Nissan Juke F15. Manual — part 863
AUTOMATIC AIR CONDITIONER SYSTEM
HAC-87
< SYMPTOM DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Noise is heard when the A/C
system operates.
During compressor op-
eration
Cooler cycle
During blower motor op-
eration
• Mixing any foreign object in blower
motor
• Blower motor fan breakage
• Blower motor rotation inferiority
HAC-83, "Component Inspec-
tion (Blower Motor)"
• Memory function does not operate normally.
• The setting is not maintained. (It returns to initial condi-
tion)
• A/C auto amp. battery power supply
circuit
• A/C auto amp.
HAC-75, "A/C AUTO AMP. : Di-
agnosis Procedure"
Symptom
Corresponding malfunction part
Check item/Reference
HAC-88
< SYMPTOM DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
INSUFFICIENT COOLING
INSUFFICIENT COOLING
Description
INFOID:0000000012200075
Symptom
• Insufficient cooling
• No cool air comes out. (Air flow volume is normal.)
Diagnosis Procedure
INFOID:0000000012200076
NOTE:
Perform self-diagnoses with CONSULT before performing symptom diagnosis. If any DTC is detected, per-
form the corresponding diagnosis.
1.
CHECK MAGNET CLUTCH OPERATION
1. Turn ignition switch ON.
2. Operate fan control dial.
3. Press A/C switch.
4. Check that A/C indicator turns ON. Check visually and by sound that compressor operates.
5. Press A/C switch again.
6. Check that A/C indicator turns OFF. Check that compressor stops.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Perform diagnosis of “COMPRESSOR DOES NOT OPERATE” in “SYMPTOM DIAGNOSIS”.
2.
CHECK DRIVE BELT
Check tension of drive belt. Refer to
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Adjust or replace drive belt depending on the inspection results.
3.
CHECK REFRIGERANT CYCLE PRESSURE
Connect recovery/recycling recharging equipment to the vehicle and perform pressure inspection with gauge.
.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace parts depending on the inspection results.
4.
CHECK AIR LEAKAGE FROM EACH DUCT
Check duct and nozzle, etc. of the air conditioning system for leakage.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace parts depending on the inspection results.
5.
CHECK AMBIENT TEMPERATURE DISPLAY
Check that there is not much difference between actual ambient temperature and indicated temperature on
information display in combination meter.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Perform diagnosis for the A/C auto amp. connection recognition signal circuit. Refer to
6.
CHECK SETTING OF TEMPERATURE SETTING TRIMMER
1. Check setting value of temperature setting trimmer. Refer to
HAC-50, "Temperature Setting Trimmer"
.
2. Check that temperature setting trimmer is set to “+ direction”.
NOTE:
The control temperature can be set with the setting of the temperature setting trimmer.
INSUFFICIENT COOLING
HAC-89
< SYMPTOM DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
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L
M
A
B
HAC
N
O
P
3. Set difference between the set temperature and control temperature to “0”.
Is inspection result normal?
YES
>> INSPECTION END
NO
>> Replace A/C auto amp. Refer to
HAC-90
< SYMPTOM DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
INSUFFICIENT HEATING
INSUFFICIENT HEATING
Description
INFOID:0000000012200077
Symptom
• Insufficient heating
• No warm air comes out. (Air flow volume is normal.)
Diagnosis Procedure
INFOID:0000000012200078
NOTE:
Perform self-diagnoses with CONSULT before performing symptom diagnosis. If any DTC is detected, per-
form the corresponding diagnosis.
1.
CHECK COOLING SYSTEM
1. Check engine coolant level and check for leakage. Refer to
.
2. Check radiator cap. Refer to
CO-14, "RADIATOR CAP : Inspection"
3. Check water flow sounds of the engine coolant. Refer to
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Refill engine coolant and repair or replace the parts depending on the inspection results.
2.
CHECK HEATER HOSE
Check installation of heater hose by visually or touching.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace parts depending on the inspection results.
3.
CHECK HEATER CORE
1. Check temperature of inlet hose and outlet hose of heater core.
2. Check that inlet side of heater core is hot and the outlet side is slightly lower than/almost equal to the inlet
side.
CAUTION:
Always perform the temperature inspection in a short period of time because the engine coolant
temperature is very hot.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace heater core. Refer to
HA-46, "HEATER CORE : Removal and Installation"
.
4.
CHECK AIR LEAKAGE FROM EACH DUCT
Check duct and nozzle, etc. of the air conditioning system for air leakage.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace parts depending on the inspection results.
5.
CHECK SETTING OF TEMPERATURE SETTING TRIMMER
1. Check setting value of temperature setting trimmer. Refer to
HAC-50, "Temperature Setting Trimmer"
.
2. Check that temperature setting trimmer is set to “
− direction”.
NOTE:
The control temperature can be set by the temperature setting trimmer.
3. Set difference between the set temperature and control temperature to “0”.
Are the symptoms solved?
YES
>> INSPECTION END
NO
>> Replace A/C auto amp. Refer to
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