Infiniti G35 (V35) Sedan. Manual — part 765
HAC-32
< FUNCTION DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
AUTOMATIC AIR CONDITIONER SYSTEM
WITH LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CON-
TROL SYSTEM
WITH LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL
SYSTEM : System Diagram
INFOID:0000000000959912
CONTROL SYSTEM
The control system consists of input sensors, switches, unified meter and A/C amp. (microcomputer) and out-
puts. The relationship of these components is shown in the figure below:
WITH LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL
Component
Reference
Air mix door motor
HAC-72, "WITHOUT LEFT AND RIGHT VENTILATION TEMPER-
ATURE SEPARATELY CONTROL SYSTEM : Description"
Ambient sensor
Blower motor
HAC-83, "WITHOUT LEFT AND RIGHT VENTILATION TEMPER-
ATURE SEPARATELY CONTROL SYSTEM : Description"
Compressor
intake door motor
intake sensor
In-vehicle sensor
Mode door motor
Refrigerant pressure sensor
HAC-92, "Component Inspection"
Sunload sensor
Unified meter and A/C amp.
JSIIA0057GB
AUTOMATIC AIR CONDITIONER SYSTEM
HAC-33
< FUNCTION DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
SYSTEM : System Description
INFOID:0000000000959913
CONTROL OPERATION
Display Screen
The operation status of the system is displayed on the screen.
Preset Switch
MODE Switch
The air discharge outlets is controlled with this switch.
Temperature Control Dial (Potentio Temperature Control) (Driver Side)
The set temperature is increased or decreased with this dial.
Temperature Control Dial (Potentio Temperature Control) (Passenger Side)
• The set temperature is increased or decreased with this dial.
• When the temperature control dial is turned, the DUAL switch indicator will automatically illuminate.
AUTO Switch
• The compressor, intake doors, air mix doors, mode doors and blower speed are automatically controlled so
that the in-vehicle temperature will reach, and be maintained at the set temperature selected by the operator.
• When pressing AUTO switch, air inlet, air outlet, fan speed, and discharge air temperature are automatically
controlled.
Defroster (DEF) Switch
Mode doors are set to the defrost position with this switch. Also, intake doors are set to the outside air position,
and compressor turns ON.
A/C Switch
Compressor is ON or OFF with this switch.
(Pressing the A/C switch when the A/C switch is ON will turn OFF the A/C switch and compressor.)
FAN Switches
The blower speed is manually controlled with this switch. Seven speeds are available for manual control (as
shown on the display screen).
JSIIA0058GB
JSIIA0002GB
HAC-34
< FUNCTION DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
AUTOMATIC AIR CONDITIONER SYSTEM
OFF Switch
Compressor and blower are OFF, intake doors and the mode doors are automatically controlled.
Rear Window Defogger Switch
When illumination is ON, rear window is defogged.
Intake Switch
• When intake switch is ON, FRE LED turns ON, and air inlet is fixed to FRE.
• When press intake switch again, REC LED turns ON, and air inlet is fixed to REC.
• When intake switch is pressed for approximately 1.5 seconds or longer, FRE and REC LEDs blink twice.
Then, automatic control mode is entered. Inlet status is displayed by LED even during automatic controlled.
• When FRE LED is turned ON, shifting mode position to D/F or DEF, or when compressor is turned from ON
to OFF, intake switch is automatically turned OFF (fixed to FRE mode). REC mode can be re-entered by
pressing intake switch again, and then compressor is turned ON. (Except D/F or DEF position)
DUAL Switch
• When the DUAL switch indicator is illuminated, the driver side and passenger side, temperature can each be
set independently.
• When the DUAL switch indicator is not illuminated, the driver side outlet and setting temperature is applied
to both sides.
AUTOMATIC AIR CONDITIONER SYSTEM
HAC-35
< FUNCTION DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
DISCHARGE AIR FLOW
JSIIA0077GB
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