Toyota 4Runner manuals

Toyota 4Runner: System Description

SYSTEM DESCRIPTION

1. WINDSHIELD DEICER SYSTEM DESCRIPTION

The windshield deicer system thin heater wires are attached to the inside of the front window and deice the window surface quickly. The indicator light illuminates while the system is operating. The system automatically turns off after approximately 15 minutes.

2. FUNCTION OF MAIN COMPONENT

Component

Outline

Engine room relay block, junction block (DEICER relay)

Receives front deicer activation request signals from the air conditioning amplifier assembly and supplies power to the front window deicer.

Outer mirror heater switch assembly (windshield deicer switch)

Sends signals to the air conditioning amplifier assembly to operate the deicer.

Windshield glass (windshield deicer wire)

Receives power from the DEICER relay and heats the windshield glass (windshield deicer wire).

Operation Check
OPERATION CHECK 1. CHECK WINDSHIELD DEICER SYSTEM OPERATION (a) When the ignition switch is turned to ON and the outer mirror heater switch (windshield deicer switch) is pressed, check that the wi ...

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 lis ...

Other materials about Toyota 4Runner:

Removal
REMOVAL CAUTION / NOTICE / HINT CAUTION: Wear protective gloves. Sharp areas on the parts may injure your hands. PROCEDURE 1. REMOVE REAR SEAT HEADREST ASSEMBLY (a) Remove the headrest. 2. REMOVE REAR SEAT TRACK INNER BRACKET COVER (a) Using a mouldi ...

Diagnosis Circuit
DESCRIPTION DTC output mode is set by connecting terminals TC and CG of the DLC3. DTCs are output by the blinking of the SRS warning light. HINT: When each warning light continues blinking, a ground short in the wiring of terminal TC of the DLC ...

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