Nissan Pathfinder. Manual — part 694
OPERATION
HAC-37
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
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Display screen
Controller (A/C and AV switch assembly)
Switch Operation
JMIIA0720ZZ
1.
Fan switch
2.
Temperature control (Driver side)
3.
AUTO switch
4.
OFF switch
5.
REAR switch
6.
MODE switch
ALIIA0690ZZ
AUTO switch
Turns the switch indicator lamp and "AUTO" indicator on the display unit ON, and then rear air con-
ditioning system becomes the following state.
• Air outlet: Automatic control
• Blower fan: Automatic control
• Compressor: ON
Fan switch
Blower fan speed is manually controlled with this switch.
NOTE:
When fan switch is operated while air conditioning system is in automatic control (“AUTO” is indicat-
ed), automatic control is released (“AUTO” turns OFF).
MODE switch
Selects air outlet sequentially from VENT
⇒ B/L ⇒ FOOT ⇒ VENT each time.
NOTE:
When MODE switch is pressed while air conditioning system is in automatic control (“AUTO” is indi-
cated), automatic control is released (“AUTO” turns OFF).
ON/OFF switch
• Turns rear air conditioning system ON/OFF. (When rear control mode is ON)
• When rear air conditioning system turns OFF, air outlet become the automatic control.
HAC-38
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
OPERATION
REAR CONTROLLER OPERATION
Controller (Rear Air Control)
Switch Operation
REAR switch
• Turns the switch indicator lamp and rear control mode on the display unit ON, and then rear air con-
ditioning system becomes the following state.
- Air outlet: Automatic control
- Blower fan: Automatic control
- Compressor: ON
• Rear control mode is released when switch is pressed again (rear air conditioning system operates
continuously).
Temperature control
switch (Driver side)
• Selects set temperature within a range between 18.0
°C (60°F) – 32.0°C (90°F) at a rate of 0.5°C
(1
°F) each time the dial is rotated.
- Clockwise rotation: Set temperature increases.
- Counterclockwise rotation: Set temperature decreases.
NOTE:
When front air conditioning system is in the OFF position, set temperature can be selected only while
front air conditioning system state (when MODE switch is pressed) is indicated on the display.
1.
OFF switch
2.
Fan switch
3.
Display
4.
Temperature control switch
5.
AUTO switch
ALIIA0557ZZ
AUTO switch
Turns the switch indicator lamp and "AUTO" indicator on the display ON, and then rear air condition-
ing system becomes the following state.
• Air outlet: Automatic control
• Blower fan: Automatic control
• Compressor: ON
Fan switch (UP/DOWN)
Blower fan speed is manually controlled with these switches. Seven speeds are available for manual
control (as shown on the display screen).
NOTE:
When fan switch is pressed while air conditioning system is in automatic control (“AUTO” is indicated),
automatic control is released (“AUTO” turns OFF).
OFF switch
• Turns rear air conditioning system OFF.
• When rear air conditioning system turns OFF, air outlet become the automatic control.
Temperature control
switch
Setting temperature is selected using this switch with in a range between 18.0
°C (60°F) – 32.0°C
(90
°F) at a rate of 0.5°C (1°F) per adjustment.
•
: Press: Set temperature increases.
•
: Press: Set temperature decreases.
DIAGNOSIS SYSTEM (HVAC)
HAC-39
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
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DIAGNOSIS SYSTEM (HVAC)
Description
INFOID:0000000009176800
Air conditioning system performs self-diagnosis, operation check, function diagnosis, and various settings
using diagnosis function of each control unit.
CONSULT Function
INFOID:0000000009176801
CAUTION:
After disconnecting the CONSULT vehicle interface (VI) from the data link connector, the ignition must
be cycled OFF
→ ON (for at least 5 seconds) → OFF. If this step is not performed, the BCM may not go
to “sleep mode”, potentially causing a discharged battery and a no-start condition.
CONSULT performs the following functions via CAN communication with A/C auto amp.
APPLICATION ITEMS
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.
SELF-DIAGNOSIS RESULTS
.
ACTIVE TEST
Check each output device
ECU
Diagnostic item
(CONSULT)
A/C auto amp.
HVAC
Self Diagnostic Result
Data Monitor
Active Test
Work support
AV control unit
MULTI AV
Self Diagnostic Result
Multi AV system on board diagnosis function
ECM
ENGINE
Self Diagnostic Result
Data Monitor
IPDM E/R
IPDM E/R
Self Diagnostic Result
Data Monitor
Auto active test
Diagnostic mode
Description
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.
ECU identification
Displays the part number of A/C auto amp.
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.
HAC-40
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
DIAGNOSIS SYSTEM (HVAC)
NOTE:
Perform the inspection of each output device after starting the engine because the compressor is operated.
DATA MONITOR
Display item list
Test item
MODE 1
MODE 2
MODE 3
MODE 4
MODE 5
MODE 6
MODE 7
Mode door motor (front) posi-
tion
VENT
VENT
B/L
D/F
D/F
DEF
DEF
Intake door motor position
REC
REC
20% FRE
FRE
FRE
FRE
FRE
Air mix door motor (driver side)
position
FULL COLD FULL COLD FULL COLD
FULL HOT
FULL HOT
FULL HOT
FULL HOT
Air mix door motor (passenger
side) position
FULL COLD FULL COLD FULL COLD
FULL HOT
FULL HOT
FULL HOT
FULL HOT
Front blower motor control sig-
nal duty ratio
30%
30%
60%
HI
HI
60%
HI
Magnet clutch
ON
ON
ON
OFF
OFF
ON
ON
Mode door motor (rear) posi-
tion
VENT
VENT
FOOT
FOOT
FOOT
FOOT
FOOT
Air mix door motor (rear) posi-
tion
FULL COLD FULL COLD FULL COLD
FULL HOT
FULL HOT
FULL HOT
FULL HOT
Rear shut-off door motor posi-
tion
FR / INT
CLOSE
FR / INT
CLOSE
FR / INT
CLOSE
FR / INT
CLOSE
FR / INT
OPEN
FR / INT
OPEN
FR / INT
OPEN
PTC heater 1
OFF
ON
ON
ON
ON
OFF
ON
PTC heater 2
OFF
OFF
OFF
ON
ON
OFF
ON
Rear blower motor 1 control
signal
3V
3V
7V
HI
HI
7V
3V
Rear blower motor 2 control
signal
3V
3V
7V
HI
HI
7V
3V
Monitor item [Unit]
Description
AMB TEMP SEN
[
°C (°F)]
Ambient sensor value converted from ambient sensor signal received from ambient sen-
sor.
IN-VEH TEMP
[
°C (°F)]
In-vehicle sensor value converted from in-vehicle sensor signal received from in-vehicle
sensor.
INT TEMP SEN
[
°C (°F)] Intake sensor value converted from intake sensor signal received from intake sensor.
SUNLOAD SEN
[w/m
2
]
Sunload sensor value converted from sunload sensor signal received from sunload sen-
sor.
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)] Front 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 switch ON/OFF status transmitted to other units via CAN communication.
FAN REQ SIG
[On/Off]
Displays front blower motor ON/OFF status transmitted to other units via CAN commu-
nication.
FAN DUTY
Duty ratio of front blower motor judged by A/C auto amp.
XM
Target discharge front air temperature (driver side) judged by A/C auto amp. depending
on the temperature setting and the value from each sensor.
RR XM
Target discharge rear air temperature judged by A/C auto amp. depending on the tem-
perature setting and the value from each sensor.
PA TARGET A/TEMP
Target discharge front air temperature (passenger side) judged by A/C auto amp. de-
pending on the temperature setting and the value from each sensor.
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