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Home >> Toyota >> 2020 >> Mirai >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Navigation System - Diagnostic Codes & Symptom Tests (1 Of 2) >> Navigation System >> Sound Quality is Bad Only when CD is Played (Volume is Too Low) [01/2018 - ] >> Procedure

Sound Quality is Bad Only when CD is Played (Volume is Too Low) [01/2018 - ]: Procedure

  1. REPLACE CD AND RECHECK 
    1. Replace the CD with a new or known good one and check that the malfunction disappears.

      OK

      Malfunction disappears.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END 

    Result: 

    NG 

    See step  2

  2. CHECK NOISE CONDITION 
    1. Check that noise is output from the speakers when a disc is inserted and is being read.

      OK

      Noise is output.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to  REMOVAL [06/2015 - ] 

    Result: 

    NG 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [01/2018 - 11/2018]  , or refer to  REMOVAL [11/2018 - ]