Toyota Tundra Service Manual: System Description

SYSTEM DESCRIPTION

1. GENERAL

(a) By operating the seat heater switch, which is located in the air conditioning control assembly, the temperature is controlled to 3 settings.

  • LOWEST: 32.5°C (90.5°F)
  • MID: 44.5°C (112.1°F)
  • HIGH: 58.25°C (136.85°F)

(b) Whether the seat heater is on or off can be determined by checking if the indication is located in air conditioning control assembly.

(c) The seat heaters of both seats are controlled by the seat heater switches, which are located on the air conditioning control assembly.

    Problem Symptoms Table

    System Diagram

    See More:

    Toyota Tundra Service Manual > Air Conditioning System(for Manual Air Conditioning System): Air Inlet Damper Control Servo Motor Circuit (B1442/42)
    DESCRIPTION The air inlet damper servo motor sends pulse signals to inform the air conditioning amplifier of the damper position. The air conditioning amplifier activates the motor (normal, reverse) based on the signals to move the air inlet damper to any position, which controls the intake air sett ...

    Toyota Tundra Owners Manual

    Toyota Tundra Service Manual

    © 2026 Copyright www.ttundra.com
    0.0096