Infiniti G37 Coupe. Manual - part 753

 

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Infiniti G37 Coupe. Manual - part 753

 

 

HAC-1

VENTILATION, HEATER & AIR CONDITIONER

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SECTION 

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CONTENTS

HEATER & AIR CONDITIONING CONTROL SYSTEM

AUTOMATIC AIR CONDITIONER

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

5

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

5

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

5

INSPECTION AND ADJUSTMENT .....................

6

WITHOUT LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM ......

6

WITHOUT LEFT AND RIGHT VENTILATION 
TEMPERATURE SEPARATELY CONTROL 
SYSTEM : Description & Inspection ........................
..

6

WITHOUT LEFT AND RIGHT VENTILATION 
TEMPERATURE SEPARATELY CONTROL 
SYSTEM : Temperature Setting Trimmer  ...............
..

7

WITHOUT LEFT AND RIGHT VENTILATION 
TEMPERATURE SEPARATELY CONTROL 
SYSTEM : Foot Position Setting Trimmer  ...............
..

8

WITHOUT LEFT AND RIGHT VENTILATION 
TEMPERATURE SEPARATELY CONTROL 
SYSTEM : Inlet Port Memory Function  ...................
..

9

WITH LEFT AND RIGHT VENTILATION TEMPER-
ATURE SEPARATELY CONTROL SYSTEM  ...........
..

9

WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM 
: Description & Inspection  .......................................
..

9

WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM 
: Temperature Setting Trimmer  ...............................

11

WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM 
: Foot Position Setting Trimmer ...............................

12

WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM 
: Inlet Port Memory Function  ...................................

13

FUNCTION DIAGNOSIS ..............................

14

COMPRESSOR CONTROL FUNCTION ............

14

WITHOUT LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM ....

14

WITHOUT LEFT AND RIGHT VENTILATION 
TEMPERATURE SEPARATELY CONTROL 
SYSTEM : Description .............................................

14

WITHOUT LEFT AND RIGHT VENTILATION 
TEMPERATURE SEPARATELY CONTROL 
SYSTEM : Fail-Safe  ................................................

14

WITHOUT LEFT AND RIGHT VENTILATION 
TEMPERATURE SEPARATELY CONTROL 
SYSTEM : Component Part Location  ......................

15

WITHOUT LEFT AND RIGHT VENTILATION 
TEMPERATURE SEPARATELY CONTROL 
SYSTEM : Component’s role ...................................

17

WITH LEFT AND RIGHT VENTILATION TEMPER-
ATURE SEPARATELY CONTROL SYSTEM  ...........

18

WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM 
: Description .............................................................

18

WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM 
: Fail-Safe  ................................................................

19

WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM 
: Component Part Location ......................................

19

WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM 
: Component’s role  ..................................................

21

AUTOMATIC AIR CONDITIONER SYSTEM  ....

23

WITHOUT LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM ....

23

WITHOUT LEFT AND RIGHT VENTILATION 
TEMPERATURE SEPARATELY CONTROL 
SYSTEM : System Diagram  ....................................

23

WITHOUT LEFT AND RIGHT VENTILATION 
TEMPERATURE SEPARATELY CONTROL 
SYSTEM : System Description ................................

23

HAC-2

WITHOUT LEFT AND RIGHT VENTILATION 
TEMPERATURE SEPARATELY CONTROL 
SYSTEM : Component Part Location  ....................
.

28

WITHOUT LEFT AND RIGHT VENTILATION 
TEMPERATURE SEPARATELY CONTROL 
SYSTEM : Component Description .......................
.

30

WITH LEFT AND RIGHT VENTILATION TEMPER-
ATURE SEPARATELY CONTROL SYSTEM ..........
.

31

WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM 
: System Diagram  ..................................................
.

31

WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM 
: System Description ..............................................
.

32

WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM 
: Component Part Location  ....................................
.

37

WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM 
: Component Description  .......................................
.

39

CAN COMMUNICATION SYSTEM  ...................

41

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

41

DIAGNOSIS SYSTEM (AUTO AMP.)  ................

42

WITHOUT LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM ...

42

WITHOUT LEFT AND RIGHT VENTILATION 
TEMPERATURE SEPARATELY CONTROL 
SYSTEM : Diagnosis Description ..........................
.

42

WITHOUT LEFT AND RIGHT VENTILATION 
TEMPERATURE SEPARATELY CONTROL 
SYSTEM : CONSULT-III Function .........................
.

47

WITH LEFT AND RIGHT VENTILATION TEMPER-
ATURE SEPARATELY CONTROL SYSTEM ..........
.

48

WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM 
: Diagnosis Description  ..........................................
.

48

WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM 
: CONSULT-III Function  ........................................
.

53

MODE DOOR CONTROL SYSTEM  ..................

55

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

55

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

55

AIR MIX DOOR CONTROL SYSTEM  ...............

57

WITHOUT LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM ...

57

WITHOUT LEFT AND RIGHT VENTILATION 
TEMPERATURE SEPARATELY CONTROL 
SYSTEM : System Diagram ..................................
.

57

WITHOUT LEFT AND RIGHT VENTILATION 
TEMPERATURE SEPARATELY CONTROL 
SYSTEM : System Description ..............................
.

57

WITH LEFT AND RIGHT VENTILATION TEMPER-
ATURE SEPARATELY CONTROL SYSTEM  ...........

58

WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM 
: System Diagram  ...................................................

58

WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM 
: System Description  ...............................................

58

INTAKE DOOR CONTROL SYSTEM  ...............

60

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

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

60

BLOWER MOTOR CONTROL SYSTEM  ..........

62

WITHOUT LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM ....

62

WITHOUT LEFT AND RIGHT VENTILATION 
TEMPERATURE SEPARATELY CONTROL 
SYSTEM : System Diagram ....................................

62

WITHOUT LEFT AND RIGHT VENTILATION 
TEMPERATURE SEPARATELY CONTROL 
SYSTEM : System Description ...............................

62

WITH LEFT AND RIGHT VENTILATION TEMPER-
ATURE SEPARATELY CONTROL SYSTEM  ...........

63

WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM 
: System Diagram  ...................................................

63

WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM 
: System Description  ...............................................

63

MAGNET CLUTCH CONTROL SYSTEM  .........

65

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

65

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

65

COMPONENT DIAGNOSIS  .......................

67

MODE DOOR MOTOR  ......................................

67

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

67

Component Function Check ..................................

67

Diagnosis Procedure ...............................................

67

AIR MIX DOOR MOTOR  ...................................

70

WITHOUT LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM ....

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WITHOUT LEFT AND RIGHT VENTILATION 
TEMPERATURE SEPARATELY CONTROL 
SYSTEM : Description  ............................................

70

WITHOUT LEFT AND RIGHT VENTILATION 
TEMPERATURE SEPARATELY CONTROL 
SYSTEM : Component Function Check ................

70

WITHOUT LEFT AND RIGHT VENTILATION 
TEMPERATURE SEPARATELY CONTROL 
SYSTEM : Diagnosis Procedure .............................

70

WITH LEFT AND RIGHT VENTILATION TEMPER-
ATURE SEPARATELY CONTROL SYSTEM  ...........

71

HAC-3

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HAC

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WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM 
: Description  ............................................................

71

WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM 
: Component Function Check  ................................

72

WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM 
: Diagnosis Procedure .............................................

72

INTAKE DOOR MOTOR  ....................................

75

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

75

Component Function Check ..................................

75

Diagnosis Procedure ...............................................

75

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

77

WITHOUT LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM ....

77

WITHOUT LEFT AND RIGHT VENTILATION 
TEMPERATURE SEPARATELY CONTROL 
SYSTEM : Description  ............................................

77

WITHOUT LEFT AND RIGHT VENTILATION 
TEMPERATURE SEPARATELY CONTROL 
SYSTEM : Component Function Check  ................

77

WITHOUT LEFT AND RIGHT VENTILATION 
TEMPERATURE SEPARATELY CONTROL 
SYSTEM : Diagnosis Procedure  .............................

77

WITHOUT LEFT AND RIGHT VENTILATION 
TEMPERATURE SEPARATELY CONTROL 
SYSTEM : Component Inspection  ..........................

80

WITH LEFT AND RIGHT VENTILATION TEMPER-
ATURE SEPARATELY CONTROL SYSTEM  ...........

80

WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM 
: Description  ............................................................

80

WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM 
: Component Function Check  ................................

81

WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM 
: Diagnosis Procedure .............................................

81

WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM 
: Component Inspection  ..........................................

83

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

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

85

Component Function Check ....................................

85

Diagnosis Procedure ...............................................

85

AMBIENT SENSOR  ...........................................

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

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Component Function Check ..................................

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Diagnosis Procedure ...............................................

88

Component Inspection  ............................................

89

IN-VEHICLE SENSOR  .......................................

91

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

91

Component Function Check ..................................

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Diagnosis Procedure  ...............................................

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Component Inspection .............................................

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SUNLOAD SENSOR .........................................

94

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

94

Component Function Check ..................................

94

Diagnosis Procedure  ...............................................

94

Component Inspection .............................................

95

INTAKE SENSOR  .............................................

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

97

Component Function Check ..................................

97

Diagnosis Procedure  ...............................................

97

Component Inspection .............................................

98

POWER SUPPLY AND GROUND CIRCUIT 
FOR AUTO AMP.  ............................................

100

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

100

Component Function Check  ..................................

101

Diagnosis Procedure  .............................................

101

ECU DIAGNOSIS .......................................

102

ECM .................................................................

102

Reference Value ....................................................

102

AUTO AMP. .....................................................

119

Reference Value ....................................................

119

Wiring Diagram - AIR CONDITIONER CONTROL 
SYSTEM - ..............................................................

121

Fail-Safe ................................................................

127

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

129

AIR CONDITIONER CONTROL ......................

129

Diagnosis Chart By Symptom ................................

129

INSUFFICIENT COOLING  ..............................

130

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

130

Inspection procedure  .............................................

130

INSUFFICIENT HEATING ...............................

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

133

Inspection procedure  .............................................

133

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

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

135

Inspection procedure  .............................................

135

SELF-DIAGNOSIS CANNOT BE PER-
FORMED .........................................................

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

137

Inspection procedure  .............................................

137

MEMORY FUNCTION DOES NOT OPERATE .

138

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

138

Inspection procedure  .............................................

138

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

139

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

139

 

 

 

 

 

 

 

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