Section 603 (Defogger System - Diagnosis)

WARNING: This page is about a different car, the 2002 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
Location
Terminals Of Ecu
Problem Symptoms Table
Rear Window Defogger Does Not Operate