Section 298 (LEXUS Navigation System - Diagnosis)
WARNING: This page is about a different car, the 2004 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.
- How To Proceed With Troubleshooting
- Customer Problem Analysis Check
- Pre-Check
- Diagnostic Trouble Code Table
- Location
- Terminals Of Ecu
- Problem Symptoms Table
- Black Screen (Nothing Displayed)
- No Navigation Screen Displayed When "Map", "Menu" Or Destination" Switch Pressed (Screen Cannot Be Switched)
- Screen Cannot Be Dimmed In Night Time
- Navigation Screen Not Stabilized (SYNCRONOUS Error)
- Color On Navigation Screen Is Unusual (RGB Signal Error)
- Black Screen Appears When "Map", "Menu" Or "Destination" Switch Pressed
- Map Disc Cannot Be Inserted
- Map Screen Displayed Does Not Appear (Disc Caution Screen Does Not Change)
- Map Is Displayed In White Or Blue Screen (Switched And Vehicle Position Mark Are Displayed)
- Navigation Screen Cannot Change To Night Mode Color
- Touch Switch Does Not Function (Navigation Screen Only)
- Vehicle Position Is Deviated From Correct Point Badly
- GPS Mark Does Not Appear
- Vehicle Position Mark Rotates Without Control (Map Rotates Without Control)
- Driving Directions Opposite To Moving Direction Of Vehicle Position Mark
- Turning Light Control Switch "Tail" Does Not Light Up The Panel Switches
- Closed/Opened Door Of Multi-Display Does Not Open/Close
- Door Of Multi-Display Unexpectedly Stop During Open/Close Operation
- Cranking Closes Door Of Multi-Display Once And Opens It Again
- Display Does Not Tilt
- Panel Switches Do Not Function
- Sound Of All Audio Mode Is Not Heard From Driver Side Front Squawker And Front Tweeter (Navigation Voice Is Heard)
- Sound Quality Is Bad Only Driver Side Front Squawker And Front Tweeter In All Audio Mode (Navigation Voice Is Normal)
- Voice Guidance Or Audio Sound Is Not Heard From Front Squawker And Tweeter During Voice Guidance (Audio Mode Is Normal)
- No Voice Navigation/Audio Sound Does Not Mute When Voice Guidance Is Heard
- Sound Quality Is Bad Only Navigation Voice (Audio Sound Is Normal)
- Front Speaker (Front Squawker And Front Tweeter) Only Does Not Sound