Nissan Pathfinder (2012 year). Manual — part 412
HAC-18
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONER]
AUTOMATIC AIR CONDITIONER SYSTEM
ECM judges whether compressor can be turned ON, based on each sensor status (refrigerant pressure sen-
sor signal, throttle angle sensor, etc.). If it judges compressor can be turned ON, it sends compressor ON sig-
nal to IPDM E/R, via CAN communication line.
Upon receipt of compressor ON signal from ECM, IPDM E/R turns air conditioner relay ON to operate com-
pressor.
Discharge Air Flow (Front)
INFOID:0000000007356342
Mode door position
Air outlet/distribution
Vent
Foot
Defroster
100%
0%
—
60%
40%
—
18%
64%
18%
14%
53%
33%
—
13%
87%
LJIA0172E
August 2012
2012 Pathfinder
AUTOMATIC AIR CONDITIONER SYSTEM
HAC-19
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONER]
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Switches And Their Control Function (Front)
INFOID:0000000007356343
WJIA1680E
AWIIA0236GB
August 2012
2012 Pathfinder
HAC-20
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONER]
AUTOMATIC AIR CONDITIONER SYSTEM
Switches And Their Control Function (Rear)
INFOID:0000000007356344
AWIIA0239GB
AWIIA0240GB
August 2012
2012 Pathfinder
DIAGNOSIS SYSTEM (HVAC)
HAC-21
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONER]
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DIAGNOSIS SYSTEM (HVAC)
CONSULT Function (HVAC)
INFOID:0000000007356345
CONSULT can display each diagnostic item using the diagnostic test modes shown following.
SELF-DIAGNOSIS
Display Item List
DATA MONITOR
Display Item List
Diagnostic mode
Description
SELF DIAGNOSTIC RESULT
Displays A/C auto amp. self-diagnosis results.
DATA MONITOR
Displays A/C auto amp.l input/output data in real time.
CAN DIAG SUPPORT MNTR
The result of transmit/receive diagnosis of CAN communication can be read.
ECU IDENTIFICATION
A/C auto amp. part number can be read.
DTC
Description
Reference page
B2573
Battery voltage out of range
CHG-5, "Work Flow (With EXP-800 NI or GR8-1200 NI)"
or
CHG-8, "Work Flow (Without EXP-800 NI or GR8-1200 NI)"
B2578
In-vehicle sensor circuit out of range (low)
HAC-82, "In-Vehicle Sensor Diagnosis Procedure"
B2579
In-vehicle sensor circuit out of range (high)
B257B
Ambient sensor circuit short
HAC-79, "Ambient Sensor Diagnosis Procedure"
B257C
Ambient sensor circuit open
B257F
Optical sensor (Driver) circuit open or short
HAC-85, "Optical Sensor Diagnosis Procedure"
B2580
Optical sensor (Passenger) circuit open or short
B2581
Intake sensor circuit short
HAC-87, "Intake Sensor Diagnosis Procedure"
B2582
Intake sensor circuit open
U1000
CAN bus fault
Monitor item
Value
Contents
BATT VIA CAN
"V"
Displays battery voltage signal.
IGN VIA CAN
"ON/OFF"
Displays ignition switch signal.
DVR SUNLD SEN
"w/m2"
Displays optical sensor (driver) signal.
PAS SUNLD SEN
"w/m2"
Displays optical sensor (passenger) signal.
AMB TEMP SEN
"
°
C/
°
F"
Displays ambient sensor signal.
EVAP TEMP SEN
"
°
C/
°
F"
Displays intake sensor signal.
INCAR TMP SEN
"
°
C/
°
F"
Displays in-vehicle sensor signal.
RR TEMPSET FR
"V"
Displays air mix door (front) set point signal.
RR TEMPSET RR
"V"
Displays air mix door (rear) set point signal.
MODE FDBCK
"V"
Displays mode door motor feedback signal.
DVR MIX FDBCK
"V"
Displays air mix door motor (driver) feedback signal.
PAS MIX FDBCK
"V"
Displays air mix door motor (passenger) feedback signal.
RR FDBCK
"V"
Displays air mix door motor (rear) feedback signal.
August 2012
2012 Pathfinder
HAC-22
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONER]
DIAGNOSIS SYSTEM (BCM)
DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT Function (BCM - COMMON ITEM)
INFOID:0000000007808140
APPLICATION ITEM
CONSULT performs the following functions via CAN communication with BCM.
SYSTEM APPLICATION
BCM can perform the following functions.
Direct Diagnostic Mode
Description
Ecu Identification
The BCM part number is displayed.
Self Diagnostic Result
The BCM self diagnostic results are displayed.
Data Monitor
The BCM input/output data is displayed in real time.
Active Test
The BCM activates outputs to test components.
Work support
The settings for BCM functions can be changed.
Configuration
• The vehicle specification can be read and saved.
• The vehicle specification can be written when replacing BCM.
CAN Diag Support Mntr
The result of transmit/receive diagnosis of CAN communication is displayed.
System
Sub System
Direct Diagnostic Mode
E
cu
Id
en
tifi
ca
tio
n
Se
lf Di
ag
no
st
ic Re
su
lt
Da
ta
Mo
ni
tor
A
cti
ve
T
est
W
o
rk support
Co
nf
igu
rat
ion
CA
N Diag
Su
pp
ort Mn
tr
Door lock
DOOR LOCK
×
×
×
Rear window defogger
REAR DEFOGGER
×
×
Warning chime
BUZZER
×
×
Interior room lamp timer
INT LAMP
×
×
×
Remote keyless entry system
MULTI REMOTE ENT
×
×
×
Exterior lamp
HEAD LAMP
×
×
×
Wiper and washer
WIPER
×
×
×
Turn signal and hazard warning lamps FLASHER
×
×
Air conditioner
AIR CONDITIONER
×
Intelligent Key system
INTELLIGENT KEY
×
Combination switch
COMB SW
×
BCM
BCM
×
×
×
×
×
Immobilizer
IMMU
×
×
×
Interior room lamp battery saver
BATTERY SAVER
×
×
×
Back door open
TRUNK
×
×
Vehicle security system
THEFT ALM
×
×
×
RAP system
RETAINED PWR
×
×
×
Signal buffer system
SIGNAL BUFFER
×
×
TPMS
AIR PRESSURE MONITOR
×
×
×
×
Panic alarm system
PANIC ALARM
×
August 2012
2012 Pathfinder
DIAGNOSIS SYSTEM (BCM)
HAC-23
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONER]
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AIR CONDITIONER
AIR CONDITIONER : CONSULT Function (BCM - AIR CONDITIONER)
INFOID:0000000007808142
DATA MONITOR
Monitor Item [Unit]
Description
IGN ON SW [On/Off]
Indicates condition of ignition switch ON position.
FAN ON SIG [On/Off]
Indicates condition of fan switch.
AIR COND SW [On/Off]
Indicates condition of A/C switch.
August 2012
2012 Pathfinder
HAC-24
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONER]
SELF-DIAGNOSIS FUNCTION
SELF-DIAGNOSIS FUNCTION
A/C Auto Amp. Self-Diagnosis
INFOID:0000000007356348
A/C SYSTEM SELF-DIAGNOSIS FUNCTION
The self-diagnosis function is built into the A/C auto amp. to quickly locate the cause of malfunctions.
DESCRIPTION
The self-diagnostic system diagnoses sensors, CAN system, and battery voltage on A/C auto amp. Refer to
applicable sections (items) for details. Fault codes (if any are present) will be displayed in the ambient temper-
ature display area. Refer to
HAC-25, "A/C System Self-Diagnosis Code Chart"
SELF-DIAGNOSTIC MODE
NOTE:
Radio must be OFF.
1. Turn the ignition switch ON.
2. On the A/C and AV switch assembly, press the "SETTING" but-
ton and twist the volume knob clockwise and counterclockwise
until the Self-Diagnosis screen shows on the display.
3. Scroll down to "Confirmation/Adjustment" and press the
"ENTER" button.
4. Scroll down to "Climate Control" and press the "ENTER" button.
5. The fan bars will flash on the display during the self-test, and
then the fault codes will display in the ambient temperature area.
They will continue scrolling until diagnostic mode is exited.
6. Exit by pressing the "BACK" button on A/C and AV switch
assembly until display returns to its normal operation screen.
HVAC system will be OFF or by turning the ignition switch OFF.
The self-diagnostic system diagnoses sensors, CAN system, and battery voltage on A/C auto amp. Refer to
applicable sections (items) for details. Fault codes (if any are present) will be displayed in the ambient temper-
ature display area. Refer to
HAC-25, "A/C System Self-Diagnosis Code Chart"
A/C and AV Switch Assembly Self-Diagnosis
INFOID:0000000007356349
A/C and AV switch assembly self-diagnosis function
The ON/OFF operation (continuity) of each switch in the A/C and AV switch assembly can be checked.
Self-diagnosis mode
AWNIA0098ZZ
AWIIA0081ZZ
August 2012
2012 Pathfinder
SELF-DIAGNOSIS FUNCTION
HAC-25
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONER]
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• Press the “BACK” switch and the “UP” switch within 10 seconds
after turning the ignition switch from OFF to ACC and hold them for
3 seconds or more. Then the buzzer sounds, all indicators of the
preset switch illuminate, and the self-diagnosis mode starts.
• The continuity of each switch and control dials (A/C and AV switch
assembly only) at the ON position can be checked by pressing
each switch and turning each control dial. The buzzer sounds and
LED's will illuminate if the switch is normal.
Finishing self-diagnosis mode
Self-diagnosis mode is canceled when turning the ignition switch OFF.
A/C System Self-Diagnosis Code Chart
INFOID:0000000007356350
SELF-DIAGNOSTIC CODE CHART
AWIIA0171GB
Code No.
Reference page
02
EE changed by calibration
VTL-7, "Removal and Installation"
03
Battery voltage out of range
12
Passenger air mix door open/short/out of limits
HAC-34, "Air Mix Door Motor (Passenger) Diagnosis Proce-
dure"
22
Driver air mix door open/short
HAC-32, "Air Mix Door Motor (Driver) Diagnosis Procedure"
30
In-vehicle sensor circuit out of range (low)
HAC-82, "In-Vehicle Sensor Diagnosis Procedure"
31
In-vehicle sensor circuit out of range (high)
38
Air mix door motor (rear) circuit failure
HAC-57, "Rear Air Control Component Function Check"
40
Ambient sensor circuit short
HAC-79, "Ambient Sensor Diagnosis Procedure"
41
Ambient sensor circuit open
44
Intake door motor open
HAC-39, "Intake Door Motor Diagnosis Procedure"
46
Intake door motor short
50
Optical sensor (Driver) circuit open or short
HAC-85, "Optical Sensor Diagnosis Procedure"
52
Optical sensor (Passenger) circuit open or short
56
Intake sensor circuit short
HAC-164, "Intake Sensor Diagnosis Procedure"
57
Intake sensor circuit open
80
CAN bus fault
LAN-14, "Trouble Diagnosis Flow Chart"
81
BCM message missing
82
Intake door motor circuit malfunction
HAC-39, "Intake Door Motor Diagnosis Procedure"
90
Stuck button
VTL-7, "Removal and Installation"
92
Mode door motor circuit malfunction
HAC-27, "Mode Door Motor (Front) Component Function
Check"
August 2012
2012 Pathfinder
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