Inspection Procedure

1. Check if the person on the other end of the phone can hear your voice properly.

   OK: 

   Your voice can be heard correctly. 

NG: REPLACE CELLULAR PHONE 

OK: Go to next step 

1. Check if the mute switch is ON.

   OK: 

   MUTE switch is not ON. 

NG: TURN MUTE SWITCH OFF 

OK: Go to next step 

1. Enter the Navigation Check mode's Vehicle Sensors (see NAVIGATION CHECK MODE  ).
   Fig 1: Display Navigation Check Mode Microphone Check Screen

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. While driving, compare the "SPD" indicator to the reading on the speedometer. Check if these readings are almost equal.

   OK: 

   The readings are almost equal. 

NG: GO TO " VOICE IS NOT RECOGNIZED  " 

OK: REPLACE MULTI-DISPLAY