No Sound Is Heard From the Speaker(s) (Display Is Normal) (With Premium Audio System)

Symptom Troubleshooting: No sound is heard from the speaker(s) (display is normal)

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

NOTE:

- Check the vehicle battery condition first.

- Check the connectors for poor connections or loose terminals.

- Set the fader and balance positions to the center.

- Before doing the troubleshooting, do the Audio unit power switch will not turn on 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 unit, and make sure 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 3.


3. On the steering wheel, check the navigation talk command, and/or the HandsFreeLink talk command function.

Are the navigation talk command and/or the HFL talk command function set?
YES - Cancel the navigation talk command by pressing the navigation BACK button, and/or HFL talk command, press the HFL BACK button, then recheck the function.

NO - Go to step 4.


4. Do the speaker check mode with the self-diagnostic function Initial Inspection and Diagnostic Overview.

Do all speakers produce a tone?
YES - System is OK at this time. Check for poor connections at the audio unit, speakers and stereo amplifier.

NO - Go to step 5.


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

6. Check the speaker(s) with on sound for any damage.

Is there any damage?
YES - Replace the speaker Speaker Test/Replacement and recheck.

NO - Go to step 7.


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

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

Reconnect the speaker connector, and recheck the symptom; is the condition still present?
YES - Go to step 9.

NO - Intermittent failure. Operation is normal.


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

Is the speaker OK?
YES - Go to step 10.

NO - Replace the speaker(s).


10. Disconnect stereo amplifier connector B (18P) and the speaker connector.

11. Check for continuity between body ground and stereo amplifier connector B (18P) according to the table. Then check for continuity between both pairs of speaker wires (+) and (-) at the door speaker network control unit connector (8P).









Is there continuity?
YES - Repair short in the wire(s) between the stereo amplifier and the door speaker network control unit or speaker(s) or short between the (+) and (-) speaker wires.

NO - Go to step 12.










12. Connect the speaker connector terminal (+) and (-) with a jumper wire.

13. Check for continuity between stereo amplifier connector B (18P) according to the table.





Is there continuity?
YES - Go to step 14.

NO - Repair open in the wire between the stereo amplifier and the speaker or door speaker network control unit.






14. Disconnect the jumper wire.

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

Is there battery voltage?
YES - Go to step 16.

NO - Repair open in the wire between No. 15 (20 A) fuse in the passenger's under-dash fuse/relay box and stereo amplifier connector B (18P) terminal No. 18.






16. Disconnect stereo amplifier connector A (24P).

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

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

Is there battery voltage?
YES - Go to step 19.

NO - Repair open in the wire between stereo amplifier connector A (24P) terminal No. 24 and audio unit connector A (24P) terminal No. 17.






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

20. Reconnect stereo amplifier connector A (24P).

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

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

Is there less than 0.1 V?
YES - Go to step 23.

NO - Repair short to body ground in the wire between stereo amplifier connector A (24P) terminal No 1, connector B (18P) terminal No. 9 and body ground (G401, G402).










23. Disconnect audio unit connector A (24P), stereo amplifier connector A (24P), and audio unit connector D (8P).
NOTE: Eject all the CDs before disconnecting the audio unit and CD changer to prevent damaging the CD player's load mechanism.

24. Check for continuity between audio unit connector A (24P), connector D (8P) and stereo amplifier connector A (24P) according to the table.





Is there continuity?
YES - Go to step 25.

NO - Repair open in the applicable wire(s) between the audio unit and stereo amplifier (replace the affected shielded harness).






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





Is there continuity?
YES - Repair short to body ground in the wire(s) between the audio unit and stereo amplifier (replace the affected shielded harness).

NO - Go to step 26.






26. Check for continuity between the terminals of stereo amplifier connector A (24P) according to the table.





Is there continuity between any of the terminals?
YES - Repair short in the wire(s) between the audio unit and stereo amplifier (replace the affected shielded harness).

NO - Substitute a known-good audio unit with navigation, Audio Unit Removal/Installation (With Navigation) without navigation, Audio Unit Removal/Installation (Without Navigation) and recheck. If the symptom/indication goes away, replace the original audio unit with navigation, Audio Unit Removal/Installation (With Navigation) without navigation. Audio Unit Removal/Installation (Without Navigation) If the symptom is still present, substitute a known-good stereo amplifier, and recheck. If the symptom/indication goes away, replace the original stereo amplifier. Service and Repair