Section 329 (LEXUS Navigation System - Diagnosis)
WARNING: This page is about a different car, the 2003 Lexus LX 470. 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 Chart
- Parts Location
- Terminals Of Ecu
- Problem Symptoms Table
- Circuit Inspection
- Black Screen (Nothing Displayed)
- No Sound With POWER Switch Pressed ("Audio OFF" On Audio Screen)
- No Navigation Screen Displayed When "MAP", "Menu", Or "DEST" Switch Pressed (Screen Cannot Be Switched)
- No Corresponding Screen Displayed When "Audio" Or "Information" Switch Pressed
- No Navigation Displayed, "Audio OFF" On Audio Screen And No Audio Sound
- Screen Cannot Be Dimmed In Night Time
- Navigation Screen Is Not Stabilized (Synchronous Error)
- Color On Navigation Screen Is Unusual (RGB Signal Error)
- Black Screen Appears When "MAP", "Menu" or "DESTINATION" Switch Pressed
- Sound Of Radio, Cassette Tape Or CD Only Cannot Be Heard From Speaker
- No Sound Radio, Cassette Tape, DVD) Can Be Heard From Driver Side Door Speaker Only
- Map DISC Cannot Be Inserted
- MAP Screen Display Does Not Appear (Disc Caution Screen Does Not Change
- Map Is Displayed In White Or Blue Screen (Switches And Vehicle Position Mark Is Displayed
- Touch Switch Does Not Function (Navigation Screen Only)
- Touch Switch Does Not Function (A/C Control Screen Only)
- Panel Switch Does Not Function (Navigation Screen Only)
- Panel Switch Does Not Function (A/C Control Only)
- Navigation Screen Cannot Changed To The Night Mode Color
- Vehicle Position Is Badly Deviated From Correct Point
- GPS Mark Does Not Appear
- No Voice Navigation
- Vehicle Position Rotates Without Control (Map Rotates Without Control)
- Driving Direction Is Opposite To Moving Direction Of Vehicle Position Mark
- Navigation System Cannot Be Operated With Voice Recognition
- Any Speaker Does Not Work (DVD Sound Only)
- DVD Magazine Connot Be Inserted
- DVD Magazine Inserted, But No Power
- Power Comes In, But DVD Auto Changer Does Not Operate
- Sound Jumps (DVD Sound Only)
- DVD Magazine Will Not Be Ejected
- AVC-LAN (Communication bus) Circuit
- Gateway ECU (AVC-LAN adapter) Circuit