Toyota Tundra Service Manual: 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 > Touch Select 2-4 And High-low System: Automatic Disconnecting Differential Motor Control Circuit High (P17A2)
    DESCRIPTION This DTC is detected when a short to B+ is detected in the A.D.D. shift motor drive circuit. DTC Code DTC Detection Condition Diagnosis Condition Malfunction Status Malfunction Time Other Trouble Area P17A2 Ignition switch ON (when not switching between 2WD and 4H) Short to B+ in the A.D ...

    Toyota Tundra Owners Manual

    Toyota Tundra Service Manual

    © 2024 Copyright www.ttundra.com
    0.0339