Section 255 (LEXUS Navigation System - Diagnosis)
WARNING: This page is about a different car, the 2004 Lexus GX 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
- Location
- Terminals Of Ecu
- Problem Symptoms Table
- Power Source Circuit (Multi-Display (TFT Display))
- Power Source Circuit (Navigation Ecu)
- Power Source Circuit (Gateway Ecu)
- Dimmer Signal Circuit (Multi-Display (TFT Display))
- Display Signal Circuit (To Multi-Display (TFT Display))
- Front Speaker (Driver Side) Only Is Not Heard
- 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)
- 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 Arbitrarily (Map Rotates Arbitrarily)
- Driving Directions Opposite To Moving Direction Of Vehicle Position Mark
- MICROPHONE CIRCUIT (OVERHEAD Junction Block - NAVIGATION ECU)
- A Navigation System Cannot Be Operated With Steering Pad Switch
- DVD Image Signal Circuit
- Parking Brake Switch Circuit
- AVC-LAN Circuit (W/O RSA, RSE, Back Monitor System)
- AVC-LAN Circuit (W/ RSA System)
- AVC-LAN Circuit (W/ RSE System)