Infiniti G37 Coupe. Manual - part 760

AUTOMATIC AIR CONDITIONER SYSTEM

HAC-29

< FUNCTION DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

PASSENGER COMPARTMENT

1.

Refrigerant pressure sensor

2.

Ambient sensor

3.

Compressor (magnet clutch)

4.

Compressor (ECV)

JSIIA0746ZZ

HAC-30

< FUNCTION DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

AUTOMATIC AIR CONDITIONER SYSTEM

WITHOUT LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CON-

1.

Intake door motor

2.

Mode door motor

3.

Air mix door motor

4.

Sunload sensor

5.

In-vehicle sensor

6.

Unified meter and A/C amp.

7.

Intake sensor

8.

Blower motor

JSIIA0122ZZ

AUTOMATIC AIR CONDITIONER SYSTEM

HAC-31

< FUNCTION DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

TROL SYSTEM : Component Description

INFOID:0000000001675676

WITH LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CON-
TROL SYSTEM

WITH LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL 
SYSTEM : System Diagram

INFOID:0000000001675677

CONTROL SYSTEM

The control system consists of input sensors, switches, unified meter and A/C amp. (microcomputer) and out-
puts. The relationship of these components is as shown in the figure below:

Component

Reference

Air mix door motor

HAC-70, "WITHOUT LEFT AND RIGHT VENTILATION TEMPER-
ATURE SEPARATELY CONTROL SYSTEM : Description"

Ambient sensor

HAC-88, "Description"

Blower motor

HAC-77, "WITHOUT LEFT AND RIGHT VENTILATION TEMPER-
ATURE SEPARATELY CONTROL SYSTEM : Description"

Compressor

HAC-85, "Description"

intake door motor

HAC-75, "Description"

intake sensor

HAC-97, "Description"

In-vehicle sensor

HAC-91, "Description"

Mode door motor

HAC-67, "Description"

Refrigerant pressure sensor

EC-511, "Description"

Sunload sensor

HAC-94, "Description"

Unified meter and A/C amp. 

HAC-100, "Description"

JSIIA0750GB

HAC-32

< FUNCTION DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

AUTOMATIC AIR CONDITIONER SYSTEM

WITH LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL 
SYSTEM : System Description

INFOID:0000000001675678

CONTROL OPERATION

Display Screen

The operation status of the system is displayed on the screen.

Preset Switch

MODE Switch

The air discharge outlets is controlled with this switch.

Temperature Control Dial (Potentio Temperature Control) (Driver Side) 

The set temperature is increased or decreased with this dial.

Temperature Control Dial (Potentio Temperature Control) (Passenger Side) 

• The set temperature is increased or decreased with this dial.
• When the temperature control dial is turned, the DUAL switch indicator will automatically illuminate.

AUTO Switch 

• The compressor, intake doors, air mix doors, mode doors and blower speed are automatically controlled so

that the in-vehicle temperature will reach, and be maintained at the set temperature selected by the operator.

• When pressing AUTO switch, air inlet, air outlet, fan speed, and discharge air temperature are automatically

controlled.

Defroster (DEF) Switch

Mode doors are set to the defrost position with this switch. Also, intake doors are set to the outside air position,
and compressor turns ON.

A/C Switch

Compressor is ON or OFF with this switch.
(Pressing the A/C switch when the A/C switch is ON turns OFF the A/C switch and compressor.)

FAN Switches

JSIIA0058GB

JSIIA0766GB