Nissan Pathfinder (2008 year). Manual — part 453
HAC-168
< ECU DIAGNOSIS >
[MANUAL AIR CONDITIONER]
AIR CONDITIONER CONTROL
ALIIA0075GB
AIR CONDITIONER CONTROL
HAC-169
< ECU DIAGNOSIS >
[MANUAL AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
ALIIA0076GB
HAC-170
< ECU DIAGNOSIS >
[MANUAL AIR CONDITIONER]
AIR CONDITIONER CONTROL
ALIIA0077GB
AIR CONDITIONER CONTROL
HAC-171
< SYMPTOM DIAGNOSIS >
[MANUAL 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:0000000001366770
SYMPTOM TABLE
Symptom
Reference Page
A/C system does not come on.
Go to Trouble Diagnosis Procedure for A/C System.
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 malfunctioning.
Go to Trouble Diagnosis Procedure for Front Blower Motor.
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.
HAC-172
< SYMPTOM DIAGNOSIS >
[MANUAL AIR CONDITIONER]
INSUFFICIENT COOLING
INSUFFICIENT COOLING
Component Function Check
INFOID:0000000001366771
SYMPTOM: Insufficient cooling
INSPECTION FLOW
1.
CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - TEMPERATURE DECREASE
1.
Turn temperature control dial counterclockwise to maximum cold.
2.
Check for cold air at discharge air outlets.
Can the symptom be duplicated?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK FOR ANY SYMPTOMS
Perform a complete operational check for any symptoms. Refer to XX-XX, "*****".
Does another symptom exist?
YES
>> Refer to XX-XX, "*****".
NO
>> System OK.
3.
CHECK FOR SERVICE BULLETINS
Check for any service bulletins.
>> GO TO 4.
4.
CHECK DRIVE BELTS
Check compressor belt tension. Refer to XX-XX, "*****".
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Adjust or replace compressor belt. Refer to XX-XX, "*****".
5.
CHECK AIR MIX DOOR OPERATION
Check and verify air mix door mechanism for smooth operation.
Does air mix door operate correctly?
YES
>> GO TO 6.
NO
>> Repair or replace air mix door control linkage.
6.
CHECK COOLING FAN MOTOR OPERATION
Check and verify cooling fan motor for smooth operation. Refer to XX-XX, "*****".
Does cooling fan motor operate correctly?
YES
>> GO TO 7.
NO
>> Check cooling fan motor. Refer to XX-XX, "*****".
7.
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 8.
8.
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 9.
NO
>> Check contaminated refrigerant. Refer to XX-XX, "*****".
INSUFFICIENT COOLING
HAC-173
< SYMPTOM DIAGNOSIS >
[MANUAL AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
9.
CHECK FOR EVAPORATOR FREEZE UP
Start engine and run A/C. Check for evaporator freeze up.
Does evaporator freeze up?
YES
>> Perform performance test diagnoses. Refer to XX-XX, "*****".
NO
>> GO TO 10.
10.
CHECK REFRIGERANT PRESSURE
Check refrigerant pressure with manifold gauge connected. Refer to XX-XX, "*****".
OK or NG
OK
>> Perform performance test diagnoses. Refer to XX-XX, "*****".
NG
>> GO TO 11.
11.
CHECK AIR DUCTS
Check ducts for air leaks.
Is the inspection result normal?
YES
>> System OK.
NO
>> Repair air leaks.
Performance Test Diagnoses
INFOID:0000000001366772
PERFORMANCE TEST DIAGNOSES
HAC-174
< SYMPTOM DIAGNOSIS >
[MANUAL AIR CONDITIONER]
INSUFFICIENT COOLING
*1
XX-XX, "*****"
*2
"Test Reading"
*3
XX-XX, "*****"
*4
XX-XX, "*****"
RJIA1601E
INSUFFICIENT COOLING
HAC-175
< SYMPTOM DIAGNOSIS >
[MANUAL AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Performance Chart
INFOID:0000000001366773
PERFORMANCE CHART
Test Condition
*1
XX-XX, "*****"
*2
XX-XX, "*****"
*3
XX-XX, "*****"
RJIA3107E
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