PROCEDURE
(a) Set treble, middle and bass to the initial values and check that the sound is normal. OK: Malfunction disappears. HINT: Sound quality adjustment measures vary according to the type of amplifier.
(a) Compare with another vehicle of the same model which does not have trouble to see if there is any difference in the sound quality. OK: No difference is found.
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Toyota Tundra Service Manual > Navigation System: Disc cannot be Inserted or is Ejected Right After Insertion
PROCEDURE 1. CHECK IF A PROPER DISC IS INSERTED (a) Make sure that the disc is an audio disc or a disc with an MP3, WMA or AAC file, and that it is not deformed, flawed, stained, deteriorated or otherwise defective. OK: Disc is normal. HINT: Translucent or uniquely-shaped CDs cannot be played. CDs w ...