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]

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.

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

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]

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.

Content .. 1097 1098 1099 1100 ..