climate control INFINITI QX56 2011 Factory User Guide

SYSTEMHAC-19
< SYSTEM DESCRIPTION > [AUTOMATIC AIR CONDITIONING]
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*: Inlet status is displayed by indi cator when activating automatic control
Without ACCS (Advanced Climate Control System)
1. Intake door 2. In-cabin microfilter 3. Blower motor
4. Evaporator 5. Air mix door (Driver side/Passenger
side)6. Heater core
7. Foot door 8. Ventilator door 9. Upper ventilator door
10. Defroster door Fresh air intake Recirculation air
Center ventilator Side ventilator Upper ventilator
Foot Rear foot Defroster
Switch/Dial position Door position
Ventilator door Foot
doorDefroster
door Intake
door Upper
ventilator
door Air mix
door
(Driver side) Air mix
door
(Passen-
ger
side)
AUTO switch AUTO — AUTO
MODE switch VENT H E N —
B/L I F N —
FOOT J G O — D/F J G O B —
DEF switch J E P B K —
Intake switch
*FRE — B —
REC — A —
Upper ventila- tor switch ON — L – M —
OFF — K —
Temperature control dial
(Driver side) DUAL
switch:
OFF18.0
°C (60 °F) — C
18.5 °C (61 °F) ⇔
31.5 °C (89 °F) —AUTO
32.0 °C (90 °F) — D
Temperature control dial
(Driver side) DUAL
switch:
ON18.0
°C (60 °F) — C —
18.5 °C (61 °F) ⇔
31.5 °C (89 °F) —AUTO—
32.0 °C (90 °F) — D —
Temperature control dial
(Passenger side) 18.0
°C (60 °F) — C
18.5 °C (61 °F) ⇔
31.5 °C (89 °F) —AUTO
32.0 °C (90 °F) — D
OFF switch AUTO —
Revision: 2010 May2011 QX56

SYSTEMHAC-27
< SYSTEM DESCRIPTION > [AUTOMATIC AIR CONDITIONING]
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AIR DISTRIBUTION
REAR AUTOMATIC AIR CONDITIONING SYSTEM : Temperature ControlINFOID:0000000006275874
 When ignition switch is in the ON position, A/C auto amp. always
automatically controls temperatur e regardless of rear air condition-
ing operational state.
 A/C auto amp. calculates the target rear air mix door opening
angle depending on set temperature, in-vehicle temperature (rear
side), ambient temperature, and sunload.
 Rear air mix door is controlled depending on the comparison of
current rear air mix door opening angle and target front air mix
door opening angle.
 Regardless of in-vehicle temperature (rear side), ambient tempera-
ture, and sunload, rear air mix door is fixed at the fully cold position
when set temperature is 18.0 °C (60 °F), and at the fully hot position
when set temperature is 32.0 °C (90 °F).
ACCS (ADVANCED CLIMATE CONTROL SYSTEM)
MODE switch VENT C —
B/L D —
FOOT E —
Temperature control dial (front A/C control)
Temperature control switch (rear A/C control) 18.0
°C (60 °F) — A
18.5 °C (61 °F) ⇔
31.5 °C (89 °F) —AUTO
32.0 °C (90 °F) — B
OFF switch AUTO —
Switch/Dial position
Door position
Rear mode door Rear air mix door
Discharge air flow
Mode position Air outlet/distribution
VENT FOOT
100% —
62% 38%
—100%
JMIIA0734GB
Revision: 2010 May2011 QX56

HAC-28
< SYSTEM DESCRIPTION >[AUTOMATIC AIR CONDITIONING]
SYSTEM
ACCS (ADVANCED CLIMATE CONT ROL SYSTEM) : System Diagram
INFOID:0000000006275875
ACCS (ADVANCED CLIMATE CONTROL SYSTEM) : System DescriptionINFOID:0000000006275876
 ACCS (advanced climate control system) controls pass enger room air. It maintains the cleanliness of the
passenger room air using an in-cabin microfilter and a combination of each of the following functions.
- HAC-28, "
ACCS (ADVANCED CLIMATE CONT ROL SYSTEM) : Automatic Intake Control (Exhaust Gas /
Outside Odor Detecting Mechanism)"
-HAC-29, "ACCS (ADVANCED CLIMATE CONTROL SYSTEM) : Plasmacluster Control"
NOTE:
 Plasmacluster
™ ion technology developed by Sharp Corporation is installed in this item.
 Plasmacluster
™ is a trademark of Sharp Corporation.
 Various operations of ACCS (advanced climate contro l system) are transmitted from preset switch to AV
control unit via communication line and from AV contro l unit to A/C auto amp. via CAN communication. A/C
auto amp. sends each indication information to AV c ontrol unit via CAN communication. AV control unit dis-
plays each indication information that is received.
ACCS (ADVANCED CLIMATE CONTROL SYSTE M) : Automatic Intake Control (Ex-
haust Gas / Outside Odor Detecting Mechanism)
INFOID:0000000006275877
DESCRIPTION
In addition to air inlet automatic control of front automatic air conditioning system, A/C auto amp. controls
automatically air inlet according to signal from ex haust gas / outside odor detecting sensor, so that unpleasant
outside odor does not enter in passenger room.
OPERATION DESCRIPTION
 When pressing auto intake switch while front blower motor is operated and DEF switch is OFF, auto intake switch indicator lamp and intake switch indicator lamp turn ON. Air inlet is fixed to recirculation for approxi-
mately 5 minutes, and then is switched to automatic intake control (exhaust gas / outside odor detecting
mechanism).
 Air inlet switches to recirculation when exhaust gas or outside odor is detected while automatic intake control
(exhaust gas / outside odor detecting mechanism) is operated. After that, air inlet switches to fresh air intake
when exhaust gas or outside odor becomes not detectable.
NOTE:
JMIIA0819GB
Revision: 2010 May2011 QX56

SYSTEMHAC-29
< SYSTEM DESCRIPTION > [AUTOMATIC AIR CONDITIONING]
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 Sensitivity of exhaust gas / out side odor detecting sensor can be changed by “GAS SENSOR ADJUST-
MENT” in “WORK SUPPORT” mode of CONSULT-III. Refer to HAC-70, "
ACCS (ADVANCED CLIMATE
CONTROL SYSTEM) : Exhaust Gas / Outside Odor Detecting Sensor Sensitivity Adjustment Function".
 Automatic intake control (exhaust gas / outside odor detecting mechanism) does not operate when ambient
temperature is −2 °C (28 °F) or less. In this case, control is only for control of automatic air inlet of automatic
air conditioning system.
ACCS (ADVANCED CLIMATE CONTROL SYSTEM) : Plasmacluster Control
INFOID:0000000006275878
DESCRIPTION
Plasmacluster™ control eliminates microbes and reduces odor on interior surface by including high density
Plasmacluster
™ ion in air conditioning outlet air flow.
OPERATION DESCRIPTION
 Plasmacluster™ control operates by interlocking to blower motor. Plasmacluster™ control operates when
blower motor operates.
 Control status is displayed on front air conditioning system display screen. Refer to HAC-37, "
ACCS
(ADVANCED CLIMATE CONTROL SYSTEM) : Switch Name and Function".
NOTE:
 Plasmacluster
™ ion technology developed by Sharp Corporation is installed in this item.
 Plasmacluster
™ is a trademark of Sharp Corporation.
Revision: 2010 May2011 QX56

HAC-30
< SYSTEM DESCRIPTION >[AUTOMATIC AIR CONDITIONING]
OPERATION
OPERATION
FRONT AUTOMATIC AIR CONDITIONING SYSTEM
FRONT AUTOMATIC AIR CONDITIONING S
YSTEM : Switch Name and Function
INFOID:0000000006275881
WITH ACCS (ADVANCED CLIMATE CONTROL SYSTEM)
A/C Display
 Front air conditioning system state is indicated on the display.
 When “STATUS” on multifunction switch is pressed while front air conditioning system is in the ON position,
the display changes to state indication display of fr ont air conditioning system. When front air conditioning
system is operated while navigation system or audio system is displayed, front air conditioning system state
is indicated in the lower portion of display for several seconds.
 When MODE switch is pressed while front air conditioni ng system is in the OFF position, state indication dis-
play is indicated for several seconds.
Display Screen
Controller (Preset Switch)
Switch Operation
JMIIA0821GB
1. AUTO switch 2. Temperature control dial (Driver
side)3. MODE switch
4. OFF switch 5. A/C switch 6. Upper ventilator switch
7. Temperature control dial (passenger side) 8. DUAL switch 9. Intake switch
10. Fan switch 11. DEF switch
JMIIA0823ZZ
Revision: 2010 May2011 QX56

HAC-32
< SYSTEM DESCRIPTION >[AUTOMATIC AIR CONDITIONING]
OPERATION
WITHOUT ACCS (ADVANCED CLIMATE CONTROL SYSTEM)
A/C Display
 Front air conditioning system state is indicated on the display.
 When “STATUS” on multifunction switch is pressed while
front air conditioning system is in the ON position,
the display changes to state indication display of fr ont air conditioning system. When front air conditioning
system is operated while navigation system or audio system is displayed, front air conditioning system state
is indicated in the lower portion of display for several seconds.
 When MODE switch is pressed while front air conditioni ng system is in the OFF position, state indication dis-
play is indicated for several seconds.
Display Screen
Controller (Preset Switch)
Intake switch Air inlet changes between recirculation (REC)
⇔ fresh air intake (FRE) each time this switch is
pressed.
 Intake switch indicator ON: Recirculation
 Intake switch indicator OFF: Fresh air intake
NOTE:
 When front air conditioning system is in the OFF position, air inlet can be selected.
 When MODE switch and DEF switch is in the D/F or DEF position, air inlet cannot be selected to recirculation (REC).
Temperature control dial
(driver side)  Selects set temperature within a range between 18.0
°C (60 °F) – 32.0 °C (90 °F) at a rate of 0.5 °C
(1.0 °F) each time the dial is rotated.
- Clockwise rotation: Set temperature increases.
- Counterclockwise rotation: Set temperature decreases.
NOTE:
When front air conditioning system is in the OFF position, set temperature can be selected only while
front air conditioning system state (when MODE switch is pressed) is indicated on the display.
Temperature control dial
(passenger side)  Selects set temperature within a range between 18.0
°C (60 °F) – 32.0 °C (90 °F) at a rate of 0.5 °C
(1.0 °F) each time the dial is rotated.
- Clockwise rotation: Set temperature increases.
- Counterclockwise rotation: Set temperature decreases.
 When the temperature control dial is turned, DUAL switch indicator turns ON.
NOTE:
When front air conditioning system is in the OFF position, set temperature can be selected only while
front air conditioning system state (when MODE switch is pressed) is indicated on the display.
Upper ventilator switch Turns the upper ventilator control (switch indicator) between ON
⇔ OFF each time while front blower
fan is activated.
NOTE:
 When front air conditioning system is in the OFF position and air outlet is DEF position, upper ven- tilator control cannot be activated.
 When front air conditioning system is in the OFF position, upper ventilator control can be selected
only while front air conditioning system state (when MODE switch is pressed) is indicated on the
display.
JMIIA0719GB
Revision: 2010 May2011 QX56

OPERATIONHAC-35
< SYSTEM DESCRIPTION > [AUTOMATIC AIR CONDITIONING]
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REAR AUTOMATIC AIR CONDITIONING SYSTEM
REAR AUTOMATIC AIR CONDITIONING SY STEM : Switch Name and Function
INFOID:0000000006275882
FRONT CONTOLLER OPERATION
A/C Display
 Rear air conditioning system state is indicated on the front display.
 When REAR switch is pressed while air conditioning syst em is in the ON position, the front display changes
to state indication display (rear contro l mode) of rear air conditioning system.
Display screen
Controller (Preset Switch)
With ACCS (advanced climate control system)
Temperature control dial
(passenger side)  Selects set temperature within a range between 18.0
°C (60 °F) – 32.0 °C (90 °F) at a rate of 0.5 °C
(1.0 °F) each time the dial is rotated.
- Clockwise rotation: Set temperature increases.
- Counterclockwise rotation: Set temperature decreases.
 When the temperature control dial is turned, DUAL switch indicator turns ON.
NOTE:
When front air conditioning system is in the OFF position, set temperature can be selected only while
front air conditioning system state (when MODE switch is pressed) is indicated on the display.
Upper ventilator switch Turns the upper ventila
tor control (switch indicator) between ON ⇔ OFF each time while front blower
fan is activated.
NOTE:
 When front air conditioning system is in the OFF position and air outlet is DEF position, upper ven- tilator control cannot be activated.
 When front air conditioning system is in the OFF position, upper ventilator control can be selected only while front air conditioning system state (when MODE switch is pressed) is indicated on the
display.
JMIIA0720ZZ
JMIIA0825ZZ
1. AUTO switch 2. Temperature control dial (Driver
side)3. MODE switch
4. REAR switch 5. OFF switch 6. Fan switch
Revision: 2010 May2011 QX56

HAC-36
< SYSTEM DESCRIPTION >[AUTOMATIC AIR CONDITIONING]
OPERATION
Without ACCS (advanced
climate control system)
Switch Operation
REAR CONTROLLER OPERATION
Controller (Rear A/C Control)
JMIIA0824ZZ
1. AUTO switch 2. Temperature control dial (Driver
side)3. MODE switch
4. REAR switch 5. OFF switch 6. Fan switch
AUTO switch Turns the switch indicator lamp and "AUTO" indicator on the front display ON, and then rear air con-
ditioning system becomes the following state.
 Air outlet: Automatic control
 Blower fan: Automatic control
 Compressor: ON
Fan switch (UP/DOWN) Blower fan speed is manually controlled with these switches. Seven speeds are available for manual
control (as shown on the display screen)
NOTE:
When fan switch is pressed while air conditioning system is in automatic control (“AUTO” is indicated),
automatic control is rele
ased (“AUTO” turns OFF).
MODE switch Selects air outlet sequentially from VENT
⇒ B/L ⇒ FOOT ⇒ VENT each time.
NOTE:
When MODE switch is pressed while air conditioning system is in automatic control (“AUTO” is indi-
cated), automatic control is released (“AUTO” turns OFF).
OFF switch  Turns rear air conditioning system OFF. (When rear control mode is ON)
 When rear air conditioning system turns OFF, air outlet become the automatic control.
REAR switch  Turns the switch indicator lamp and rear control mode on the front display ON, and then rear air
conditioning system becomes the following state.
- Air outlet: Automatic control
- Blower fan: Automatic control
- Compressor: ON
 Rear control mode is released when switch is pressed again (rear air conditioning system operates continuously).
Temperature control dial
(driver side)  Selects set temperature within a range between 18.0
°C (60 °F) – 32.0 °C (90 °F) at a rate of 0.5 °C
(1.0 °F) each time the dial is rotated.
- Clockwise rotation: Set temperature increases.
- Counterclockwise rotation: Set temperature decreases.
Revision: 2010 May2011 QX56

OPERATIONHAC-37
< SYSTEM DESCRIPTION > [AUTOMATIC AIR CONDITIONING]
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Switch Operation
ACCS (ADVANCED CLIMATE CONTROL SYSTEM)
ACCS (ADVANCED CLIMATE CONTROL SY
STEM) : Switch Name and Function
INFOID:0000000006275883
OPERATION AND DISPLAY
Plasmacluster™ ion display
 Plasmacluster™ control state is indicated on the front display.
 Plasmacluster
™ ion display is switched as shown in the figure depending on air flow.
NOTE:
 Plasmacluster
™ ion technology developed by Sharp Corporation is installed in this item.
 Plasmacluster
™ is a trademark of Sharp Corporation.
1. OFF switch 2. Fan switch 3. Display
4. Temperature control switch 5. MODE switch 6. AUTO switch
JMIIA0718ZZ
AUTO switch Turns the switch indicator lamp and "AUTO" indicator on the display ON, and then rear air condition-
ing system becomes the following state.
 Air outlet: Automatic control
 Blower fan: Automatic control
 Compressor: ON
Fan switch (UP/DOWN) Blower fan speed is manually controlled with these switches. Seven speeds are available for manual
control (as shown on the display screen)
NOTE:
When fan switch is pressed while air conditioning system is in automatic control (“AUTO” is indicated),
automatic control is rele
ased (“AUTO” turns OFF).
MODE switch Selects air outlet sequentially from VENT
⇒ B/L ⇒ FOOT ⇒ VENT each time.
NOTE:
When MODE switch is pressed while air conditioning system is in automatic control (“AUTO” is indi-
cated), automatic control is released (“AUTO” turns OFF).
OFF switch  Turns rear air conditioning system OFF.
 When rear air conditioning system turns OFF, air outlet become the automatic control.
Temperature control
switch Setting temperature is selected using this switch with in a range between 18.0
°C (60 °F) – 32.0 °C
(90 °F) at a rate of 0.5 °C (1.0 °F) per adjustment.
 : Press: Set temperature increases.
 : Press: Set temperature decreases.
Revision: 2010 May2011 QX56

DIAGNOSIS SYSTEM (HVAC)HAC-41
< SYSTEM DESCRIPTION > [AUTOMATIC AIR CONDITIONING]
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*: With ACCS (advanced climate control system)
NOTE:
Perform the inspection of each output device after starting the engine because the compressor is operated.
WORK SUPPORT
*: With ACCS (advanced climate control system)
NOTE:
When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10 V
or less, the setting of WORK SUPPORT may be cancelled.
Rear A/C relay ON ON ON ON OFF OFF ON
Ionizer
*ON ON ON ON ON ON OFF
Front display (Ion mode)
*CLEAN CLEAN QUICK
CLEAN QUICK
CLEAN QUICK
CLEAN QUICK
CLEAN OFF
Te s t i t e m
MODE 1 MODE 2 MODE 3 MODE 4 MODE 5 MODE 6 MODE 7
Work item Description Refer to
TEMP SET CORRECT Setting change of temperature setting trimmer (front) can be per-
formed. HAC-68, "
FRONT AUTO-
MATIC AIR CONDITION-
ING SYSTEM :
Temperature Setting Trim-
mer (Front)"
BLOWER SET Setting change of foot position setting trimmer can be performed.
HAC-68, "
FRONT AUTO-
MATIC AIR CONDITION-
ING SYSTEM : Foot
Position Setting Trimmer"
REC MEMORY SET
Setting change of inlet port memory function (REC) can be per-
formed. HAC-69, "
FRONT AUTO-
MATIC AIR CONDITION-
ING SYSTEM : Inlet Port
Memory Function (REC)"
FRE MEMORY SET
Setting change of inlet port memory function (FRE) can be per-
formed. HAC-69, "
FRONT AUTO-
MATIC AIR CONDITION-
ING SYSTEM : Inlet Port
Memory Function (FRE)"
GAS SENSOR ADJUSTMENT*Setting change of exhaust gas / outside odor detecting sensor sensi-
tivity adjustment function can be performed. HAC-70, "
ACCS (AD-
VANCED CLIMATE CON-
TROL SYSTEM) :
Exhaust Gas / Outside
Odor Detecting Sensor
Sensitivity Adjustment
Function"
CLEAN SW SET*Setting change of auto intake switch interlocking movement change
function can be performed.
HAC-70, "
ACCS (AD-
VANCED CLIMATE CON-
TROL SYSTEM) : Auto
Intake Switch Interlocking
Movement Change Func-
tion"
REAR TEMP SET CORRECT
Setting change of temperature setting trimmer (rear) can be per-
formed. HAC-68, "
FRONT AUTO-
MATIC AIR CONDITION-
ING SYSTEM :
Temperature Setting Trim-
mer (Front)"
Revision: 2010 May2011 QX56