Nissan Qashqai J11. Manual - part 1130

HAC-156

< SYSTEM DESCRIPTION >

[MANUAL AIR CONDITIONING]

SYSTEM

AIR DISTRIBUTION

Without rear ventilator, without rear foot

*: These positions are applied only to models for Europe and Russia.

Without rear ventilator, with rear foot

INTAKE switch

REC

—

—

—

—

FRE

Temperature control dial

Full cold

—

Full cold – Full hot

 – 

Full hot

Discharge air flow

MODE position

Air outlet/distribution

Ventilator

Front foot

Defroster

Center

Side

V/D*

40%

35%

—

25%

VENT

54%

46%

—

—

B/L

31%

40%

29%

—

ALL*

21%

34%

31%

14%

FOOT

—

10%

58%

32%

D/F

—

9%

43%

48%

DEF

—

10%

—

90%

Switch/dial position

Door position

Mode door

Intake 

door

Air mix 

door

Ce

nte

r v

e

n

tila

to

r an

d 

de

fros

te

r do

or

Su

b de

fr

os

te

r do

or

Si

de

 ve

nt

ila

to

r do

or

Fo

ot

 do

or

Discharge air flow

MODE position

Air outlet/distribution

Ventilator

Foot

Defroster

Center

Side

Front

Rear

V/D

40%

35%

—

—

25%

VENT

54%

46%

—

—

—

B/L

33%

40%

16%

11%

—

ALL

22%

35%

16%

11%

16%

FOOT

—

11%

32%

25%

32%

D/F

—

8%

24%

19%

49%

DEF

—

10%

—

—

90%

SYSTEM

HAC-157

< SYSTEM DESCRIPTION >

[MANUAL AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

With rear ventilator, with rear foot

MANUAL AIR CONDITIONING SYSTEM : Cooling Fan Control

INFOID:0000000010519431

DESCRIPTION

A/C amp. controls the cooling fan operation request according to the refrigerant pressure status and vehicle
speed status.
NOTE:
For an overview of the cooling fan and information about control, refer to 

ECH-33, "COOLING FAN CONTROL

: System Description"

 (HR engine models), 

ECM-74, "COOLING FAN CONTROL : System Description"

(MR16DDT engine models), 

ECM-654, "COOLING FAN CONTROL : System Description"

 (MR20DD engine

models) 

ECK-34, "COOLING FAN CONTROL : System Description"

 (K9K engine models) or 

EC9-37, "COOL-

ING FAN CONTROL : System Description"

 (R9M engine models).

CONTROL OUTLINE

• A/C amp. receives the refrigerant pressure sensor signal from ECM via CAN communication, and the vehi-

cle speed signal from the combination meter via CAN communication.

• A/C amp. sets one of the optionally determined stages according to the received refrigerant pressure sensor

signal and vehicle speed signal.
NOTE:
For the rules that prescribe the predetermined stages, refer to the following figures.
• Vehicle speed stages

Vehicle speed [Km/h (MPH)]

-

: 12 (7.5)

-

: 20 (12)

-

: 72 (45)

-

: 80 (50)

• Refrigerant pressure stages (for Europe and Russia)

Refrigerant pressure [MPa (bar, kg/cm

2

, psi)]

-

: 0.7 (7, 7.14, 102)

-

: 1.0 (10, 10.2, 145)

-

: 1.28 (12.8, 13.1, 186)

-

: 1.58 (15.8, 16.1, 229)

-

: 1.88 (18.8, 19.2, 273)

-

: 2.08 (20.8, 21.2, 302)

Discharge air flow

MODE position

Air outlet/distribution

Ventilator

Foot

Defroster

Front

Rear

Front

Rear

Center

Side

V/D

39%

27%

11%

—

—

23%

VENT

47%

38%

15%

—

—

—

B/L

25%

34%

13%

18%

10%

—

ALL

21%

27%

11%

20%

10%

11%

FOOT

—

7%

4%

38%

24%

27%

D/F

—

6%

2%

30%

17%

45%

DEF

—

8%

2%

—

—

90%

JMIIA3568GB

JMIIA3569GB

HAC-158

< SYSTEM DESCRIPTION >

[MANUAL AIR CONDITIONING]

SYSTEM

• Refrigerant pressure stages (except for Europe and Russia)

Refrigerant pressure [MPa (bar, kg/cm

2

, psi)]

-

: 0.7 (7, 7.14, 102)

-

: 1.0 (10, 10.2, 145)

-

: 1.08 (10.8, 11.0, 157)

-

: 1.38 (13.8, 14.1, 200)

-

: 1.68 (168, 17.1, 244)

• The requested cooling fan operation strength (0%, 40%, 100%%) is determined as shown in the following

table according to the combination of these two stages, and the request signal is transmitted to ECM via
CAN communication.

Cooling fan operation strength

Unit: %

MANUAL AIR CONDITIONING SYSTEM : Door Motor Starting Position Reset Control

INFOID:0000000010519452

• Step motors are used for the mode door motor air mix door motor, and intake door motor.
• Because the step motors do not have position detection mechanisms, there may be a deviation between the

door position recognized by A/C amp. and the actual door position.
Therefore, A/C amp. performs motor zero position reset for aligning its recognized door position with the
actual door position.

• The reset signal is transmitted from A/C amp. to the air mix door motor, mode door motor, and intake door

motor, which then perform zero position reset.

• After any of the following conditions is met, A/C amp. performs motor zero position reset when the ignition

switch is next turned ON.

- The ignition switch is turned from ON to OFF a total of 360 times.
- The ignition switch turns OFF while the mode door motor, air mix door motor, or intake door motor is operat-

ing.

• If A/C amp., air mix door motor, mode door motor, or intake door motor is removed, it is necessary to perform

motor zero position reset using CONSULT.

PTC HEATER CONTROL SYSTEM

JMIIA3577GB

—

Refrigerant pressure stages

1

2

3

4

Vehicle speed stag-
es

1

40

40

100

100

2

40

40

100

100

3

0

0

0

100

SYSTEM

HAC-159

< SYSTEM DESCRIPTION >

[MANUAL AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

PTC HEATER CONTROL SYSTEM : System Description

INFOID:0000000010502884

SYSTEM DIAGRAM

DESCRIPTION

• BCM performs PTC relay ON/OFF control based on engine speed, engine coolant temperature, electrical

power cut freeze signal (permission signal, retention signal, stop signal), blower motor operation state sig-
nal, front window defogger state signal, ambient temperature signal, battery voltage, and electrical load state
(high beam request, low beam request, and others).

• When PTC relay turns ON, power supply is supplied to PTC heater. Heating element is heated and air flow

temperature is increased. Heating is available for a period of time until engine coolant temperature is
increased when engine starts cold in cold climate.

• Idle up request signal is transmitted from BCM to ECM while PTC heater operates. Idle speed is increased,

warming-up is facilitated, and battery electric power is obtained.

• Electric power supplied to PTC heating element is subject to PTC relay control conditions. 

NOTE:
PTC heater operation depends on ambient temperature and battery voltage. PTC heater is ON when ambient
temperature is 8

°

C or less. PTC heater is OFF when ambient temperature is 12

°

C (53.6

°

F) or more. PTC

heater is ON when battery voltage is 11.5 V or more. PTC heater is OFF when battery voltage is 11 V or less.

JMIIA3583GB

PTC heater

Operation

PTC relay-1

PTC relay-2

PTC relay-3

Electric power (W)

OFF

OFF

OFF

OFF

OFF

Approx. 0

PTC heater-1

LOW

ON

OFF

OFF

Approx. 333

PTC heater-2

MID

ON

ON

OFF

Approx. 666

PTC heater-3

HI

ON

ON

ON

Approx. 999