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]
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J
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A
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HAC
N
O
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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
(HR engine models),
ECM-74, "COOLING FAN CONTROL : System Description"
ECM-654, "COOLING FAN CONTROL : System Description"
(MR20DD engine
ECK-34, "COOLING FAN CONTROL : System Description"
(K9K engine models) or
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]
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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
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