Toyota Lexus Is250, Is220D. Gse20 Ale20NAVIGATION NAVIGATION SYSTEM PRECAUTION PARTS LOCATION SYSTEM DIAGRAM SYSTEM DESCRIPTION HOW TO PROCEED WITH TROUBLESHOOTING SYSTEM NORMAL CONDITION CHECK DISPLAY CHECK MODE BLUETOOTH TEL CHECK MODE NAVIGATION CHECK MODE DIAGNOSIS DISPLAY DETAILED DESCRIPTION PROBLEM SYMPTOMS TABLE TERMINALS OF ECU DTC CHECK / CLEAR DIAGNOSTIC TROUBLE CODE CHART 01-21 45-7E 01-22 45-7F 01-D5 57-47 01-D8 58-10 01-D9 80-10 01-DA 58-11 01-DB 80-11 01-DE 58-40 01-D6 58-41 01-D7 80-40 01-DC 80-41 01-DD 58-42 01-E1 80-42 01-DF 58-43 01-E0 80-43 01-E3 58-44 01-E4 80-44 01-E2 58-45 21-10 80-45 21-11 60-10 23-10 60-11 23-11 60-42 24-10 60-43 24-11 60-44 25-10 60-50 25-11 63-10 34-10 63-11 34-11 63-12 34-12 63-41 45-10 63-42 45-11 63-43 45-12 63-44 45-41 63-48 45-42 63-50 45-43 63-45 45-44 63-51 45-48 63-52 45-50 63-46 45-45 63-47 45-51 63-78 45-52 63-7D 45-46 63-7E 45-47 63-7F 45-78 74-40 45-7D Pressing Power Switch does not Turn on System No Image Appears on Multi-display Illumination for Panel Switch does not Come on with Tail Switch ON Display does not Dim when Light Control Switch is Turned ON Panel Switches do not Function Touch Panel Switch does not Function Screen Flicker or Color Distortion MAP Disc cannot be Inserted MAP Disc cannot be Ejected Vehicle Position Mark Deviates Greatly Cursor or MAP Rotates when Vehicle Stopped Vehicle Position Mark is not Updated Current Position Display does not Appear GPS Mark is not Displayed Voice Guidance does not Function MAP Display Incomplete Route cannot be Calculated Voice Recognition Difficulty Voice is not Recognized Cellular Phone Registration Failure, Phone Directory Transfer Failure Cellular Phone cannot Send / Receive Cannot Call in a Certain Place The Other Caller's Voice cannot be Heard, is too Quiet, or Distorted The Other Caller cannot Hear Your Voice, or Your Voice is too Quiet or Distorted RDS-TMC does not Function Vehicle Speed Signal Circuit between Navigation ECU and Multi-Display Steering Pad Switch Circuit Illumination Circuit Parking Brake Switch Circuit AVC-LAN Circuit Vehicle Speed Signal Circuit between Multi-display and Combination Meter Reverse Signal Circuit Navigation Voice Speaker Circuit Display Signal Circuit between Navigation ECU and Television Camera ECU Display Signal Circuit between Navigation ECU and Multi-display Display Signal Circuit between Television Camera ECU and Multi-display Display Signal Circuit between Multi-display and Radio Receiver Microphone Circuit between Overhead J/B and Multi-display Microphone Circuit between Multi-display and Navigation ECU RDS-TMC Signal Circuit between Radio Receiver and Navigation ECU Gateway ECU Communication Error Radio Receiver Communication Error Stereo Component Amplifier Communication Error Multi-display Communication Error Navigation ECU Communication Error Television Camera ECU Communication Error Multi-display Power Source Circuit Navigation ECU Power Source Circuit MULTI-DISPLAY COMPONENTS REMOVAL INSTALLATION NAVIGATION ECU COMPONENTS REMOVAL INSTALLATION NAVIGATION ANTENNA COMPONENTS REMOVAL INSTALLATION