Toyota 4Runner: System Diagram

Toyota 4Runner Service Manual / Vehicle Exterior / Window / Glass / Window Defogger System / System Diagram

SYSTEM DIAGRAM

Communication Table

Transmitter	Receiver	Signal	Line
Heater control assembly	Air conditioning amplifier assembly	Defogger switch signal	LIN
Multiplex network door ECU (Back door P/W)	Main body ECU (Multiplex network body ECU)	Back door window position signal	LIN
Back door power window regulator motor	Multiplex network door ECU (Back door P/W)	Back door window position signal	LIN
Main body ECU (Multiplex network body ECU)	Air conditioning amplifier assembly	Back door window position signal	CAN

System Description

SYSTEM DESCRIPTION 1. WINDOW DEFOGGER SYSTEM DESCRIPTION The thin heater wires of the defogger system are attached to the rear window and defog the rear window surface quickly. The system only ope ...

How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT HINT: Inspect the window defogger system after confirming that the back door power window system of the power window control system is operating normally. ...

Other materials about Toyota 4Runner:

Reassembly
REASSEMBLY CAUTION / NOTICE / HINT HINT: Use the same procedure for both the RH and LH sides. The procedure listed below is for the LH side. PROCEDURE 1. INSTALL NO. 3 OUTSIDE MOULDING RETAINER 2. INSTALL REAR DOOR OUTSIDE MOULDING L ...

Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of ...