Section 778 (LEXUS Navigation System - Diagnosis)

WARNING: This page is about a different car, the 2004 Lexus IS 300. 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
Parts Location
Terminals Of Ecu
Problem Symptoms Table
Circuit Inspection
- AVC-LAN (Communication Bus Circuit)