Navigation System Voice Guidance Does Not Function

Body Electrical. Lexus Gs430, Gs300. Uzs190 Grs190
Navigation. Lexus Gs430, Gs300. Uzs190 Grs190

INSPECTION PROCEDURE

CHECK NAVIGATION SYSTEM SETTING

CHECK NAVIGATION SETTING

CHECK MAP DISC

CHECK RADIO RECEIVER ASSEMBLY

NAVIGATION SYSTEM - Voice Guidance does not Function


INSPECTION PROCEDURE

1.CHECK NAVIGATION SYSTEM SETTING
Lexus Gs430, Gs300. Uzs190 Grs190.Navigation.Navigation System.Navigation System Voice Guidance Does Not Function
Lexus Gs430, Gs300. Uzs190 Grs190.Navigation.Navigation System.Navigation System Voice Guidance Does Not Function

  1. Enter the menu screen by pressing the "MENU" switch.

  1. Select "Volume".

  1. Check that "OFF" is not selected.

    OK:
    OFF is not selected.


NG
TURN VOICE GUIDANCE VOLUME UP TO 4 USING VOICE ADJUSTMENT SWITCHES
OK


2.CHECK NAVIGATION SETTING
Lexus Gs430, Gs300. Uzs190 Grs190.Navigation.Navigation System.Navigation System Voice Guidance Does Not Function
Lexus Gs430, Gs300. Uzs190 Grs190.Navigation.Navigation System.Navigation System Voice Guidance Does Not Function

  1. Check the "MENU" screen by pressing the "MENU" switch.

  1. Select "Setup".

  1. Check that "Auto Voice Guidance" is not OFF.

    OK:
    Auto voice guidance is not OFF.

  1. Check that "Voice Guidance in All Modes" is ON.

    OK:
    Voice guidance in all modes is ON.


NG
TURN AUTO VOICE GUIDANCE "ON"
OK


3.CHECK MAP DISC
Lexus Gs430, Gs300. Uzs190 Grs190.Navigation.Navigation System.Navigation System Voice Guidance Does Not Function

  1. Check that the map disc is not deformed or cracked.

    OK:
    No deformations or cracks on map disc.


NG
REPLACE MAP DISC
OK


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