Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Altima 2006-2009 Approved TB Nissan Altima 2009 HAC
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VENTILATION, HEATER & AIR CONDITIONER
HAC
A
B
SECTION
HEATER & AIR CONDITIONING CONTROL SYSTEM C
D
E
CONTENTS
AUTOMATIC AIR CONDITIONER Diagnosis Procedure ..............................................32
. F
BASIC INSPECTION ................................... 4
. AIR MIX DOOR MOTOR ................................... 34
Description ..............................................................34
.
G
DIAGNOSIS AND REPAIR WORKFLOW ......... 4
. Diagnosis Procedure ..............................................35 .
Work Flow ................................................................ 4
.
INTAKE DOOR MOTOR ................................... 37
INSPECTION AND ADJUSTMENT .................... 5
. Description ..............................................................37
. H
Description and Conditions ...................................... 5
. Diagnosis Procedure ..............................................38 .
Operational Check ................................................... 5
.
Auxiliary Mechanism Trimmers ................................ 6. BLOWER MOTOR ............................................ 40
HAC
Description ..............................................................40
.
FUNCTION DIAGNOSIS .............................. 9
. Component Function Check ...................................41 .
Diagnosis Procedure ..............................................42 .
FUNCTION INFORMATION ............................... 9
. J
Component Part Location ........................................ 9
. MAGNET CLUTCH ........................................... 46
Component's Role .................................................. 11
. Description ..............................................................46
.
Component Function Check ...................................46 .
REFRIGERATION SYSTEM .............................13
. K
Diagnosis Procedure ..............................................47 .
Refrigerant Cycle ................................................... 13
.
Refrigerant System Protection ............................... 13 . AMBIENT SENSOR .......................................... 50
Description ..............................................................50
. L
AUTOMATIC AIR CONDITIONER SYSTEM ....14 Diagnosis Procedure ..............................................50 .
System Diagram ..................................................... 14
. Component Inspection ............................................51 .
System Description ................................................ 14
.
M
Component Part Location ...................................... 20
. IN-VEHICLE SENSOR ...................................... 53
Component Description .......................................... 20
. Component Description ..........................................53
.
Diagnosis Procedure ..............................................53
.
DIAGNOSIS SYSTEM (ECM) ............................21
. Component Inspection ............................................55
. N
CONSULT-III Function ........................................... 21
.
SUNLOAD SENSOR ......................................... 56
SELF-DIAGNOSIS FUNCTION .........................22
. Description ..............................................................56
.
Diagnosis Description ............................................ 22
. O
Diagnosis Procedure ..............................................56 .
Auxiliary Mechanism Trimmers .............................. 27. Component Inspection ............................................57 .
COMPONENT DIAGNOSIS ........................ 28
. INTAKE SENSOR ............................................. 59 P
Description ..............................................................59
.
LAN SYSTEM CIRCUIT ....................................28
. Diagnosis Procedure ..............................................59 .
Description ............................................................. 28
. Component Inspection ............................................60 .
Diagnosis Procedure .............................................. 28.
POWER SUPPLY AND GROUND CIRCUIT
MODE DOOR MOTOR ......................................31
. FOR FRONT AIR CONTROL ............................ 61
Description ............................................................. 31
.
Description ..............................................................61
.
Revision: July 2008 HAC-1 2009 Altima
Component Function Check .................................. 61. AIR CONDITIONER CONTROL ...................... 107
.
Diagnosis Procedure ............................................. 61
. System Diagram .................................................. 107
.
System Description .............................................. 107
.
ECU DIAGNOSIS ....................................... 63
. Component Part Location .................................... 113.
Component Description ....................................... 113
.
AIR CONDITIONER CONTROL ....................... 63
.
Reference Value .................................................... 63. DIAGNOSIS SYSTEM (ECM) .......................... 114
.
Wiring Diagram - Air Conditioner Control (Auto) - CONSULT-III Function ......................................... 114
.
Coupe .................................................................... 65
.
Wiring Diagram - Air Conditioner Control (Auto) - COMPONENT DIAGNOSIS ...................... 115
Sedan .................................................................... 74
.
LAN SYSTEM CIRCUIT .................................. 115
.
SYMPTOM DIAGNOSIS ............................ 83
. Description ........................................................... 115
.
Diagnosis Procedure ............................................ 115 .
AIR CONDITIONER CONTROL ....................... 83
.
Symptom Matrix Chart ......................................... 83
. MODE DOOR MOTOR .................................... 118
.
Description ........................................................... 118
.
INSUFFICIENT COOLING ................................ 84
. Diagnosis Procedure ............................................ 119 .
Component Function Check .................................. 84 .
Diagnostic Work Flow ............................................ 85
. AIR MIX DOOR MOTOR ................................. 121
.
Performance Chart ................................................ 87
. Description ........................................................... 121
.
Trouble Diagnosis For Abnormal Pressure ............ 88 . Diagnosis Procedure ............................................ 122 .
INSUFFICIENT HEATING ................................ 92
. INTAKE DOOR MOTOR .................................. 124
.
Component Function Check .................................. 92
. Description ........................................................... 124
.
Diagnosis Procedure ............................................ 124 .
NOISE ............................................................... 94
.
Component Function Check .................................. 94
. BLOWER MOTOR ........................................... 126
.
Description ........................................................... 126
.
SELF-DIAGNOSIS CANNOT BE PER- Component Function Check ................................ 126 .
FORMED ........................................................... 96
. Diagnosis Procedure ............................................ 127 .
Diagnosis Procedure ............................................. 96
.
MAGNET CLUTCH .......................................... 131
.
MEMORY FUNCTION DOES NOT OPERATE... 97 Component Function Check ................................ 131 .
Diagnosis Procedure ............................................. 97
. Diagnosis Procedure ............................................ 131
.
PRECAUTION ............................................ 98
. POWER SUPPLY AND GROUND CIRCUIT
FOR FRONT AIR CONTROL .......................... 135
.
PRECAUTIONS ................................................ 98
. Description ........................................................... 135
.
Supplemental Restraint System (SRS) "AIR BAG"
Component Function Check ................................ 135 .
and "SEAT BELT PRE-TENSIONER" ................... 98 .
Diagnosis Procedure ............................................ 135 .
Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect ................................. 98
. ECU DIAGNOSIS ...................................... 137
Working with HFC-134a (R-134a) ......................... 98 .
Precaution for Service Equipment ......................... 99
. AIR CONDITIONER CONTROL ...................... 137
.
MANUAL AIR CONDITIONER Reference Value .................................................. 137 .
Wiring Diagram - Air Conditioner Control (Manual)
BASIC INSPECTION ................................. 101
. - Coupe ................................................................ 139
.
Wiring Diagram - Air Conditioner Control (Manual)
DIAGNOSIS AND REPAIR WORKFLOW ...... 101
. - Sedan ................................................................ 147
.
Work Flow .............................................................101
.
SYMPTOM DIAGNOSIS ........................... 155
INSPECTION AND ADJUSTMENT ................ 102
.
Description & Conditions ......................................102
. AIR CONDITIONER CONTROL ...................... 155
.
Operational Check ................................................102
. Symptom Matrix Chart ........................................ 155
.
FUNCTION DIAGNOSIS ........................... 104
. INSUFFICIENT COOLING ............................... 156
.
Component Function Check ................................ 156 .
FUNCTION INFORMATION ........................... 104
. Diagnostic Work Flow .......................................... 157
.
Component Part Location .....................................104
. Performance Chart ............................................... 159
.
Component's Role ................................................106
. Trouble Diagnosis For Abnormal Pressure .......... 160 .
Revision: July 2008 HAC-2 2009 Altima
INSUFFICIENT HEATING ............................... 164
. PRECAUTIONS ............................................... 168
Component Function Check ................................. 164
. Supplemental Restraint System (SRS) "AIR BAG" A
and "SEAT BELT PRE-TENSIONER" .................. 168 .
NOISE .............................................................. 166
. Precaution Necessary for Steering Wheel Rota-
Component Function Check ................................. 166
. tion after Battery Disconnect ................................ 168
. B
Working with HFC-134a (R-134a) ........................ 168 .
PRECAUTION ........................................... 168
. Precaution for Service Equipment ........................ 169
.
C
D
E
F
G
H
HAC
J
K
L
M
N
O
P
Revision: July 2008 HAC-3 2009 Altima
DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION > [AUTOMATIC AIR CONDITIONER]
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow INFOID:0000000004498185
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, "Description and Conditions".
>> GO TO 3
3.GO TO APPROPRIATE TROUBLE DIAGNOSIS
Go to appropriate trouble diagnosis. Refer to HAC-83, "Symptom Matrix Chart" 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
Revision: July 2008 HAC-4 2009 Altima
INSPECTION AND ADJUSTMENT
< BASIC INSPECTION > [AUTOMATIC AIR CONDITIONER]
INSPECTION AND ADJUSTMENT
A
Description and Conditions INFOID:0000000004498186
DESCRIPTION B
The purpose of the operational check is to confirm that the system operates properly.
CONDITIONS:
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