Infiniti QX56 (Z62). Manual - part 784

SYSTEM

HAC-27

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

AIR DISTRIBUTION

REAR AUTOMATIC AIR CONDITIONING SYSTEM : Temperature Control

INFOID:0000000006275874

• When ignition switch is in the ON position, A/C auto amp. always

automatically controls temperature 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

HAC-28

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

SYSTEM

ACCS (ADVANCED CLIMATE CONTROL SYSTEM) : System Diagram

INFOID:0000000006275875

ACCS (ADVANCED CLIMATE CONTROL SYSTEM) : System Description

INFOID:0000000006275876

• ACCS (advanced climate control system) controls passenger 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 CONTROL 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 control system) are transmitted from preset switch to AV

control unit via communication line and from AV control unit to A/C auto amp. via CAN communication. A/C
auto amp. sends each indication information to AV control unit via CAN communication. AV control unit dis-
plays each indication information that is received.

ACCS (ADVANCED CLIMATE CONTROL SYSTEM) : 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 exhaust 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

SYSTEM

HAC-29

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

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M

A

B

HAC

N

O

P

• Sensitivity of exhaust gas / outside 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.

HAC-30

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

OPERATION

OPERATION

FRONT AUTOMATIC AIR CONDITIONING SYSTEM

FRONT AUTOMATIC AIR CONDITIONING SYSTEM : 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 front 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 conditioning 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