Nissan GT-R. Manual - part 160

HAC-2

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONER]

AUTOMATIC AIR CONDITIONER SYSTEM

SYSTEM DESCRIPTION

AUTOMATIC AIR CONDITIONER SYSTEM

System Diagram

INFOID:0000000009163969

CONTROL SYSTEM

The control system consists of input sensors, switches, A/C auto amp. (microcomputer) and outputs. The rela-
tionship of these components is as shown in the figure below:

System Description

INFOID:0000000009163970

CONTROL OPERATION

A/C Display

• The status display screen is displayed by pressing the STATUS switch to check the A/C system operating

condition. 

• If the A/C operation is performed when any screen other than the status display screen (such as the naviga-

tion system and the audio system) is displayed, the switch operating condition of the used switch is dis-
played on the bottom of the screen. It turns OFF automatically after several seconds. 

NNIIA0132GB

JSIIA1049GB

AUTOMATIC AIR CONDITIONER SYSTEM

HAC-3

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONER]

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Controller (Preset Switch)

MODE Switch

• The “AUTO” on the A/C display turns OFF by pressing the MODE switch from the condition that the AUTO

switch is ON (automatic control). 

• The set temperature (driver side and passenger side) and air outlets are displayed on the A/C display by

pressing the MODE switch from the condition that the A/C system is OFF.

• The air outlets may be switched by pressing the MODE switch. Any of VENT, B/L, FOOT, or D/F can be

selected. 
VENT

→

B/L

→

FOOT

→

D/F

→

VENT

Temperature Control Dial (Potentio Temperature Control)

• It can select the set temperature of the A/C display at the range of 18.0

°

C (60

°

F) to 32.0

°

C (90

°

F) in incre-

ments of 0.5

°

C (1.0

°

F) freely. 

• It increases in increments of 0.5

°

C (1.0

°

F) by turning the temperature control dial clockwise. 

• It decreases in increments of 0.5

°

C (1.0

°

F) by turning the temperature control dial counterclockwise. 

• The system is set to the LH/RH independent condition (the DUAL switch indicator turns ON) by operating the

temperature control dial (passenger side). It can change the air flow temperature of passenger side without
changing the air flow temperature of driver side. 

• When the air outlet is set to DEF, the temperature control dial (passenger side) is inoperative. 
• The set temperature is changed by operating the temperature control dial even if the A/C system is OFF

condition. However, the set temperature is not displayed when the display is turned OFF. 

Fan Control Dial

• The fan speed can be selected from the range of 1-7 freely by operating the fan control dial. 
• The set temperature, air outlets, and fan speed are displayed on the A/C display by turning the fan control

dial clockwise from the condition that the A/C system is OFF. 

• The “AUTO” on the A/C display turns OFF by operating the fan control dial from the condition that the AUTO

switch is ON (automatic control). 

A/C Switch

• “A/C OFF” is displayed on the A/C display for several seconds, the A/C switch indicator turns OFF, and the

compressor is turned OFF by pressing the A/C switch from the condition that the compressor is ON (auto-
matic control). 

• When pressing the A/C switch again, “A/C ON” is displayed on the A/C display for several seconds, the A/C

switch indicator turns ON, and the compressor is turned to ON. 

DEF Switch

JSIIA1331GB

HAC-4

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONER]

AUTOMATIC AIR CONDITIONER SYSTEM

• The “AUTO” on the A/C display turns OFF and the DEF switch indicator turns ON by pressing the DEF

switch from the condition that the AUTO switch is ON (automatic control). 

• The set temperature, air outlets (DEF), and fan speed are displayed on the A/C display by pressing the DEF

switch from the condition that the A/C system is OFF. The DEF switch indicator and the A/C switch indicator
illuminate. 

• Basically, pressing the DEF switch fixes the air outlet to DEF and the air inlets to fresh air intake. The FRE

switch indicator illuminates, the compressor is turned to ON, and the air flow is set to automatic control. (If
the condition before pressing the DEF switch is the air flow manual control, it is not set to the automatic con-
trol.)

• When pressing the DEF switch again, it returns to the condition that existed before pressing the switch.

However, the air flow manual control is given priority to when the DEF switch is pressed again since the fan
control dial is operated after the DEF switch is pressed once. In addition, the air flow manual selection is
given priority when the DEF switch is pressed again since the fan switch is operated after starting with the
DEF switch from the OFF condition. The air outlets and the air inlets are controlled automatically and the
compressor is still ON. 

AUTO Switch

• The AUTO switch indicator turns ON. “AUTO”, set temperature (driver side and passenger side), fan speed,

and air outlets are displayed on the A/C display. 

• The air outlets, air inlets, fan speed, and air flow temperature are controlled automatically. (They are set to

the automatic control only when the air inlets are not fixed to recirculation and fresh air intake.)

DUAL Switch

• When the DUAL switch indicator is ON, the driver side and passenger side, temperature can each be set

independently.

• When the DUAL switch indicator is OFF, the driver side setting temperature is applied to both sides.
• The left and right ventilation temperature separately control is cancelled by turning the DEF switch to ON. 

REC Switch

• When pressing the REC switch, the REC switch indicator illuminates and the air inlet is fixed to recirculation. 
• The REC switch indicator blink twice and the system is switched to the automatic control when pressing the

FRE switch or the REC switch for approximately 2 seconds or more. In addition, the condition of the air inlet
is displayed at the automatic control. 

• When FRE switch indicator turned ON, shifting mode position to D/F or DEF, or when compressor is turned

from ON to OFF, REC switch is automatically turned OFF (fixed to fresh air intake). Recirculation mode can
be re-entered by pressing REC switch again, and then compressor is turned ON (Except D/F or DEF posi-
tion).

FRE Switch

• When pressing the FRE switch, the FRE switch indicator illuminates and the air inlet is fixed to fresh air

intake. 

• The REC switch indicator blink twice and the system is switched to the automatic control when pressing the

FRE switch or the REC switch for approximately 2 seconds or more. In addition, the condition of the air inlet
is displayed at the automatic control. 

Rear Window Defogger Switch

• The “Rear defrost ON” is displayed on the A/C display when pressing the rear window defogger switch. The

indicator of rear window defogger switch illuminates, and then the rear window defogger is turned ON. 

• The “Rear defrost OFF” is displayed on the A/C display when pressing the rear window defogger switch

again. The indicator of rear window defogger switch turns OFF, and then the rear window defogger is turned
OFF. 

• Refer to 

DEF-3, "System Description"

 for details. 

OFF Switch

• The blower motor and compressor are turned OFF when pressing the OFF switch. At this time, the switch

condition just before OFF is recorded on the set temperature and the left and right ventilation temperature
separately control mode. 

• Fix the air inlet to fresh air intake. However, when the REC switch was ON, fix it to recirculation. Inlet status

is displayed by indicator when air conditioner system is OFF. 

• Set the air outlet to foot position. (The air outlet can be switched with the MODE switch.)

AUTOMATIC AIR CONDITIONER SYSTEM

HAC-5

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONER]

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DISCHARGE AIR FLOW

JSIIA1332GB