Nissan Juke (2016 year). Service Repair Manual - part 416

 

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Nissan Juke (2016 year). Service Repair Manual - part 416

 

 

COMPONENT PARTS

HA-13

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SYSTEM DESCRIPTION

COMPONENT PARTS

Component Parts Location

INFOID:0000000012197104

Component Description

INFOID:0000000012197105

JMIIA1124ZZ

1.

Expansion valve

2.

Condenser

3.

Compressor

4.

Liquid tank

5.

Refrigerant pressure sensor

6.

Evaporator

A.

Built-in A/C unit assembly

Component

Description

Evaporator

The mist form liquid refrigerant transforms to gas by evaporation by the air conveyed from blower 
motor. The air is cooled by the heat by evaporation.

Condenser

Cools refrigerant discharged from compressor, and transforms it to liquid refrigerant.

Compressor

Intakes, compresses, and discharges refrigerant, to circulate refrigerant inside the refrigerant cycle.

Refrigerant pressure sensor

Refer to 

HAC-10, "Refrigerant Pressure Sensor"

 (Automatic air conditioning) or 

HAC-107, "Refriger-

ant Pressure Sensor"

 (Manual air conditioning).

Liquid tank

Eliminates foreign matter in refrigerant, and stores temporarily liquid refrigerant.

Expansion valve

Transforms high-pressure liquid refrigerant to mist form low-pressure liquid refrigerant by drawing 
function.

Revision: November 2015

2016 JUKE

HA-14

< SYSTEM DESCRIPTION >

SYSTEM

SYSTEM

System Diagram

INFOID:0000000012197106

System Description

INFOID:0000000012197107

REFRIGERANT CYCLE

Refrigerant Flow

The refrigerant from the compressor, flows the condenser with liquid tank, the evaporator, and returns to the

compressor. The refrigerant evaporation in the evaporator is controlled by an expansion valve.

Freeze Protection

When evaporator fin temperature is low, compressor stops so that freeze of evaporator can be prevented.

• Refer to 

HAC-15, "Compressor Control"

. (Automatic air conditioning)

• Refer to 

HAC-108, "Compressor Control"

. (Manual air conditioning)

REFRIGERANT SYSTEM PROTECTION

Refrigerant Pressure Sensor

• The refrigerant system is protected against excessively high- or low-pressures by the refrigerant pressure

sensor, installed at the upper liquid tank. The refrigerant pressure sensor detects the pressure inside the

refrigerant line and sends the voltage signal to the ECM if the system pressure rises above, or falls below

the specifications. 

• ECM turns the A/C relay to OFF and stops the compressor when the high-pressure side detected by refriger-

ant pressure sensor is following conditions;

- Approximately 3,120 kPa (31.8 kg/cm

2

, 452 psi) or more (Engine speed is less than 1,500 rpm.)

- Approximately 2,740 kPa (27.9 kg/cm

2

, 397 psi) or more (Engine speed is 1,500 rpm or more.)

- Approximately 140 kPa (1.4 kg/cm

2

, 17 psi) or less

Pressure Relief Valve

The refrigerant system is also protected by a pressure relief valve, located in the rear head of the compressor.

The release port on the pressure relief valve automatically opens and releases refrigerant into the atmosphere

when the pressure of refrigerant in the system increases to an unusual level [more than 3,800 kPa (38.8 kg/
cm

2

, 551 psi)].

JPIIA1366GB

Revision: November 2015

2016 JUKE

DIAGNOSIS AND REPAIR WORKFLOW

HA-15

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BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Work Flow

INFOID:0000000012197108

OVERALL SEQUENCE

DETAILED FLOW

1.

INTERVIEW FOR MALFUNCTION

Interview the symptom to the customer.

NNIIA0143GB

Revision: November 2015

2016 JUKE

HA-16

< BASIC INSPECTION >

DIAGNOSIS AND REPAIR WORKFLOW

>> GO TO 2.

2.

SYMPTOM CHECK

Check the symptom from the customer's information. Check that any symptom occurs other than the inter-

viewed symptom.

Insufficient cooling/heating>>GO TO 3.

Refrigerant leakage>>GO TO 6.

Noise >> GO TO 7.

3.

CONTROL SYSTEM DIAGNOSIS

Perform the system diagnosis for the A/C control system.

• Refer to 

HAC-45, "Work Flow"

(Automatic air conditioning)

• Refer to 

HAC-125, "Work Flow"

. (Manual air conditioning)

Is A/C control system normal?

YES

>> GO TO 4.

NO

>> GO TO 8.

4.

PERFORMANCE TEST

Perform the performance test. Check the operation of each part. Refer to 

HA-24, "Inspection"

.

>> GO TO 5.

5.

TROUBLE DIAGNOSIS FOR UNUSUAL PRESSURE

Diagnose using a manifold gauge whenever system's high and/or low side pressure(s) is/are unusual. Specify

the malfunctioning part. Refer to 

HA-25, "Symptom Table"

.

Low refrigerant charge>>GO TO 6.

Except above>>GO TO 8.

6.

CHECK REFRIGERANT FOR LEAKAGES

Check refrigerant for leakages. Specify the malfunctioning part. Refer to 

HA-17, "Leak Test"

.

>> GO TO 8.

7.

TROUBLE DIAGNOSIS FOR NOISE

Perform trouble diagnosis for noise. Specify the malfunctioning part. Refer to 

HA-27, "Symptom Table"

.

>> GO TO 8.

8.

MALFUNCTION PART REPAIR

Repair or replace the malfunctioning part.

>> GO TO 9.

9.

REPAIR CHECK (OPERATION CHECK)

Check the operation of each part.
Does it operate normally?

YES

>> INSPECTION END

NO

>> GO TO 2.

Revision: November 2015

2016 JUKE

REFRIGERANT

HA-17

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REFRIGERANT

Description

INFOID:0000000012197109

CONNECTION OF SERVICE TOOLS AND EQUIPMENT

Leak Test

INFOID:0000000012197110

CHECK REFRIGERANT LEAKAGE USING FLUORESCENT LEAK DETECTION DYE

1. Install a fender cover (1).
2. Wear UV safety goggles (2) provided with refrigerant dye leak detection kit.
3. Connect power cable (4) of UV lamp (6) to positive and negative terminals of the battery (3).
4. Press UV lamp switch (5) and check A/C system for refrigerant leakage. (Where refrigerant leakage

occurs, fluorescent leak detection dye appears in green color.)

WARNING:

1.

Shut-off valve

2.

A/C service valve

3.

Recovery/recycling/recharging 
equipment

4.

Refrigerant container (HFC-134a)

5.

Weight scale (J-39650)

6.

Vacuum pump (J-39649)

7.

Manifold gauge set (J-39183)

A.

Preferred (best) method

B.

Alternative method

C.

For charging

JSIIA0239ZZ

RJIA3815J

Revision: November 2015

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HA-18

< BASIC INSPECTION >

REFRIGERANT

Never look directly into UV lamp light source.

NOTE:

• For continuous operating time of UV lamp, follow the manufacturer operating instructions.

• Illuminate piping joints from different angles using UV lamp and check that there is no leakage.

• Use a mirror in area that is difficult to see to check refrigerant leakage.

• Refrigerant leakage from evaporator can be detected by soaking cotton swab or a similar material with

drain hose water and illuminating it using UV lamp.

• Dust, dirt, and packing materials adhesive used for condenser, evaporator, and other locations may flu-

oresce. Be careful not to misidentify leakage.

5. Repair or replace parts where refrigerant leakage occurs and wipe off fluorescent leak detection dye.

NOTE:

Completely wipe off fluorescent leak detection dye from gaps between parts, screw threads, and others

using a cotton swab or similar materials.

6. Use a UV lamp to check that no fluorescent leak detection dye remains after finishing work.

WARNING:

Never look directly into UV lamp light source.

NOTE:

• For continuous operating time of UV lamp, follow the manufacturer operating instructions.

• Dust, dirt, and packing materials adhesive used for condenser, evaporator, and other locations may flu-

oresce. Be careful not to misidentify leakage.

CHECK REFRIGERANT LEAKAGE USING ELECTRICAL LEAK DETECTOR

WARNING:

Never check refrigerant leakage while the engine is running.

CAUTION:

Be careful of the following items so that inaccurate checks or misidentifications are avoided.

• Never allow refrigerant vapor, shop chemical vapors, cigarette smoke, or others around the vehicle.

• Always check refrigerant leakage in a low air flow environment so that refrigerant may not disperse

when leakage occurs.

1. Stop the engine.
2. Connect recovery/recycling/recharging equipment or manifold gauge set to A/C service valve.
3. Check that A/C refrigerant pressure is 345 kPa (3.52 kg/cm

2

, 50 psi) or more when temperature is 16

°

C

(61

°

F) or more. When pressure is lower than the specified value, recycle refrigerant completely and fill

refrigerant to the specified level.

NOTE:

Leakages may not be detected if A/C refrigerant pressure is 345 kPa (3.52 kg/cm

2

, 50 psi) or less when

temperature is less than 16

°

C (61

°

F).

4. Clean area where refrigerant leakage check is performed, and check refrigerant leakage along all sur-

faces of pipe connections and A/C system components using electrical leak detector probe.

CAUTION:

• Continue checking when a leakage is found. Always continue and complete checking along all

pipe connections and A/C system components for additional leakage.

• When a leakage is detected, clean leakage area using compressed air and check again.

• When checking leakage of cooling unit inside, always clean inside of drain hose so that the

probe surface may not be exposed to water or dirt.

NOTE:

• Always check leakage starting from high-pressure side and continue to low-pressure side.

• When checking leakage of cooling unit inside, operate blower fan motor for 15 minutes or more at the

maximum fan speed while the engine is stopped, and then insert electrical leak detector probe into drain

hose and hold for 10 minutes or more.

• When disconnecting shut-off valve that is connected to A/C service valve, always evacuate remaining

refrigerant so that misidentification can be avoided.

5. Repair or replace parts where refrigerant leakage is detected. (Leakage is detected but leakage area is

unknown. GO TO 6.)

6. Start the engine and set A/C control in the following conditions.

• A/C switch ON

• Air flow: VENT (ventilation)

• Intake door position: Recirculation

Revision: November 2015

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REFRIGERANT

HA-19

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• Temperature setting: Full cold

• Fan (blower) speed: Maximum speed set

7. Run the engine at approximately 1,500 rpm for 2 minutes or more.
8. Stop the engine. Check again for refrigerant leakage. GO TO 4.

WARNING:

Be careful not to get burned when the engine is hot.

NOTE:

• Start refrigerant leakage check immediately after the engine is

stopped.

• When refrigerant circulation is stopped, pressure on the low-

pressure side rises gradually, and after this, pressure on the

high-pressure side falls gradually.

• The higher the pressure is, the easier it is to find the refriger-

ant leakage.

Recycle Refrigerant

INFOID:0000000012197111

WARNING:

• Always use HFC-134a for A/C refrigerant. If CFC-12 is accidentally charged, compressor is damaged

due to insufficient lubrication.

• Always observe and follow precautions described on refrigerant container. Incorrect handling may

result in an explosion of refrigerant container, frostbite, or the loss of eyesight.

• Never breathe A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose, or

throat.

• Never allow HFC-134a to be exposed to an open flame or others because it generates poisonous gas

when in contact with high temperature objects. Keep workshop well ventilated.

1. Perform lubricant return operation. Refer to 

HA-21, "Perform Lubricant Return Operation"

. (If refrigerant or

lubricant leakage is detected in a large amount, omit this step, and then GO TO 2.)

CAUTION:

Never perform lubricant return operation if a large amount of refrigerant or lubricant leakage is

detected.

2. Check gauge pressure readings of recovery/recycling/recharging equipment. When remaining pressure

exists, recycle refrigerant from high-pressure hose and low-pressure hose.

NOTE:

Follow manufacturer instructions for the handling or maintenance of the equipment. Never fill the equip-

ment with non-specified refrigerant.

3. Remove A/C service valve cap from the vehicle.
4. Connect recovery/recycling/recharging equipment to A/C service valve.
5. Operate recovery/recycling/recharging equipment, and recycle refrigerant from the vehicle.
6. Evacuate air for 10 minutes or more to remove any remaining refrigerant integrated to compressor lubri-

cant, etc.

7. Refrigerant recycle operation is complete.

Charge Refrigerant

INFOID:0000000012197112

WARNING:

• Always use HFC-134a for A/C refrigerant. If CFC-12 is accidentally charged, compressor is damaged

due to insufficient lubrication.

• Always observe and follow precautions described on refrigerant container. Incorrect handling may

result in an explosion of refrigerant container, frostbite, or the loss of eyesight.

• Never breathe A/C refrigerant and lubricant vapor or mist. Exposure my irritate eyes, nose, or throat.

• Never allow HFC-134a to be exposed to an open flame or others because it generates poisonous gas

when in contact with high temperature objects. Keep workshop well ventilated.

1. Connect recovery/recycling/recharging equipment to the A/C service valve.

SHA839E

Revision: November 2015

2016 JUKE

HA-20

< BASIC INSPECTION >

REFRIGERANT

2. Operate recovery/recycling/recharging equipment, and evacuate air from A/C system for 25 minutes or

more.

CAUTION:

Evacuate air for 15 minutes or more if the parts are replaced.

3. Check the airtightness of A/C system for 25 minutes or more. If pressure rises more than the specified

level, charge A/C system with approximately 200 g (0.4 lb) refrigerant and check that there is no refriger-

ant leakage. Refer to 

HA-17, "Leak Test"

.

CAUTION:

Check the airtightness for 15 minutes or more if the parts are replaced.

4. If parts other than compressor are replaced, fill compressor lubricant according to parts that are replaced.
5. Charge the specified amount of refrigerant to A/C system.
6. Check that A/C system operates normally.
7. Disconnect recovery/recycling/recharging equipment. (Collect the refrigerant from the high-pressure hose

and low-pressure hose of recovery/recycling/recharging equipment.)

8. Install A/C service valve cap.
9. Refrigerant charge is complete.

Revision: November 2015

2016 JUKE

 

 

 

 

 

 

 

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