Component Tests and General Diagnostics

PERFORM BEFORE BEGINNING SYSTEM DIAGNOSIS
1. Check Circuit Breaker 15 by operating the Power Door Locks (if equipped).
2. Check Fuse 9 by observing the Malfunction Indicator Lamps lighting with the Ignition Switch in "RUN" and engine off.
3. If one or more of the grid lines do not heat, Refer to grid line repair procedures.
4. If the Panel Light is inoperable with the Headlight Switch in "PARK" or "HEAD," check bulb and wiring to bulb (see schematic).
^ Refer to Rear Defogger Control and Wiper and Washer System for Wiper/Washer Switch access.
^ Refer to System Diagnosis. System Diagnosis - Rear Window Defogger & Heated Mirrors (SSE & SSEI Models)