No Sound Is Heard From Speakers (Display Is Normal) (With Premium Audio System)
No Sound Is Heard From Speakers (Display Is Normal) (With Premium Audio System)NOTE:
- Set the fader and balance positions to the center.
- Before performing symptom troubleshooting, do the power switch will not turn ON troubleshooting.
- Check the vehicle battery condition first.
- Always check the connectors for poor connections or loose terminals.
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. Do the speaker check mode with the self-diagnostic function.
Did all speakers produce a tone?
YES - Go to step 4.
NO - System is OK at this time. Check for poor connections at the audio unit, speakers and stereo amplifier.
4. Turn the ignition switch to LOCK (0).
5. Check the faulty speaker(s) for damage.
Is there any damage?
YES - Replace the speaker and recheck.
NO - Go to step 6.
6. Remove the faulty speaker(s), and disconnect its connector.
7. 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 8.
NO - Intermittent failure. Operation is normal.
8. Test the speaker(s).
Is the speaker OK?
YES - Go to step 9.
NO - Replace the speaker(s).
9. Disconnect stereo amplifier connector A (18P) and the speaker connector.
10. Check for continuity between body ground and stereo amplifier connector A (18P) according to the table. Then check for continuity between both pairs of speaker wires (+) and (-) at stereo amplifier connector A (18P) according to the table.
Is there continuity?
YES - Repair short in the wire(s) between the stereo amplifier and the speaker(s) or short between the (+) and (-) speaker wires.
NO - Go to step 11.
11. Connect the speaker connector terminal (+) and (-) with a jumper wire.
12. Check for continuity between stereo amplifier connector A (18P) according to the table.
Is there continuity?
YES - Go to step 13.
NO - Repair open in the wire between the stereo amplifier and the speaker.
13. Disconnect the jumper wire.
14. Measure the voltage between stereo amplifier connector Ad 8P) No. 18 terminal and body ground.
Is there battery voltage?
YES - Go to step 15.
NO - Repair open in the wire between No. 31 (20 A) fuse in the under-dash fuse/relay box and stereo amplifier connector A (18P) No. 18 terminal.
15. Disconnect stereo amplifier connector B (24P).
16. Turn the ignition switch to ON (II).
17. Measure the voltage between stereo amplifier connector B (24P) No. 24 terminal and body ground.
Is there battery voltage?
YES - Go to step 18.
NO - Repair open in the wire between stereo amplifier connector B (24P) No. 24 terminal and audio unit connector D (32P) No. 23 terminal.
18. Turn the ignition switch to LOCK (0).
19. Check for continuity between stereo amplifier connector A (18P) No. 9 terminal, connector B (24P) No. 1 terminal and body ground.
Is there continuity?
YES - Go to step 19.
NO - Repair open to the body ground in the wire(s) between stereo amplifier connector A (18P) No. 9 terminal, connector B (24P) No. 1 terminal and body ground (G503, G504).
20. Disconnect audio unit connector D (32P).
NOTE: Eject all the CDs before disconnecting the audio unit and CD changer to prevent damaging the CD player's load mechanism.
21. 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 21.
NO - Repair open in the wire(s) between the audio unit and stereo amplifier.
22. Check for continuity between stereo amplifier connector B (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.
NO - Go to step 22.
23. 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 - Repair short in the wire(s) between the audio unit and stereo amplifier (replace the appropriate shielded harness).
NO - Substitute a known-good audio unit and recheck. If the symptom/indication goes away, replace the original audio unit. 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.