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 NAVIGATION SYSTEM SETTING
1. Enter the menu screen by pressing the "MENU" switch.
2. Select "Volume".
  
  Fig 1: Diagnostic Tool Display - Volume
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Check that "OFF" is not selected.
  
  Fig 2: Diagnostic Tool Display - OFF
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  OK:
  
  OFF is not selected.
NG: TURN VOICE GUIDANCE VOLUME UP TO 4 USING VOICE ADJUSTMENT SWITCHES

OK: Go to next step
CHECK NAVIGATION SETTING
1. Enter the menu screen by pressing the "MENU" switch.
2. Select "Setup".
  
  Fig 3: Diagnostic Tool Display - SET UP
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Check that "Auto Voice Guidance" is not off.
  OK:
  
  Auto voice guidance is not off.
4. Check that "Voice Guidance in All Modes" is on.
  
  Fig 4: Diagnostic Tool Display - Voice Guidance In All Modes
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  OK:
  
  Voice guidance in all modes is on.
NG: TURN AUTO VOICE GUIDANCE "ON"

OK: Go to next step
CHECK MAP DISC
1. Check that the map disc is not deformed or cracked.
  
  Fig 5: 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 RADIO RECEIVER ASSEMBLY
1. Check that audio sound can be heard from the driver side speaker.
  OK:
  
  Audio sound can be heard.
NG: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

OK: REPLACE NAVIGATION ECU