Infiniti FX35, FX50 (S51). Manual - part 1155

COMPRESSOR CONTROL FUNCTION

HAC-17

< SYSTEM DESCRIPTION >

[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)

JSIIA1284ZZ

HAC-18

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONER]

COMPRESSOR CONTROL FUNCTION

1.

Intake door motor

2.

Air mix door motor (passenger side)

3.

Mode door motor

4.

Air mix door motor (driver side)

5.

Sunload sensor

6.

In-vehicle sensor

7.

Unified meter and A/C amp.

8.

Intake sensor

9.

Blower motor

JSIIA1285ZZ

COMPRESSOR CONTROL FUNCTION

HAC-19

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

WITHOUT ACCS : Component’s role

INFOID:0000000005246213

WITH ACCS

WITH ACCS : Description

INFOID:0000000005246214

PRINCIPLE OF OPERATION

Compressor is not activated.

Functional circuit diagram

Functional initial inspection chart

Component

Reference

Air mix door motor (driver side)

HAC-72, "Description"

Air mix door motor (passenger side)

HAC-74, "Description"

Ambient sensor

HAC-88, "Description"

Blower motor

HAC-80, "Description"

Compressor (magnet clutch)

HAC-84, "Description"

Compressor (ECV)

HAC-86, "Description"

Intake door motor

HAC-76, "WITHOUT ACCS : Description"

Intake sensor

HAC-97, "Description"

In-vehicle sensor

HAC-91, "Description"

Mode door motor

HAC-70, "Description"

Refrigerant pressure sensor

EC-494, "Description"

Sunload sensor

HAC-94, "Description"

Unified meter and A/C amp. 

HAC-69, "Description"

CAN(1) : A/C switch signal

: Blower fan motor switch signal

CAN(2) : A/C compressor request signal

JSIIA0918GB

HAC-20

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONER]

COMPRESSOR CONTROL FUNCTION

WITH ACCS : Fail-safe

INFOID:0000000005246215

FAIL-SAFE FUNCTION

• If a communication error exists between the unified meter and A/C amp., and preset switch for 30 seconds

or longer, air conditioner is controlled under the following conditions:

WITH ACCS : Component Part Location

INFOID:0000000005246216

ENGINE COMPARTMENT

Control unit

Diagnosis Item

Location

A

B

C

D

Unified meter and A/C amp.

Self-diagnosis function

×

–

–

–

ECM

“ENGINE”

Self-diagnosis
(CAN system diagnosis)

–

–

×

–

Data monitor

×

×

×

–

IPDM E/R

“IPDM E/R”

Self-diagnosis
(CAN system diagnosis)

–

–

–

×

Data monitor

–

–

×

–

Auto active test

–

–

–

×

Compressor

: ON

Air outlet

: AUTO

Air inlet

: FRE (Fresh)

Blower fan speed

: AUTO

Set temperature

: Setting before communication error occurs