System Description

WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

GENERAL
1. The air conditioning system has the following features:
  - In accordance with the temperature set using the temperature control switch, the air conditioning amplifier determines the outlet temperature based on the input signals from various sensors. In addition, corrections are made in accordance with the signals from the water temperature sensor to control the outlet air temperature.
  - Controls the blower motor in accordance with the airflow volume determined by the air conditioning amplifier based on the input signals from various sensors.
  - Automatically changes the outlets in accordance with the outlet mode ratio that is determined by the air conditioning amplifier based on the input signals from various sensors.
  - Based on the signals from the ambient temperature sensor, this system calculates the outside temperature and indicates it in the multi-information display in the combination meter assembly.
  - The left/right independent temperature control and neural network control make air conditioner control available to suit the persons in the driver seat and in the passenger seat.
  - Turns the rear defogger and outside rear mirror heaters on for 15 minutes when the rear defogger switch is pressed. Turns them off if the switch is pressed while they are operating.
  - Checks the sensors in accordance with the operation of the air conditioner switches.
  - The air conditioning amplifier has the function of controlling the indicator lighting.

MODE POSITION AND DAMPER OPERATION

Fig 1: Identifying Mode Position And Damper Operation Diagram

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

DAMPER POSITION OPERATION CHART

Control Damper		Control Position	Damper Position	Operation
Air Inlet Control Damper		FRESH	A	Brings in fresh air.
Air Inlet Control Damper		RECIRC	B	Recirculates internal air.
Air Mix Control Damper (Left/Right Independent Control)	Driver and Front Passenger Side	MAX COOL to MAX HOT (TEMP. SETTING 18 to 32°C (65 to 85°F))	C, D, E	Varies mixture ratio of fresh air and recirculation air in order to regulate temperature continuously from HOT to COOL.
Mode Control Film Damper	Driver and Front Passenger Side	FACE	I, J, L, P, U	Air blows out of center registers and side registers.
		BI-LEVEL	I, Q, M, R, T	Air mainly blows out of center registers, side registers, and footwell register ducts.
		FOOT	H, K, N, O, S	Air mainly blows out of front and rear footwell register ducts. In addition, air blows out slightly from front and side defrosters, and side registers.
		FOOT/DEF	G, K, N, O, T	Air mainly blows out of front and side defrosters to defrost windshield. Air also blows out from front and rear footwell register ducts, and side registers.
		DEF	F, K, N, O, U	Air blows out of front and side defrosters and side registers to defrost windshield.

AIR OUTLET AND AIRFLOW VOLUME

Fig 2: Identifying Air Outlet And Airflow
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

The circle size (O) indicates the proportion of the flow volume.

Fig 3: Air Outlet Position Symbol Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002