No Sound is Heard From Speakers (Display Is Normal)

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

NOTE:
- 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. Check that the volume button is not set to the min level.

Is it at MIN level?

YES - Raise the volume level, and recheck the function.

NO - Go to step 2.

2. Check the NAVIGATION and HANDSFREELINK MUTE MODES.

Are the NAVIGATION and HANDSFREELINK MUTE MODES set?

YES - Cancel the NAVIGATION MUTE MODE by pressing the voice command and HANDSFREELINK back button, and recheck the function.

NO - Go to step 3.

3. Check to see if there is a specific speaker that has no sound.

Is there a specific one?

YES - Go to step 4.

NO - Go to step 7.

4. Turn the ignition switch OFF.
5. Check the speaker that has no sound for any damage.

Is there any damage?

YES - Replace the speaker and recheck.

NO - Go to step 6.

6. Remove the speaker(s) that has no sound, and disconnect its connector.
7. 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 8.

NO - Operation is normal.

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

Is there about 4 ohms?

YES - Go to step 9.

NO - Faulty speaker(s).

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




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 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) terminal No. 4.

11. Turn the ignition switch ON (II).




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

Is there battery voltage?

YES - Go to step 13.

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

13. Reconnect the stereo amplifier connectors A (20P), B (14P), and C (23P).




14. Check for continuity between stereo amplifier connector B (14P) terminal No. 3 and body ground.

Is there continuity?

YES - Go to step 15.

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

15. Disconnect stereo amplifier connectors B (14P), and C (23P).




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

Is there more than 4 ohms.?

YES - Go to step 17.

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

17. Disconnect the speaker 2P connector.




18. 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 19.

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

19. Reconnect the 2P connector(s) to the speaker(s).
20. Disconnect audio unit connector A (20P) and audio unit connector B (32P).
21. Disconnect amplifier connector A (26P).




22. 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 23.




23. 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 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. 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 25.




25. 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.