Sound Quality is Bad Only when Disc is Played (Volume is Too Low) [12/2017 - 08/2019]: Procedure

1. Replace the disc with a known good one and check that the malfunction disappears.

   OK

   Malfunction disappears.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END 

Result: 

NG 

REPLACE RADIO RECEIVER ASSEMBLY. Refer to  REMOVAL [12/2017 - 03/2018]  , or refer to  REMOVAL [03/2018 - 08/2019]