Problem Symptoms Table

PROBLEM SYMPTOMS CHART

Symptom	Suspected Area	See Page
Rear window defogger does not operate (Indicator ON)	DEFOG H-fuse A/C (HTR) fuse GAUGE fuse DOME fuse ECU-B fuse DEF relay Rear window defogger wire Wire harness	LOCATION LOCATION LOCATION LOCATION LOCATION INSPECTION INSPECTION -
Rear window defogger does not operate (Indicator OFF)	DEFOG H-fuse A/C (HTR) fuse GAUGE fuse DOME fuse ECU-B fuse DEF relay Combination meter Steering wheel pad switch Multi-display assy Rear window defogger wire Wire harness	LOCATION LOCATION LOCATION LOCATION LOCATION INSPECTION PROBLEM SYMPTOMS TABLE INSPECTION PROBLEM SYMPTOMS TABLE INSPECTION -
Mirror heater does not operate (Indicator ON)	M/HTR fuse A/C (HTR) fuse GAUGE fuse DOME fuse ECU-B fuse Mirror heater relay Outer rear view mirror assy Wire harness	LOCATION LOCATION LOCATION LOCATION LOCATION INSPECTION INSPECTION -
Mirror heater does not operate (Indicator OFF)	M/HTR fuse A/C (HTR) fuse GAUGE fuse DOME fuse ECU-B fuse Mirror heater relay Combination meter Steering wheel pad switch Multi-display assy Outer rear view mirror assy Wire harness	LOCATION LOCATION LOCATION LOCATION LOCATION INSPECTION PROBLEM SYMPTOMS TABLE INSPECTION PROBLEM SYMPTOMS TABLE INSPECTION -

HINT:

The window defogger system is part of the large-scale multiplex communication system. This system features shared communication wiring that reduces the wiring complexity of the communication lines. The first step in any repair is to confirm the proper operation of the communication system. Proceed with trouble-shooting after the communication has been verified (see MULTI DISPLAY ASSEMBLY ).