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Home >> Lexus >> 2009 >> SC 430 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Navigation (Diagnostics & Symptom Tests) >> Navigation System >> Voice Guidance does not Function >> Procedure

Voice Guidance does not Function: Procedure

  1. CHECK NAVIGATION SYSTEM SETTING 
    1. Enter the menu screen by pressing the "MENU" switch.
      Fig 1: Checking Volume (1 Of 2)
      GTY143528Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Select "Volume".
    3. Check that "OFF" is not selected.
      Fig 2: Checking Volume (2 Of 2)
      GTY121884Courtesy 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 

  2. CHECK NAVIGATION SETTING 
    1. Enter the menu screen by pressing the "MENU" switch.
      Fig 3: Checking Auto Voice Guidance Settings (1 Of 2)
      GTY156195Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Select "Setup".
    3. Check that "Auto Voice Guidance" is not off.
      Fig 4: Checking Auto Voice Guidance Settings (2 Of 2)
      GTY156214Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK

      Auto voice guidance is not off.

    4. Check that "Voice Guidance in All Modes" is on.

      OK

      Voice guidance in all modes is on.

    NG → TURN AUTO VOICE GUIDANCE "ON" 

    OK: Go to next step 

  3. CHECK MAP DISC 
    1. Check that the map disc is not deformed or cracked.
      Fig 5: Checking Map Disc for Cracking Or Deformation
      GTY156184Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK

      No deformations or cracks on map disc.

    NG → REPLACE MAP DISC 

    OK: Go to next step 

  4. 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