DTC B15B9: DVD-ROM Deck Malfunction: Procedure

CHECK FOR DTC
1. Clear the DTCs. Refer to DTC CHECK / CLEAR .
2. Check for DTCs and check if the same trouble occurs again.
  OK
  
  No DTCs are output.
NG → See step 3

OK → See step 2
USE SIMULATION METHOD TO CHECK. Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE
REPLACE NAVIGATION MODULE BOARD. Refer to REMOVAL