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 system)
NOTE:
- Check the vehicle battery condition first. Testing and Inspection
- Check the connectors for poor connections or loose terminals.
- Set the fader and the 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. Turn the ignition switch to LOCK (0).
4. Disconnect the HandsFreeLink control unit 28P connector.
5. 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 6.
6. 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 7.
NO - Go to Poor AM or FM radio reception or interference troubleshooting. Symptom Troubleshooting
7. Do the speaker check mode with the self-diagnostic function How to Troubleshoot the Audio System.
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 8.
8. Turn the ignition switch to LOCK (0).
9. Check the No. 15 (20 A) fuse in the passenger's under-dash fuse/relay box, the No. 15 (10 A) fuse in the under-hood fuse/relay box, and the No. 18 (7.5 A) fuse in the driver's under-dash fuse/relay box.
Are the fuses OK?
YES - Go to step 10.
NO - Replace the fuse(s), and recheck.
10. Check the faulty speaker(s) for damage.
Is there any damage?
YES - Replace the speaker, and recheck.
NO - Go to step 11.
11. Remove the speaker(s) with no sound, Speaker Test/Replacement and disconnect its connector.
12. 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 13.
NO - Intermittent failure. Operation is normal.
13. Test the speaker(s) Speaker Test/Replacement.
Is the speaker OK?
YES - Go to step 14.
NO - Replace the speaker(s).
14. Reconnect the speaker connector(s).
15. Disconnect stereo amplifier connector A (18P).
16. Check for continuity between body ground and stereo amplifier connector A (18P) according to the table.
Is there continuity?
YES - Repair a short to body ground in the wire(s) between the stereo amplifier and the speaker(s).
NO - Go to step 17.
17. Check for continuity between each pair of speaker wires at stereo amplifier connector A (18P) according to the table.
Is the resistance OK?
YES - Go to step 18.
NO - Repair an open or short in the wire between the stereo amplifier and the speaker(s).
18. Disconnect audio unit connector A (24P), stereo amplifier connector B (24P), and audio unit connector D (8P).
NOTE: Eject all the discs before disconnecting the audio unit and the audio disc changer to prevent damaging the CD player's load mechanism.
19. Check for continuity between stereo amplifier connector B (28P) and body ground according to the table.
Is there continuity?
YES - Repair a short to body ground in the wire(s) between the audio unit and the stereo amplifier.
NO - Go to step 20.
20. Check for continuity between audio unit connector A (24P), connector D (8P), and stereo amplifier connector B (28P) according to the table.
Is there continuity?
YES - Go to step 21.
NO - There is an open in the wire(s) between the audio unit and the stereo amplifier. Repair or replace the affected harness.
21. Measure the voltage between stereo amplifier connector A (18P) terminal No. 18 and body ground.
Is there battery voltage?
YES - Go to step 22.
NO - Repair an open in the wire between the No. 15 (20 A) fuse in the passenger's under-dash fuse/relay box and stereo amplifier connector B (18P) terminal No. 18.
22. Reconnect audio unit connector A (24P).
23. Turn the ignition switch to ON (II).
24. Measure the voltage between stereo amplifier connector B (24P) terminal No. 24 and body ground.
Is there battery voltage?
YES - Go to step 25.
NO - Repair an open in the wire between stereo amplifier connector B (24P) terminal No. 13 and audio unit connector C (24P) terminal No. 5. If the wire and pin fits are OK, substitute a known-good audio unit Audio Unit Removal/Installation (With Premium Audio System) and recheck. If the symptom/indication goes away, replace the original audio unit.
25. Turn the ignition switch to LOCK (0).
26. Reconnect stereo amplifier connector A (18P) and connector B (28P).
27. Turn the ignition switch to ON (II).
28. Measure the voltage between body ground and stereo amplifier connector A (18P) terminal No. 9 and connector B (24P) terminal No. 1 individually.
Is there less than 0.2 V?
YES - Substitute a known-good audio unit, Audio Unit Removal/Installation (With Premium Audio System) and recheck. If the symptom/indication goes away, replace the original audio unit. If the symptoms still present, substitute a known-good stereo amplifier, Service and Repair and recheck. If the symptom/indication goes away, replace the original stereo amplifier.
NO - Repair an open or high resistance in the wire between the stereo amplifier connector A (18P) terminal No 9 or connector B (24P) terminal No. 1 and body ground (G651) or (G401).
