Nissan Qashqai J11. Manual — part 1152
HAC-244
< SYSTEM DESCRIPTION >
[MANUAL HEATER ]
SYSTEM
SYSTEM
MANUAL HEATER SYSTEM
MANUAL HEATER SYSTEM : System Description
INFOID:0000000010433405
SYSTEM DIAGRAM
DESCRIPTION
• Manual heater system is controlled by each function of A/C amp.and ECM.
• Each operation of heater system can be controlled by heater control (built-in A/C amp.).
CONTROL BY A/C AMP.
•
HAC-244, "MANUAL HEATER SYSTEM : Air Inlet Control"
•
HAC-245, "MANUAL HEATER SYSTEM : Door Control"
•
HAC-247, "MANUAL HEATER SYSTEM : Door Motor Starting Position Reset Control"
• Correction for input value
Ambient temperature correction
- A/C amp. inputs the temperature detected by ambient sensor as the ambient temperature.
- A/C amp. performs the correction of the temperature detected by ambient sensor for air conditioning control.
- A/C amp. selects and uses the initial value of ambient temperature data depending on the engine coolant
temperature when turning the ignition switch from OFF to ON. The detection temperature of the ambient
sensor is used when engine coolant temperature is low [less than approximately 56
°
C (133
°
F)]. The mem-
ory data (before the ignition switch is OFF) when the engine is warmed up [approximately 56
°
C (133
°
F) or
more].
- The correction of the ambient temperature is not performed when the detection temperature of the ambient
temperature is less than approximately
−
20
°
C (–4
°
F).
MANUAL HEATER SYSTEM : Air Inlet Control
INFOID:0000000010433409
DESCRIPTION
• A/C amp. controls the intake door motor and switches the air inlets.
• When the following conditions are met, A/C amp. controls the air inlets to 20% recirculation. (However, this
does not occur when high water temperature control is in effect.)
At this time, the intake switch indicator lamp turns OFF.
JMIIA3579GB
SYSTEM
HAC-245
< SYSTEM DESCRIPTION >
[MANUAL HEATER ]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
- Fan control dial: 21th - 24th
- Temperature control dial: Full hot
- Air outlet mode: DF ON or DEF ON
HIGH ENGINE COOLANT TEMPERATURE CONTROL
When either of the following conditions is met, A/C amp. changes the air inlets to recirculation.
Condition 1
• Air outlet: Other than D/F or DEF
• Ambient temperature: More than 25
°
C (77
°
F)
• Vehicle speed: 30 km/h or more
• Engine coolant temperature: 105
°
C (221
°
F) or more
Condition 2
• Air outlet: D/F or DEF
• Air inlet: Fresh air intake
• Ambient temperature: More than 25
°
C (77
°
F)
• Vehicle speed: 30 km/h or more
• Engine coolant temperature: 105
°
C (221
°
F) or more
MANUAL HEATER SYSTEM : Door Control
INFOID:0000000010433411
SWITCH AND THEIR CONTROL FUNCTION
Intake door
Blower motor
Air conditioner filter
Heater core
PTC heater
Air mix door
Foot door
Side ventilator door
Sub defroster door
Center ventilator and defroster door
Fresh air
Recirculation air
Discharge air
JMIIA3580ZZ
HAC-246
< SYSTEM DESCRIPTION >
[MANUAL HEATER ]
SYSTEM
*1: Not applicable
*2: With rear foot duct
NOTE:
The sub-defroster and side ventilator door include a permanent opening and does not fully close.
*: Air inlet status is displayed by indicator during activating automatic control
AIR DISTRIBUTION
Without rear ventilator, without rear foot
Defroster
Center ventilator
Side ventilator
Rear ventilator
*1
Front foot
Rear foot
*2
Switch/dial position
Door position
Mode door
Intake door
Air mix
door
Cen
te
r ve
nt
ila
to
r an
d d
e
fr
os
ter
do
or
Su
b d
e
fr
os
te
r do
or
Si
de
ve
nt
ila
tor
do
or
Fo
ot do
or
MODE VENT switch
VENT
—
—
MODE B/L switch
Bi-level (B/L)
MODE FOOT switch
FOOT
MODE D/F switch
DEF/FOOT (D/F)
MODE DEF switch
DEF
INTAKE switch
—
—
—
—
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%
SYSTEM
HAC-247
< SYSTEM DESCRIPTION >
[MANUAL HEATER ]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Without rear ventilator, with rear foot
MANUAL HEATER SYSTEM : Door Motor Starting Position Reset Control
INFOID:0000000010519453
• 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
PTC HEATER CONTROL SYSTEM : System Description
INFOID:0000000010502942
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).
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%
JMIIA3583GB
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