Poor radio reception
Read the instructions below then 
start the fault diagnostic procedure.
Symptom: Poor radio reception.
The cassette player and CD player work normally.
 
  
 
 
  
  
  
   Fault symptoms
  
  
   Poor radio reception.
   
   
  
  
   The cassette player and CD player work normally.
   
   
   
    Probable cause of fault
   
  
  
   
   
  
  
  
   
    
     
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       The main unit is not properly inserted in the radio compartment.
        
        
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       The antenna cable is poorly connected into the radio compartment/main unit.
        
        
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       Poor coaxial cable connection.
        
        
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       The antenna amplifier's power supply (trigger voltage) or ground connection is faulty.
        
        
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       Break in glass antenna (rear window) 4D, or rear side window 5D.
        
        
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       Bad connection between the antenna amplifier and glass antenna.
        
        
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   Diagnostic help
  
  
   Note that the glass-mounted mobile phone antenna on the rear window can cause a deterioration in radio reception.
   
   
   
    Checking the wiring harness
   
  
  
   Jiggle the wiring harness at several points and in different directions to check if there are intermittent breaks and short-circuits in the leads. Observe the multimeter, test lamp or diagnostic instrument during the test.