Nissan Juke F15. Manual - part 863

AUTOMATIC AIR CONDITIONER SYSTEM

HAC-87

< SYMPTOM DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

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Noise is heard when the A/C 
system operates.

During compressor op-
eration

Cooler cycle 

HA-27, "Symptom Table"

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”.

Refer to 

HAC-91, "Diagnosis Procedure"

.

2.

CHECK DRIVE BELT

Check tension of drive belt. Refer to 

EM-21, "Inspection"

.

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.

Refer to 

HA-25, "Symptom Table"

.

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 

MWI-58,

"Diagnosis Procedure"

.

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]

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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-93, "Removal and Installation"

.

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 

CO-10, "Inspection"

.

2. Check radiator cap. Refer to 

CO-14, "RADIATOR CAP : Inspection"

.

3. Check water flow sounds of the engine coolant. Refer to 

CO-11, "Refilling"

.

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 

HAC-93, "Removal and Installation"

.