Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus LS 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.
  OK: No deformations or cracks appear on the map disc.
  
  Fig 1: Identifying Map Disc
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPLACE THE MAP DISC

OK: Go to next step.
CHECK THE MAP DISC

Fig 2: Checking Map Disc
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Check for dirt on the map disc surface.
  OK: No dirt is on the map disc surface.
HINT:

If dirt is on the map disc surface, wipe it with a soft cloth from inside to outside in a radial direction.

NOTE: Do not use conventional record cleaner or anti-static preservative.

NG: CLEAN THE MAP DISC

OK: Go to next step.
NAVIGATION CHECK MODE (MICROPHONE CHECK)

Fig 3: Identifying Multi-Display - Microphone Check
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Enter the "Microphone Check" mode (see NAVIGATION CHECK MODE (MICROPHONE CHECK) )
2. Follow the directions on the screen. Check if 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 (SEE PROBLEM SYMPTOMS TABLE )

OK: REPLACE NAVIGATION ECU (SEE REPLACEMENT )