Toyota Tundra Service Manual: System Description

Toyota Tundra Service Manual / Vehicle Interior / Window / Glass / Window Defogger System / System Description

SYSTEM DESCRIPTION

1. GENERAL

The defogger system's thin heater wires are attached to the rear window and defog the rear 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
Air conditioning control assembly (rear window defogger switch)	Located on air conditioning control assembly , detects rear window defogger switch operation and transmits signals to air conditioning amplifier through LIN communication line
Defogger relay	Receives rear window defogger activation request signals from air conditioning amplifier and supplies power to rear window defogger
Back window glass (defogger wire)	Receives power from defogger relay and heats back window glass (defogger wire)

3. DESCRIPTION

Function

Outline

Rear window defogger

Defogger relay receives rear window defogger activation request signals from air conditioning amplifier and defogs rear window surface

Receives power from defogger relay and heats back window glass (defogger wire)

Rear Window Defogger System does not Operate

System Diagram

See More:

Toyota Tundra Service Manual > Ignition System: On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. PERFORM SPARK TEST (a) Check for DTCs (See page ). NOTICE: If any DTC is present, perform troubleshooting procedures for that DTC. (b) Check if sparks occur. (1) Remove the ignition coils and spark plugs (See page ). (2) Install the spark plug to the ignition coil ...

Toyota Tundra Service Manual: System Description

Rear Window Defogger System does not Operate

System Diagram

See More:

Toyota Tundra Owners Manual

Toyota Tundra Service Manual