DISASSEMBLY PROCEDURE 1. REMOVE LOWER DEFROSTER NOZZLE ASSEMBLY
2. REMOVE NO. 1 AIR DUCT SUB-ASSEMBLY
3. REMOVE AIR FILTER COVER PLATE
4. REMOVE CLEAN AIR FILTER
5. REMOVE NO. 3 AIR DUCT SUB-ASSEMBLY
6. REMOVE AIR CONDITIONING AMPLIFIER ASSEMBLY
7. REMOVE BLOWER WITH FAN MOTOR SUB-ASSEMBLY
8. REMOVE AIR DUCT
9. REMOVE NO. 1 DAMPER SERVO SUB-ASSEMBLY
(b) Remove the 4 screws and No. 1 damper servo sub-assembly. 10. REMOVE DAMPER SERVO SUB-ASSEMBLY (for Automatic Air Conditioning System)
(b) Remove the 3 screws and damper servo sub-assembly. 11. REMOVE BLOWER UPPER CASE SUB-ASSEMBLY
(b) Detach the 2 claws and remove the blower upper case sub-assembly. 12. REMOVE BLOWER DAMPER SERVO SUB-ASSEMBLY
(b) Remove the 3 screws and blower damper servo sub-assembly. 13. REMOVE COOLING UNIT DAMPER SERVO SUB-ASSEMBLY (for Automatic Air Conditioning System) ![]() (a) Disconnect the connector. (b) Remove the 3 screws and cooling unit damper servo sub-assembly. 14. REMOVE HEATER RADIATOR UNIT SUB-ASSEMBLY
(c) Remove the heater radiator unit sub-assembly. 15. REMOVE NO. 1 COOLER EVAPORATOR SUB-ASSEMBLY
(c) Remove the blower case (back side).
16. REMOVE NO. 1 COOLER THERMISTOR
17. REMOVE COOLER EXPANSION VALVE
(b) Remove the tube and accessory and 2 O-rings. (c) Remove the cooler expansion valve and 2 O-rings from the No. 1 cooler evaporator sub-assembly. |
Toyota Tundra Service Manual > Seat Heater System: 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 ...