Inspection Procedure

WARNING: This page is about a different car, the 2007 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.

CHECK MAP DISC
1. Check that the map disc is not deformed or cracked.
  
  Fig 1: Checking CD For Deformed Or Cracked
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  OK:
  
  No deformations or cracks on map disc.
NG: REPLACE MAP DISC

OK: Go to next step
CHECK MAP DISC
1. Check for dirt on the map disc surface.
  
  Fig 2: Cleaning CD Surface
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  OK:
  
  No dirt is on the map disc surface.
  
  HINT:
  
  If the disc is dirty, clean the disc by wiping the disc's surface radially with a soft cloth.
  
  NOTE: Do not use conventional record cleaner or anti-static preservative.
NG: CLEAN MAP DISC

OK: Go to next step
CHECK MICROPHONE (NAVIGATION CHECK MODE)
1. Enter the Navigation Check mode's Microphone Check (see NAVIGATION CHECK MODE ).
  
  Fig 3: Display Navigation Check Mode Microphone Check Screen
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Follow the directions on the screen. Check that the word recognition indicator is displayed in green in each item.
  OK:
  
  All check items are recognized.
NG: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

OK: REPLACE NAVIGATION ECU