Infiniti EX35. Manual - part 906

HAC-20

< FUNCTION DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

COMPRESSOR CONTROL FUNCTION

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

JSIIA1066ZZ

COMPRESSOR CONTROL FUNCTION

HAC-21

< FUNCTION DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

TROL SYSTEM : Component’s role

INFOID:0000000003545571

WITH LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CON-
TROL SYSTEM

WITH LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL 
SYSTEM : Description

INFOID:0000000003545572

PRINCIPLE OF OPERATION

Compressor is not activated.

Functional circuit diagram

Component

Reference

Air mix door motor

HAC-73, "WITHOUT LEFT AND RIGHT VENTILATION TEMPER-
ATURE SEPARATELY CONTROL SYSTEM : Description"

Ambient sensor

HAC-91, "Description"

Blower motor

HAC-80, "WITHOUT LEFT AND RIGHT VENTILATION TEMPER-
ATURE SEPARATELY CONTROL SYSTEM : Description"

Compressor

HAC-88, "Description"

intake door motor

HAC-78, "Description"

intake sensor

HAC-100, "Description"

In-vehicle sensor

HAC-94, "Description"

Mode door motor

HAC-70, "Description"

Refrigerant pressure sensor

EC-471, "Description"

Sunload sensor

HAC-97, "Description"

Unified meter and A/C amp. 

HAC-103, "Description"

JSIIA0765GB

HAC-22

< FUNCTION DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

COMPRESSOR CONTROL FUNCTION

Functional initial inspection chart

WITH LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL 
SYSTEM : Fail-Safe

INFOID:0000000003545573

FAIL-SAFE FUNCTION

• If a communication error exists between the unified meter and A/C amp., and the AV control unit and preset

switch for 30 seconds or longer, air conditioner is controlled under the following conditions:

WITH LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL 
SYSTEM : Component Part Location

INFOID:0000000003545574

ENGINE COMPARTMENT

CAN(1) : A/C switch signal

: Blower fan motor switch signal

CAN(2) : A/C compressor request signal

Location

A

B

C

D

CONSULT-III

ECM DATA MONITOR

Yes

Yes

IPDM E/R DATA MONITOR

Yes

AUTO ACTIVE TEST

Yes

Self-diagnosis function (except CAN diagnosis)

Yes

Compressor

: ON

Air outlet

: AUTO

Air inlet

: FRE (Fresh)

Blower fan speed

: AUTO

Set temperature

: Setting before communication error occurs

Display

: OFF

COMPRESSOR CONTROL FUNCTION

HAC-23

< 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)

JPIIA0715ZZ