Infiniti QX56 (Z62). Manual — part 780
COMPONENT PARTS
HAC-11
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
ACCS (ADVANCED CLIMATE CONTROL SYSTEM) : Component Parts Location
INFOID:0000000006275852
ACCS (ADVANCED CLIMATE CONTROL SYSTEM) : Component Description
INFOID:0000000006275853
1.
Preset switch
2.
Exhaust gas / outside odor detecting
sensor
3.
AV control unit
Refer to
.
4.
Front display
5.
Ionizer
6.
Intake door motor
7.
A/C auto amp.
A.
Left side of heater & cooling unit as-
sembly
B.
Back side of blower unit assembly
C.
Cluster lid C is removed
JMIIA0814ZZ
Component
Description
Blower unit
Intake door motor
The LCU (Local Control Unit) is installed to intake door motor so as to per-
form the multiplex communication control (LIN).
Refer to
HAC-18, "FRONT AUTOMATIC AIR CONDITIONING SYSTEM :
AV control unit
AV control unit transmits A/C switch operation signal to A/C auto amp. via
CAN communication line.
A/C auto amp.
A/C auto amp. controls ACCS (advanced climate control system) by input-
ting and calculating signals from each sensor and each switch. A/C auto
amp. has self-diagnosis function. Diagnosis of ACCS (advanced climate
control system) can be performed quickly.
Exhaust gas / outside odor detecting sensor
Exhaust gas / outside odor detecting sensor measures unpleasant odor out-
side of passenger room. In addition to previous exhaust gas detection func-
tion, unpleasant odor in ambient atmosphere is measured.
HAC-12
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
COMPONENT PARTS
Aspirator
INFOID:0000000006275856
The aspirator generates the vacuum by the air blown from the heater
& cooling unit and draws the air of the passenger room to the front
in-vehicle sensor area via the aspirator duct.
Front Blower Motor
INFOID:0000000006275857
The front blower motor utilizes a brush-less motor with a rotating
magnet. Quietness is improved comparing to a conventional motor
(brush motor) that rotates coil while brush functions as contact
points.
Front display
Front display indicates operation status of ACCS (advanced climate control
system).
Heater & cooling unit as-
sembly
Ionizer
Ionizer generates an approximately equal proportional amount of positive
and negative ions in the air.
Preset switch
Preset switch is integrated with front A/C control and AV operation switch.
Front A/C control operation signal is transmitted from preset switch to AV
control unit via communication line.
Component
Description
RJIA1804E
RJIA2467J
ZHA152H
COMPONENT PARTS
HAC-13
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Rear Blower Motor
INFOID:0000000006275858
The rear blower motor utilizes a brush-less motor with a rotating
magnet. Quietness is improved comparing to a conventional motor
(brush motor) that rotates coil while brush functions as contact
points.
Refrigerant Pressure Sensor
INFOID:0000000006275859
Description
Refrigerant pressure sensor is installed to upper portion of liquid tank. The refrigerant pressure sensor con-
verts high-pressure side refrigerant pressure into voltage and outputs it to ECM. ECM operates cooling system
protection and idle speed control according to voltage value that is input.
Structure and operation
The refrigerant pressure sensor is a capacitance type sensor. It consists of a pressure detection area and a
signal processing area. The pressure detection area, which is a variable capacity condenser, changes internal
static capacitance according to pressure force. The signal processing area detects the static capacitance of
the pressure detection area, converts the static capacitance into a voltage value, and transmits the voltage
value to ECM.
RJIA2467J
ZHA152H
PBIB2657E
HAC-14
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
SYSTEM
SYSTEM
FRONT AUTOMATIC AIR CONDITIONING SYSTEM
FRONT AUTOMATIC AIR CONDITIONING SYSTEM : System Diagram
INFOID:0000000006275860
FRONT AUTOMATIC AIR CONDITIONING SYSTEM : System Description
INFOID:0000000006275861
• Front automatic air conditioning system is controlled by each function of A/C auto amp., ECM and IPDM E/
R.
Control by A/C auto amp.
-
HAC-15, "FRONT AUTOMATIC AIR CONDITIONING SYSTEM : Air Flow Control"
-
HAC-16, "FRONT AUTOMATIC AIR CONDITIONING SYSTEM : Air Inlet Control"
JMIIA0816GB
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