Toyota Camry Hybrid AHV40 Manual page 318

JSYSTEM CONTROL
1. General
The air conditioning system has the following controls.
Control
Neural Network
Control
[See page BE-58]
Outlet Air Outlet Air
Temp. Control
Blower Control
Air Outlet Control
Air Inlet Control
Electric
Inverter
Compressor Compressor
Compressor Compressor
Speed
Control
Control
[See page
BE-59]
PTC Heater Control
Electric Water Pump
Control
ECO Mode Control
[See page BE-60]
Rear Window
Defogger Control
[See page BE-159]
Outside Temperature
Indication Control
Self-Diagnosis
[See page BE-62]
BODY ELECTRICAL - AIR CONDITIONING
This control is capable of effecting complex control by artificially simulating the
information processing method of the nervous system of living organisms in order to
establish a complex input/output relationship that is similar to a human brain.
Based on the temperature set at the temperature control switch, the neural network
control calculates the outlet air temperature based on the input signals from various
sensors.
The temperature settings for the driver and front passenger are controlled independently
in order to provide separate vehicle interior temperatures for the right and left sides of
the cabin. Thus, air conditioning that accommodates the occupants' preferences has been
realized.
Controls the blower motor in accordance with the airflow volume that has been
calculated by the neural network control based on the input signals from various sensors.
Automatically switches the air outlets in accordance with the outlet mode that has been
calculated by the neural network control based on the input signals from various sensors.
In accordance with the engine coolant temperature, outside air temperature, amount of
sunlight, required blower volume, outlet temperature, and vehicle speed conditions, this
control automatically switches the blower outlet to FOOT/DEF mode to prevent the
windows from becoming fogged when the outside air temperature is low.
Automatically controls the air inlet control damper to achieve the calculated required
outlet air temperature.
The A/C ECU calculates the target speed of the compressor based on the target
evaporator temperature (which is calculated by the room temperature sensor, outside
temp. sensor, and the solar sensor) and the actual evaporator temperature that is detected
by the evaporator temperature sensor in order to control the compressor speed.
The A/C ECU calculates the target evaporator temperature, which includes corrections
based on the room temperature sensor, outside temp. sensor, the solar sensor, and
evaporator temperature sensor. Accordingly, the A/C ECU controls the compressor
speed to an extent that would not inhibit the proper cooling performance or defogging
performance.
When the THS II is operating (READY), and the blower motor is turned ON, the A/C
ECU turns ON the PTC heater if the conditions listed below are met.
D Engine coolant temperature is below specified temperature.
D Outside temperature is below specified temperature (DEF mode).
D Tentative air mix damper opening angle is above the specified value (MAX HOT).
When the blower motor is ON and the engine has been stopped by the THS II control,
the A/C ECU turns ON the electric water pump in accordance with the judgment of the
air mix damper opening.
When the ECO switch is turned ON, the A/C ECU limits the air conditioning system
performance.
Operates the rear defogger and outside rear view mirror heaters on for 15 minutes to 60
minutes when the rear defogger button is pressed. Switches them off if the button is
pressed again while they are operating.
Calculates the outside temperature using signals transmitted by the outside temperature
sensor. Calculated values are corrected by the A/C ECU and then indicated on the
multi-information display.
A DTC (Diagnostic Trouble Code) is stored in the memory when the A/C ECU detects
a problem with the air conditioning system.
Outline
BE-57