Toyota Tundra Service Manual: System Description

Toyota Tundra Service Manual / Vehicle Interior / Window / Glass / Windshield Deicer System / System Description

SYSTEM DESCRIPTION

1. GENERAL

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

The windshield deicer switch is built into the mirror heater switch.

2. FUNCTION OF MAIN COMPONENT

Component	Outline
Air conditioning control assembly (windshield deicer switch)	Located on air conditioning control assembly, detects windshield deicer switch operation and transmits signals to air conditioning amplifier through LIN communication line
Windshield deicer relay assembly	Receives windshield deicer activation request signals from air conditioning amplifier and supplies power to windshield deicer
Windshield glass (windshield deicer wire)	Receives power from windshield deicer relay assembly and heats windshield glass (windshield deicer wire)

3. DESCRIPTION

Function

Outline

Windshield surface deicer

Windshield deicer relay assembly receives windshield deicer activation request signals from air conditioning amplifier and supplies power to windshield deicer

Receives power from windshield deicer relay assembly and heats windshield glass (windshield deicer wire)

Problem Symptoms Table

System Diagram

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Toyota Tundra Service Manual > Occupant Classification System: Occupant Classification Sensor Power Supply Circuit Malfunction (B1793)
DESCRIPTION The occupant detection sensor power supply circuit consists of the occupant classification ECU and the occupant detection sensors. DTC B1793 is set when a malfunction is detected in the occupant detection sensor power supply circuit. DTC Code DTC Detection Condition Trouble Area B1793 On ...

Toyota Tundra Service Manual: System Description

Problem Symptoms Table

System Diagram

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