Nissan Murano. Instruction — part 842
HAC-142
< SYSTEM DESCRIPTION >
[WITH 7 INCH DISPLAY]
COMPRESSOR CONTROL FUNCTION
Component’s Role
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Component
Reference
Refrigerant pressure sensor
Compressor
Ambient sensor
Intake door motor
Upper ventilator door motor
Air mix door motor (driver side)
Air mix door motor (passenger side)
Mode door motor
Sunload sensor
In-vehicle sensor
A/C auto amp.
HAC-202, "A/C AUTO AMP. : Description"
Intake sensor
Blower motor
AUTOMATIC AIR CONDITIONER SYSTEM
HAC-143
< SYSTEM DESCRIPTION >
[WITH 7 INCH DISPLAY]
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HAC
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AUTOMATIC AIR CONDITIONER SYSTEM
System Diagram
INFOID:0000000009722138
CONTROL SYSTEM
The control system consists of input sensors, switches, the A/C auto amp. (microcomputer) and outputs. The
relationship of these components is as shown in the figure below:
System Description
INFOID:0000000009722139
CONTROL OPERATION
Display
The operation status of the system is displayed on the screen.
Models with navigation system
JSIIA1542GB
JMIIA0719GB
HAC-144
< SYSTEM DESCRIPTION >
[WITH 7 INCH DISPLAY]
AUTOMATIC AIR CONDITIONER SYSTEM
Models without navigation system
Preset Switch
MODE Switch
The air discharge outlets are controlled with this switch.
Temperature Control Dial (Driver Side)
The set temperature is increased or decreased with this dial.
Temperature Control Dial (Passenger Side)
• The set temperature is increased or decreased with this dial.
• When the temperature control dial is turned, DUAL switch indicator is turned ON.
AUTO Switch
• The compressor, intake doors, air mix doors, mode doors and blower speed are automatically controlled so
that the in-vehicle temperature will reach, and be maintained at the set temperature selected by the operator.
• When pressing the AUTO switch, air inlet, air outlet, fan speed, and discharge air temperature are automati-
cally controlled.
Defroster (DEF) Switch
Mode doors are set to the defrost position with this switch. Also, intake doors are set to the outside air position,
and compressor turns ON.
UPPER VENT Switch
• When the UPPER VENT switch is pressed, the UPPER VENT switch indicator is turned ON.
• When the UPPER VENT switch indicator is turned ON, the UPPER VENT switch indicator is turned OFF by
pressing the defroster (DEF) switch (after the above operation, the UPPER VENT switch indicator is turned
ON by pressing the UPPER VENT switch).
A/C Switch
Compressor turns ON or OFF with this switch.
(Pressing the A/C switch when the A/C switch is ON turns OFF the A/C switch and compressor.)
Fan Control Dial
The blower speed is instructionly controlled with this dial. Seven speeds are available for instruction control (as
shown on the display screen).
JMIIA0722GB
JMIIA0486GB
AUTOMATIC AIR CONDITIONER SYSTEM
HAC-145
< SYSTEM DESCRIPTION >
[WITH 7 INCH DISPLAY]
C
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HAC
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ON/OFF Switch
Compressor and blower turn OFF, intake doors and the mode doors are automatically controlled.
Rear Window Defogger Switch
When indicator is ON, rear window is defogged.
Intake Switch
• When the intake switch is ON, the intake switch indicator is turned ON, and air inlet is set to REC.
• When the intake switch is pressed again, the intake switch indicator is turned OFF, and air inlet is set to FRE.
• When the intake switch is pressed for approximately 1.5 seconds or longer, the intake switch indicator lamps
blink twice. Then, automatic control mode is entered. Inlet status is displayed by indicator even when auto-
matically controlled.
• When the intake switch indicator is turned OFF, shifting mode position to D/F or DEF, or when compressor is
turned from ON to OFF, intake switch is automatically turned OFF (set to FRE mode). REC mode can be re-
entered by pressing intake switch again, and then compressor is turned ON. (Except D/F or DEF position)
DUAL Switch
• When the DUAL switch indicator is ON, the driver side and passenger side, temperature can each be set
independently.
• When the DUAL switch indicator is OFF, the driver side outlet and setting temperature are applied to both
sides.
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