Symptom Troubleshooting

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.

- Check the connectors for poor connections or loose terminals.

- Set the fader and balance positions to the center.

- Before doing symptom troubleshooting, check for power switch will not turn on troubleshooting. [1][2]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 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. Check the MUTE mode.

Is the MUTE mode set?
YES - Cancel the MUTE mode by pressing the mute button, and recheck the function.

NO - Go to step 4.


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

Is there a specific speaker?
YES - Go to step 7.

NO - Go to step 5.


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

6. Remove the audio unit. Service and Repair Check that the audio unit connector is properly connected.
NOTE: Eject the disc before removing the audio unit to prevent damaging the CD player's load mechanism.

Is it connected properly?
YES - Go to step 11.

NO - Reconnect the connector, and recheck the function.


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

8. Check the speaker with no sound for any damage.

Is there any damage?
YES - Substitute the speaker Door Speaker Replacement and recheck.

NO - Go to step 9.


9. Remove the speaker(s) with no sound, Door speaker, Door Speaker Replacement Rear speaker, Rear Speaker Replacement Tweeter, Tweeter Replacement and disconnect its connector.

10. Check the speaker connector for a loose or poor connection.

Reconnect the speaker connector and recheck the symptom; does it still fail?
YES - Go to step 11.

NO - Operation is normal.


11. Disconnect the speaker connector.

12. Remove the audio unit, Service and Repair and disconnect the audio unit 20P connector.
NOTE: Eject the disc before removing the audio unit to prevent damaging the CD player's load mechanism.

13. Check for continuity between both pairs of speaker wires (+) and (-) at audio unit 20P connector. Then check each wire for continuity to body ground according to the table.





Is there continuity?
YES - Repair short in the wire(s) between the audio unit and the speaker(s).

NO - Go to step 14.






14. Connect each of the speaker connector terminals (+) and (-) with a jumper wire.

15. Check for continuity between both pairs of speaker wires (+) and (-) at the audio unit 20P connector according to the table.





Is there continuity?
YES - Go to step 16.

NO - Repair open in the wire(s) between the audio unit and the speaker(s).






16. Substitute a known-good speaker(s), Door Speaker Replacement and recheck the symptom.

Does the symptom goes away?
YES - Replace the faulty speaker(s).

NO - Substitute a known-good audio unit, Service and Repair and recheck. If the symptom/indication goes away, replace the original audio unit.