Nissan Cube. Manual - part 576

 

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Nissan Cube. Manual - part 576

 

 

HAC-142

< SYSTEM DESCRIPTION >

[MANUAL AIR CONDITIONING]

MANUAL AIR CONDITIONING SYSTEM

COMPRESSOR CONTROL

Description

• BCM transmits the A/C ON signal and blower fan ON signal to ECM via CAN communication line only when

the compressor operational condition is satisfied, and A/C indicator is turned ON.
NOTE:
Compressor operational condition
• Thermo control amp. signal ON
• Blower fan signal ON
• A/C switch signal ON

• ECM judges the conditions of each sensor (Refrigerant pressure sensor signal, accelerator position signal,

etc.), and transmits the A/C compressor request signal to IPDM E/R via CAN communication line.

• By receiving the A/C compressor request signal from ECM, IPDM E/R turns the A/C relay to ON, and acti-

vates the compressor.

Compressor Protection Control at Pressure Malfunction

The high-pressure side value that is detected by refrigerant pressure sensor is as per the following state, ECM
requests IPDM E/R to turn A/C relay OFF and stop the compressor.
• 3.12 MPa (31.8 kg/cm

2

, 452 psi) or more (When the engine speed is less than 1,500 rpm)

1.

A/C switch

2.

Fan control dial

3.

Rear window defogger switch

4.

MODE dial

5.

Intake switch

6.

Temperature control dial

A/C switch

The compressor control (switch indicator) is turned ON 

 OFF each time by pressing this switch 

while the blower motor is activated.
NOTE:
when mode position is D/F or DEF, A/C switch is turned ON forcibly.

Fan control dial

Fan speed can be adjusted within a range from 1st to 4th. 

Rear window defogger 
switch

• Rear window defogger (switch indicator) is turned ON 

 OFF each time by pressing this switch.

• Rear window defogger system details, Refer to 

DEF-4, "System Description"

.

MODE dial

• Mode position is selected to an optimal position by operating this dial.
• When DEF or D/F is selected while blower motor is activated, the air conditioner will automatically 

turn on and the air inlet becomes fresh air intake.

Intake switch

The air inlet changed ON 

 OFF each time by pressing this switch.

• Indicator ON: Recirculation
• Indicator OFF: Fresh air intake
NOTE:
when mode position is D/F or DEF, air inlet is set to FRE forcibly.

Temperature control dial

The setting temperature can be selected to an optimum temperature by operating this dial.

JPIIA1674ZZ

MANUAL AIR CONDITIONING SYSTEM

HAC-143

< SYSTEM DESCRIPTION >

[MANUAL AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

• 2.74 MPa (27.9 kg/cm

2

, 397 psi) or more (When the engine speed is 1,500 rpm or more)

• 0.14 MPa (1.4 kg/cm

2

, 20 psi) or less

Low Temperature Protection Control

• When the thermo control amp. detects that evaporator surface

temperature is 2

°

C (36

°

F) or less, thermo control amp. signal

becomes OFF, and stops the compressor.

• When the air temperature returns to 3.5

°

C (38

°

F) or more, the

compressor is activated.

Operating Rate Control

• Thermo control amp. detects the positions of air temperature control dial and MODE dial.
• Thermo control amp. corrects the stopping temperature of A/C compressor depending on the condition of A/

C operation, and prevents too much heating by turning thermo control amp. ON 

 OFF.

Air conditioner Cut Control

When the engine condition is high load, ECM makes the A/C relay to OFF, and stops the compressor. Refer to

EC-58, "System Description"

.

SWITCHES AND THEIR CONTROL FUNCTIONS

SJIA0802E

1.

Intake door

2.

Blower motor

3.

In-cabin microfilter

4.

Evaporator

5.

Upper air mix door

6.

Lower air mix door

7.

Heater core

8.

Foot door

9.

Side ventilator door

10. Sub defroster door

11.

Center ventilator and defroster door

JPIIA1584ZZ

HAC-144

< SYSTEM DESCRIPTION >

[MANUAL AIR CONDITIONING]

MANUAL AIR CONDITIONING SYSTEM

*With rear foot duct

AIR DISTRIBUTION 

Without Rear Foot Duct

With Rear Foot Duct

Fresh air intake

Recirculation air

Defroster

Center ventilator

Side ventilator

Foot

Rear foot*

Switch/Dial

position

Door position

Ce

nt

er v

e

n

til

ato

r a

nd 

de

fr

os

te

r do

or

Su

b d

e

fr

os

ter 

do

or

Si

d

e

 ve

nt

ila

tor do

or

Fo

ot

 do

or

In

ta

k

e

 do

or

Up

pe

a

ir m

ix

 do

or

Lo

we

a

ir m

ix

 do

or

MODE dial

P

M

L

G

K

H

Q

O

J

I

N

M

G

Intake switch

A

B

Temperature con-

trol dial

Full cold

D

E

Full hot

C

F

Discharge air flow

Mode position indication

Air outlet/distribution

Ventilator

Foot

Defroster

100%

63%

37%

16%

64%

20%

14%

55%

31%

18%

82%

Discharge air flow

Mode position indication

Air outlet/distribution

Ventilator

Front foot

Rear foot

Defroster

100%

57%

29%

14%

19%

44%

19%

18%

17%

40%

17%

26%

18%

82%

MANUAL AIR CONDITIONING SYSTEM

HAC-145

< SYSTEM DESCRIPTION >

[MANUAL AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

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P

Component Part Location

INFOID:0000000009951058

Component Description

INFOID:0000000009951059

1.

Magnet clutch

2.

Refrigerant pressure sensor

3.

A/C control

4.

Blower motor

5.

Blower fan resistor

6.

Intake door motor

7.

Thermo control amp.

A.

Located in the right side of A/C unit 
assembly

B.

Located in the back of A/C unit as-
sembly

C.

Located in the left side of A/C unit as-
sembly

D.

Located on evaporator

JPIIA1740ZZ

Component

Reference/Function

Magnet clutch

HAC-158, "Description"

Refrigerant pressure sensor

EC-425, "Description"

 

A/C control

Controls the air conditioner function.

 

 

 

 

 

 

 

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