No Sound is Heard From Speakers (Display Is Normal)

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

NOTE:
- Check the vehicle battery condition first.
- Set the fader and balance positions to the center.
- Before performing symptom troubleshooting, do the power switch will not turn ON troubleshooting.
- 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 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 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 one?

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, 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; does it still appear?

YES - Go to step 9.

NO - Operation is normal.

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

Is there about 4 ohms?

YES - Go to step 10.

NO - Faulty speaker(s).

10. Disconnect stereo amplifier connectors A (26P), B (14P) and C (23P).

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

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






Is there battery voltage?

YES - Go to step 12.

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

12. Turn the ignition switch to ON (II).
13. Measure the voltage between stereo amplifier connector C (23P) No. 19 terminal and body ground.






Is there battery voltage?

YES - Go to step 14.

NO - Repair open in the wire between the stereo amplifier connector C (23P) No. 19 terminal and audio unit connector A (20P) No. 1 terminal.

14. Reconnect stereo amplifier connectors A (20P), B (14P), and C (23P).
15. Check for continuity between stereo amplifier connector B (14P) No. 3 terminal and body ground.






Is there continuity?

YES - Go to step 16.

NO - Repair open in the wire between stereo amplifier connector B (14P) No. 3 terminal and body ground (G652).

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






Is there more than 4 ohms?

YES - Go to step 18.

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

18. Disconnect the speaker 2P connector.
19. Check for continuity between the stereo amplifier connector B (14P) and C (23P) terminals and body ground according to the table.






Is there continuity?

YES - Go to step 20.

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

20. Reconnect the 2P connector(s) to the speaker(s).
21. 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.

22. Disconnect amplifier connector A (26P).
23. 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 the audio unit connector A (20P) No. 14 terminal (the harness shield).






Is there continuity?

YES - Repair short in the wire between the audio unit and the stereo amplifier or a short between the shield wires (replace the appropriate shielded harness).

NO - Go to step 24.

24. 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 the audio unit connector B (32P) No. 19 terminal (the harness shield).






Is there continuity?

YES - Repair short in the wire between the audio unit and the stereo amplifier or a short between the shield wires (replace the appropriate shielded harness).

NO - Go to step 25.

25. 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 the audio unit connector B (32P) No. 3 terminal (the harness shield).






Is there continuity?

YES - Repair short in the wire between the audio unit and the stereo amplifier or a short between the shield wires (replace the appropriate shielded harness).

NO - Go to step 26.

26. 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 and recheck. If the symptom/indication goes away, replace the original audio unit. If symptom is still present, substitute a known-good stereo amplifier and recheck. If the symptom/indication goes away, replace the original stereo amplifier.

NO - Repair open in the appropriate wire between the audio unit and stereo amplifier.