Nissan Juke (2014 year). Service Repair Manual

COMPONENT PARTS

HAC-101

< SYSTEM DESCRIPTION >

[MANUAL AIR CONDITIONING]

HAC

SYSTEM DESCRIPTION

COMPONENT PARTS

Component Part Location

INFOID:0000000009754403

Component Description

INFOID:0000000009754404

BCM
Refer to

BCS-93, "BODY CONTROL

SYSTEM : Component Parts Loca-
tion"

Magnet clutch

Refrigerant pressure sensor

ECM
Refer to

EC-14, "ENGINE CON-

TROL SYSTEM :
Component Parts Location"

IPDM E/R
Refer to

PCS-37, "Component Parts

Location"

A/C control

Thermo control amp.

Blower fan resistor

Blower motor

Left side of A/C unit assembly

Back side of A/C unit assembly

Right side of A/C unit assembly

JMIIA1052ZZ

Component

Description

A/C unit assembly

Thermo control amp.

Blower motor

Blower fan resistor

A/C control

BCM

ECM

Revision: 2013 October

2014 JUKE

HAC-102

< SYSTEM DESCRIPTION >

[MANUAL AIR CONDITIONING]

COMPONENT PARTS

A/C UNIT ASSEMBLY

A/C UNIT ASSEMBLY : Thermo Control Amp.

INFOID:0000000009754405

• Thermo control amp. is composed of thermistor and amplifier. Thermistor is installed on evaporator, and

amplifier is attached to foot duct.

• When the thermistor detecting temperature of the evaporator fin is extremely low, thermo control amp. sends

the thermo control amp. OFF signal to BCM, and stops the compressor.

A/C UNIT ASSEMBLY : Blower Motor

INFOID:0000000009754406

• 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 : Blower Fan Resistor

INFOID:0000000009754407

• Compact and lightweight resistor is adopted with outstanding venti-

lation.

• Temperature fuse is installed to protects the blower motor circuit.

A/C Control

INFOID:0000000009754408

Controls the air conditioning function.

IPDM E/R

HAC-103

Refrigerant pressure sensor

HAC-103

Magnet clutch

HAC-103

Component

Description

JPIIA1575ZZ

ZHA152H

ZJIA0545J

Revision: 2013 October

2014 JUKE

COMPONENT PARTS

HAC-103

< SYSTEM DESCRIPTION >

[MANUAL AIR CONDITIONING]

HAC

BCM

INFOID:0000000009754409

BCM transmits A/C ON signal and blower fan ON signal to ECM via CAN communication, according to A/C
switch signal and blower fan ON signal that are received from A/C control and thermo control amp. signal that
is received from thermo control amp. At this moment, BCM turns A/C indicator ON.

ECM

INFOID:0000000009754410

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.

IPDM E/R

INFOID:0000000009754411

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.

Refrigerant Pressure Sensor

INFOID:0000000009754412

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

• 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:0000000009754413

Compressor is driven by the magnet clutch which is magnetized by electric power supply.

PBIB2657E

Revision: 2013 October

2014 JUKE

HAC-104

< SYSTEM DESCRIPTION >

[MANUAL AIR CONDITIONING]

SYSTEM

SYSTEM

System Diagram

INFOID:0000000009754414

System Description

INFOID:0000000009754415

DESCRIPTION

• Manual air conditioning system is controlled by each function of thermo control amp., BCM, ECM and IPDM

E/R.

• Fan speed of blower motor is changed by the combination of fan control dial operation and blower fan resis-

tor control.

CONTROL BY THERMO CONTROL AMP.

HAC-104, "Compressor Control"

CONTROL BY BCM

HAC-104, "Compressor Control"

CONTROL BY ECM

•

HAC-104, "Compressor Control"

• Cooling fan control: Refer to

EC-52, "COOLING FAN CONTROL : System Description"

CONTROL BY IPDM E/R

•

HAC-104, "Compressor Control"

• Cooling fan control: Refer to

PCS-40, "POWER CONTROL SYSTEM : System Description"

Compressor Control

INFOID:0000000009754416

DESCRIPTION

• BCM transmits the A/C ON signal and blower fan ON signal to ECM via CAN communication line only when

the compressor operational condition is satisfied, and A/C indicator is turned ON.
Refer to

BCS-99, "SIGNAL BUFFER SYSTEM : System Description"

NOTE:
Compressor operational condition
• A/C switch signal ON or defroster position signal ON

JMIIA1241GB

Revision: 2013 October

2014 JUKE

SYSTEM

HAC-105

< SYSTEM DESCRIPTION >

[MANUAL AIR CONDITIONING]

HAC

• Blower fan ON signal: ON
• Thermo control amp. signal: ON

• ECM judges the conditions of each sensor (Refrigerant pressure sensor signal, accelerator position signal,

etc.), and transmits the A/C compressor request signal to IPDM E/R via CAN communication line.

• By receiving the A/C compressor request signal from ECM, IPDM E/R turns the A/C relay to ON, and acti-

vates the compressor.
Refer to

PCS-38, "RELAY CONTROL SYSTEM : System Description"

CONTROL BY THERMO CONTROL AMP.

Low Temperature Protection Control

• When the thermo control amp. detects that evaporator fin tempera-

ture is 2

C (36

F) or less, thermo control amp. signal becomes

OFF, and stops the compressor.

• When the air temperature returns to 3.5

C (38

F) or more, the

compressor is activated.

Operating Rate Control

• Thermo control amp. detects the positions of temperature control dial (air mix PBR) and MODE dial (MODE

switch).

• Thermo control amp. corrects the stopping temperature of A/C compressor depending on the condition of A/

C operation, and prevents too much heating by turning thermo control amp. signal ON

⇔

OFF.

CONTROL BY ECM

Compressor Protection Control at Pressure Malfunction

When the high-pressure side value that is detected by refrigerant pressure sensor is as per the following state,
ECM requests IPDM E/R to turn A/C relay OFF and stops the compressor.
• 3.12 MPa (31.82 kg/cm

, 452.4 psi) or more (When the engine speed is less than 1,500 rpm)

• 2.74 MPa (27.95 kg/cm

, 397.3 psi) or more (When the engine speed is 1,500 rpm or more)

• 0.14 MPa (1.43 kg/cm

, 20.3 psi) or less

Compressor Oil Circulation Control

When the engine starts while the engine coolant temperature is 56

C (133

F) or less, ECM activates the com-

pressor for approximately 6 seconds and circulates the compressor oil once.

Air Conditioning Cut Control

When the engine condition is high load, ECM transmit A/C relay OFF request to IPDM E/R, and stops the
compressor.
Refer to

EC-50, "AIR CONDITIONING CUT CONTROL : System Description"

Door Control

INFOID:0000000009754417

SWITCHES AND THEIR CONTROL FUNCTIONS

JMIIA1055GB

Revision: 2013 October

2014 JUKE

HAC-106

< SYSTEM DESCRIPTION >

[MANUAL AIR CONDITIONING]

SYSTEM

*: Models for Canada

Intake door

Blower motor

Air conditioner filter

Evaporator

Upper air mix door

Lower air mix door

Heater core

Foot door

Side ventilator door

10. Sub defroster door

11.

Center ventilator and defroster door

Fresh air intake

Recirculation air

Defroster

Center ventilator

Side ventilator

Foot

Rear foot

JPIIA1584ZZ

Revision: 2013 October

2014 JUKE

SYSTEM

HAC-107

< SYSTEM DESCRIPTION >

[MANUAL AIR CONDITIONING]

HAC

AIR DISTRIBUTION

Models except for Canada

Models for Canada

Dial/Lever position

Door position

r v

til

r a

ost

fros

r do

til

ot doo

r a

ir m

Lowe

r a

ir m

MODE dial

—

Intake lever

—

Temperature control dial

Full cold

—

Full hot

Discharge air flow

MODE dial position

Air outlet/distribution

Ventilator

Foot

Defroster

Center

Side

52.6%

47.3%

—

34.0%

27.7%

38.4%

—

19.1%

57.9%

23.0%

—

13.5%

42.4%

44.1%

—

16.3%

—

83.8%

Discharge air flow

MODE dial position

Air outlet/distribution

Ventilator

Foot

Defroster

Center

Side

Front

Rear

52.6%

47.3%

—

28.2%

25.9%

29.6%

16.3%

—

16.3%

43.0%

21.0%

19.7%

—

12.2%

33.1%

16.3%

38.4%

—

16.3%

—

83.8%

Revision: 2013 October

2014 JUKE

HAC-108

< SYSTEM DESCRIPTION >

[MANUAL AIR CONDITIONING]

OPERATION

OPERATION

Switch Name and Function

INFOID:0000000009754418

A/C CONTROLLER (A/C CONTROL)

MODE dial

Fan control dial

A/C switch

Temperature control dial

Intake lever

MODE dial

• Mode position is selected to an optimal position by operating this dial.
• When D/F or DEF is selected while blower motor is activated, the compressor automatically turns

ON.

NOTE:
A/C switch (compressor control) is turned ON when D/F or DEF is selected while A/C switch indicator
is OFF, but A/C switch indicator is not illuminated.

Fan control dial

Fan speed can be adjusted within a range from 1st to 4th.

A/C switch

The compressor control (A/C switch indicator) is turned ON

⇔

OFF each time by pressing this switch

while the blower motor is activated.
NOTE:
A/C switch (compressor control) is turned ON when D/F or DEF is selected while A/C switch indicator
is OFF, but A/C switch indicator is not illuminated.

Temperature control dial

The setting temperature can be selected to an optimum temperature by operating this dial.
• Clockwise rotation: Discharge air flow temperature increases
• Counterclockwise rotation: Discharge air flow temperature decreases.

Intake lever

The air inlet changes REC

⇔

FRE each time by operation this lever.

JMIIA1242ZZ

Revision: 2013 October

2014 JUKE

DIAGNOSIS SYSTEM (BCM)

HAC-109

< SYSTEM DESCRIPTION >

[MANUAL AIR CONDITIONING]

HAC

DIAGNOSIS SYSTEM (BCM)

Description

INFOID:0000000009754419

Air conditioning system performs self-diagnosis, operation check, function diagnosis, and various settings
using diagnosis function of each control unit.

COMMON ITEM

COMMON ITEM : CONSULT Function (BCM - COMMON ITEM)

INFOID:0000000009754420

APPLICATION ITEM

CONSULT performs the following functions via CAN communication with BCM.

SYSTEM APPLICATION

BCM can perform the following functions for each system.
NOTE:
It can perform the diagnosis modes except the following for all sub system selection items.

: Applicable item

ECU

Diagnostic item

(CONSULT)

BCM

BCM-AIR CONDITIONER

Self Diagnostic Result

Data Monitor

Active Test

ECM

ENGINE

Self Diagnostic Result

Data Monitor

IPDM E/R

Self Diagnostic Result

Data Monitor

Auto active test

Diagnosis mode

Function Description

Work Support

Changes the setting for each system function.

Self Diagnostic Result

Displays the diagnosis results judged by BCM.

CAN Diag Support Monitor

Monitors the reception status of CAN communication viewed from BCM.

Data Monitor

The BCM input/output signals are displayed.

Active Test

The signals used to activate each device are forcibly supplied from BCM.

Ecu Identification

The BCM part number is displayed.

Configuration

• Read and save the vehicle specification.
• Write the vehicle specification when replacing BCM.

System

Sub system selection item

Diagnosis mode

Work Support

Data Monitor

Active Test

Door lock

DOOR LOCK

Rear window defogger

REAR DEFOGGER

Warning chime

BUZZER

Interior room lamp control

INT LAMP

Remote keyless entry system

MULTI REMOTE ENT

Exterior lamp

HEAD LAMP

Wiper and washer

WIPER

Turn signal and hazard warning lamps

FLASHER

Air conditioning system

AIR CONDITONER

Combination switch

COMB SW

Revision: 2013 October

2014 JUKE

HAC-110

< SYSTEM DESCRIPTION >

[MANUAL AIR CONDITIONING]

DIAGNOSIS SYSTEM (BCM)

AIR CONDITIONER

AIR CONDITIONER : CONSULT Function (BCM - AIR CONDITIONER) (Manual A/C)

INFOID:0000000009754421

DATA MONITOR

NOTE:
The following table includes information (items) inapplicable to this vehicle. For information (items) applicable
to this vehicle, refer to CONSULT display items.

Display item list

ACTIVE TEST

Body control system

BCM

NATS

IMMU

Interior room lamp battery saver

BATTERY SAVER

Back door open

TRUNK

Theft warning alarm

THEFT ALM