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TOYOTA 2007 

2007 

 

REAR SPEAKER UPGRADE 

Troubleshooting 
 
 
 Troubleshooting 
 
            Condition:                                                                         Check For: 

 

 

 

 

No sound from Rear Speakers, however 

factory speakers still play 

 

 

 

 

Distorted Sound 

 

 

 

Low Sound If Bass Tube installed. 

 

 

 

 

Rattling Noises 

 

 

 

 

 

1.  Ensure speaker plugs are connected, 
both at the plug into the vehicles harness 
and on the back of the speaker. 

 

 

 

 

  

1.  Check for short in wiring between plug 
and speaker. 

 

 

 

 

1.  Close the back hatch of the vehicle 

2.  Adjust the radio to a comfortable listening 
level, and then turn the “gain control” knob 
on the Bass Tube clockwise until the sound 
becomes audible.  Do not adjust the level too 
high, as this will result in distorted sound.   

 

Rattling will be evident in some panels at 
extreme volume conditions, but make sure 
you have performed the following to 
minimize noise: 

1.  Securely tightened Mounting Hardware so 
Speaker Assembly does not move. 

 

 
 
 
 
 

 

Page 4 of 5 pages 

Southeast Toyota Distributors LLC 

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