Infiniti QX56 (Z62). Manual — part 782
SYSTEM
HAC-19
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
*: Inlet status is displayed by indicator when activating automatic control
Without ACCS (Advanced Climate Control System)
1.
Intake door
2.
In-cabin microfilter
3.
Blower motor
4.
Evaporator
5.
Air mix door (Driver side/Passenger
side)
6.
Heater core
7.
Foot door
8.
Ventilator door
9.
Upper ventilator door
10. Defroster door
Fresh air intake
Recirculation air
Center ventilator
Side ventilator
Upper ventilator
Foot
Rear foot
Defroster
Switch/Dial position
Door position
Ventilator
door
Foot
door
Defroster
door
Intake
door
Upper
ventilator
door
Air mix
door
(Driver
side)
Air mix
door
(Passen-
ger
side)
AUTO switch
AUTO
—
AUTO
MODE
switch
VENT
H
E
N
—
B/L
I
F
N
—
FOOT
J
G
O
—
D/F
J
G
O
B
—
DEF switch
J
E
P
B
K
—
Intake switch
*
FRE
—
B
—
REC
—
A
—
Upper ventila-
tor switch
ON
—
L – M
—
OFF
—
K
—
Temperature
control dial
(Driver side)
DUAL
switch:
OFF
18.0
°
C (60
°
F)
—
C
18.5
°
C (61
°
F)
⇔
31.5
°
C (89
°
F)
—
AUTO
32.0
°
C (90
°
F)
—
D
Temperature
control dial
(Driver side)
DUAL
switch:
ON
18.0
°
C (60
°
F)
—
C
—
18.5
°
C (61
°
F)
⇔
31.5
°
C (89
°
F)
—
AUTO
—
32.0
°
C (90
°
F)
—
D
—
Temperature
control dial
(Passenger
side)
18.0
°
C (60
°
F)
—
C
18.5
°
C (61
°
F)
⇔
31.5
°
C (89
°
F)
—
AUTO
32.0
°
C (90
°
F)
—
D
OFF switch
AUTO
—
HAC-20
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
SYSTEM
1.
Intake door
2.
In-cabin microfilter
3.
Blower motor
4.
Evaporator
5.
Air mix door (Driver side/Passenger
side)
6.
Heater core
7.
Foot door
8.
Ventilator door
9.
Upper ventilator door
10. Defroster door
Fresh air intake
Recirculation air
Center ventilator
Side ventilator
Upper ventilator
Foot
Rear foot
Defroster
JMIIA0727ZZ
Switch/Dial position
Door position
Ventilator
door
Foot
door
Defroster
door
Intake
door
Upper
ventilator
door
Air mix
door
(Driver
side)
Air mix
door
(Passen-
ger
side)
AUTO switch
AUTO
—
AUTO
MODE
switch
VENT
H
E
N
—
B/L
I
F
N
—
FOOT
J
G
O
—
D/F
J
G
O
B
—
DEF switch
J
E
P
B
K
—
FRE switch
*
—
B
—
REC switch
*
—
A
—
Upper ventila-
tor switch
ON
—
L – M
—
OFF
—
K
—
SYSTEM
HAC-21
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
*: Inlet status is displayed by indicator when activating automatic control
AIR DISTRIBUTION
FRONT AUTOMATIC AIR CONDITIONING SYSTEM : Temperature Control
INFOID:0000000006275867
• When ignition switch is in the ON position, A/C auto amp. always
automatically controls temperature regardless of front air condi-
tioning operational state.
• A/C auto amp. calculates the target front air mix door opening
angle depending on set temperature, in-vehicle temperature (front
side), ambient temperature, and sunload.
• Front air mix door is controlled depending on the comparison of
current front air mix door opening angle and target front air mix
door opening angle.
• Regardless of in-vehicle temperature (front side), ambient temper-
ature, and sunload, front air mix door is fixed at the fully cold posi-
tion when set temperature is 18.0
°
C (60
°
F), and at the fully hot
position when set temperature is 32.0
°
C (90
°
F).
FRONT AUTOMATIC AIR CONDITIONING SYSTEM : Fail-safe
INFOID:0000000006275868
FAIL-SAFE FUNCTION
Temperature
control dial
(Driver side)
DUAL
switch:
OFF
18.0
°
C (60
°
F)
—
C
18.5
°
C (61
°
F)
⇔
31.5
°
C (89
°
F)
—
AUTO
32.0
°
C (90
°
F)
—
D
Temperature
control dial
(Driver side)
DUAL
switch:
ON
18.0
°
C (60
°
F)
—
C
—
18.5
°
C (61
°
F)
⇔
31.5
°
C (89
°
F)
—
AUTO
—
32.0
°
C (90
°
F)
—
D
—
Temperature
control dial
(Passenger
side)
18.0
°
C (60
°
F)
—
C
18.5
°
C (61
°
F)
⇔
31.5
°
C (89
°
F)
—
AUTO
32.0
°
C (90
°
F)
—
D
OFF switch
AUTO
—
Switch/Dial position
Door position
Ventilator
door
Foot
door
Defroster
door
Intake
door
Upper
ventilator
door
Air mix
door
(Driver
side)
Air mix
door
(Passen-
ger
side)
Discharge air flow
Mode position
Condition
Air outlet/distribution
VENT
FOOT
DEF
Center
Side
Front
Rear
DUAL and Up-
per ventilator
switch: OFF
50%
50%
—
—
—
30%
30%
26%
14%
—
—
14%
36%
23%
27%
—
12%
32%
20%
36%
—
11%
—
—
89%
JMIIA0731GB
HAC-22
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
SYSTEM
If a communication error exists between the A/C auto amp., and the AV control unit and preset switch for 30
seconds or longer, air conditioning is controlled under the following conditions:
When ambient temperature is less than 3
°
C (37
°
F) and engine coolant temperature is less than 56
°
C (133
°
F)
When ambient temperature is 3
°
C (37
°
F) or more, or engine coolant temperature is 56
°
C (133
°
F) or more
REAR AUTOMATIC AIR CONDITIONING SYSTEM
Compressor
: ON
Air outlet
: DEF
Air inlet
: FRE (Fresh air intake)
Blower fan speed
: AUTO
Set temperature
: Setting before communication error occurs
Compressor
: ON
Air outlet
: AUTO
Air inlet
: 20% FRE (20% fresh air intake)
Blower fan speed
: AUTO
Set temperature
: Setting before communication error occurs
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