CD cannot be Inserted / Played or CD is Ejected Right After Insertion: Procedure

CHECK IF A PROPER CD IS INSERTED
1. Make sure that the CD is a normal audio CD, and that it is not deformed, flawed, stained, burred or otherwise defective.
  OK
  
  Normal audio CD.
  
  HINT:
  - Translucent or uniquely-shaped CDs cannot be played.
  - CDs for personal computers (with music recorded in) and CD-Rs cannot be played.
  - Use an adapter to play 8 cm (3.2 in.) CDs.
NG → CD IS FAULTY

OK: Go to next step
CHECK THAT CD IS INSERTED PROPERLY
1. Check whether or not the CD is inserted upside down.
  OK
  
  CD is properly inserted.
NG → SET CD PROPERLY

OK: Go to next step
CLEAN CD
1. Clean the disc by wiping the CD's underside radially with a soft cloth.
  
  Fig 1: Cleaning CD
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  OK
  
  Malfunction disappears.
  
  NOTE:
  Do not use a conventional record cleaner or anti-static preservative.
OK → CD WAS DIRTY

NG: Go to next step
REPLACE CD WITH ANOTHER AND RECHECK
1. Replace the CD with a normal one and check if the same problem occurs again.
  OK
  
  Malfunction disappears.
NG → REPLACE RADIO RECEIVER ASSEMBLY

OK → CD IS FAULTY