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 ...

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Inspection INSPECTION PROCEDURE 1. INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY (a) Inspect the 1-way clutch. (1) Install SST to the inner race of the 1-way clutch. SST: 09350-32014 09351-32020 (2) Press on the serrations of the starter with a finger a ...

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