Infiniti EX35. Manual - part 905

HAC-16

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONER]

INSPECTION AND ADJUSTMENT

When battery cable is disconnected or battery voltage is below 10 V, memory function is canceled. Memory
function set becomes that of initial condition.

FRE indicator

REC indicator

Setting status

Setting changeover 

method

FRE

REC

OFF

ON

AUTO control (Initial setting)

Manual REC status is memorized. 
(Initial setting)

Intake switch: ON

ON

ON

Manual FRE status is memorized.

Manual REC status is memorized.

ON

OFF

Manual FRE status is memorized.

AUTO control

OFF

OFF

AUTO control

AUTO control

COMPRESSOR CONTROL FUNCTION

HAC-17

< FUNCTION DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

FUNCTION DIAGNOSIS

COMPRESSOR CONTROL FUNCTION

WITHOUT LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY
CONTROL SYSTEM

WITHOUT LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CON-
TROL SYSTEM : Description

INFOID:0000000003545568

PRINCIPLE OF OPERATION

Compressor is not activated.

Functional circuit diagram

Functional initial inspection chart

WITHOUT LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CON-
TROL SYSTEM : Fail-Safe

INFOID:0000000003545569

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:

CAN(1) : A/C switch signal

: Blower fan motor switch signal

CAN(2) : A/C compressor request signal

JSIIA0765GB

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

HAC-18

< FUNCTION DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

COMPRESSOR CONTROL FUNCTION

WITHOUT LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CON-
TROL SYSTEM : Component Part Location

INFOID:0000000003545570

ENGINE COMPARTMENT

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-19

< 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