES -
Go to step 26.
NO -
Repair an open in the wire between No. 5 (20 A) fuse in the auxiliary under-hood fuse box and the stereo amplifier connector A (20P).�
26. Measure the voltage between stereo amplifier connector A (20P) terminal No. 9 and body ground.
Is there battery voltage?
YES -
Go to step 27.
NO -
Repair an open in the wire between audio unit connector F (20P) and stereo amplifier connector A (20P).�
27. Measure the voltage between stereo amplifier connector B (14P) terminal No. 7 and body ground.
Is there battery voltage?
YES -
Go to step 28.
NO -
Repair an open in the wire between the stereo amplifier connector B (14P) and the audio unit connector F (20P).�
28. Measure the voltage between stereo amplifier connector A (20P) terminal No. 20 and connector B (14P) terminal No. 14 and body ground.
Is there less than 0.2 V?
YES -
Substitute a known-good stereo amplifier Service and Repair, and recheck. If the symptom/indication goes away, replace the original stereo amplifier. If the symptom is still present, substitute a known-good audio unit Audio Unit Removal/Installation, and recheck. If the symptom/indication goes away, replace the original audio unit.�
NO -
Repair an open or high resistance in the wire between the stereo amplifier connector A (20P) or connector B (14P) and body ground (G504).�