Nissan Qashqai J11. Manual — part 1099
HAC-32
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
SYSTEM
STOP/START SYSTEM : System Description
INFOID:0000000010499353
SYSTEM DIAGRAM
DESCRIPTION
• In the stop/start system, ECM performs integrated control based on the information from control units, sen-
sors and switches. For details, refer to
ECH-35, "STOP/START SYSTEM : System Description"
engine models),
ECM-79, "STOP/START SYSTEM : System Description"
39, "STOP/START SYSTEM : System Description"
: System Description (M/T models)"
(R9M engine M/T models) or
EC9-50, "STOP/START SYSTEM : Sys-
(R9M engine CVT models).
• A/C auto amp. transmits stop/start permit signal (permit) to ECM via CAN communication if it judges that the
comfort level in the passenger room can be maintained, even when engine stops while idling, based on each
sensor and the set temperature.
• A/C auto amp. receives operation status of stop/start system (stop/start status signal) from ECM via CAN
communication. When A/C auto amp. recognizes that stop/start system is operating based on the signal, it
changes control characteristics of air flow and inlet.
• When A/C auto amp. judges that the comfort level in the passenger room cannot be maintained while stop/
start function operates, it cancels stop/start permit signal (permit) and requests ECM to restart engine. Also,
when switch operation of A/C control (DEF switch) occurs, it also requests engine restart to ECM as well.
Stop/start Permission Condition Evaluated By A/C Auto Amp. (Before Stop/start Operation)
Before stop/start operation, when the following conditions are met, A/C auto amp. judges that stop/start sys-
tem operation is available and transmits stop/start permit signal to ECM via CAN communication.
• Outlet: Other than DEF (Enabled only when the ambient temperature is 25oC or less. When ambient tem-
perature is higher than 25
°
C (77
°
F), the outlet condition is not included in the conditions for judging that stop/
start is possible.)
• Air flow: Other than for maximum position
• Passenger room temperature: Becomes approx. 20
°
C (68
°
F) or more (when A/C switch is ON/OFF) or
approx. 30
°
C (86
°
F) or less (only when A/C switch is ON).
- When A/C switch is ON: 20
°
C (68
°
F) or more, and 30
°
C (86
°
F) or less.
- When A/C switch is OFF: 20
°
C (68
°
F) or more
JMIIA3571GB
SYSTEM
HAC-33
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
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HAC
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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.
HAC-34
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
OPERATION
OPERATION
Switch Name and Function
INFOID:0000000010432180
OPERATION AND DISPLAY OF AUTOMATIC AIR CONDITIONING SYSTEM (FOR EUROPE 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
Without front window defogger
Without front window defogger
JMIIA3572ZZ
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
JMIIA3573ZZ
OPERATION
HAC-35
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
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HAC
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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
°
C,
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.
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