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Nissan Juke (2016 year). Service Repair Manual - part 421

PRECAUTIONS

HAC-5

< PRECAUTION >

[AUTOMATIC AIR CONDITIONING]

HAC

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]

HAC

SYSTEM DESCRIPTION

COMPONENT PARTS

Component Parts Location

INFOID:0000000012199989

BCM
Refer to

BCS-5, "BODY CONTROL

SYSTEM : Component Parts Loca-
tion"

Magnet clutch

Refrigerant pressure sensor

Ambient sensor

ECM
Refer to

EC-27, "ENGINE CON-

TROL SYSTEM :
Component Parts Location"

IPDM E/R
Refer to

PCS-5, "Component Parts

Location"

Multi display unit

Intake door motor

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

HAC-16, "Door Control"

• 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.

Left side of A/C unit assembly

Instrument lower panel LH is re-
moved

Back side of A/C unit assembly

Multi display unit is removed

Right side of A/C unit assembly

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

HAC-10

Magnet clutch

HAC-11

RJIA1804E

Revision: November 2015

2016 JUKE

COMPONENT PARTS

HAC-9

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

HAC

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

HAC-16, "Door Control"

• 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

HAC-16, "Door Control"

• 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]

HAC

• 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/

• 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.

•

HAC-13, "Temperature Control"

•

HAC-14, "Air Outlet Control"

•

HAC-14, "Air Flow Control"

•

HAC-15, "Air Inlet Control"

•

HAC-15, "Compressor Control"

•

HAC-16, "Door Control"

•

HAC-19, "ECO Mode Control"

• 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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