Infiniti FX35, FX50 (S51). Manual - part 1163

 

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Infiniti FX35, FX50 (S51). Manual - part 1163

 

 

AIR MIX DOOR CONTROL SYSTEM

HAC-49

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

When ignition switch is ON, unified meter and A/C amp. continuously
and automatically controls temperatures regardless of air conditioner
operational condition. When setting a target temperature with tem-
perature control dial, unified meter and A/C amp. corrects the set
temperature and decides a target air mix door opening angle. Unified
meter and A/C amp. controls air mix door according to the target air
mix door opening angle and current air mix door opening angle for
keeping an optimum air mix door opening angle. When a tempera-
ture is set at 18.0

°

C (60

°

F), air mix door is fixed at full cold, and

when a temperature is set at 32.0

°

C (90

°

F), it is set at full hot.

Potentio Temperature Control (PTC)

The PTC (1) is built into the preset switch. It can be set at an interval
of 0.5

°

C (1.0

°

F) in the 18.0

°

C (60

°

F) to 32.0

°

C (90

°

F) temperature

range by turning temperature control dial. The set temperature is dis-
played.

RJIA1782E

JSIIA0020GB

HAC-50

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONER]

INTAKE DOOR CONTROL SYSTEM

INTAKE DOOR CONTROL SYSTEM

WITHOUT ACCS

WITHOUT ACCS : System Diagram

INFOID:0000000005246235

WITHOUT ACCS : System Description

INFOID:0000000005246236

The intake doors are automatically controlled by the temperature setting, ambient temperature, in-vehicle tem-
perature, intake temperature, amount of sunload and ON/OFF operation of the compressor.

SYSTEM OPERATION

The intake door control judges intake door position based on the ambient temperature, the intake air tempera-
ture and the in-vehicle temperature. When shifting mode position D/F, when the DEF or OFF switches are
pressed, or when A/C switch is OFF, the unified meter and A/C amp. sets the intake door at the FRE position.

Door Motor Circuit

Intake Door Control Specification

JSIIA0777GB

JSIIA0880GB

INTAKE DOOR CONTROL SYSTEM

HAC-51

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

• Intake door position is basically fixed at FRE when FRE indicator

of intake switch is ON or DEF switch is ON.

• Intake door position is basically fixed at REC when REC indicator

of intake switch is ON.

• Intake door automatic control selects FRE, 20 - 80%FRE, or REC

depending on a target air mix door opening angle, based on in-
vehicle temperature, ambient temperature, and sunload.

WITH ACCS

WITH ACCS : System Diagram

INFOID:0000000005246237

WITH ACCS : System Description

INFOID:0000000005246238

The intake doors are automatically controlled by the ambient atmospheric CO and NO

2, 

temperature setting,

ambient temperature, in-vehicle temperature, intake temperature, amount of sunload and ON/OFF operation
of the compressor.

SYSTEM OPERATION

The intake door control judges intake door position based on the ambient atmospheric CO and NO

2, 

ambient

temperature, the intake air temperature and the in-vehicle temperature. When DEF or OFF switches are
pressed, the unified meter and A/C amp. sets the intake door at the FRE position.

RJIA4067E

JSIIA1161GB

HAC-52

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONER]

INTAKE DOOR CONTROL SYSTEM

Door Motor Circuit

Intake Door Control Specification

• Intake door position is basically fixed at FRE when REC indicator

of intake switch is OFF or DEF switch is ON.

• Intake door position is basically fixed at REC when REC indicator

of intake switch is ON.

• Intake door automatic control selects FRE, 20 - 80%FRE, or REC

depending on a target air mix door opening angle, based on in-
vehicle temperature, ambient temperature, and sunload.

Auto Intake Control System

In addition to the regular automatic control, intake door condition is
controlled by gas sensor output signal when auto intake mode is
selected. This system automatically controls the inlet to prevent a
smell of exhaust gas from getting into vehicle by receiving signals
from the gas sensor that detects ambient atmospheric CO and NO

2.

JSIIA0880GB

RJIA4067E

ZJIA1166E

 

 

 

 

 

 

 

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