Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti G37 2008 Coupe Approved Infiniti G37 Coupe 2008 hac
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VENTILATION, HEATER & AIR CONDITIONER
A
HEATER & AIR CONDITIONING CONTROL SYSTEM
SECTION HAC B
C
D
E
CONTENTS
AUTOMATIC AIR CONDITIONER WITHOUT LEFT AND RIGHT VENTILATION TEM- F
PERATURE SEPARATELY CONTROL SYSTEM ....14
BASIC INSPECTION ................................... 5
. WITHOUT LEFT AND RIGHT VENTILATION
TEMPERATURE SEPARATELY CONTROL G
DIAGNOSIS AND REPAIR WORKFLOW ......... 5
. SYSTEM : Description ............................................14
.
Work Flow ................................................................ 5
. WITHOUT LEFT AND RIGHT VENTILATION
TEMPERATURE SEPARATELY CONTROL
INSPECTION AND ADJUSTMENT .................... 6
. H
SYSTEM : Fail-Safe ...............................................14
.
WITHOUT LEFT AND RIGHT VENTILATION TEM- WITHOUT LEFT AND RIGHT VENTILATION
PERATURE SEPARATELY CONTROL SYSTEM ...... 6 TEMPERATURE SEPARATELY CONTROL
WITHOUT LEFT AND RIGHT VENTILATION SYSTEM : Component Part Location .....................15 . HAC
TEMPERATURE SEPARATELY CONTROL WITHOUT LEFT AND RIGHT VENTILATION
SYSTEM : Description & Inspection ......................... 6
. TEMPERATURE SEPARATELY CONTROL
WITHOUT LEFT AND RIGHT VENTILATION SYSTEM : Component's role ..................................17. J
TEMPERATURE SEPARATELY CONTROL
WITH LEFT AND RIGHT VENTILATION TEMPER-
SYSTEM : Temperature Setting Trimmer ................ 7
.
ATURE SEPARATELY CONTROL SYSTEM ..........18 .
WITHOUT LEFT AND RIGHT VENTILATION K
WITH LEFT AND RIGHT VENTILATION TEM-
TEMPERATURE SEPARATELY CONTROL
PERATURE SEPARATELY CONTROL SYSTEM
SYSTEM : Foot Position Setting Trimmer ................ 8
.
: Description ............................................................18
.
WITHOUT LEFT AND RIGHT VENTILATION
WITH LEFT AND RIGHT VENTILATION TEM- L
TEMPERATURE SEPARATELY CONTROL
PERATURE SEPARATELY CONTROL SYSTEM
SYSTEM : Inlet Port Memory Function .................... 9
.
: Fail-Safe ...............................................................19
.
WITH LEFT AND RIGHT VENTILATION TEMPER- WITH LEFT AND RIGHT VENTILATION TEM- M
ATURE SEPARATELY CONTROL SYSTEM ............ 9 . PERATURE SEPARATELY CONTROL SYSTEM
WITH LEFT AND RIGHT VENTILATION TEM- : Component Part Location .....................................19 .
PERATURE SEPARATELY CONTROL SYSTEM WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM N
: Description & Inspection ........................................ 9
.
WITH LEFT AND RIGHT VENTILATION TEM- : Component's role .................................................21 .
PERATURE SEPARATELY CONTROL SYSTEM
: Temperature Setting Trimmer .............................. 11
.
AUTOMATIC AIR CONDITIONER SYSTEM .... 23 O
WITH LEFT AND RIGHT VENTILATION TEM- WITHOUT LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM PERATURE SEPARATELY CONTROL SYSTEM ....23
: Foot Position Setting Trimmer .............................. 12
. WITHOUT LEFT AND RIGHT VENTILATION P
WITH LEFT AND RIGHT VENTILATION TEM- TEMPERATURE SEPARATELY CONTROL
PERATURE SEPARATELY CONTROL SYSTEM SYSTEM : System Diagram ...................................23
.
: Inlet Port Memory Function .................................. 13
. WITHOUT LEFT AND RIGHT VENTILATION
TEMPERATURE SEPARATELY CONTROL
FUNCTION DIAGNOSIS ............................. 14
. SYSTEM : System Description ...............................23
.
COMPRESSOR CONTROL FUNCTION ...........14
.
Revision: 2007 June HAC-1 G37 Coupe
WITHOUT LEFT AND RIGHT VENTILATION WITH LEFT AND RIGHT VENTILATION TEMPER-
TEMPERATURE SEPARATELY CONTROL ATURE SEPARATELY CONTROL SYSTEM .......... 58 .
SYSTEM : Component Part Location .................... 28
. WITH LEFT AND RIGHT VENTILATION TEM-
WITHOUT LEFT AND RIGHT VENTILATION PERATURE SEPARATELY CONTROL SYSTEM
TEMPERATURE SEPARATELY CONTROL : System Diagram .................................................. 58
.
SYSTEM : Component Description ....................... 30
. WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM
WITH LEFT AND RIGHT VENTILATION TEMPER- : System Description .............................................. 58
.
ATURE SEPARATELY CONTROL SYSTEM .......... 31 .
WITH LEFT AND RIGHT VENTILATION TEM- INTAKE DOOR CONTROL SYSTEM .............. 60
.
PERATURE SEPARATELY CONTROL SYSTEM System Diagram .................................................... 60
.
: System Diagram .................................................. 31
. System Description ................................................ 60
.
WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM BLOWER MOTOR CONTROL SYSTEM ......... 62
.
: System Description .............................................. 32
.
WITHOUT LEFT AND RIGHT VENTILATION TEM-
WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM ... 62
PERATURE SEPARATELY CONTROL SYSTEM
WITHOUT LEFT AND RIGHT VENTILATION
: Component Part Location .................................... 37
.
TEMPERATURE SEPARATELY CONTROL
WITH LEFT AND RIGHT VENTILATION TEM-
SYSTEM : System Diagram ................................... 62
.
PERATURE SEPARATELY CONTROL SYSTEM
WITHOUT LEFT AND RIGHT VENTILATION
: Component Description ....................................... 39
.
TEMPERATURE SEPARATELY CONTROL
CAN COMMUNICATION SYSTEM .................. 41
. SYSTEM : System Description .............................. 62
.
System Description ................................................ 41
.
WITH LEFT AND RIGHT VENTILATION TEMPER-
DIAGNOSIS SYSTEM (AUTO AMP.) ............... 42
. ATURE SEPARATELY CONTROL SYSTEM .......... 63 .
WITH LEFT AND RIGHT VENTILATION TEM-
WITHOUT LEFT AND RIGHT VENTILATION TEM- PERATURE SEPARATELY CONTROL SYSTEM
PERATURE SEPARATELY CONTROL SYSTEM ... 42 : System Diagram .................................................. 63
.
WITHOUT LEFT AND RIGHT VENTILATION WITH LEFT AND RIGHT VENTILATION TEM-
TEMPERATURE SEPARATELY CONTROL PERATURE SEPARATELY CONTROL SYSTEM
SYSTEM : Diagnosis Description .......................... 42
. : System Description .............................................. 63
.
WITHOUT LEFT AND RIGHT VENTILATION
TEMPERATURE SEPARATELY CONTROL MAGNET CLUTCH CONTROL SYSTEM ........ 65
.
SYSTEM : CONSULT-III Function ......................... 47
. System Diagram .................................................... 65
.
System Description ................................................ 65
.
WITH LEFT AND RIGHT VENTILATION TEMPER-
ATURE SEPARATELY CONTROL SYSTEM .......... 48 . COMPONENT DIAGNOSIS ....................... 67
WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM MODE DOOR MOTOR ..................................... 67
.
: Diagnosis Description .......................................... 48
. Description ............................................................. 67
.
WITH LEFT AND RIGHT VENTILATION TEM- Component Function Check ................................. 67 .
PERATURE SEPARATELY CONTROL SYSTEM Diagnosis Procedure .............................................. 67 .
: CONSULT-III Function ........................................ 53
. AIR MIX DOOR MOTOR .................................. 70
.
MODE DOOR CONTROL SYSTEM ................. 55
. WITHOUT LEFT AND RIGHT VENTILATION TEM-
System Diagram .................................................... 55
. PERATURE SEPARATELY CONTROL SYSTEM ... 70
System Description ................................................ 55
. WITHOUT LEFT AND RIGHT VENTILATION
AIR MIX DOOR CONTROL SYSTEM .............. 57
. TEMPERATURE SEPARATELY CONTROL
SYSTEM : Description ........................................... 70
.
WITHOUT LEFT AND RIGHT VENTILATION TEM- WITHOUT LEFT AND RIGHT VENTILATION
PERATURE SEPARATELY CONTROL SYSTEM ... 57 TEMPERATURE SEPARATELY CONTROL
WITHOUT LEFT AND RIGHT VENTILATION SYSTEM : Component Function Check ............... 70 .
TEMPERATURE SEPARATELY CONTROL WITHOUT LEFT AND RIGHT VENTILATION
SYSTEM : System Diagram .................................. 57
. TEMPERATURE SEPARATELY CONTROL
WITHOUT LEFT AND RIGHT VENTILATION SYSTEM : Diagnosis Procedure ............................ 70 .
TEMPERATURE SEPARATELY CONTROL
WITH LEFT AND RIGHT VENTILATION TEMPER-
SYSTEM : System Description .............................. 57
.
ATURE SEPARATELY CONTROL SYSTEM .......... 71
.
Revision: 2007 June HAC-2 G37 Coupe
WITH LEFT AND RIGHT VENTILATION TEM- Diagnosis Procedure ..............................................92
.
PERATURE SEPARATELY CONTROL SYSTEM Component Inspection ............................................93
. A
: Description ........................................................... 71
.
WITH LEFT AND RIGHT VENTILATION TEM- SUNLOAD SENSOR ......................................... 94
PERATURE SEPARATELY CONTROL SYSTEM Description ..............................................................94
.
Component Function Check .................................94 . B
: Component Function Check ............................... 72 .
WITH LEFT AND RIGHT VENTILATION TEM- Diagnosis Procedure ..............................................94 .
PERATURE SEPARATELY CONTROL SYSTEM Component Inspection ............................................95 .
: Diagnosis Procedure ............................................ 72. C
INTAKE SENSOR ............................................. 97
INTAKE DOOR MOTOR ...................................75
. Description ..............................................................97
.
Description ............................................................. 75
. Component Function Check .................................97 .
D
Component Function Check ................................. 75 . Diagnosis Procedure ..............................................97 .
Diagnosis Procedure .............................................. 75. Component Inspection ............................................98 .
BLOWER MOTOR .............................................77
. POWER SUPPLY AND GROUND CIRCUIT E
FOR AUTO AMP. ............................................ 100
WITHOUT LEFT AND RIGHT VENTILATION TEM- Description ............................................................ 100
.
PERATURE SEPARATELY CONTROL SYSTEM .... 77 Component Function Check ................................. 101 . F
WITHOUT LEFT AND RIGHT VENTILATION Diagnosis Procedure ............................................ 101 .
TEMPERATURE SEPARATELY CONTROL
SYSTEM : Description ........................................... 77
. ECU DIAGNOSIS ...................................... 102
.
WITHOUT LEFT AND RIGHT VENTILATION G
TEMPERATURE SEPARATELY CONTROL ECM ................................................................. 102
SYSTEM : Component Function Check ............... 77 . Reference Value ................................................... 102
.
WITHOUT LEFT AND RIGHT VENTILATION H
AUTO AMP. ..................................................... 119
TEMPERATURE SEPARATELY CONTROL
Reference Value ................................................... 119.
SYSTEM : Diagnosis Procedure ............................ 77.
Wiring Diagram - AIR CONDITIONER CONTROL
WITHOUT LEFT AND RIGHT VENTILATION HAC
SYSTEM - ............................................................. 121
.
TEMPERATURE SEPARATELY CONTROL
Fail-Safe ............................................................... 127
.
SYSTEM : Component Inspection ......................... 80 .
WITH LEFT AND RIGHT VENTILATION TEMPER- SYMPTOM DIAGNOSIS ........................... 129
. J
ATURE SEPARATELY CONTROL SYSTEM .......... 80 . AIR CONDITIONER CONTROL ...................... 129
WITH LEFT AND RIGHT VENTILATION TEM-
Diagnosis Chart By Symptom ............................... 129
.
PERATURE SEPARATELY CONTROL SYSTEM K
: Description ........................................................... 80
. INSUFFICIENT COOLING .............................. 130
WITH LEFT AND RIGHT VENTILATION TEM- Description ............................................................ 130
.
PERATURE SEPARATELY CONTROL SYSTEM Inspection procedure ............................................ 130 .
L
: Component Function Check ............................... 81 .
WITH LEFT AND RIGHT VENTILATION TEM- INSUFFICIENT HEATING ............................... 133
PERATURE SEPARATELY CONTROL SYSTEM Description ............................................................ 133
.
: Diagnosis Procedure ............................................ 81. Inspection procedure ............................................ 133 . M
WITH LEFT AND RIGHT VENTILATION TEM-
PERATURE SEPARATELY CONTROL SYSTEM NOISE .............................................................. 135
: Component Inspection ......................................... 83 . Description ............................................................ 135
.
N
Inspection procedure ............................................ 135 .
MAGNET CLUTCH ............................................85
.
Description ............................................................. 85
. SELF-DIAGNOSIS CANNOT BE PER-
Component Function Check ................................... 85 . FORMED ......................................................... 137 O
Diagnosis Procedure .............................................. 85. Description ............................................................ 137
.
Inspection procedure ............................................ 137 .
AMBIENT SENSOR ..........................................88
. P
Description ............................................................. 88
. MEMORY FUNCTION DOES NOT OPERATE. 138
Component Function Check ................................. 88 . Description ............................................................ 138
.
Diagnosis Procedure .............................................. 88. Inspection procedure ............................................ 138 .
Component Inspection ........................................... 89 .
PRECAUTION ........................................... 139
.
IN-VEHICLE SENSOR ......................................91
.
Description ............................................................. 91
.
PRECAUTIONS ............................................... 139
Component Function Check ................................. 91 .
Revision: 2007 June HAC-3 G37 Coupe
Precaution for Supplemental Restraint System General Refrigerant Precaution ........................... 141 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Refrigerant Connection ........................................ 141
.
SIONER" ...............................................................139
. Service Equipment ............................................... 145
.
Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect ................................139 . COMPRESSOR ............................................... 148
.
Precaution for Battery Service ..............................139 . General Precautions ............................................ 148
.
Precaution for Procedure without Cowl Top Cover 140 ..
LEAK DETECTION DYE ................................. 149
.
Precautions For Xenon Headlamp Service ..........140 .
General Precautions ............................................ 149
.
Working with HFC-134a (R-134a) ........................140 .
Revision: 2007 June HAC-4 G37 Coupe
DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION > [AUTOMATIC AIR CONDITIONER]
BASIC INSPECTION A
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow INFOID:0000000001713761
B
DETAILED FLOW
1.LISTEN TO CUSTOMER COMPLAINT C
Listen to customer complaint. (Get detailed information about the conditions and environment when the symp-
tom occurs.)
D
>> GO TO 2.
2.VERIFY THE SYMPTOM WITH OPERATIONAL CHECK E
Verify the symptom with operational check. Refer to HAC-6, "WITHOUT LEFT AND RIGHT VENTILATION
TEMPERATURE SEPARATELY CONTROL SYSTEM : Description & Inspection" (Without left and right venti-
lation temperature separately control system) or HAC-9, "WITH LEFT AND RIGHT VENTILATION TEMPERA- F
TURE SEPARATELY CONTROL SYSTEM : Description & Inspection" (With left and right ventilation
temperature separately control system).
G
>> GO TO 3.
3.GO TO APPROPRIATE TROUBLE DIAGNOSIS
H
Go to appropriate trouble diagnosis (Refer to HAC-129, "Diagnosis Chart By Symptom" below).
>> GO TO 4.
HAC
4.REPAIR OR REPLACE
Repair or replace the specific parts.
J
>> GO TO 5.
5.FINAL CHECK K
Final check.
Is the inspection result normal?
YES >> CHECK OUT L
NO >> GO TO 3.
M
N
O
P
Revision: 2007 June HAC-5 G37 Coupe
INSPECTION AND ADJUSTMENT
< BASIC INSPECTION > [AUTOMATIC AIR CONDITIONER]
INSPECTION AND ADJUSTMENT
WITHOUT LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY
CONTROL SYSTEM
WITHOUT LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CON-
TROL SYSTEM : Description & Inspection INFOID:0000000001675663
DESCRIPTION
The purpose of the operational check is to check that the individual system operates normally.
Conditions : Engine running at normal operating temperature
INSPECTION PROCEDURE
Memory Function
1. Turn temperature control dial clockwise until 32◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo