Voice Guidance does not Function

SET VOLUME TO MAX IN MENU SCREEN
OK: NORMAL (VOICE NAVIGATION IS NOT AVAILABLE. NO DESTINATION IS SET, OR THE VEHICLE IS RUNNING OFF THE ROUTE.)

NG: Go To Next Step
CHECK SPEAKER CIRCUIT
1. Check the speaker circuit (see SPEAKER CIRCUIT ).
NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: Go To Next Step
CHECK SOUND
1. Check if the radio sound can be heard from the driver side door speaker.
OK: REPLACE NAVIGATION ECU

NG: REPLACE SPEAKER