Qashqai J11. Heater & Air conditioning Control System

SYSTEM

HAC-33

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

HAC

NOTE:
When air conditioning system is OFF, it judges stop/start function is available at all times.

Stop/start Prohibition Condition Evaluated By A/C Auto Amp. (During Stop/start Operation)

During stop/start operation, when any of the following conditions is met, A/C auto amp. judges that stop/start
system operation is prohibited, cancels stop/start permit signal (inhibit), and requests ECM to restart engine.
• AUTO switch: Pressed
• A/C switch: Pressed.
• MAX DEF switch (for Europe and Russia) / DEF switch (except for Europe and Russia): Pressed [only when

ambient temperature is 25

C (77

F) or less]

• Passenger room temperature: Becomes 20

C (68

F) or less (when A/C switch is ON/OFF) or 30

C (86

F) or

more (only when A/C switch is ON)

• Evaporator temperature: Becomes 16

C (60.8

F) or more (only when A/C switch is ON)

A/C CONTROL DURING STOP/START OPERATION

During stop/start operation, A/C auto amp. changes air flow and control characteristics of air inlet within a
range that does not adversely affect the comfort level, prolongs stop/start operation time and reduces power
consumption for improving fuel economy. Refer to the following items for details of each control.

Air Flow Control

Air flow reduction control during stop/start operation

• A/C auto amp increases voltage to power transistor gate compared to ordinary operation and reduces volt-

age to blower motor. This reduces air flow.

• Due to reduced airflow, the amount of air that passes evaporator is reduced. Increase of evaporator temper-

ature can be moderated. This helps prevent a rise in evaporator temperature from meeting the stop/start
prohibition condition, prolonging stop/start operation time.

• Also, by decreasing the voltage applied to blower motor, power consumption is reduced. This moderates

alternator power output after engine is restarted.

NOTE:
When the fan switch is operated while stop/start is operating, the air flow changes to the setting from before
stop/start is activated. (The air flow indicator also changes in the same way.)

Air Inlet Control

Air inlet change control during stop/start operation

• A/C auto amp. increases recirculation air mixing ratio compared to ordinary operation.
• By increasing recirculation air mixing ratio, cooled air in passenger room is circulated in larger amount than

during ordinary operation and increase of evaporator temperature can be moderated. This helps prevent
stop/start prohibition condition (evaporator temperature) from being met and prolongs stop/start operation
time.

OPERATION

HAC-35

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

HAC

Fan switch

INTAKE switch

Temperature control dial [passenger
side (RHD models)/driver side (LHD
models)]

MAX DEF switch

A/C switch

AUTO switch

MODE DEF switch

MODE VENT switch

MODE FOOT switch

DUAL switch

Temperature control dial [driver side
(RHD models)/passenger side (LHD
models)]

ON·OFF switch

Switch name

Function

Fan switch

• Air flow can be set within a range between 1st – 7th speed according to switch operation.

- Press

(large): Air flow increases

- Press

(small):

Air flow decreases

• Air conditioning turns ON and operates according to the following status, when this switch is pressed

while air conditioning is OFF.

- Air outlet: Automatic control
- Air flow: 1st speed
- Air inlet: Settings set before this switch is pressed
- A/C switch: Settings set before air conditioning is turned OFF
NOTE:
Automatic air flow control is cancelled (AUTO switch indicator turns OFF), when fan switch is pressed
while AUTO switch indicator is ON.

INTAKE switch

Air inlet changes between recirculation (REC)

⇔

fresh air intake (FRE) each time this switch is pressed.

• Switch indicator lamp ON: Recirculation
• Switch indicator lamp OFF: Fresh air intake
NOTE:
Air inlet can be changed when front air conditioning is in OFF status.

Temperature control
dial (driver side)

• Setting temperature can be set according to dial operation within a range between 16.0

C – 30.0

C at

a rate of 0.5

C per adjustment.

- Clockwise: Setting temperature increases
- Counterclockwise: Setting temperature decreases
• If temperature control dial (driver side) is counterclockwise turned when temperature setting is 16.0

temperature setting indicates “Lo”. And air conditioning system operates following status.

- Air mix: Full cold
- Air outlet: Settings set before temperature setting is “Lo”
- Air flow: 7th speed
- Air inlet: REC
- A/C switch: ON
• If temperature control dial (driver side) is clockwise turned when temperature setting is 30.0

C, tem-

perature setting indicates “HI”. And air conditioning system operates following status.

- Air mix: Full hot
- Air outlet: Settings set before temperature setting is “HI”
- Air flow: 7th speed
- Air inlet: FRE
- A/C switch: Settings set before temperature setting is “HI”
NOTE:
When air conditioning is OFF, setting temperature can be set only while air conditioning status screen
(only when MODE switch is pressed) is indicated.

HAC-36

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

OPERATION

Temperature control
dial (passenger side)

• Left and right ventilation temperature separately control (DUAL switch indicator) turns ON according

to dial operation. Air flow temperature of passenger side can be changed without changing air flow
temperature of driver side.

• Setting temperature can be set according to dial operation within a range between 16.0

C – 30.0

C at

a rate of 0.5

C per adjustment.

- Clockwise: Setting temperature increases
- Counterclockwise: Setting temperature decreases
• If temperature control dial (passenger side) is counterclockwise turned when temperature setting is

16.0

C, temperature setting indicates “Lo”. And air mix setting is set to full cold.

• If temperature control dial (passenger side) is clockwise turned when temperature setting is 30.0

temperature setting indicates “HI”. And air mix setting is set to full hot.

NOTE:
When air conditioning is OFF, setting temperature can be set only while air conditioning status screen
(only when MODE switch is pressed) is indicated.

MAX DEF switch

MAX DEF mode (switch indicator) changes between ON

⇔

OFF each time switch is pressed.

• When this switch is pressed while air conditioning is ON
- Air conditioning becomes the following status when DEF mode is turned ON.
• Air outlet: DEF
• Air flow: Maximum setting
• Air inlet: Fresh air intake
• A/C switch: ON
- Air conditioning becomes the following status when DEF mode is turned OFF.
• Air outlet: Settings set before DEF mode is turned ON
• Air flow: Settings set before DEF mode is turned ON
• Air inlet: Settings set before DEF mode is turned ON
• A/C switch: Settings set before DEF mode is turned ON
• When this switch is pressed while air conditioning is OFF
- Air conditioning turns ON and operates in the following status, when DEF mode is turned ON.
• Air outlet: DEF
• Air flow: Maximum setting
• Air inlet: Fresh air intake
• A/C switch: ON
- Air conditioning becomes the following status when DEF mode is turned OFF.
• Air outlet: Automatic control
• Air flow: Automatic control
• Air inlet: Automatic control
• A/C switch: Settings set before DEF mode is turned OFF
NOTE:
When DEF mode is turned ON while AUTO switch indicator is turned ON, AUTO switch indicator turns
OFF. However, automatic air flow control continues.

A/C switch

Compressor control (switch indicator) changes between ON

⇔

OFF each time this switch is pressed

while blower motor is operated.
NOTE:
A/C switch cannot be turned ON when blower motor is OFF.

AUTO switch

• AUTO switch indicator turns ON and air conditioning becomes the following status, when this switch is

pressed while air conditioning is ON.

- Air outlet: Automatic control
- Air flow: Automatic control
- Air inlet: Automatic control
- A/C switch: Settings set before this switch is pressed
• Air conditioning turns ON and operates according to the following status, when this switch is pressed

while air conditioning is OFF. (AUTO switch indicator turns ON)

- Air outlet: Automatic control
- Air flow: Automatic control
- Air inlet: Automatic control
- A/C switch: Settings set before this switch is pressed
NOTE:
When air outlet or air flow is manually operated while AUTO switch indicator is ON, AUTO switch indica-
tor turns OFF. However, automatic control continues for other functions than air outlet or air flow.

Switch name

Function

OPERATION

HAC-37

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

HAC

MODE DEF switch

• Air outlet changes to DEF when this switch is pressed while air conditioning is ON and air outlet con-

dition is automatic control.

• Air outlet changes as following when this switch is pressed while air conditioning is ON and air outlet

condition is manual control.

- V/D

⇒

VENT

- VENT

⇒

V/D

- B/L

⇒

ALL

- ALL

⇒

B/L

- FOOT

⇒

D/F

- D/F

⇒

FOOT

- DEF

⇒

Automatic control

- Automatic control (MODE DEF/VENT/FOOT switch indicator is not illuminated)

⇒

DEF

• When this switch is pressed while air conditioning is ON and MODE DEF is ON, air outlet control is

changed to automatic control.

• When this switch is pressed while air conditioning is OFF, Air conditioning becomes the following status
- Air outlet: DEF
- Air flow: Minimum setting
- Air inlet: Settings set before air conditioning is turned OFF
- A/C switch: Settings set before air conditioning is turned OFF
• When this switch is pressed while MAX DEF is ON, Air conditioning becomes the following status
- Air outlet: DEF
- Air flow: Settings set before MAX DEF is turned ON*
- Air inlet: Settings set before MAX DEF is turned ON*
- A/C switch: Settings set before MAX DEF is turned ON*
NOTE:
• Automatic air outlet control is cancelled (AUTO switch indicator turns OFF), when MODE DEF switch

is pressed while AUTO switch indicator is ON.

• *: When MAX DEF is turned ON from air conditioning OFF status, each settings are set before air con-

ditioning is turned OFF.

MODE VENT switch

• Air outlet changes to VENT when this switch is pressed while air conditioning is ON and air outlet con-

dition is automatic control.

• Air outlet changes as following when this switch is pressed while air conditioning is ON and air outlet

condition is manual control.

- V/D

⇒

DEF

- VENT

⇒

Automatic control

- B/L

⇒

FOOT

- ALL

⇒

D/F

- FOOT

⇒

B?L

- D/F

⇒

ALL

- DEF

⇒

V/D

- Automatic control (MODE DEF/VENT/FOOR switch indicator is not illuminated)

⇒

VENT

• When this switch is pressed while air conditioning is ON and MODE VENT is ON, air outlet control is

changed to automatic control.

• When this switch is pressed while air conditioning is OFF, Air conditioning becomes the following status
- Air outlet: VENT
- Air flow: Minimum setting
- Air inlet: Settings set before air conditioning is turned OFF
- A/C switch: Settings set before air conditioning is turned OFF
• When this switch is pressed while MAX DEF is ON, Air conditioning becomes the following status
- Air outlet: VENT
- Air flow: Settings set before MAX DEF is turned ON*
- Air inlet: Settings set before MAX DEF is turned ON*
- A/C switch: Settings set before MAX DEF is turned ON*
NOTE:
• Automatic air outlet control is cancelled (AUTO switch indicator turns OFF), when MODE VENT switch

is pressed while AUTO switch indicator is ON.

• *: When MAX DEF is turned ON from air conditioning OFF status, each settings are set before air con-

ditioning is turned OFF.

Switch name

Function

HAC-38

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

OPERATION

OPERATION AND DISPLAY OF AUTOMATIC AIR CONDITIONING SYSTEM (EXCEPT FOR EU-
ROPE AND RUSSIA)

Display: Display in A/C control

• Air conditioning operation status is indicated on display in A/C control.
• Air conditioning status display screen is indicated when MODE switch is pressed while air conditioning is

OFF.

Operation: A/C control

MODE FOOT switch

• Air outlet changes to FOOT when this switch is pressed while air conditioning is ON and air outlet con-

dition is automatic control.

• Air outlet changes as following when this switch is pressed while air conditioning is ON and air outlet

condition is manual control.

- V/D

⇒

ALL

- VENT

⇒

B/L

- B/L

⇒

VENT

- ALL

⇒

V/D

- FOOT

⇒

Automatic control

- D/F

⇒

DEF

- DEF

⇒

D/F

- Automatic control (MODE DEF/VENT/FOOR switch indicator is not illuminated)

⇒

FOOT

• When this switch is pressed while air conditioning is ON and MODE FOOT is ON, air outlet control is

changed to automatic control.

• When this switch is pressed while air conditioning is OFF, Air conditioning becomes the following status
- Air outlet: FOOT
- Air flow: Minimum setting
- Air inlet: Settings set before air conditioning is turned OFF
- A/C switch: Settings set before air conditioning is turned OFF
• When this switch is pressed while MAX DEF is ON, Air conditioning becomes the following status
- Air outlet: FOOT
- Air flow: Settings set before MAX DEF is turned ON*
- Air inlet: Settings set before MAX DEF is turned ON*
- A/C switch: Settings set before MAX DEF is turned ON*
NOTE:
• Automatic air outlet control is cancelled (AUTO switch indicator turns OFF), when MODE FOOT switch

is pressed while AUTO switch indicator is ON.

• *: When MAX DEF is turned ON from air conditioning OFF status, each settings are set before air con-

ditioning is turned OFF.

DUAL switch

Left and right ventilation temperature separately control (switch indicator) changes between ON

⇔

OFF

each time this switch is pressed while blower motor is operated.
NOTE:
• Setting temperature for passenger side is the same as that for driver side when left and right ventilation

temperature separately control is OFF.

• DUAL switch operation is not accepted when DEF mode is ON.

ON·OFF switch

Air conditioning turns ON

⇔

OFF each time this switch is pressed.

• When this switch is pressed while air conditioning is ON
- Air conditioning turns OFF and becomes the following status, when this switch is pressed.
• Air outlet: FOOT
• Air flow: OFF
• Air inlet: FRE
• A/C switch: OFF
• When this switch is pressed while air conditioning is OFF
- Air conditioning turns ON and operates according to the settings set before air conditioning is turned

OFF, when this switch is pressed.

Switch name

Function

OPERATION

HAC-39

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

HAC

Fan switch

MODE switch

Temperature control dial [passenger
side (RHD models)/driver side (LHD
models)]

DEF switch

ON·OFF switch

REC switch

AUTO switch

FRE switch

DUAL switch

Temperature control dial [driver side
(RHD models)/passenger side (LHD
models)]

A/C switch

Switch name

Function

Fan switch

• Air flow can be set within a range between 1st – 7th speed according to switch operation.

- Press

(large): Air flow increases

- Press

(small):

Air flow decreases

• Air conditioning turns ON and operates according to the following status, when this switch is pressed

while air conditioning is OFF.

MODE switch

Air outlet changes from VENT

⇒

B/L

⇒

FOOT

⇒

D/F

⇒

VENT each time this switch is pressed.

NOTE:
• Air outlet can be changed when air conditioning is in OFF status.
• Automatic air outlet control is cancelled (AUTO switch indicator turns OFF), when MODE switch is

pressed while AUTO switch indicator is ON.

Temperature control
dial (driver side)

Setting temperature can be set according to dial operation within a range between 18.0

C – 32.0

C at a

rate of 0.5

C per adjustment.

• Clockwise: Setting temperature increases
• Counterclockwise: Setting temperature decreases
NOTE:
When air conditioning is OFF, setting temperature can be set only while air conditioning status screen
(only when MODE switch is pressed) is indicated.

JMIIA3338ZZ

HAC-40

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

OPERATION

Temperature control
dial (passenger side)

• Left and right ventilation temperature separately control (DUAL switch indicator) turns ON according

to dial operation. Air flow temperature of passenger side can be changed without changing air flow
temperature of driver side.

• Setting temperature can be set according to dial operation within a range between 18.0

C – 32.0

C at

a rate of 0.5

C per adjustment.

- Clockwise: Setting temperature increases
- Counterclockwise: Setting temperature decreases
NOTE:
• When air conditioning is OFF, setting temperature can be set only while air conditioning status screen

(only when MODE switch is pressed) is indicated.

• Temperature control dial (passenger side) operation is not accepted when DEF mode is ON.

DEF switch

DEF mode (switch indicator) changes between ON

⇔

OFF each time switch is pressed.

• When this switch is pressed while air conditioning is ON
- Air conditioning becomes the following status when DEF mode is turned ON.
• Air outlet: DEF
• Air flow: Automatic control
• Air inlet: Fresh air intake
• A/C switch: ON
- Air conditioning becomes the following status when DEF mode is turned OFF.
• Air outlet: Settings set before DEF mode is turned ON
• Air flow: Settings set before DEF mode is turned ON
• Air inlet: Settings set before DEF mode is turned ON
• A/C switch: Settings set before DEF mode is turned ON
• When this switch is pressed while air conditioning is OFF
- Air conditioning turns ON and operates in the following status, when DEF mode is turned ON.
• Air outlet: DEF
• Air flow: Automatic control
• Air inlet: Fresh air intake
• A/C switch: ON
- Air conditioning becomes the following status when DEF mode is turned OFF.
• Air outlet: Settings set before DEF mode is turned ON
• Air flow: OFF
• Air inlet: Settings set before DEF mode is turned ON
• A/C switch: OFF
NOTE:
When DEF mode is turned ON while AUTO switch indicator is turned ON, AUTO switch indicator turns
OFF. However, automatic air flow control continues.

ON·OFF switch

Air conditioning turns ON

⇔

OFF each time this switch is pressed.

OFF, when this switch is pressed.

REC switch

Switch indicator turns ON and air inlet is set to recirculation (REC), when this switch is pressed.
NOTE:
• Air inlet can be changed when air conditioning is in OFF status.
• When REC indicator is ON, pressing the REC switch for approximately 2 seconds or more, and then

the FRE and REC switch indicators blink twice and the system is switched to the automatic control.

Switch name

Function

OPERATION

HAC-41

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

HAC

AUTO switch

• AUTO switch indicator turns ON and air conditioning becomes the following status, when this switch is

pressed while air conditioning is ON.

while air conditioning is OFF. (AUTO switch indicator turns ON)

FRE switch

Switch indicator turns ON and air inlet is set to fresh air intake (FRE), when this switch is pressed.
NOTE:
Air inlet can be changed when air conditioning is in OFF status.
When FRE indicator is ON, pressing the FRE switch for approximately 2 seconds or more, and then the
FRE and REC switch indicators blink twice and the system is switched to the automatic control.

DUAL switch

Left and right ventilation temperature separately control (switch indicator) changes between ON

⇔

OFF

each time this switch is pressed while blower motor is operated.
NOTE:
• Setting temperature for passenger side is the same as that for driver side when left and right ventilation

temperature separately control is OFF.

• DUAL switch operation is not accepted when DEF mode is ON.

A/C switch

Compressor control (switch indicator) changes between ON

⇔

OFF each time this switch is pressed

while blower motor is operated.
NOTE:
A/C switch cannot be turned ON when blower motor is OFF.

Switch name

Function

HAC-42

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

DIAGNOSIS SYSTEM (A/C AUTO AMP.)

DIAGNOSIS SYSTEM (A/C AUTO AMP.)

Description

INFOID:0000000010432181

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

CONSULT Function

INFOID:0000000010432182

CONSULT performs the following functions via CAN communication with A/C auto amp.

NOTE:
Diagnosis should be performed with engine running. Door motor operation speeds become slower and NO
results may be returned even for normal operation if battery voltage drops below 12 V during self-diagnosis.

ECU IDENTIFICATION

Part number of A/C auto amp. can be checked.

SELF-DIAGNOSIS RESULTS

Diagnosis result that is judged by A/C auto amp. can be checked. Refer to

HAC-53, "DTC Index"

DATA MONITOR

Input/output signal of A/C auto amp. can be checked.
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

ECU

Diagnostic item

(CONSULT)

A/C auto amp.

HVAC

Self Diagnostic Result

Data Monitor

Active Test

Work support

BCM

BCM-AIR CONDITIONER

Self Diagnostic Result

Data Monitor

ECM

ENGINE

Self Diagnostic Result

Data Monitor

IPDM E/R

Self Diagnostic Result

Data Monitor

Auto active test

Diagnostic mode

Description

Ecu Identification

Displays the part number of A/C auto amp.

Self Diagnostic Result

Displays the diagnosis results judged by A/C auto amp.

Data Monitor

Displays the input/output signal of A/C auto amp.

Active Test

The signals used to activate each device are forcibly supplied from A/C auto amp.

Work support

Changes the setting for each setting function and performs automatic adjustment of
components.

Monitor item [Unit]

Description

AMB TEMP SEN

[

C (

F)]

Ambient temperature value converted from ambient temperature signal received from
combination meter via CAN communication.

IN-VEH TEMP

[

C (

F)]

In-vehicle temperature value converted from in-vehicle sensor signal received from in-
vehicle sensor.

DIAGNOSIS SYSTEM (A/C AUTO AMP.)

HAC-43

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

HAC

ACTIVE TEST

The signals used to activate each device forcibly supplied from A/C auto amp. operation check of air condi-
tioning system can be performed.

Check each output device

NOTE:
Perform the inspection of each output device after starting the engine because the compressor is operated.

WORK SUPPORT

Setting change of each setting functions and automatic adjustment of components can be performed.

INT TEMP SEN

[

C (

F)]

Evaporator fin temperature value converted from intake sensor signal received from in-
take sensor.

SUNLOAD SEN

[w/m

]

Sunload value converted from sunload sensor signal received from sunload sensor

AMB SEN CAL

[

C (

F)]

Ambient temperature value calculated by A/C auto amp.

IN-VEH CAL

[

C (

F)]

In-vehicle temperature value calculated by A/C auto amp.

INT TEMP CAL

[

C (

F)]

Evaporator fin temperature value calculated by A/C auto amp.

SUNL SEN CAL

[w/m

]

Sunload value calculated by A/C auto amp.

COMP REQ SIG

[On/Off]

Displays A/C ON signal ON/OFF status transmitted to ECM.

COMP ECV DUTY

[%]

Duty ratio of ECV (electrical control valve) judged by A/C auto amp.

FAN REQ SIG

[On/Off]

Displays blower fan ON signal ON/OFF status transmitted to ECM.

FAN DUTY

Target duty ratio of voltage (applied voltage) applied to blower motor by A/C auto amp.

Target discharge air temperature (driver side) judged by A/C auto amp. depending on
the temperature setting and the value from each sensor.

ENG COOL TEMP

[

C (

F)]

Engine coolant temperature signal value received from ECM via CAN communication.

VEHICLE SPEED

[km/h

(mph)]

Vehicle speed signal value received from combination meter via CAN communication.

Monitor item [Unit]

Description

Test item

Description

HVAC TEST

The operation check of air conditioning system can be performed by selecting the mode.
Refer to the following table for the conditions of each mode.

Test item

MODE 1

MODE 2

MODE 3

MODE 4

MODE 5

MODE 6

MODE 7

Mode door motor position

VENT

B/L

FOOT

D/F

DEF

Intake door motor position

REC

20% FRE

FRE

Air mix door motor (driver side)
position

FULL COLD

FULL HOT

Air mix door motor (passenger
side) position

FULL COLD

FULL HOT

Blower motor (Duty ratio)

35%

60%

90%

35%

Magnet clutch

OFF

ECV duty ratio

80%

40%

70%

Work item

Description

Refer to

TEMP SET CORRECT

Setting change of temperature setting trimmer can be performed.

HAC-77, "Temperature
Setting Trimmer"

REC MEMORY SET

Setting change of inlet port memory function (REC) can be per-
formed.

HAC-77, "Inlet Port Mem-
ory Function (REC)"

FRE MEMORY SET

Setting change of inlet port memory function (FRE) can be per-
formed.

HAC-78, "Inlet Port Mem-
ory Function (FRE)"

DIAGNOSIS SYSTEM (A/C CONTROL)

HAC-45

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

HAC

DIAGNOSIS SYSTEM (A/C CONTROL)

Diagnosis Description

INFOID:0000000010499350

DESCRIPTION

On board diagnosis of A/C control can be used to perform an operation check of the segment display and indi-
cator lamps.

STARTING PROCEDURE

Starting Self-diagnosis Mode

Ignition switch turns OFF, and stand by 3 minutes after the driver side door is opened.
NOTE:
Accessory power supply may be supplied if vehicle is operated during standby.

The self-diagnosis function starts when the ON·OFF switch is pressed for 5 seconds or more within 10
seconds after the ignition switch turns ON.

Ending Self-diagnosis Mode

Turn ignition switch OFF and accessory power supply OFF by AUTO ACC function, or press AUTO switch.
NOTE:
For details of AUTO ACC function, refer to

PCS-75, "AUTO ACC FUNCTION : System Description"

DIAGNOSIS DESCRIPTION

Check indicators of all A/C control switches and check all liquid crystal display segments.
When normal: All display parts and indicator lamps on A/C controller turn ON.
Malfunction: The malfunctioning part does not turn ON, or does not display. (A/C controller malfunction)
NOTE:
If on board diagnosis does not start, check A/C control power supply and the ground circuit. Refer to

HAC-108,

"A/C CONTROL : Diagnosis Procedure"

. If the result of the check is normal, replace A/C control. Refer to

HAC-128, "Removal and Installation"

HAC-46

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

DIAGNOSIS SYSTEM (BCM)

DIAGNOSIS SYSTEM (BCM)

COMMON ITEM

COMMON ITEM : CONSULT Function (BCM - COMMON ITEM)

INFOID:0000000010916206

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

FREEZE FRAME DATA (FFD)

The BCM records the following vehicle condition at the time a particular DTC is detected, and displays on
CONSULT.

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

Exterior lamp

HEAD LAMP

Interior room lamp control

INT LAMP

Wiper and washer

WIPER

Turn signal and hazard warning lamps

FLASHER

PTC heater control

AIR CONDITONER

Intelligent Key system

INTELLIGENT KEY

Combination switch

COMB SW

Body control system

BCM

NVIS - NATS

IMMU

Interior room lamp battery saver

BATTERY SAVER

Back door open

TRUNK

Vehicle security

THEFT ALM

RAP

RETAINED PWR

Remote keyless entry system

MULTI REMOTE ENT

Signal buffer system

SIGNAL BUFFER

DIAGNOSIS SYSTEM (BCM)

HAC-47

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

HAC

AIR CONDITIONER

AIR CONDITIONER : CONSULT Function (BCM - AIR CONDITIONER)

INFOID:0000000010432184

ACTIVE TEST

CONSULT screen item

Indication/Unit

Description

BATTERY VOLTAGE

Battery voltage of the moment a particular DTC is detected.

VEHICLE SPEED

km/h

Vehicle speed of the moment a particular DTC is detected.

EXTERNAL TEMP

External temperature of the moment a particular DTC is detected

VEHICLE COND

—

NOTE:
This item is displayed, but cannot be use this item.

DOOR LOCK STATUS

—

NOTE:
This item is displayed, but cannot be use this item.

POWER SUPPLY
COUNTER

min

Displays the cumulative time from the time that the battery terminal is connected.

Test item

Operation

Description

PTC RELAY-1

Off/On

PTC RELAY-1 is turned OFF/ON.

PTC RELAY-2

Off/On

PTC RELAY-2 is turned OFF/ON.

PTC RELAY-3

Off/On

PTC RELAY-3 is turned OFF/ON.

HAC-48

< ECU DIAGNOSIS INFORMATION >

[AUTOMATIC AIR CONDITIONING]

A/C AUTO AMP.

ECU DIAGNOSIS INFORMATION

A/C AUTO AMP.

Reference Value

INFOID:0000000010432185

CONSULT DATA MONITOR REFERENCE VALUES

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

TERMINAL LAYOUT

Monitor item

Condition

Value/Status

AMB TEMP SEN

Ignition switch ON

Equivalent to ambient tem-
perature

IN-VEH TEMP

Ignition switch ON

Equivalent to in-vehicle tem-
perature

INT TEMP SEN

Ignition switch ON

Values depending on evapo-
rator fin temperature

SUNLOAD SEN

Ignition switch ON

Values depending on sun-
load amount

AMB SEN CAL

Ignition switch ON

Equivalent to ambient tem-
perature

IN-VEH CAL

Ignition switch ON

Equivalent to in-vehicle tem-
perature

INT TEMP CAL

Ignition switch ON

Values depending on evapo-
rator fin temperature

SUNL SEN CAL

Ignition switch ON

Values depending on sun-
load amount

COMP REQ SIG

Engine: Run at idle after
warming up

A/C switch: ON
(Compressor operation sta-
tus)

A/C switch: OFF

Off

COMP ECV DUTY

Engine: Run at idle after
warming up

A/C switch: ON
(Compressor operation sta-
tus)

1 - 100%

A/C switch: OFF

FAN REQ SIG

Engine: Run at idle after
warming up

Blower motor: ON

Blower motor: OFF

Off

FAN DUTY

Engine: Run at idle after
warming up

Blower motor: ON

1 – 100

Blower motor: OFF

Ignition switch ON

Value depending on target
air flow temperature (driver
side)

ENG COOL TEMP

Ignition switch ON

Values depending on engine
coolant temperature

VEHICLE SPEED

Turn drive wheels and compare CONSULT value with the
speedometer indication.

Equivalent to speedometer
reading

Qashqai J11. Heater & Air conditioning Control System - part 3