Audio System Symptom Troubleshooting - No sound is heard from speakers (display is normal) (1DIN 1CD type)

No sound is heard from speakers (display is normal) (1DIN 1CD type)


NOTE:

1.Check that the volume button is not set to min level.

Is it at MIN level?


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


NO - Go to 2.


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

Is there a specific one?


YES - Go to 3.


NO - Go to 6.


3.Turn the ignition switch OFF.

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

Is there any damage?


YES - Substitute the speaker and recheck.n


NO - Go to 5.


5.Remove the speaker(s) with no sound, and disconnect its connector.

6.Check the speaker 2P connector for a loose or poor connection.

Reconnect the speaker 2P connector and recheck the symptom; does it still fail?


YES - Go to 7.


NO - Operation is normal.n


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

Is there about 4 W?


YES - Go to 8.


NO - Faulty speaker(s).n


8.Remove the audio unit. Disconnect audio unit connector A (20P).

9.Check the resistance between following terminals of audio unit connector A (20P) according to the table.

Speaker Terminal Wire color 
Left front door speaker A8 (+) LT GBN 
A18 (-) PNK 
Right front door speaker A7 (+) GRY 
A17 (-) BRN 
Left rear speaker A6 (+) YEL 
A16 (-) BRN 
Right rear speaker A5 (+) BLU 
A15 (-) ORN 

Is there about 4 W?


YES - Go to 10.


NO - Repair short in the wires between the audio unit and speaker.n


10.Disconnect the speaker 2P connector.

11.Check audio unit connector A (20P) terminals No. 5, 6, 7, 8, 15, 16, 17 and 18 individually for continuity to body ground.

 

Is there continuity?


YES - Repair short to body ground in the wire between the audio unit and speaker.n


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