Infiniti FX35, FX50 (S51). Manual - part 1122

 

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Infiniti FX35, FX50 (S51). Manual - part 1122

 

 

HA-1

VENTILATION, HEATER & AIR CONDITIONER

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SECTION 

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CONTENTS

HEATER & AIR CONDITIONING SYSTEM

VQ35HR

BASIC INSPECTION  ....................................

4

DIAGNOSIS AND REPAIR WORKFLOW  ..........

4

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

4

SYSTEM DESCRIPTION  ..............................

5

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

5

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

5

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

5

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

6

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

7

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

8

REFRIGERATION SYSTEM SYMPTOMS  ..........

8

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

8

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

8

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

11

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

11

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

11

Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect  ...................................

11

Precaution for Procedure without Cowl Top Cover 

....

12

Working with HFC-134a (R-134a)  ...........................

12

General Refrigerant Precaution  ..............................

12

Refrigerant Connection  ...........................................

13

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

17

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

19

General Precautions  ...............................................

19

LEAK DETECTION DYE  ....................................

20

General Precautions  ...............................................

20

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

21

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

21

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

21

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

24

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

24

PERIODIC MAINTENANCE  ........................

25

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

25

Collection and Charge  .............................................

25

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

29

Maintenance of Lubricant Quantity ..........................

29

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

29

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

30

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

32

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

32

Performance Chart  ..................................................

32

Refrigerant Leakages  ..............................................

33

FLUORESCENT LEAK DETECTOR  ................

34

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

34

ELECTRICAL LEAK DETECTOR  ....................

35

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

35

REMOVAL AND INSTALLATION  ...............

38

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

38

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

38

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

38

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

39

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

40

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

40

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

40

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

40

HIGH-PRESSURE FLEXIBLE HOSE  ........................

41

HA-2

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

41

HIGH-PRESSURE PIPE 1 .........................................

42

HIGH-PRESSURE PIPE 1 : Removal and Installa-
tion .........................................................................
.

42

LOW-PRESSURE PIPE 2  .........................................

43

LOW-PRESSURE PIPE 2 : Removal and Installa-
tion .........................................................................
.

43

LOW-PRESSURE PIPE 1 AND HIGH-PRESSURE 
PIPE 2 .......................................................................
.

44

LOW-PRESSURE PIPE 1 AND HIGH-PRES-
SURE PIPE 2 : Removal and Installation  ..............
.

44

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

47

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

47

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

47

CONDENSER : Removal and Installation  ..............

47

CONDENSER PIPE ASSEMBLY ..............................

48

CONDENSER PIPE ASSEMBLY : Removal and 
Installation .............................................................
.

48

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

49

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

49

REFRIGERANT PRESSURE SENSOR ....................

50

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

50

HEATER & COOLING UNIT ASSEMBLY  .........

51

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

51

HEATER & COOLING UNIT ASSEMBLY  ................

53

HEATER & COOLING UNIT ASSEMBLY : Re-
moval and Installation  ............................................
.

53

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

55

HEATER CORE : Removal and Installation  ...........

55

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

55

EVAPORATOR : Removal and Installation  ............

55

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

56

EXPANSION VALVE : Removal and Installation ....

56

BLOWER UNIT  ..................................................

57

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

57

BLOWER UNIT  .........................................................

57

BLOWER UNIT : Removal and Installation  ............

57

BLOWER MOTOR  ....................................................

58

BLOWER MOTOR : Removal and Installation  .......

58

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

59

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

59

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

59

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

59

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

59

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

59

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

59

VK50VE

BASIC INSPECTION ..................................

60

DIAGNOSIS AND REPAIR WORKFLOW .........

60

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

60

SYSTEM DESCRIPTION  ...........................

61

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

61

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

61

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

61

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

62

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

63

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

64

REFRIGERATION SYSTEM SYMPTOMS  ........

64

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

64

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

64

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

67

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

67

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

67

Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect ...................................

67

Precaution for Procedure without Cowl Top Cover ...

68

Working with HFC-134a (R-134a) ...........................

68

General Refrigerant Precaution  ..............................

68

Refrigerant Connection  ...........................................

69

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

72

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

75

General Precautions  ...............................................

75

LEAK DETECTION DYE  ...................................

76

General Precautions  ...............................................

76

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

77

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

77

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

77

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

80

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

80

PERIODIC MAINTENANCE  .......................

81

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

81

Collection and Charge  ............................................

81

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

85

Maintenance of Lubricant Quantity  .........................

85

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

85

HA-3

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

86

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

88

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

88

Performance Chart  ..................................................

88

Refrigerant Leakages ..............................................

89

FLUORESCENT LEAK DETECTOR  .................

90

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

90

ELECTRICAL LEAK DETECTOR ......................

91

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

91

REMOVAL AND INSTALLATION ...............

94

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

94

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

94

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

94

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

95

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

96

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

96

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

96

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

96

HIGH-PRESSURE FLEXIBLE HOSE ........................

97

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

97

HIGH-PRESSURE PIPE 1  .........................................

98

HIGH-PRESSURE PIPE 1 : Removal and Installa-
tion ..........................................................................

98

LOW-PRESSURE PIPE 2 ..........................................

99

LOW-PRESSURE PIPE 2 : Removal and Installa-
tion ..........................................................................

99

LOW-PRESSURE PIPE 3 ........................................

100

LOW-PRESSURE PIPE 3 : Removal and Installa-
tion ........................................................................

100

LOW-PRESSURE PIPE 1 AND HIGH-PRESSURE 
PIPE 2  ......................................................................

101

LOW-PRESSURE PIPE 1 AND HIGH-PRES-
SURE PIPE 2 : Removal and Installation ..............

101

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

104

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

104

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

104

CONDENSER : Removal and Installation  .............

104

CONDENSER PIPE ASSEMBLY ............................

105

CONDENSER PIPE ASSEMBLY : Removal and 
Installation .............................................................

105

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

106

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

106

REFRIGERANT PRESSURE SENSOR ...................

107

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

107

HEATER & COOLING UNIT ASSEMBLY  ......

108

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

108

HEATER & COOLING UNIT ASSEMBLY  ...............

110

HEATER & COOLING UNIT ASSEMBLY : Re-
moval and Installation ............................................

110

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

112

HEATER CORE : Removal and Installation  ..........

112

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

112

EVAPORATOR : Removal and Installation ...........

112

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

113

EXPANSION VALVE : Removal and Installation ...

113

BLOWER UNIT  ...............................................

114

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

114

BLOWER UNIT  ........................................................

114

BLOWER UNIT : Removal and Installation  ...........

114

BLOWER MOTOR  ...................................................

115

BLOWER MOTOR : Removal and Installation  ......

115

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

116

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

116

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

116

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

116

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

116

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

116

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

116

HA-4

< BASIC INSPECTION >

[VQ35HR]

DIAGNOSIS AND REPAIR WORKFLOW

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Work Flow

INFOID:0000000005249877

DETAILED FLOW

1.

LISTEN TO CUSTOMER COMPLAINT

Listen to customer complaint. (Get detailed information about the conditions and environment when the symp-
tom occurs.)

>> GO TO 2.

2.

VERIFY THE SYMPTOM WITH OPERATIONAL CHECK

Verify the symptom with operational check. Refer to 

HAC-5, "WITHOUT ACCS : Description & Inspection"

(WITHOUT ACCS) or 

HAC-8, "WITH ACCS : Description & Inspection"

 (WITH ACCS).

>> GO TO 3.

3.

GO TO APPROPRIATE TROUBLE DIAGNOSIS

Go to appropriate trouble diagnosis [Refer to 

HAC-154, "Diagnosis Chart By Symptom"

 below].

>> GO TO 4.

4.

REPAIR OR REPLACE

Repair or replace the specific parts.

>> GO TO 5.

5.

FINAL CHECK

Final check.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 3.

 

 

 

 

 

 

 

Content   ..  1120  1121  1122  1123   ..