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No Sound Is Heard From the Speaker(s) (Display Is Normal) (With Premium Audio System) (Without Navigation System)




Audio System Symptom Troubleshooting - No sound is heard from the speaker(s) (display is normal) (with premium audio system)

No sound is heard from the speaker(s) (display is normal) (with premium audio)

NOTE:

- Check the vehicle battery condition first Battery Test.
- Check the connectors for poor connections or loose terminals.
- Do the individual speaker test Speaker Test/Replacement.
- Set the fader and balance positions to the center.
- Before doing symptom troubleshooting, do the Audio unit power switch will not turn on (No information display and no sound) troubleshooting Audio Unit Power Switch Will Not Turn On (No Information Display and No Sound).

1. Turn the ignition switch to ON (II).

2. Turn on the audio system, and make sure the volume button is not set to the MIN level.

3. Check for sound in each mode (AM/FM, CD, XM, and USB).

Is there sound in all modes, and is the sound normal?

YES -

Intermittent failure. The system is OK at this time. Check for loose connections at the audio unit and speaker(s).

NO -

- If there is no sound in all modes, go to step 4.
- If there is no sound in AM/FM mode, do the AM or FM radio reception interference troubleshooting Symptom Troubleshooting.
- If there is no sound in CD mode, do the Audio disc does not play troubleshooting Symptom Troubleshooting.
- If there is no sound in the XM radio, do the poor or no sound with XM radio troubleshooting Poor or No Sound With XM Radio (Audio Unit Does Display XM Channels).
- If there is no sound in the USB mode, do the USB input sound is low or cannot be heard troubleshooting USB Input Sound Is Low or Cannot Be Heard.

4. Turn the ignition switch to LOCK (0).

5. Disconnect the HandsFreeLink control unit 28P connector.

6. Turn the ignition switch to ON (II), and recheck the audio system for sound.

Did the sound return?

YES -

Replace the HandsFreeLink control unit Service and Repair.

NO -

Go to step 7.

7. See if the problem recurs with the tuner and more than one CD.

Does the problem recur using the tuner as well as CDs?

YES -

Go to step 8.

NO -

Go to poor AM or FM radio reception or interference troubleshooting Symptom Troubleshooting.

8. Do the Speaker Check Mode with the Self-Diagnostic Function.

Did all speakers produce a tone?

YES -

Substitute a known-good audio unit Audio Unit Removal/Installation (Without Navigation System), and recheck. If the symptom/indication goes away, replace the original audio unit Audio Unit Removal/Installation (Without Navigation System).

NO -

Go to step 9.

9. Turn the ignition switch to LOCK (0).

10. Check the No. 31 (20 A) fuse in the under-dash fuse/relay box.

Is the fuse OK?

YES -

Go to step 11.

NO -

Replace the fuse(s), and recheck.

11. Measure the voltage between stereo amplifier connector A (18P) terminal No. 18 and body ground.





Is there battery voltage?

YES -

Go to step 12.

NO -

Repair an open in the wire between the No. 31(20 A) fuse in the under-dash fuse/relay box and stereo amplifier connector A (18P) terminal No. 18.

12. Turn the ignition switch to ON (II).

13. Measure the voltage between stereo amplifier connector B (24P) terminal No. 24 and body ground.





Is there battery voltage?

YES -

Go to step 14.

NO -

Repair an open in the wire between stereo amplifier connector B (24P) terminal No. 24 and audio unit connector D (32P) terminal No. 23. If the wire and pin fits are OK, substitute a known-good audio unit Audio Unit Removal/Installation (Without Navigation System), and recheck. If the symptom/indication goes away, replace the original audio unit Audio Unit Removal/Installation (Without Navigation System).

14. Measure the voltage between body ground and stereo amplifier connector A (18P) terminal No. 9, and between body ground and connector B (24P) terminal No. 1 individually.









Is there less than 0.2 V?

YES -

Go to step 15.

NO -

Repair an open to the body ground in the wire(s) between stereo amplifier connector A (18P) terminal No. 9, connector B (24P) terminal No. 1 and body ground (G503) or (G504).

15. Turn the ignition switch to LOCK (0).

16. Disconnect stereo amplifier connector A (18P) .

17. Check the speaker(s) with no sound for any damage.

Is there any damage?

YES -

Replace the speaker Speaker Test/Replacement, and recheck.

NO -

Go to step 19.

18. Remove the speaker(s) with no sound Speaker Test/Replacement, and disconnect its connector.

19. Check the speaker 2P connector for a loose or poor connection.

Reconnect the speaker 2P connector, and recheck the symptom; is the condition still present?

YES -

Go to step 20.

NO -

Intermittent failure. Operation is normal.

20. Test the speaker(s) Speaker Test/Replacement.

Is the speaker OK?

YES -

Go to step 10.

NO -

Replace the speaker(s) Speaker Test/Replacement.

21. Check for continuity between body ground and stereo amplifier connector A (18P) according to the table.









Is there continuity?

YES -

Repair a short in the wire(s) between the stereo amplifier and the speaker(s).

NO -

Go to step 22.

22. Measure the resistance between each pair of speaker wires at stereo amplifier connector A (18P) according to the table.









Is the resistance OK?

YES -

Go to step 23.

NO -

Repair an open or a short in the wire(s) between the stereo amplifier and the speaker(s).

23. Disconnect audio unit connector D (32P) and stereo amplifier connector B (24P).

NOTE: Eject all CDs before disconnecting the audio unit and CD changer to prevent damaging the CD player's load mechanism.

24. Check for continuity between body ground and stereo amplifier connector B (24P) according to the table.









Is there continuity?

YES -

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

NO -

Go to step 25.

25. Check for continuity between audio unit connector D (32P) and stereo amplifier connector B (24P) according to the table.









Is there continuity?

YES -

Go to step 26.

NO -

There is an open in the wire(s) between the audio unit and the stereo amplifier. Replace the affected shielded harness.

26. Check for continuity between the terminals of stereo amplifier connector B (24P) 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 -

Substitute a known-good stereo amplifier Stereo Amplifier Removal / Installation (Without Navigation System), and recheck. If the symptom goes away, replace the original stereo amplifier Stereo Amplifier Removal / Installation (Without Navigation System). If the symptom/indication does not go away, replace the audio unit Audio Unit Removal/Installation (Without Navigation System).

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