Nissan Cube. Manual — part 528

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VENTILATION, HEATER & AIR CONDITIONER

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SECTION

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CONTENTS

HEATER & AIR CONDITIONING SYSTEM

BASIC INSPECTION . . . . . . . . .

3

DIAGNOSIS AND REPAIR WORKFLOW . . ..

3

Work Flow . . . . . . . . . . . . . . . .....

3

SYSTEM DESCRIPTION . . . . . . . ..

5

REFRIGERATION SYSTEM . . . . . . . ...

5

System Diagram . . . . . . . . . . . . . ....

5

System Description . . . . . . . . . . . . ...

5

Component Parts Location . . . . . . . . . ....

6

Component Description . . . . . . . . . . .....

6

SYMPTOM DIAGNOSIS . . . . . . . ...

8

REFRIGERATION SYSTEM SYMPTOMS . . ..

8

Trouble Diagnosis For Unusual Pressure . . . .....

8

Symptom Table . . . . . . . . . . . . . .....

8

NOISE . . . . . . . . . . . . . . . . .

10

Symptom Table . . . . . . . . . . . . . ...

10

PRECAUTION . . . . . . . . . . . ..

11

PRECAUTIONS . . . . . . . . . . . . ..

11

Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" . . . . . . . . . . . . . . . . .

11

Precautions for Removing of Battery Terminal . ...

11

Precaution for Procedure without Cowl Top Cover

.

12

Precautions For Refrigerant System Service . . ..

12

PREPARATION . . . . . . . . . . ...

16

PREPARATION . . . . . . . . . . . . ..

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Special Service Tool . . . . . . . . . . . ...

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Commercial Service Tool . . . . . . . . . .

19

Sealant or/and Lubricant . . . . . . . . . . .

19

PERIODIC MAINTENANCE . . . . . . .

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DESCRIPTION . . . . . . . . . . . . ...

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Service Equipment . . . . . . . . . . . . ..

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REFRIGERANT . . . . . . . . . . . . .

22

Description . . . . . . . . . . . . . . . ...

22

Leak Test . . . . . . . . . . . . . . . . .

22

Recycle Refrigerant . . . . . . . . . . . . .

24

Charge Refrigerant . . . . . . . . . . . . ..

24

LUBRICANT . . . . . . . . . . . . . ..

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Description . . . . . . . . . . . . . . . ...

26

Inspection . . . . . . . . . . . . . . . .

26

Perform Lubricant Return Operation . . . . . ...

26

Lubricant Adjusting Procedure for Components
Replacement Except Compressor . . . . . . ...

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Lubricant Adjusting Procedure for Compressor
Replacement . . . . . . . . . . . . . . ...

27

PERFORMANCE TEST . . . . . . . . .

29

Inspection . . . . . . . . . . . . . . . .

29

REMOVAL AND INSTALLATION . . . ...

31

COMPRESSOR . . . . . . . . . . . . .

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Exploded View . . . . . . . . . . . . . . .

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COMPRESSOR . . . . . . . . . . . . . . ..

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COMPRESSOR : Removal and Installation . . .

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MAGNET CLUTCH . . . . . . . . . . . . .

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MAGNET CLUTCH : Removal and Installation . ...

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Inspection . . . . . . . . . . . . . . . .

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COOLER PIPE AND HOSE . . . . . . . ..

35

Exploded View . . . . . . . . . . . . . . .

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HIGH-PRESSURE FLEXIBLE HOSE . . . . . .

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HIGH-PRESSURE FLEXIBLE HOSE : Removal
and Installation . . . . . . . . . . . . . .

35

LOW-PRESSURE FLEXIBLE HOSE . . . . . . .

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LOW-PRESSURE FLEXIBLE HOSE : Removal
and Installation . . . . . . . . . . . . . .

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HIGH-PRESSURE PIPE . . . . . . . . . . .

37

HA-2

HIGH-PRESSURE PIPE : Removal and Installa-
tion . . . . . . . . . . . . . . . . . . ..

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CONDENSER . . . . . . . . . . . . .

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Exploded View . . . . . . . . . . . . . ....

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CONDENSER . . . . . . . . . . . . . . ....

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CONDENSER : Removal and Installation . . . ..

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LIQUID TANK . . . . . . . . . . . . . . ....

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LIQUID TANK : Removal and Installation . . . ...

40

REFRIGERANT PRESSURE SENSOR . . . . ....

41

REFRIGERANT PRESSURE SENSOR : Remov-
al and Installation . . . . . . . . . . . . ....

41

A/C UNIT ASSEMBLY . . . . . . . . . ...

42

Exploded View (Automatic Air Conditioner) . . ....

42

Exploded View (Manual Air Conditioner) . . . ....

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A/C UNIT ASSEMBLY . . . . . . . . . . . ..

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A/C UNIT ASSEMBLY : Removal and Installation ...

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EVAPORATOR . . . . . . . . . . . . . . ..

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EVAPORATOR : Removal and Installation . . . .

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HEATER CORE . . . . . . . . . . . . . . .

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HEATER CORE : Removal and Installation . . .

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EXPANSION VALVE . . . . . . . . . . .

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Exploded View . . . . . . . . . . . . . .

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Removal and Installation . . . . . . . . . . .

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SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . ..

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SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . . . .

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Compressor . . . . . . . . . . . . . . .

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Lubricant . . . . . . . . . . . . . . . . .

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Refrigerant . . . . . . . . . . . . . . . ..

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Engine Idling Speed . . . . . . . . . . . .

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Belt Tension . . . . . . . . . . . . . . .

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DIAGNOSIS AND REPAIR WORKFLOW

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< BASIC INSPECTION >

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BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Work Flow

INFOID:0000000009950322

OVERALL SEQUENCE

DETAILED FLOW

1.

INTERVIEW FOR MALFUNCTION

Interview the symptom to the customer.

NNIIA0143GB

HA-4

< 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-5, "Work Flow"

(AUTOMATIC AIR

CONDITIONER) or

HAC-133, "Work Flow"

(MANUAL AIR CONDITIONER).

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-29, "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-8, "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-22, "Leak Test"

.

>> GO TO 8.

7.

TROUBLE DIAGNOSIS FOR NOISE

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

HA-10, "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.