Nissan Murano. Manual - part 813

 

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Nissan Murano. Manual - part 813

 

 

HAC-26

< SYSTEM DESCRIPTION >

[WITHOUT 7 INCH DISPLAY]

AUTOMATIC AIR CONDITIONER SYSTEM

1.

Intake door motor

2.

Upper ventilator door motor

3.

Air mix door motor (passenger side)

4.

Air mix door motor (driver side)

5.

Mode door motor

6.

Sunload sensor

7.

In-vehicle sensor

8.

A/C auto amp.

9.

Intake sensor

10. Blower motor

JPIIA0608ZZ

AUTOMATIC AIR CONDITIONER SYSTEM

HAC-27

< SYSTEM DESCRIPTION >

[WITHOUT 7 INCH DISPLAY]

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Component Description

INFOID:0000000009722036

Component

Reference

Refrigerant pressure sensor

EC-465, "Description"

Compressor

HAC-74, "Description"

Ambient sensor

HAC-46, "Description"

Intake door motor

HAC-65, "Description"

Upper ventilator door motor

HAC-67, "Description"

Air mix door motor (driver side)

HAC-58, "Description"

Air mix door motor (passenger side)

HAC-60, "Description"

Mode door motor

HAC-62, "Description"

Sunload sensor

HAC-55, "Description"

In-vehicle sensor

HAC-49, "Description"

A/C auto amp. 

HAC-77, "A/C AUTO AMP. : Description"

Intake sensor

HAC-52, "Description"

Blower motor

HAC-70, "Description"

HAC-28

< SYSTEM DESCRIPTION >

[WITHOUT 7 INCH DISPLAY]

MODE DOOR CONTROL SYSTEM

MODE DOOR CONTROL SYSTEM

System Diagram

INFOID:0000000009722037

System Description

INFOID:0000000009722038

The mode door is automatically controlled by the temperature setting, ambient temperature, in-vehicle temper-
ature, intake temperature and amount of sunload.

SYSTEM OPERATION

• The A/C auto amp. receives data from each of the sensors.
• The A/C auto amp. sends the air mix door, the mode door, the upper ventilator door and the intake door

opening angle data to the air mix door motor LCU(s), the mode door motor LCU, the upper ventilator door
motor LCU and the intake door motor LCU.

• The air mix door motor(s), the mode door motor, the upper ventilator door motor and the intake door motor

read their respective signals according to the address signal. Opening angle indication signals received from
the A/C auto amp. and each of the motor position sensors are compared by the LCUs in each door motor
with the existing decision and opening angles.

• Next, HOT/COLD, DEF/VENT, OPEN/SHUT or FRE/REC operations is selected. The newly selected data is

returned to the A/C auto amp.

Door Motor Circuit

Mode Door Control Specification

JMIIA0491GB

JPIIA0495GB

MODE DOOR CONTROL SYSTEM

HAC-29

< SYSTEM DESCRIPTION >

[WITHOUT 7 INCH DISPLAY]

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Mode position can be selected manually by pressing the MODE
switch or the DEF switch on the A/C control. This enables to fix a
mode position. Pressing the AUTO switch allows automatic control
by the A/C auto amp. During the automatic control of a mode posi-
tion, a mode door position (VENT, B/L, FOOT, or D/F) is selected
based on a target the air mix door opening angle and sunload
depending on the temperature calculated by the A/C auto amp. In
addition, the D/F is selected to prevent windshield fogging only when
ambient temperature is extremely low with mode position the FOOT.

JPIIA0767GB

 

 

 

 

 

 

 

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