Murano Cross Cabriolet Z51 (2012 year). Manual — part 41
GW-28
< REMOVAL AND INSTALLATION >
DOOR GLASS
Fitting between door glass and corner piece assembly
1.
Remove the door glass. Refer to
GW-25, "Removal and Installation"
.
2.
Apply protective tape (B) on door glass at a distance of 25.5 mm (0.1004in), starting from front edge as
shown in the figure above.
JMKIA8393ZZ
1.
Door glass
2.
Mirror base
3.
Quarter window glass
4.
Door weather -strip
F
: 25.5 (1.0004)
G
: 4 (0.157)
H
: 6.6 (0.260)
I
: 9.8 (0.386)
J
: 9.1 (0.358)
K
: 8.5 (0.335)
L
: 2 (0.079)
M
: 2 (0.079)
Unit: mm (in)
Revision: 2013 February
2012 Murano CrossCabriolet
DOOR GLASS
GW-29
< REMOVAL AND INSTALLATION >
C
D
E
F
G
H
I
J
L
M
A
B
GW
N
O
P
3.
Reinstall door glass while fitting the corner piece assembly to the protective tape as shown in the figure
above.
Fitting between door glass and quarter window glass
1.
Fully close door glass and quarter window glass.
2.
Check that both upper edges of door glass and quarter window glass are at the same level.
3.
Check that the distance between door glass and quarter window glass sash is 8.5 mm (0.335 in).
Inclination Adjustment
• Check that door glass is fitted securely into the sash groove.
• Lower the glass slightly [approximately 10 to 20 mm (0.394 to 0.787 in)] and check that the clearance to the
body side weather-strip is parallel. Loosen the regulator mounting bolts, guide rail mounting bolts, and glass
and guide rail mounting bolts to correct the glass position if the clearance between door glass and body side
weather-strip is not parallel.
• Raise door glass fully and adjust door glass top end and body side weather-strip with adjusting bolt (B), (C),
or (D) as shown in the figure above.
• Always start at adjusting with bolt (B). If the desired angle is not achieved, then proceed to adjusting bolt (C)
and (D) respectively.
• Turn the adjusting bolt clockwise to move the door glass upper end outward.
• Turn the adjusting bolt counterclockwise to move the door glass upper end inward.
• Adjustment process with adjusting bolt (C) is the inverse of adjusting bolt (B) and (D).
• When adjusting with adjusting bolt (D), turn the adjusting bolt clockwise to move the door glass upper end
inward, then counterclockwise to move the door glass upper end outward.
JMKIA8598ZZ
1.
Door glass assembly
2.
Quarter window glass sash
3.
Quarter window glass
B
: 8.5 (0.335)
Unit: mm (in)
JMKIA8396ZZ
Revision: 2013 February
2012 Murano CrossCabriolet
GW-30
< REMOVAL AND INSTALLATION >
DOOR REGULATOR
DOOR REGULATOR
Exploded View
INFOID:0000000007565720
Removal and Installation
INFOID:0000000007565721
REMOVAL
1.
Remove the door glass. Refer to
GW-25, "Removal and Installation"
.
2.
Disconnect the power window motor harness connector.
3.
Disconnect the harness fixing clips from the door module assembly.
1. Door panel assembly
2.
Door glass
3.
Module base
4.
Hole cover seal
5.
Power window motor
6.
Door regulator
7.
Door corner piece weather-strip up-
per
8.
Door corner piece weather-strip low-
er
9.
Door corner piece assembly
10. Door inside seal
: Vehicle front
JMKIA8390ZZ
Revision: 2013 February
2012 Murano CrossCabriolet
DOOR REGULATOR
GW-31
< REMOVAL AND INSTALLATION >
C
D
E
F
G
H
I
J
L
M
A
B
GW
N
O
P
4.
Remove door module assembly mounting bolts (A) and then
remove the door module assembly from door panel.
INSTALLATION
Install in the reverse order of removal.
Disassembly and Assembly
INFOID:0000000007565722
DISASSEMBLY
1.
Remove the power window motor from the module assembly.
2.
Remove door regulator assembly from module assembly.
ASSEMBLY
Assemble in the reverse order of disassembly.
Inspection After Removal
INFOID:0000000007565723
Check the regulator assembly for the following items. Replace or
grease it if a malfunction is detected.
• Wire wear
• Regulator deformation
Inspection and Adjustment
INFOID:0000000007565724
SYSTEM INITIALIZATION
• Description: Refer to
.
• Work procedure: Refer to
CHECK ANTI-PINCH FUNCTION
• Description: Refer to
.
• Work procedure: Refer to
FITTING INSPECTION
JMKIA8563ZZ
Glass mounting nut
Tightening torque
: 5.1N.m (0.52kg-m, 45 in-lb)
JMKIA8391ZZ
Revision: 2013 February
2012 Murano CrossCabriolet
GW-32
< REMOVAL AND INSTALLATION >
DOOR REGULATOR
Preparation for adjustment
1.
Apply protective tape (A) as shown on the figure above on door glass and quarter window glass.
2.
Fully close door window glass and quarter window glass, and mark each edge of weather-strip on the
glass as shown by the marks (B).
3.
Measure the clearances (C), (D), and (E) and check that these clearances are in the range provided in the
figure above. If not, then proceed to the adjustment of quarter window glass by following the steps below.
JMKIA8395ZZ
1.
Door glass assembly
2.
Quarter window glass
C:
4.0 (0.157)
D:
9.8 (0.386)
E:
9.8 (0.386)
Unit: mm (in)
Revision: 2013 February
2012 Murano CrossCabriolet
DOOR REGULATOR
GW-33
< REMOVAL AND INSTALLATION >
C
D
E
F
G
H
I
J
L
M
A
B
GW
N
O
P
Fitting between door glass and corner piece assembly
1.
Remove the door glass. Refer to
GW-25, "Removal and Installation"
.
2.
Apply protective tape (B) on door glass at a distance of 25.5 mm (0.1004in), starting from front edge as
shown in the figure above.
JMKIA8393ZZ
1.
Door glass
2.
Mirror base
3.
Quarter window glass
4.
Door weather -strip
F
: 25.5 (1.0004)
G
: 4 (0.157)
H
: 6.6 (0.260)
I
: 9.8 (0.386)
J
: 9.1 (0.358)
K
: 8.5 (0.335)
L
: 2 (0.079)
M
: 2 (0.079)
Unit: mm (in)
Revision: 2013 February
2012 Murano CrossCabriolet
GW-34
< REMOVAL AND INSTALLATION >
DOOR REGULATOR
3.
Reinstall door glass while fitting the corner piece assembly to the protective tape as shown in the figure
above.
Fitting between door glass and quarter window glass
1.
Fully close door glass and quarter window glass.
2.
Check that both upper edges of door glass and quarter window glass are at the same level.
3.
Check that the distance between door glass and quarter window glass sash is 8.5 mm (0.335 in).
Inclination Adjustment
• Check that door glass is fitted securely into the sash groove.
• Lower the glass slightly [approximately 10 to 20 mm (0.394 to 0.787 in)] and check that the clearance to the
body side weather-strip is parallel. Loosen the regulator mounting bolts, guide rail mounting bolts, and glass
and guide rail mounting bolts to correct the glass position if the clearance between door glass and body side
weather-strip is not parallel.
• Raise door glass fully and adjust door glass top end and body side weather-strip with adjusting bolt (B), (C),
or (D) as shown in the figure above.
• Always start at adjusting with bolt (B). If the desired angle is not achieved, then proceed to adjusting bolt (C)
and (D) respectively.
• Turn the adjusting bolt clockwise to move the door glass upper end outward.
• Turn the adjusting bolt counterclockwise to move the door glass upper end inward.
• Adjustment process with adjusting bolt (C) is the inverse of adjusting bolt (B) and (D).
• When adjusting with adjusting bolt (D), turn the adjusting bolt clockwise to move the door glass upper end
inward, then counterclockwise to move the door glass upper end outward.
JMKIA8598ZZ
1.
Door glass assembly
2.
Quarter window glass sash
3.
Quarter window glass
B
: 8.5 (0.335)
Unit: mm (in)
JMKIA8396ZZ
Revision: 2013 February
2012 Murano CrossCabriolet
HAC-1
VENTILATION, HEATER & AIR CONDITIONER
C
D
E
F
G
H
J
K
L
M
SECTION
HAC
A
B
HAC
N
O
P
CONTENTS
HEATER & AIR CONDITIONING CONTROL SYSTEM
AUTOMATIC AIR CONDITIONING
PRECAUTION . . . . . . . . . . . ...
PRECAUTIONS . . . . . . . . . . . . ...
Precaution for Battery Service . . . . . . . . ..
Service Procedure Precautions for Models with a
Pop-up Roll Bar . . . . . . . . . . . . . .....
SYSTEM DESCRIPTION . . . . . . . ..
COMPONENT PARTS . . . . . . . . . .
Component Parts Location . . . . . . . . . ....
Component Description . . . . . . . . . . .....
BLOWER UNIT ASSEMBLY . . . . . . . . . ...
BLOWER UNIT ASSEMBLY : Intake Door Motor . ..
BLOWER UNIT ASSEMBLY : Blower Motor . . .....
HEATER & COOLING UNIT ASSEMBLY . . . . ...
HEATER & COOLING UNIT ASSEMBLY : Aspira-
tor . . . . . . . . . . . . . . . . . . . ..
HEATER & COOLING UNIT ASSEMBLY : Intake
Sensor . . . . . . . . . . . . . . . . . ...
HEATER & COOLING UNIT ASSEMBLY : Air Mix
Door Motor (Driver side) . . . . . . . . . . ....
HEATER & COOLING UNIT ASSEMBLY : Air Mix
Door Motor (Passenger side) . . . . . . . . ....
HEATER & COOLING UNIT ASSEMBLY : Mode
Door Motor . . . . . . . . . . . . . . . ....
HEATER & COOLING UNIT ASSEMBLY : Upper
Ventilator Door Motor . . . . . . . . . . . ....
A/C Auto Amp. . . . . . . . . . . . . . . ..
Ambient Sensor . . . . . . . . . . . . . .....
In-vehicle Sensor . . . . . . . . . . . . . ..
Sunload Sensor . . . . . . . . . . . . . .....
Refrigerant Pressure Sensor . . . . . . . . .....
Magnet Clutch . . . . . . . . . . . . . . .
SYSTEM . . . . . . . . . . . . . . .
System Diagram . . . . . . . . . . . . . ..
System Description . . . . . . . . . . . . ..
Temperature Control . . . . . . . . . . . ...
Air Outlet Control . . . . . . . . . . . . . .
Air Flow Control . . . . . . . . . . . . . ...
Air Inlet Control . . . . . . . . . . . . . .
Compressor Control . . . . . . . . . . . .
Door Control . . . . . . . . . . . . . . .
Fail-safe . . . . . . . . . . . . . . . . ...
OPERATION . . . . . . . . . . . . . .
Switch Name and Function . . . . . . . . . ..
DIAGNOSIS SYSTEM (A/C AUTO AMP.) . .
Description . . . . . . . . . . . . . . . ...
CONSULT Function . . . . . . . . . . . . .
ECU DIAGNOSIS INFORMATION . . . ..
A/C AUTO AMP. . . . . . . . . . . . ...
Reference Value . . . . . . . . . . . . . ..
Fail-safe . . . . . . . . . . . . . . . . ...
DTC Index . . . . . . . . . . . . . . . ...
ECM, IPDM E/R . . . . . . . . . . . . .
List of ECU Reference . . . . . . . . . . . .
WIRING DIAGRAM . . . . . . . . . ..
AUTOMATIC AIR CONDITIONING SYSTEM ...
Wiring Diagram . . . . . . . . . . . . . .
BASIC INSPECTION . . . . . . . . ...
DIAGNOSIS AND REPAIR WORK FLOW . ...
Work Flow . . . . . . . . . . . . . . . .
OPERATION INSPECTION . . . . . . . ..
Work Procedure . . . . . . . . . . . . . ...
SYSTEM SETTING . . . . . . . . . . ...
Temperature Setting Trimmer . . . . . . . . .
Revision: 2013 February
2012 Murano CrossCabriolet
HAC-2
Inlet Port Memory Function (REC) . . . . . . .
Inlet Port Memory Function (FRE) . . . . . . ..
Foot Position Setting Trimmer . . . . . . . ....
DTC/CIRCUIT DIAGNOSIS . . . . . . .
U1000 CAN COMM CIRCUIT . . . . . . .
Description . . . . . . . . . . . . . . . ..
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
U1010 CONTROL UNIT (CAN) . . . . . . .
Description . . . . . . . . . . . . . . . ..
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
B2578, B2579 IN-VEHICLE SENSOR . . . ...
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
Component Inspection . . . . . . . . . . ....
B257B, B257C AMBIENT SENSOR . . . . .
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
Component Inspection . . . . . . . . . . ....
B2581, B2582 INTAKE SENSOR . . . . . ..
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
Component Inspection . . . . . . . . . . ....
B2630, B2631 SUNLOAD SENSOR . . . . .
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
Component Inspection . . . . . . . . . . ....
B2632, B2633 AIR MIX DOOR MOTOR
(DRIVER SIDE) . . . . . . . . . . . . ..
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
B2634, B2635 AIR MIX DOOR MOTOR (PAS-
SENGER SIDE) . . . . . . . . . . . . ..
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
B2636, B2637, B2638, B2639, B2654, B2655
MODE DOOR MOTOR . . . . . . . . . ..
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
B263D, B263E, B263F INTAKE DOOR MO-
TOR . . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
B2661, B2662, B2663 UPPER VENTILATOR
DOOR MOTOR . . . . . . . . . . . . ..
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
POWER SUPPLY AND GROUND CIRCUIT . .
A/C AUTO AMP. . . . . . . . . . . . . . .
A/C AUTO AMP. : Diagnosis Procedure . . . . .
DOOR MOTOR . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
BLOWER MOTOR . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
Component Inspection (Blower Motor) . . . . ...
Component Inspection (Blower Relay) . . . . ...
MAGNET CLUTCH . . . . . . . . . . .
Component Function Check . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
SYMPTOM DIAGNOSIS . . . . . . .
AUTOMATIC AIR CONDITIONING SYSTEM ...
Symptom Table . . . . . . . . . . . . . ...
INSUFFICIENT COOLING . . . . . . . . .
Description . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
INSUFFICIENT HEATING . . . . . . . . .
Description . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
COMPRESSOR DOES NOT OPERATE . . ...
Description . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
REMOVAL AND INSTALLATION . . . ..
PRESET SWITCH . . . . . . . . . . . ..
Exploded View . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
A/C AUTO AMP. . . . . . . . . . . . .
Exploded View . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
AMBIENT SENSOR . . . . . . . . . . ...
Exploded View . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
IN-VEHICLE SENSOR . . . . . . . . . ...
Exploded View . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
SUNLOAD SENSOR . . . . . . . . . . .
Exploded View . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
INTAKE SENSOR . . . . . . . . . . . ..
Exploded View . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
REFRIGERANT PRESSURE SENSOR . . .
Exploded View . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
Revision: 2013 February
2012 Murano CrossCabriolet
HAC-3
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
DOOR MOTOR . . . . . . . . . . . . ...
Exploded View . . . . . . . . . . . . . .
AIR MIX DOOR MOTOR . . . . . . . . . . ...
AIR MIX DOOR MOTOR : Removal and Installa-
tion . . . . . . . . . . . . . . . . . . ..
MODE DOOR MOTOR . . . . . . . . . . . ..
MODE DOOR MOTOR : Removal and Installation
INTAKE DOOR MOTOR . . . . . . . . . . .
INTAKE DOOR MOTOR : Removal and Installa-
tion . . . . . . . . . . . . . . . . . . ...
UPPER VENTILATOR DOOR MOTOR . . . . . .
UPPER VENTILATOR DOOR MOTOR : Removal
and Installation . . . . . . . . . . . . . .
Revision: 2013 February
2012 Murano CrossCabriolet
HAC-4
< PRECAUTION >
[AUTOMATIC AIR CONDITIONING]
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000007563373
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.
WARNING:
Always observe the following items for preventing accidental activation.
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see “SRS AIR BAG”.
• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-
vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
Always observe the following items for preventing accidental activation.
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the
ignition ON or engine running, never use air or electric power tools or strike near the sensor(s) with
a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the
battery, and wait at least 3 minutes before performing any service.
Precaution for Battery Service
INFOID:0000000007563374
Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
ence between the window edge and the vehicle when the door is opened/closed. During normal operation, the
window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.
Service Procedure Precautions for Models with a Pop-up Roll Bar
INFOID:0000000007563375
WARNING:
Always observe the following items for preventing accidental activation.
• Risk of passenger injury or death may increase if the pop-up roll bar does not deploy during a roll
over collision. In order to reduce the chance of an incident where the pop-up roll bar is inoperative,
all maintenance must be performed by a NISSAN or INFINITI dealer.
• Before removing and installing the pop-up roll bar component parts and harness, always turn the
ignition switch OFF, disconnect the battery negative terminal, and wait for 3 minutes or more. (The
purpose of this operation is to discharge electricity that is accumulated in the auxiliary power supply
circuit in the air bag diagnosis sensor unit.)
• When repairing, removing, and installing a pop-up roll bar, always refer to SRS AIR BAG and SRS
AIR BAG CONTROL warnings in the Service Manual.
Revision: 2013 February
2012 Murano CrossCabriolet
COMPONENT PARTS
HAC-5
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
SYSTEM DESCRIPTION
COMPONENT PARTS
Component Parts Location
INFOID:0000000007563376
ENGINE COMPARTMENT
JPIIA0607ZZ
Revision: 2013 February
2012 Murano CrossCabriolet
HAC-6
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
COMPONENT PARTS
PASSENGER COMPARTMENT
1.
Refrigerant pressure sensor
2.
Compressor (magnet clutch)
3.
Ambient sensor
1.
Intake door motor
2.
Upper ventilator door motor
3.
Air mix door motor (passenger side)
4.
Air mix door motor (driver side)
5.
Mode door motor
6.
Sunload sensor
JPIIA0608ZZ
Revision: 2013 February
2012 Murano CrossCabriolet
COMPONENT PARTS
HAC-7
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Component Description
INFOID:0000000007563377
BLOWER UNIT ASSEMBLY
BLOWER UNIT ASSEMBLY : Intake Door Motor
INFOID:0000000007563378
• Intake door motor consists of motor that drives door, PBR (Potentio Balance Register) that detects door
position and LCU (Local Control Unit) that performs multiplex communication control (LAN) with A/C auto
amp. Refer to
.
7.
In-vehicle sensor
8.
A/C auto amp.
9.
Intake sensor
10. Blower motor
Component
Description
Blower unit assembly
Intake door motor
HAC-7, "BLOWER UNIT ASSEMBLY : Intake Door Motor"
Blower motor
HAC-8, "BLOWER UNIT ASSEMBLY : Blower Motor"
Heater & cooling unit
assembly
Aspirator
HAC-8, "HEATER & COOLING UNIT ASSEMBLY : Aspirator"
Intake sensor
HAC-8, "HEATER & COOLING UNIT ASSEMBLY : Intake Sensor"
Air mix door motor
(driver side)
HAC-8, "HEATER & COOLING UNIT ASSEMBLY : Air Mix Door Motor (Driver side)"
Air mix door motor
(passenger side)
HAC-9, "HEATER & COOLING UNIT ASSEMBLY : Air Mix Door Motor (Passenger
side)"
Mode door motor
HAC-9, "HEATER & COOLING UNIT ASSEMBLY : Mode Door Motor"
Upper ventilator
door motor
HAC-9, "HEATER & COOLING UNIT ASSEMBLY : Upper Ventilator Door Motor"
Preset switch
Preset switch is integrated with A/C controller and AV operation switch. A/C switch op-
eration signal is transmitted from preset switch to AV control unit via communication
line.
Refer to
AV-10, "Component Parts Location"
(BOSE audio without navigation) or
126, "Component Parts Location"
(BOSE audio with navigation) for detailed installation
location.
Display unit
Display unit indicates operation status of air conditioning.
Refer to
AV-10, "Component Parts Location"
(BOSE audio without navigation) or
126, "Component Parts Location"
(BOSE audio with navigation) for detailed installation
location.
AV control unit
AV control unit transmits A/C switch operation signal to A/C auto amp. via CAN com-
munication line.
Refer to
AV-10, "Component Parts Location"
(BOSE audio without navigation) or
126, "Component Parts Location"
(BOSE audio with navigation) for detailed installation
location.
A/C auto amp.
ECM
ECM, when receiving A/C ON signal and blower fan ON signal from A/C auto amp.,
transmits A/C compressor request signal to IPDM E/R via CAN communication ac-
cording to status of the engine and refrigerant pressure.
ECM transmits engine coolant temperature signal to A/C auto amp. via CAN commu-
nication line.
Refer to
EC-15, "ENGINE CONTROL SYSTEM : Component Parts Location"
for de-
tailed installation location.
IPDM E/R
A/C relay is integrated in IPDM E/R. IPDM E/R operates A/C relay when receiving A/
C compressor request signal from ECM via CAN communication line.
Refer to
PCS-4, "Component Parts Location"
for detailed installation location.
Ambient sensor
In-vehicle sensor
Sunload sensor
Refrigerant pressure sensor
HAC-9, "Refrigerant Pressure Sensor"
Magnet clutch
Revision: 2013 February
2012 Murano CrossCabriolet
HAC-8
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
COMPONENT PARTS
• Rotation of motor is transmitted to intake door, then air inlet is switched.
BLOWER UNIT ASSEMBLY : Blower Motor
INFOID:0000000007563379
• The blower motor utilizes a brush-less motor with a rotating mag-
net. Quietness is improved over previous motors that rotates coil
while brush functions as contact points.
• Rotation speed is changed according to blower motor control sig-
nal (duty ratio) from A/C auto amp.
HEATER & COOLING UNIT ASSEMBLY
HEATER & COOLING UNIT ASSEMBLY : Aspirator
INFOID:0000000007563380
The aspirator generates the vacuum by the air blown from the heater
& cooling unit case and draws the air of the passenger room to the
in-vehicle sensor area via the aspirator duct.
HEATER & COOLING UNIT ASSEMBLY : Intake Sensor
INFOID:0000000007563381
Intake sensor measures evaporator fin temperature. The sensor uses a thermistor which is sensitive to the
change in temperature. The electrical resistance of the thermistor decreases as temperature increases.
HEATER & COOLING UNIT ASSEMBLY : Air Mix Door Motor (Driver side)
INFOID:0000000007563382
• Air mix door motor (driver side) consists of motor that drives door, PBR (Potentio Balance Register) that
detects door position and LCU (Local Control Unit) that performs multiplex communication control (LAN) with
A/C auto amp. Refer to
• Rotation of motor is transmitted to air mix door (driver side), then air flow temperature (driver side) is
switched.
RJIA2467J
ZHA152H
RJIA1804E
Revision: 2013 February
2012 Murano CrossCabriolet
COMPONENT PARTS
HAC-9
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
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A
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HAC
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HEATER & COOLING UNIT ASSEMBLY : Air Mix Door Motor (Passenger side)
INFOID:0000000007563383
• Air mix door motor (passenger side) consists of motor that drives door, PBR (Potentio Balance Register) that
detects door position and LCU (Local Control Unit) that performs multiplex communication control (LAN) with
A/C auto amp. Refer to
• Rotation of motor is transmitted to air mix door (passenger side), then air flow temperature (passenger side)
is switched.
HEATER & COOLING UNIT ASSEMBLY : Mode Door Motor
INFOID:0000000007563384
• Mode door motor consists of motor that drives door, PBR (Potentio Balance Register) that detects door posi-
tion and LCU (Local Control Unit) that performs multiplex communication control (LAN) with A/C auto amp.
Refer to
• Rotation of motor is transmitted to mode door (ventilator door, max. cool door, defroster door and foot door)
by lever, link, and rod, then air outlet is switched.
HEATER & COOLING UNIT ASSEMBLY : Upper Ventilator Door Motor
INFOID:0000000007563385
• Upper ventilator door motor consists of motor that drives door, PBR (Potentio Balance Register) that detects
door position and LCU (Local Control Unit) that performs multiplex communication control (LAN) with A/C
auto amp. Refer to
.
• Rotation of motor is transmitted to upper ventilator door by lod and lever, then air outlet (upper ventilator) is
switched.
A/C Auto Amp.
INFOID:0000000007563386
A/C auto amp. controls automatic air conditioning system, by receiving and calculating signal from each sen-
sor and switch. A/C auto amp. has self-diagnosis function. Diagnosis of air conditioning system can be per-
formed quickly.
Ambient Sensor
INFOID:0000000007563387
Ambient sensor measures ambient air temperature. The sensor uses a thermistor which is sensitive to the
change in temperature. The electrical resistance of the thermistor decreases as temperature increases.
In-vehicle Sensor
INFOID:0000000007563388
In-vehicle sensor measures temperature of intake air that flows through aspirator to passenger room. The sen-
sor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the ther-
mistor decreases as temperature increases.
Sunload Sensor
INFOID:0000000007563389
Sunload sensor measures sunload amount. This sensor converts sunload amount to voltage signal by photo-
diode and transmits it to A/C auto amp.
Refrigerant Pressure Sensor
INFOID:0000000007563390
DESCRIPTION
• The refrigerant pressure sensor converts high-pressure side refrigerant pressure into voltage and transmits
it to ECM.
• ECM operates cooler cycle protection and cooling fan speed control according to voltage value that is input.
PBIB2657E
Revision: 2013 February
2012 Murano CrossCabriolet
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