Nissan Qashqai J11. Manual — part 1153
HAC-248
< SYSTEM DESCRIPTION >
[MANUAL HEATER ]
SYSTEM
• 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.
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
OPERATION
HAC-249
< SYSTEM DESCRIPTION >
[MANUAL HEATER ]
C
D
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HAC
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OPERATION
Switch Name and Function
INFOID:0000000010433415
OPERATION AND DISPLAY OF AUTOMATIC AIR CONDITIONING SYSTEM
Operation: Heater control
MODE D/F switch
MODE FOOT switch
MODE B/L switch
MODE VENT switch
Fan control dial
MODE DEF switch
INTAKE switch
Temperature control dial
Switch name
Function
INTAKE switch
Air inlet changes between recirculation (REC)
⇔
fresh air intake (FRE) each time this switch is pressed.
• Switch indicator lamp ON: Recirculation
• Switch indicator lamp OFF: Fresh air intake
Fan control dial
The air flow can be manually set within the range of speeds 1st - 24th by operating the dial.
Temperature control
dial
The air flow temperature can be adjusted by operating the dial.
• Clockwise: Raise the air flow temperature.
• Counterclockwise: Lower the air flow temperature.
MODE VENT switch
• Air outlet mode is changed by pushing these switches.
• When MODE D/F switch or MODE DEF switch is pushed, air inlet is changed to fresh air intake (FRE)
• When MODE DEF switch is pushed while air outlet is set on DEF position, air outlet mode is controlled
to setting before air outlet is set to DEF position.
MODE B/L switch
MODE FOOT switch
MODE D/F switch
MODE DEF switch
JMIIA3581ZZ
HAC-250
< SYSTEM DESCRIPTION >
[MANUAL HEATER ]
DIAGNOSIS SYSTEM (A/C AMP.)
DIAGNOSIS SYSTEM (A/C AMP.)
Description
INFOID:0000000010433416
Air conditioning system performs self-diagnosis, operation check, function diagnosis, and various settings
using diagnosis function of each control unit.
CONSULT Function
INFOID:0000000010433417
CONSULT performs the following functions via CAN communication with A/C 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 amp. can be checked.
SELF-DIAGNOSIS RESULTS
Diagnosis result that is judged by A/C amp. can be checked. Refer to
.
DATA MONITOR
Input/output signal of A/C amp. can be checked.
NOTE:
The following table includes information (items) inapplicable to this vehicle. For information (items) applicable
to this vehicle, refer to CONSULT display items.
Display item list
ECU
Diagnostic item
(CONSULT)
A/C amp.
HVAC
Self Diagnostic Result
Data Monitor
Active Test
Work support
BCM
BCM-AIR CONDITIONER
Self Diagnostic Result
Data Monitor
ECM
ENGINE
Self Diagnostic Result
Data Monitor
Diagnostic mode
Description
Ecu Identification
Displays the part number of A/C amp.
Self Diagnostic Result
Displays the diagnosis results judged by A/C amp.
Data Monitor
Displays the input/output signal of A/C amp.
Active Test
The signals used to activate each device are forcibly supplied from A/C 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 temperature signal received from
combination meter via CAN communication.
INT TEMP SEN
[
°
C (
°
F)]
NOTE:
This item is indicated, but not monitored.
AMB SEN CAL
[
°
C (
°
F)]
Ambient temperature value calculated by A/C amp.
INT TEMP CAL
[
°
C (
°
F)]
NOTE:
This item is indicated, but not monitored.
COMP REQ SIG
[On/Off]
NOTE:
This item is indicated, but not monitored.
DIAGNOSIS SYSTEM (A/C AMP.)
HAC-251
< SYSTEM DESCRIPTION >
[MANUAL HEATER ]
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HAC
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ACTIVE TEST
The signals used to activate each device forcibly supplied from A/C amp. operation check of air conditioning
system can be performed.
Check each output device
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.
COMP ECV DUTY
[%]
NOTE:
This item is indicated, but not monitored.
FAN REQ SIG
[On/Off]
Displays blower fan ON signal ON/OFF status transmitted to ECM.
FAN DUTY
Target duty ratio of voltage (applied voltage) applied to blower motor by A/C amp.
VEHICLE SPEED
[km/h
(mph)]
Vehicle speed signal value received from combination meter 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
20% FRE
20% FRE
FRE
FRE
FRE
Air mix door motor position
FULL COLD
FULL COLD
FULL COLD
FULL HOT
FULL HOT
FULL HOT
FULL HOT
Blower motor (duty ratio)
35%
35%
60%
60%
90%
90%
35%
Work item
Description
Refer to
Door Motor Starting Position Reset
Starting position reset of air mix door motor and mode door
motor can be performed.
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