No Sound Is Heard From the Speaker(s) (Display Is Normal)

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

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

NOTE:

- Check the vehicle battery condition first. Testing and Inspection

- Check the connectors for poor connections or loose terminals.

- Set the fader and balance positions to the center.

- Before doing symptom 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 check that the volume button is not set 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 functions.

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

NO - Go to step 4.

4. Check to see if there is a specific speaker(s) that has no sound.

Is there a specific speaker without sound?
YES - Go to step 5.

NO - Go to step 8.

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

6. Check the speaker(s) that has no sound for any damage.

Is there any damage?
YES - Replace the speaker(s), and recheck.

NO - Go to step 7.

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

8. 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 9.

NO - Intermittent failure. Operation is normal.

9. Measure the resistance between the terminals No. 1 and No. 2 of the speaker connector.

Is there speaker(s) OK?
YES - Go to step 10.

NO - Replace the speaker(s), and recheck.

10. Measure the voltage between stereo amplifier connector B (14P) terminal No. 4 and body ground.

Is there battery voltage?
YES - Go to step 11.

NO - Repair an open in the wire between the No. 2 (30 A) fuse in the passenger's under-dash fuse/relay box and stereo amplifier connector B (14P) terminal No. 4.

11. Measure the voltage between stereo amplifier connector C (23P) terminal No. 19 and body ground.

Is there battery voltage?
YES - Go to step 12.

NO - Repair an open in the wire between stereo amplifier connector C (23P) terminal No. 19 and audio unit connector A (20P) terminal No. 1. If the wire and pin fits are OK, substitute a known-good audio unit, Audio Unit Removal/Installation and recheck. If the symptom/indication goes away, replace the original audio unit. Audio Unit Removal/Installation

12. Measure the voltage between stereo amplifier connector B (14P) terminal No. 3 and body ground.

Is there less than 0.2 V?
YES - Go to step 13.

NO - Repair an open in the wire between stereo amplifier connector B (14P) terminal No 3 and body ground (G652). Right Side Wire Harness (Rear Branch) Connector And Harness Locations

13. Disconnect stereo amplifier connector B (14P) and C (23P).

14. Measure the resistance of stereo amplifier connectors B (14P) and C (23P) according to the table.

Is there resistance OK?
YES - Go to step 15.

NO - Repair an open in the wire between the stereo amplifier and the speakers.

15. Disconnect the speaker 2P connector.

16. Check for continuity between stereo amplifier connector B (14P) and C (23P) terminals and body ground according to the table.

Is there continuity?
YES - Go to step 17.

NO - Repair a short in the wire between the stereo amplifier and the appropriate speakers.

17. Reconnect the 2P connector(s) to the speaker(s).

18. Disconnect audio unit connector A (20P) and audio unit connector B (32P).
NOTE: Eject all the CDs before removing the audio unit and CD changer to prevent damaging the CD player's load mechanism.

19. Disconnect stereo amplifier connector A (26P).

20. Check for continuity between audio unit connector A (20P) and body ground according to the table. Then check for continuity between the same terminals listed in the table and audio unit connector A (20P) terminal No. 14 (the harness shield).

Is there continuity?
YES - There is a short in the wire between the audio unit and the stereo amplifier or a short between the shield wires. Replace the affected shielded harness.

NO - Go to step 21.

21. Check for continuity between audio unit connector B (32P) and body ground according to the table. Then check for continuity between the same terminals listed in the table and audio unit connector B (32P) terminal No. 19 (the harness shield).

22. Check for continuity between audio unit connector B (32P) and body ground according to the table. Then check for continuity between the same terminals listed in the table and audio unit connector B (32P) terminal No. 3 (the harness shield).

Is there continuity?
YES - There is a short in the wire(s) between the audio unit and the stereo amplifier or a short between the shield wires. Replace the affected shielded harness.

NO - Go to step 23.

23. Check for continuity between audio unit connectors A (20P) and B (32P) and stereo amplifier connector A (26P) according to the table.

Is there continuity?
YES - Substitute a known-good audio unit, Audio Unit Removal/Installation and recheck. If the symptom/indication goes away, replace the original audio unit. Audio Unit Removal/Installation If symptom is still present, substitute a known-good stereo amplifier, Service and Repair and recheck. If the symptom/indication goes away, replace the original stereo amplifier. Service and Repair

NO - Repair an open in the wire(s) between the audio unit and the stereo amplifier.