Nissan Pathfinder (2012 year). Instruction — part 423
HAC-106
< WIRING DIAGRAM >
[AUTOMATIC AIR CONDITIONER]
AIR CONDITIONER CONTROL
ABIIA0791GB
August 2012
2012 Pathfinder
AIR CONDITIONER CONTROL
HAC-107
< WIRING DIAGRAM >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
ABIIA0792GB
August 2012
2012 Pathfinder
HAC-108
< WIRING DIAGRAM >
[AUTOMATIC AIR CONDITIONER]
AIR CONDITIONER CONTROL
ABIIA0793GB
August 2012
2012 Pathfinder
AIR CONDITIONER CONTROL
HAC-109
< WIRING DIAGRAM >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
ABIIA0794GB
August 2012
2012 Pathfinder
HAC-110
< WIRING DIAGRAM >
[AUTOMATIC AIR CONDITIONER]
AIR CONDITIONER CONTROL
ABIIA0795GB
August 2012
2012 Pathfinder
AIR CONDITIONER CONTROL
HAC-111
< SYMPTOM DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
SYMPTOM DIAGNOSIS
AIR CONDITIONER CONTROL
Symptom Matrix Chart
INFOID:0000000007356401
SYMPTOM TABLE
Symptom
Reference Page
A/C system does not come on.
Go to Trouble Diagnosis Procedure for A/C System.
A/C system display is malfunctioning.
Go to AV System.
A/C system cannot be controlled.
Go to Self-diagnosis Function.
Air outlet does not change.
Go to Trouble Diagnosis Procedure for Mode Door Motor.
Mode door motor is malfunctioning.
Discharge air temperature does not change.
Go to Trouble Diagnosis Procedure for Air Mix Door Motor.
Air mix door motor is malfunctioning.
Intake door does not change.
Go to Trouble Diagnosis Procedure for Intake Door Motor.
Intake door motor is malfunctioning.
Front blower motor operation is malfunction-
ing.
Go to Trouble Diagnosis Procedure for Front Blower Motor.
Rear blower motor operation is malfunction-
ing.
Go to Trouble Diagnosis Procedure for Rear Blower Motor.
Rear discharge air temperature and/or air
outlet does not change.
Go to Trouble Diagnosis Procedure for Rear Air Control system.
Magnet clutch does not engage.
Go to Trouble Diagnosis Procedure for Magnet Clutch.
Insufficient cooling
Go to Trouble Diagnosis Procedure for Insufficient Cooling.
Insufficient heating
Go to Trouble Diagnosis Procedure for Insufficient Heating.
Noise
Go to Trouble Diagnosis Procedure for Noise.
Self-diagnosis cannot be performed.
Go to Trouble Diagnosis Procedure for Self-diagnosis.
Memory function does not operate.
Go to Trouble Diagnosis Procedure for Memory Function.
August 2012
2012 Pathfinder
HAC-112
< SYMPTOM DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
INSUFFICIENT COOLING
INSUFFICIENT COOLING
Component Function Check
INFOID:0000000007356402
SYMPTOM: Insufficient cooling
INSPECTION FLOW
1.
CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - TEMPERATURE DECREASE
1. Press the AUTO switch.
2. Turn temperature control dial (driver) counterclockwise until 18
°
C (60
°
F) is displayed.
3. Check for cold air at discharge air outlets.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK FOR ANY SYMPTOMS
Perform a complete operational check for any symptoms. Refer to
HAC-5, "Operational Check (Front)"
or
HAC-6, "Operational Check (Rear)"
.
Does another symptom exist?
YES
>> Refer to
HAC-111, "Symptom Matrix Chart"
NO
>> System OK.
3.
CHECK FOR SERVICE BULLETINS
Check for any service bulletins.
>> GO TO 4.
4.
PERFORM SELF-DIAGNOSIS
Perform self-diagnosis Refer to
HAC-24, "A/C Auto Amp. Self-Diagnosis"
.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Refer to
HAC-25, "A/C System Self-Diagnosis Code Chart"
.
5.
CHECK DRIVE BELTS
Check compressor belt tension. Refer to
(VK56DE).
Is the inspection result normal?
OK
>> GO TO 6.
NG
>> Adjust or replace compressor belt. Refer to
(VQ40DE) or
,
EM-152, "Removal and Installation"
(VK56DE).
6.
CHECK AIR MIX DOOR OPERATION
Check and verify air mix door mechanism for smooth operation. Refer to
HAC-31, "Air Mix Door Motor (Driver)
HAC-34, "Air Mix Door Motor (Passenger) Component Function Check"
Does air mix door operate correctly?
YES
>> GO TO 7.
NO
>> Check air mix door motor circuit. Refer to
HAC-32, "Air Mix Door Motor (Driver) Diagnosis Proce-
HAC-34, "Air Mix Door Motor (Passenger) Diagnosis Procedure"
7.
CHECK COOLING FAN MOTOR OPERATION
Check and verify cooling fan motor for smooth operation.
Does cooling fan motor operate correctly?
YES
>> GO TO 8.
NO
>> Check cooling fan motor.
8.
CHECK WATER VALVE OPERATION (VK56DE ONLY)
Check and verify water valve for smooth operation. Refer to
HAC-74, "Water Valve Description (VK56DE)"
August 2012
2012 Pathfinder
INSUFFICIENT COOLING
HAC-113
< SYMPTOM DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Does water valve operate correctly?
YES
>> GO TO 9.
NO
>> Check water valve circuit. Refer to
HAC-74, "Water Valve Diagnosis Procedure (VK56DE)"
.
9.
CHECK RECOVERY/RECYCLING EQUIPMENT BEFORE USAGE
Check recovery/recycling equipment before connecting to vehicle. Verify there is no pressure in the recovery/
recycling equipment by checking the gauges. If pressure exists, recover refrigerant from equipment lines.
>> GO TO 10.
10.
CHECK REFRIGERANT PURITY
1. Connect recovery/recycling equipment to vehicle.
2. Confirm refrigerant purity in supply tank using recovery/recycling and refrigerant identifier.
Is the inspection result normal?
YES
>> GO TO 11.
NO
>> Check contaminated refrigerant. Refer to
HAC-126, "Working with HFC-134a (R-134a)"
.
11.
CHECK FOR EVAPORATOR FREEZE UP
Start engine and run A/C. Check for evaporator freeze up.
Does evaporator freeze up?
YES
>> Perform diagnostic work flow. Refer to
HAC-113, "Diagnostic Work Flow"
NO
>> GO TO 12.
12.
CHECK REFRIGERANT PRESSURE
Check refrigerant pressure with manifold gauge connected. Refer to
Is the inspection result normal?
YES
>> GO TO 13.
NO
>> Perform diagnostic work flow. Refer to
HAC-113, "Diagnostic Work Flow"
13.
CHECK AIR DUCTS
Check ducts for air leaks.
Is the inspection result normal?
YES
>> System OK.
NO
>> Repair air leaks.
Diagnostic Work Flow
INFOID:0000000007356403
August 2012
2012 Pathfinder
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