Nissan Juke (2016 year). Service Repair Manual — part 421
PRECAUTIONS
HAC-5
< PRECAUTION >
[AUTOMATIC AIR CONDITIONING]
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000012199987
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, it is recommended that all maintenance
and repair be performed by an authorized NISSAN/INFINITI dealer.
• Improper repair, 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 or batteries, and wait at least 3 minutes before performing any service.
Precautions for Removing Battery Terminal
INFOID:0000000012963103
When disconnecting the battery terminal, pay attention to the following.
• Always use a 12V battery as power source.
• Never disconnect battery terminal while engine is running.
• When removing the 12V battery terminal, turn OFF the ignition
switch and wait at least 30 seconds.
• For vehicles with the engine listed below, remove the battery termi-
nal after a lapse of the specified time:
NOTE:
ECU may be active for several tens of seconds after the ignition switch is turned OFF. If the battery terminal
is removed before ECU stops, then a DTC detection error or ECU data corruption may occur.
• After high-load driving, if the vehicle is equipped with the V9X engine, turn the ignition switch OFF and wait
for at least 15 minutes to remove the battery terminal.
NOTE:
D4D engine
: 20 minutes
YS23DDT
: 4 minutes
HRA2DDT
: 12 minutes
YS23DDTT
: 4 minutes
K9K engine
: 4 minutes
ZD30DDTi
: 60 seconds
M9R engine
: 4 minutes
ZD30DDTT
: 60 seconds
R9M engine
: 4 minutes
V9X engine
: 4 minutes
YD25DDTi
: 2 minutes
SEF289H
Revision: November 2015
2016 JUKE
HAC-6
< PRECAUTION >
[AUTOMATIC AIR CONDITIONING]
PRECAUTIONS
• Turbocharger cooling pump may operate in a few minutes after the ignition switch is turned OFF.
• Example of high-load driving
- Driving for 30 minutes or more at 140 km/h (86 MPH) or more.
- Driving for 30 minutes or more on a steep slope.
• For vehicles with the 2-batteries, be sure to connect the main battery and the sub battery before turning ON
the ignition switch.
NOTE:
If the ignition switch is turned ON with any one of the terminals of main battery and sub battery discon-
nected, then DTC may be detected.
• After installing the 12V battery, always check "Self Diagnosis Result" of all ECUs and erase DTC.
NOTE:
The removal of 12V battery may cause a DTC detection error.
Revision: November 2015
2016 JUKE
COMPONENT PARTS
HAC-7
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
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SYSTEM DESCRIPTION
COMPONENT PARTS
Component Parts Location
INFOID:0000000012199989
1.
SYSTEM : Component Parts Loca-
tion"
2.
Magnet clutch
3.
Refrigerant pressure sensor
4.
Ambient sensor
5.
ECM
Refer to
TROL SYSTEM :
Component Parts Location"
.
6.
IPDM E/R
Refer to
7.
Multi display unit
8.
Intake door motor
9.
Air mix door motor
10. Intake sensor
11. In-vehicle sensor
12. Power transistor
13. Aspirator
14. A/C auto amp.
15. Blower motor
16. Mode door motor
17. Sunload sensor
JMIIA1048ZZ
Revision: November 2015
2016 JUKE
HAC-8
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
COMPONENT PARTS
Component Description
INFOID:0000000012199990
A/C UNIT ASSEMBLY
A/C UNIT ASSEMBLY : Aspirator
INFOID:0000000012199991
The aspirator generates the vacuum by the air blown from the A/C
unit assembly and draws the air of the passenger room to the in-
vehicle sensor area via the aspirator duct.
A/C UNIT ASSEMBLY : Intake Sensor
INFOID:0000000012199992
Intake sensor measures temperature of 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.
A/C UNIT ASSEMBLY : Air Mix Door Motor
INFOID:0000000012199993
• The step motor system is adopted for air mix door motor.
• When a drive signal is input from A/C auto amp. to door motor, a step motor built into the door motor rotates
according to the drive signal, and then stops at the target door position. Refer to
• Rotation of motor is transmitted to air mix door (upper air mix door and lower air mix door) by lod and lever.
Air flow temperature is switched.
A.
Left side of A/C unit assembly
B.
Instrument lower panel LH is re-
moved
C.
Back side of A/C unit assembly
D.
Multi display unit is removed
E.
Right side of A/C unit assembly
F.
Right side of switch panel
Component
Description
A/C unit assembly
Aspirator
Intake sensor
Air mix door motor
Mode door motor
Intake door motor
Blower motor
Power transistor
Multi display unit
A/C auto amp.
BCM
ECM
IPDM E/R
Ambient sensor
In-vehicle sensor
Sunload sensor
Refrigerant pressure sensor
Magnet clutch
RJIA1804E
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2016 JUKE
COMPONENT PARTS
HAC-9
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
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A/C UNIT ASSEMBLY : Mode Door Motor
INFOID:0000000012199994
• The step motor system is adopted for mode door motor.
• When a drive signal is input from A/C auto amp. to door motor, a step motor built into the door motor rotates
according to the drive signal, and then stops at the target door position. Refer to
• Rotation of motor is transmitted to mode door (center ventilator and defroster door, sub defroster door, side
ventilator door, and foot door) by link, lod, and lever. Air outlet is switched.
A/C UNIT ASSEMBLY : Intake Door Motor
INFOID:0000000012199995
• Intake door motor consists of motor that drives door and PBR (Potentio Balance Register) that detects door
position.
• Motor operates intake door according to control signal from A/C auto amp. Refer to
.
• Rotation of motor is transmitted to intake door by lever. Air inlet is switched.
• PBR (Potentio Balance Register) transmits PBR feedback signal to A/C auto amp. according to motor posi-
tion.
• According to PBR feedback signal, A/C auto amp. monitors that motor is in an appropriate door position.
A/C UNIT ASSEMBLY : Blower Motor
INFOID:0000000012199996
• The blower motor utilizes a brush-less motor with a rotating mag-
net.
• Quietness is improved over previous motors where the brush was
the point of contact and the coil rotated.
A/C UNIT ASSEMBLY : Power Transistor
INFOID:0000000012199997
• Power transistor, that uses MOS field effect transistor, is adopted
for blower motor speed control.
NOTE:
MOS field effect transistor is a transistor for which the gate portion
is composed of a metal electrode on an oxide layer of semiconduc-
tor. Field effect transistor is controlled by voltage, while ordinary
transistor is controlled by current. Electrode of field effect transistor
is called source, drain, or gate, while electrode of ordinary transis-
tor is called emitter, collector, or base.
• Power transistor continuously controls voltage to blower motor,
according to gate voltage from A/C auto amp.
• This power transistor does not require a HI relay even when the
maximum voltage is applied to blower motor at HI status, because voltage drop is nominal.
JPIIA1575ZZ
ZHA152H
JPIIA1634ZZ
Revision: November 2015
2016 JUKE
HAC-10
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
COMPONENT PARTS
Multi Display Unit
INFOID:0000000012199998
• Multi display unit integrates display and operation switches.
• Operation of each switch (A/C operation signal) and setting status (A/C ECO setting signal and ECO mode
signal) are transmitted to A/C auto amp. via CAN communication.
• Operation status of air conditioning system is indicated in the display according to A/C display signal that is
received from A/C auto amp.
A/C Auto Amp.
INFOID:0000000012199999
A/C auto amp. controls automatic air conditioning system by inputting and calculating signals from each sen-
sor and each switch. A/C auto amp. has self-diagnosis function. Diagnosis of automatic air conditioning sys-
tem can be performed quickly.
BCM
INFOID:0000000012200000
BCM transmits A/C ON signal and blower fan ON signal from A/C auto amp. to ECM via CAN communication
line.
ECM
INFOID:0000000012200001
• ECM, when receiving A/C ON signal and blower fan ON signal from BCM, transmits A/C compressor request
signal to IPDM E/R via CAN communication according to status of the engine and refrigerant pressure.
• ECM transmits engine coolant temperature signal to A/C auto amp. via CAN communication line.
IPDM E/R
INFOID:0000000012200002
A/C relay is integrated in IPDM E/R. IPDM E/R operates A/C relay when A/C compressor request signal is
received from ECM via CAN communication line.
Ambient Sensor
INFOID:0000000012200003
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:0000000012200004
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:0000000012200005
Sunload sensor measures sunload amount. This sensor converts sunload amount to voltage signal by photo-
diode and transmits to A/C auto amp.
Refrigerant Pressure Sensor
INFOID:0000000012200006
DESCRIPTION
• The refrigerant pressure sensor converts high-pressure side refrigerant pressure into voltage and outputs it
to ECM.
• ECM operates cooler cycle protection and cooling fan speed control according to voltage value that is input.
STRUCTURE AND OPERATION
PBIB2657E
Revision: November 2015
2016 JUKE
COMPONENT PARTS
HAC-11
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
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• The refrigerant pressure sensor is a capacitance type sensor. It consists of a pressure detection ares 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.
Magnet Clutch
INFOID:0000000012200007
Compressor is driven by the magnet clutch which is magnetized by electric power supply.
Revision: November 2015
2016 JUKE
HAC-12
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
SYSTEM
SYSTEM
System Diagram
INFOID:0000000012200008
System Description
INFOID:0000000012200009
DESCRIPTION
• Automatic air conditioning system is controlled by each function of A/C auto amp., BCM, ECM and IPDM E/
R.
• Each operation of air conditioning system is transmitted from multi display unit via CAN communication. A/C
auto amp. transmits each type of indication information to multi display unit via CAN communication. Multi
display unit displays each type of indication information that is received.
CONTROL BY A/C AUTO AMP.
•
•
•
•
•
•
•
• Correction for input value
Ambient temperature correction
- The A/C auto amp. inputs the temperature detected with the ambient sensor as the ambient temperature.
JMIIA1049GB
Revision: November 2015
2016 JUKE
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