Juke F15 (2012 year). Service Repair Manual — part 235
COMPONENT PARTS
HAC-15
< SYSTEM DESCRIPTION >
[TYPE 1]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
A/C UNIT ASSEMBLY : Power Transistor
INFOID:0000000006545791
• Power transistor, that uses MOS field effect transistor, is adopted
for blower motor speed control.
NOTE:
MOS field effect transistor is a transistor for which the gate portion
is composed of a metal electrode on an oxide layer of semiconduc-
tor. Field effect transistor is controlled by voltage, while ordinary
transistor is controlled by current. Electrode of field effect transistor
is called source, drain, or gate, while electrode of ordinary transis-
tor is called emitter, collector, or base.
• Power transistor continuously controls voltage to blower motor,
according to gate voltage from A/C auto amp.
• This power transistor does not require a HI relay even when the
maximum voltage is applied to blower motor at HI status, because voltage drop is nominal.
Multi Display Unit
INFOID:0000000006626863
• Multi display unit integrates display and operation switches.
• Operation of each switch (A/C operation signal) and setting status (A/C ECO setting signal and ECO mode
signal) are transmitted to A/C auto amp. via CAN communication.
• Operation status of air conditioning system is indicated in the display according to A/C display signal that is
received from A/C auto amp.
A/C Auto Amp.
INFOID:0000000006545792
A/C auto amp. controls automatic air conditioning system by inputting and calculating signals from each sen-
sor and each switch. A/C auto amp. has self-diagnosis function. Diagnosis of automatic air conditioning sys-
tem can be performed quickly.
BCM
INFOID:0000000006545793
BCM transmits A/C ON signal and blower fan ON signal from A/C auto amp. to ECM via CAN communication
line.
ECM
INFOID:0000000006545794
• ECM, when receiving A/C ON signal and blower fan ON signal from BCM, transmits A/C compressor request
signal to IPDM E/R via CAN communication according to status of the engine and refrigerant pressure.
• ECM transmits engine coolant temperature signal to A/C auto amp. via CAN communication line.
IPDM E/R
INFOID:0000000006545795
A/C relay is integrated in IPDM E/R. IPDM E/R operates A/C relay when A/C compressor request signal is
received from ECM via CAN communication line.
Ambient Sensor
INFOID:0000000006545797
Ambient sensor measures ambient air temperature. The sensor uses a thermistor which is sensitive to the
change in temperature. The electrical resistance of the thermistor decreases as temperature increases.
ZHA152H
JPIIA1634ZZ
HAC-16
< SYSTEM DESCRIPTION >
[TYPE 1]
COMPONENT PARTS
In-vehicle Sensor
INFOID:0000000006545798
In-vehicle sensor measures temperature of intake air that flows through aspirator to passenger room. The sen-
sor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the ther-
mistor decreases as temperature increases.
Sunload Sensor
INFOID:0000000006545799
Sunload sensor measures sunload amount. This sensor converts sunload amount to voltage signal by photo-
diode and transmits to A/C auto amp.
Refrigerant Pressure Sensor
INFOID:0000000006545800
DESCRIPTION
• The refrigerant pressure sensor converts high-pressure side refrigerant pressure into voltage and outputs it
to ECM.
• ECM operates cooling system protection and idle speed control according to voltage value that is input.
STRUCTURE AND OPERATION
• The refrigerant pressure sensor is a capacitance type sensor. It consists of a pressure detection ares and a
signal processing area.
• The pressure detection area, which is a variable capacity condenser, changes internal static capacitance
according to pressure force.
• The signal processing area detects the static capacitance of the pressure detection area, converts the static
capacitance into a voltage value, and transmits the voltage value to ECM.
Magnet Clutch
INFOID:0000000006545801
Compressor is driven by the magnet clutch which is magnetized by electric power supply.
PBIB2657E
SYSTEM
HAC-17
< SYSTEM DESCRIPTION >
[TYPE 1]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
SYSTEM
System Diagram
INFOID:0000000006545802
System Description
INFOID:0000000006545803
DESCRIPTION
• Automatic air conditioning system is controlled by each function of A/C auto amp., BCM, ECM and IPDM E/
R.
• Each operation of air conditioning system is transmitted from multi display unit via CAN communication. A/C
auto amp. transmits each type of indication information to multi display unit via CAN communication. Multi
display unit displays each type of indication information that is received.
CONTROL BY A/C AUTO AMP.
•
•
•
•
•
•
•
• Correction for input value
Ambient temperature correction
- The A/C auto amp. inputs the temperature detected with the ambient sensor as the ambient temperature.
JMIIA1049GB
HAC-18
< SYSTEM DESCRIPTION >
[TYPE 1]
SYSTEM
- Perform the correction of the temperature detected with the ambient sensor for air conditioning control.
- Select and use the initial value of ambient temperature data depending on the engine coolant temperature
when turning the ignition switch from OFF to ON. Use the detection temperature of the ambient sensor at
low coolant temperature [less than approximately 56
°
C (133
°
F)]. Use the memory data (before the ignition
switch is OFF) when the engine is warming up [approximately 56
°
C (133
°
F) or more].
- Do not perform the correction of the ambient temperature when the detection temperature of the ambient
temperature is less than approximately
−
20
°
C (–4
°
F).
Passenger room temperature correction
- The A/C auto amp. inputs the temperature detected with the in-vehicle sensor as the passenger room tem-
perature.
- Perform the correction of the temperature detected with the in-vehicle sensor for air conditioning control.
- The A/C auto amp. performs the correction so that the recognition passenger room temperature changes
depending on the difference between the detected passenger room temperature and the recognition pas-
senger room temperature. If the difference is large, the changing is early. The changing becomes slow as
the difference becomes small.
Intake temperature correction
- The A/C auto amp. inputs the temperature detected with the intake sensor as the intake temperature.
- Perform the correction of the temperature detected with the intake sensor for air conditioning control.
- The A/C auto amp. performs the correction so that the recognition intake temperature changes depending
on the difference between the detected intake temperature and the recognition intake temperature. If the dif-
ference is large, the changing is early. The changing becomes slow as the difference becomes small.
Sunload amount correction
- The A/C auto amp. inputs the sunload amount detected with the sunload sensor.
- Perform the correction of the sunload amount detected with the sunload sensor for air conditioning control.
- When the sunload amount suddenly changes, for example when entering a tunnel, perform the correction so
that the recognition sunload amount of the A/C auto amp. changes slowly.
Set temperature correction
- A/C auto amp. controls The A/C auto amp. performs the correction to the target temperature set by the tem-
perature control switch so as to match the temperature felt by the passengers depending on the ambient
temperature detected with the ambient sensor and controls it so that the interior air temperature is always
the most suitable.
CONTROL BY BCM
•
CONTROL BY ECM
•
• Cooling fan control. Refer to
EC-61, "COOLING FAN CONTROL : System Description"
.
CONTROL BY IPDM E/R
•
• Cooling fan control. Refer to
PCS-9, "POWER CONTROL SYSTEM : System Description"
(with Intelligent
Key) or
PCS-41, "POWER CONTROL SYSTEM : System Description"
(without Intelligent Key).
Temperature Control
INFOID:0000000006545804
• When ignition switch is in the ON position, A/C auto amp. always
automatically controls temperature regardless of air conditioner
operational state.
• A/C auto amp. calculates the target air mix door opening angle
depending on set temperature, in-vehicle temperature, ambient
temperature, and sunload.
• Air mix door is controlled depending on the comparison of current
air mix door opening angle and target air mix door opening angle.
• Regardless of in-vehicle temperature, ambient temperature, and
sunload, air mix door is fixed at the fully cold position when set
temperature is 18
°
C (60
°
F), and at the fully hot position when set
temperature is 32
°
C (90
°
F).
JPIIA0633GB
SYSTEM
HAC-19
< SYSTEM DESCRIPTION >
[TYPE 1]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Air Outlet Control
INFOID:0000000006545805
• While air outlet is in automatic control, A/C auto amp. selects the
mode door position depending on a target air mix door angle and
outlet air temperature calculated from sunload.
• If ambient temperature is excessively low, D/F is selected to pre-
vent windshield fogging when air outlet is set to FOOT.
Air Flow Control
INFOID:0000000006545806
DESCRIPTION
• A/C auto amp. changes duty ratio of blower motor drive signal and controls air flow continuously. When air
flow is increased, duty ratio of blower motor drive signal gradually increases to prevent a sudden increase in
air flow.
• In addition to manual control and automatic control, air flow control is compose of starting fan speed control,
low coolant temperature starting control, high in-vehicle temperature starting control, and blower speed con-
trol at door motor operation.
AUTOMATIC AIR FLOW CONTROL
• A/C auto amp. decides target air flow depending on target air mix door opening angle.
• A/C auto amp. changes duty ratio of blower motor drive signal and controls air flow continuously so that air
flow matches to target air flow.
• When air outlet is VENT or B/L, the minimum air flow is changed
depending on sunload.
STARTING FAN SPEED CONTROL
When blower motor is activated, A/C auto amp. gradually increases duty ratio of blower fan drive signal to pre-
vent a sudden increase in discharge air flow. (T
1 –
T
2
= approximately 10 seconds)
NOTE:
Do not perform the starting air flow control when the discharge outlet
is set to DEF.
LOW COOLANT TEMPERATURE STARTING CONTROL
JMIIA0710GB
JMIIA1129GB
JMIIA1130GB
HAC-20
< SYSTEM DESCRIPTION >
[TYPE 1]
SYSTEM
If the engine coolant temperature is 56
°
C (133
°
F) or less, to prevent
a cold discharged air flow, A/C auto amp. suspends blower motor
activation for the maximum 100 seconds depending on target air mix
door opening angle. After this, blower fan drive signal is increased
gradually, and blower motor is activated.
FAN SPEED CONTROL AT DOOR MOTOR OPERATION
When mode door motor is activated while air flow is more than the specified value, A/C auto amp. reduces
temporarily fan speed so that mode door moves smoothly.
HIGH IN- TEMPERATURE STARTING CONTROL
When evaporator temperature is high [intake air temperature sensor value is 35
°
C (95
°
F) or more], to prevent
a hot discharged air flow, A/C auto amp. suspends blower motor activation for approximately 3 seconds so
that evaporator is cooled by refrigerant.
Air Inlet Control
INFOID:0000000006545807
• While air inlet is in automatic control, A/C auto amp. selects air
inlet (fresh air intake, 20% fresh air intake, or recirculation)
depending on set temperature, in-vehicle temperature, and ambi-
ent temperature.
• Air inlet is fixed to 80% FRE, only when the conditions are satisfied
as follows:
- Air inlet is FOOT or D/F
- Ambient temperature is 2
°
C (36
°
F) or less
- Maximum fan speed
Compressor Control
INFOID:0000000006545808
DESCRIPTION
• When the compressor activation condition is satisfied while blower motor is activated, A/C auto amp. trans-
mits A/C ON signal and blower fan ON signal to BCM.
• BCM transmits the A/C ON signal and blower fan ON signal to ECM via CAN communication line.
- With Intelligent Key system: Refer to
BCS-13, "SIGNAL BUFFER SYSTEM : System Description"
.
- Without Intelligent Key system: Refer to
BCS-103, "SIGNAL BUFFER SYSTEM : System Description"
• 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.
- With Intelligent Key system: Refer to
PCS-6, "RELAY CONTROL SYSTEM : System Description"
.
- Without Intelligent Key system: Refer to
PCS-38, "RELAY CONTROL SYSTEM : System Description"
CONTROL BY A/C AUTO AMP.
Low Temperature Protection Control
JMIIA1131GB
JMIIA0711GB
SYSTEM
HAC-21
< SYSTEM DESCRIPTION >
[TYPE 1]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
When intake sensor detects that evaporator surface temperature is
2
°
C (36
°
F) or less, A/C auto amp. requests ECM to turn the com-
pressor OFF, and stops the compressor.
When the air temperature returns to 3.5
°
C (38
°
F) or more, the com-
pressor is activated.
CONTROL BY ECM
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 (31.82 kg/cm
2
, 452.4 psi) or more (When the engine speed is less than 1,500 rpm)
• 2.74 MPa (27.95 kg/cm
2
, 397.3 psi) or more (When the engine speed is 1,500 rpm or more)
• 0.14 MPa (1.43 kg/cm
2
, 20.3 psi) or less
Compressor Oil Circulation Control
When the engine starts while the engine coolant temperature is 56
°
C (133
°
F) or less, ECM activates the com-
pressor for approximately 6 seconds and circulates the compressor oil once.
Air Conditioning Cut Control
When the engine condition is high load, ECM makes the A/C relay to OFF, and stops the compressor. Refer to
EC-60, "AIR CONDITIONING CUT CONTROL : System Description"
.
Door Control
INFOID:0000000006545809
DOOR MOTOR CONTROL
• A/C auto amp. receives the detection data from each sensor.
• Intake door motor, when receiving control signal from A/C auto amp. moves intake door to the appropriate
position based on the door position detection signal of each PBR (Potentio Balance Resistor).
• Each motor of air mix and mode, when receiving drive signal from A/C auto amp., moves each door to the
appropriate position according to drive signal.
DRIVE METHOD OF STEPPING MOTOR TYPE MOTOR
• Stepping motor type motor is driven by 4 pieces of drive coil that are sequentially excited.
• Direction of rotation is changeable by recomposing pattern of excitation.
SWITCH AND THEIR CONTROL FUNCTION
JMIIA1055GB
SJIA0971E
HAC-22
< SYSTEM DESCRIPTION >
[TYPE 1]
SYSTEM
*: With rear foot duct
1.
Intake door
2.
Blower motor
3.
Air conditioner filter
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
Fresh air intake
Recirculation air
Defroster
Center ventilator
Side ventilator
Foot
Rear foot
*
Switch/dial position
Door position
Ce
n
te
r ve
nt
ila
to
r an
d d
e
fr
os
te
r do
or
Su
b d
e
fr
os
ter
do
or
Si
de
ve
nt
ila
tor do
or
F
o
ot
do
or
In
ta
ke
do
or
Up
pe
r ai
r mi
x
do
or
L
o
we
r ai
r mi
x
do
or
AUTO switch
AUTO
JPIIA1584ZZ
SYSTEM
HAC-23
< SYSTEM DESCRIPTION >
[TYPE 1]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
*: Previous setting before turning air conditioning system OFF (FOOT when previous setting is automatic con-
trol).
AIR DISTRIBUTION
Without rear foot duct
With rear foot duct
MODE switch
VENT
P
M
L
G
—
—
—
B/L
N
K
H
FOOT
Q
O
J
I
D/F
N
DEF switch
M
G
Intake switch
—
—
—
—
A
B
Temperature control dial
Full cold
(16
°
C)
—
D
E
16.5
°
C – 29.5
°
C
AUTO
AUTO
Full hot
(30
°
C)
C
F
OFF switch
P or Q
*
M – O
*
J – L
*
G – I
*
B
—
—
Switch/dial position
Door position
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
v
ent
ila
to
r do
or
Fo
ot
do
or
In
ta
ke
do
or
Up
pe
r ai
r mi
x do
or
L
o
we
r ai
r mi
x do
or
Discharge air flow
MODE/DEF setting po-
sition
Air outlet/distribution
Ventilator
Foot
Defroster
Center
Side
52.6%
47.3%
—
—
34.0%
27.7%
38.4%
—
—
19.1%
57.9%
23.0%
—
13.5%
42.4%
44.1%
—
16.3%
—
83.8%
Discharge air flow
MODE/DEF setting
position
Air outlet/distribution
Ventilator
Foot
Defroster
Center
Side
Front
Rear
52.6%
47.3%
—
—
—
28.2%
25.9%
29.6%
16.3%
—
—
16.3%
43.0%
21.0%
19.7%
HAC-24
< SYSTEM DESCRIPTION >
[TYPE 1]
SYSTEM
ECO Mode Control
INFOID:0000000006626864
DESCRIPTION
• A/C auto amp. receives operation status of each switch (A/C operation signal), D-MODE setting status (ECO
mode signal), and “CLIMATE ECO” setting status (A/C ECO setting signal) from multi display unit via CAN
communication.
• A/C auto amp. operates air conditioning system in ECO mode, when D-MODE on multi display unit is set to
ECO mode while air conditioning system is in automatic control.
NOTE:
• For setting procedure of D-MODE, refer to
AV-99, "NISSAN DYNAMIC CONTROL SYSTEM : System
• Activation or deactivation of ECO mode can be changed using multi display unit setting function (“CLI-
MATE ECO”). For setting procedure, refer to
AV-99, "NISSAN DYNAMIC CONTROL SYSTEM : System
CONTROL OUTLINE
During ECO mode operation, A/C auto amp. changes air flow and control characteristics of air inlet, within a
range that may not spoil the comfort level, lowers operation ratio of compressor, and reduces the electrical
load. This reduces engine load and improved fuel economy. Refer to the following items for details of each
control.
Air Flow Control
• A/C auto amp. increases voltage to power transistor gate compared to ordinary operation and reduces volt-
age to blower motor. This reduces air flow.
• Since air flow is reduced, the amount of air that passes evaporator is reduced. Increase of evaporator tem-
perature can be moderated. Evaporator temperature is easily shifted to temperature control range for low
temperature protection control. Operation ratio of evaporator is reduced.
• Since air flow is reduced, the electrical load is reduced. Alternator power output can be moderated.
Air Inlet Control
• In the following conditions, A/C auto amp. controls air inlet and increases recirculation air mixing ratio com-
pared to ordinary operation.
- Ambient temperature: 25
°
C (77
°
F) or more
- Temperature setting: Any temperature other than full cold (16
°
C) or full hot (30
°
C)
- Air outlet: In automatic control
- Air flow: In automatic control
- Air inlet: In automatic control or in fresh air intake mode by manual control
- A/C switch: ON
• By increasing recirculation air mixing ratio, cooled air in passenger room is circulated in larger amount than
during ordinary operation. Air temperature blowing to evaporator is maintained at a low level. Evaporator
temperature increase can be moderated. Evaporator temperature is easily shifted to temperature control
range for low temperature protection control. Operation ratio of evaporator is reduced.
Fail-safe
INFOID:0000000006692466
FAIL-SAFE FUNCTION
If a communication error exists between the A/C auto amp. and multi display unit for 2 seconds or longer, air
conditioning is controlled under the following conditions:
—
12.2%
33.1%
16.3%
38.4%
—
16.3%
—
—
83.8%
Discharge air flow
MODE/DEF setting
position
Air outlet/distribution
Ventilator
Foot
Defroster
Center
Side
Front
Rear
A/C display
: OFF
Set temperature
: Setting before communication error occurs
Air outlet
: AUTO
SYSTEM
HAC-25
< SYSTEM DESCRIPTION >
[TYPE 1]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Air flow
: AUTO
Air inlet
: FRE (Fresh air intake)
A/C switch
: ON
HAC-26
< SYSTEM DESCRIPTION >
[TYPE 1]
OPERATION
OPERATION
Switch Name and Function
INFOID:0000000006626865
OPERATION AND DISPLAY
A/C Display (Display in Multi Display Unit)
• Air conditioning system operation status is indicated on display in multi display unit. Indication of air condi-
tioning system varies according to display mode of multi display unit. For changing procedure of display
mode, refer to
AV-99, "NISSAN DYNAMIC CONTROL SYSTEM : System Description"
.
- In CLIMATE mode: Operation status of air conditioning system (setting temperature, air flow, and “AUTO”
*1
)
is indicated on display when air conditioning system is turned ON.
- In D-MODE: Operation status of air conditioning system (setting temperature, A/C switch, and “AUTO”
*2
) is
indicated on lower portion of display when air conditioning system is turned ON.
NOTE:
*1: AUTO is indicated when both air flow and air outlet are in automatic control.
*2: Air Flow is indicated when air flow or air outlet is in manual control.
A/C Controller (Multi Display Unit)
Operation procedure of air conditioning system varies depending on display mode of multi display unit. For
changing procedure of display mode, refer to
AV-99, "NISSAN DYNAMIC CONTROL SYSTEM : System
.
• In CLIMATE mode: All operations of air conditioning system are possible.
JMIIA1050GB
1.
A/C switch
2.
OFF switch
3.
Temperature control dial
4.
AUTO switch
5.
MODE switch (D/F)
6.
DEF switch
7.
Intake switch
8.
Display
9.
MODE switch (FOOT)
10. Fan control dial
11.
MODE switch (B/L)
12. MODE switch (VENT)
JMIIA1051ZZ
OPERATION
HAC-27
< SYSTEM DESCRIPTION >
[TYPE 1]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
A/C switch
• Compressor control (switch indicator) changes between ON
⇔
OFF each time when switch is
pressed while air conditioning system is in the ON position.
• Air conditioning system turns ON and operates according to the following setting when switch is
pressed while air conditioning system is in the OFF position.
- Air outlet: Previous setting before turning air conditioning system OFF.
- Air flow: 1st speed (manual control)
- Air inlet: Previous setting before turning air conditioning system OFF.
- A/C switch: ON
OFF switch
Air conditioning system turns ON
⇔
OFF each time when switch is pressed.
• When switch is pressed while air conditioning system is in the ON position
- Air conditioning system turns OFF and changes to the following status when switch is pressed.
• Air outlet: Previous setting before turning air conditioning system OFF (FOOT when previous set-
ting is automatic control).
• Air flow: OFF.
• Air inlet: Fresh air intake (switch indicator turns OFF)
• A/C switch: OFF
• When switch is pressed while air conditioning system is in the OFF position (Previous setting before
turning air conditioning system OFF is other than DEF mode).
- Air conditioning system turns ON and operates according to the previous setting before turning air
conditioning system OFF when switch is pressed.
• When switch is pressed while air conditioning system is in the OFF position (Previous setting before
turning air conditioning system OFF is DEF mode).
- Air conditioning system turns ON and operates according to the following setting when switch is
pressed.
• Air outlet: Automatic control
• Air flow: Automatic control
• Air inlet: Automatic control
• A/C switch: ON
Temperature control dial
Setting temperature can be set within a range of 16
°
C – 30
°
C at a rate of 0.5
°
C per adjustment using
this dial.
• Clockwise rotation: Set temperature increases
• Counterclockwise rotation: Set temperature decreases.
AUTO switch
“AUTO” is indicated on display and air conditioning system operates according to the following setting
when switch is pressed.
• Air outlet: Automatic control
• Air flow: Automatic control
• Air inlet: Automatic control
• A/C switch: ON
NOTE:
When air outlet or air flow is manually operated while “AUTO” is indicated on display “AUTO” indica-
tion turns OFF. However, automatic control continues for other functions than air outlet or air flow.
MODE switch
• When each MODE switch is pressed, air outlet is switched and VENT, B/L, FOOT, or D/F
*
can be
selected manually. (Switch indicator of operated switch turns ON.)
• When each MODE switch is pressed twice continuously, air outlet is set to automatic control.
(Switch indicator turns OFF while air outlet automatic control is operated.)
• Air conditioning system turns ON and operates according to the previous setting before turning air
conditioning system OFF when each MODE switch is pressed while air conditioning system is OFF.
(Air outlet is set according to the switch that is pressed)
*: Air inlet is set to fresh air intake when D/F is selected.
NOTE:
Air outlet automatic control is released (“AUTO” turns OFF) when each MODE switch is pressed while
“AUTO” is indicated on display.
HAC-28
< SYSTEM DESCRIPTION >
[TYPE 1]
OPERATION
• In D-MODE: The following switches and dial cannot be operated.
- A/C switch
- OFF switch
- MODE switch
- Fan control dial
DEF switch
DEF mode turns ON
⇔
OFF each time when switch is pressed.
• When switch is pressed while air conditioning system is in the ON position.
- Air conditioning system operates according to the following setting when DEF mode is turned ON
• Air outlet: DEF
• Air flow: Automatic control
• Air inlet: Fresh air intake
• A/C switch: ON
- Air conditioning system operates according to the previous setting before turning DEF mode ON
when DEF mode is turned OFF.
• When switch is pressed while air conditioning system is in the OFF position.
- Air conditioning system turns ON and operates according to the following setting when DEF mode
is turned ON.
• Air outlet: DEF
• Air flow: Automatic control
• Air inlet: Fresh air intake
• A/C switch: ON
- Air conditioning system operates according to the previous setting before turning air conditioning
system OFF when DEF mode is turned OFF.
NOTE:
• System returns to the status that DEF mode is firstly turned ON when setting is changed during
DEF mode using fan control dial, intake switch, or A/C switch and if DEF switch is pressed.
• When DEF mode is turned ON while “AUTO” is indicated on display, “AUTO” indication turns OFF.
However, air flow automatic control continues.
Intake switch
• Air inlet changes between recirculation (REC)
⇔
fresh air intake (FRE) each time this switch is
pressed.
-
switch indicator ON: Recirculation
*
-
switch indicator ON: Fresh air intake
• Switch indicator blinks 2 times and air inlet is set to automatic control when switch is pressed and
held for 2 seconds or more.
• Air conditioning system turns ON and operates according to the following setting when switch is
pressed while air conditioning system is in the OFF position.
- Air outlet: Previous setting before turning air conditioning system OFF.
- Air flow: Previous setting before turning air conditioning system OFF.
- Air inlet: Recirculation
- A/C switch: ON
*: A/C switch turns ON when recirculation is selected.
Fan control dial
• Air flow can be manually set within a range of 1st – 7th speed using this dial.
- Clockwise rotation: Air flow increases
- Counterclockwise rotation: Air flow decreases
• Air conditioning system turns ON and operates according to the previous setting before turning air
conditioning system OFF when this dial is operated while air conditioning system is OFF. [Air flow
is set to 1st speed (manual control)]
NOTE:
Air flow automatic control is released (“AUTO” turns OFF) when this dial is operated while “AUTO” is
indicated on display.
DIAGNOSIS SYSTEM (A/C AUTO AMP.)
HAC-29
< SYSTEM DESCRIPTION >
[TYPE 1]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
DIAGNOSIS SYSTEM (A/C AUTO AMP.)
Description
INFOID:0000000006626866
Air conditioning system performs self-diagnosis, operation check, function diagnosis, and various settings
using diagnosis function of each control unit.
CONSULT-III Function
INFOID:0000000006626867
CONSULT-III performs the following functions via CAN communication with A/C auto amp.
NOTE:
Diagnosis should be performed with engine running. Door motor operation speeds become slower and NO
results may be returned even for normal operation if battery voltage drops below 12 V during self-diagnosis.
ECU IDENTIFICATION
Part number of A/C auto amp. can be checked.
SELF-DIAGNOSIS RESULTS
Diagnosis result that is judged by A/C auto amp. can be checked. Refer to
.
DATA MONITOR
Input/output signal of A/C auto amp. can be checked.
Display item list
ECU
Diagnostic item
(CONSULT-III)
A/C auto amp.
HVAC
Self Diagnostic Result
Data Monitor
Active Test
Work support
Multi display unit
MDU
Self Diagnostic Result
Data Monitor
Active Test
BCM
BCM-AIR CONDITIONER
Self Diagnostic Result
Data Monitor
ECM
ENGINE
Self Diagnostic Result
Data Monitor
IPDM E/R
IPDM E/R
Self Diagnostic Result
Data Monitor
Auto active test
Diagnostic mode
Description
Ecu Identification
Displays the part number of A/C auto amp.
Self Diagnostic Result
Displays the diagnosis results judged by A/C auto amp.
Data Monitor
Displays the input/output signal of A/C auto amp.
Active Test
The signals used to activate each device are forcibly supplied from A/C auto amp.
Work support
Changes the setting for each setting function and performs automatic adjustment of
components.
Monitor item [Unit]
Description
AMB TEMP SEN
[
°
C (
°
F)]
Ambient temperature value converted from ambient sensor signal received from ambi-
ent sensor
IN-VEH TEMP
[
°
C (
°
F)]
In-vehicle temperature value converted from in-vehicle sensor signal received from in-
vehicle sensor
HAC-30
< SYSTEM DESCRIPTION >
[TYPE 1]
DIAGNOSIS SYSTEM (A/C AUTO AMP.)
*: “DUTY” is displayed, but voltage is indicated. Or unit is not displayed but unit is (V).
ACTIVE TEST
The signals used to activate each device forcibly supplied from A/C auto amp. operation check of air condi-
tioning system can be performed.
Check each output device
*: Position of mode door motor is set to the status of automatic control that is selected by foot position setting
trimmer. Refer to
HAC-49, "Foot Position Setting Trimmer"
.
NOTE:
Perform the inspection of each output device after starting the engine because the compressor is operated.
WORK SUPPORT
Setting change of each setting functions and automatic adjustment of components can be performed.
INT TEMP SEN
[
°
C (
°
F)]
Evaporator fin temperature value converted from intake sensor signal received from in-
take sensor
SUNLOAD SEN
[w/m
2
]
Sunload value converted from sunload sensor signal received from sunload sensor
AMB SEN CAL
[
°
C (
°
F)]
Ambient temperature value calculated by A/C auto amp.
IN-VEH CAL
[
°
C (
°
F)]
In-vehicle temperature value calculated by A/C auto amp.
INT TEMP CAL
[
°
C (
°
F)]
Evaporator fin temperature value calculated by A/C auto amp.
SUNL SEN CAL
[w/m
2
]
Sunload value calculated by A/C auto amp.
COMP REQ SIG
[On/Off]
Displays A/C ON signal ON/OFF status transmitted to BCM.
FAN REQ SIG
[On/Off]
Displays blower fan ON signal ON/OFF status transmitted to BCM.
FAN DUTY
*
Target value of voltage (applied voltage) applied to blower motor by A/C auto amp.
XM
Target discharge air temperature judged by A/C auto amp. depending on the tempera-
ture setting and the value from each sensor
ENG COOL TEMP
[
°
C (
°
F)]
Engine coolant temperature signal value received from ECM via CAN communication
Monitor item [Unit]
Description
Test item
Description
HVAC TEST
The operation check of air conditioning system can be performed by selecting the mode.
Refer to the following table for the conditions of each mode.
Test item
MODE 1
MODE 2
MODE 3
MODE 4
MODE 5
MODE 6
MODE 7
Mode door motor position
VENT
VENT
B/L
B/L
FOOT
*
D/F
DEF
Intake door motor position
REC
REC
REC
20% FRE
80% FRE
FRE
FRE
Air mix door motor position
FULL COLD
FULL COLD
FULL COLD
MIDDLE
MIDDLE
FULL HOT
FULL HOT
Blower motor (Applied voltage)
5 V
8.5 V
10.5 V
8.5 V
8.5 V
8.5 V
13 V
Magnet clutch
ON
ON
ON
ON
OFF
OFF
ON
Blower motor (Blower fan ON
signal transmitted to BCM)
ON
ON
ON
ON
OFF
OFF
ON
Work item
Description
Refer to
TEMP SET CORRECT
Setting change of temperature setting trimmer can be performed.
HAC-48, "Temperature
Setting Trimmer"
REC MEMORY SET
Setting change of inlet port memory function (REC) can be per-
formed.
HAC-48, "Inlet Port Mem-
ory Function (REC)"
FRE MEMORY SET
Setting change of inlet port memory function (FRE) can be per-
formed.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст