Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CELLULAR PHONE
1. Check if the voice on the other side can be heard using a cellular phone
  OK: Voice can be heard.
NG: REPAIR OR REPLACE CELLULAR PHONE

OK: Go to Next Step
CHECK NAVIGATION SYSTEM
1. Check that voice guidance can be heard from the driver side speaker
  OK: Voice guidance can be heard.
NG: GO TO "VOICE GUIDANCE DOES NOT FUNCTION" IN PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )

OK: Go to Next Step
CHECK SETTINGS
1. Check if the volume level is set to low on the CALL screen
  OK: The level is not set low.
NG: SET VOLUME TO HIGH

OK: Go to Next Step
CHECK SETTINGS
1. Enter the "Handsfree Voice Quality Set" mode (See OPERATION CHECK ).
2. Check if the Receive Voice Level is set to "0"
  HINT
  
  The Receive Voice Level can be set to 11 different levels, -5 to +5, with a 3 dB difference
3. Check if the Receive Voice Level is set to the minimum or maximum level
  HINT.
  
  When the Receive Voice Level is set to the minimum or maximum level, the sound may be distorted
  
  OK: The Receive Voice Level is set to "0".
  
  Fig 2: Diagnosis Display Screen - Handsfree Voice Quality Set
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: SET RECEIVE VOICE LEVEL TO "0"

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )