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:
Relay(w/ Ptc Heater)
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. REMOVE PTC HEATER RELAY (PTC NO. 1, PTC NO. 1, PTC NO. 3)
(a) Remove the 3 PTC heater relays from the engine room relay block.
Text in Illustration
*1
...
Disabling the TRAC/VSC systems (2WD models)
If the vehicle gets stuck in fresh snow or mud, the TRAC/VSC systems may
reduce power from the engine to the wheels. You may need to turn the system off
to enable you to rock the vehicle in order to free it.
Turning off the TRAC system only (turning on th ...
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