Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Altima 2006-2009 Approved TB Nissan Altima 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 MODE DOOR MOTOR ...................................... 32 F
Description ..............................................................32
.
BASIC INSPECTION ................................... 4
. Diagnosis Procedure ..............................................33 .
G
DIAGNOSIS AND REPAIR WORKFLOW ......... 4
. AIR MIX DOOR MOTOR ................................... 35
Work Flow ................................................................ 4
. Description ..............................................................35
.
Diagnosis Procedure ..............................................36 .
INSPECTION AND ADJUSTMENT .................... 5
. H
Description and Conditions ...................................... 5
. INTAKE DOOR MOTOR ................................... 38
Inspection Procedure ............................................... 5
. Description ..............................................................38
.
Auxiliary Mechanism Trimmers ................................ 6
. Diagnosis Procedure ..............................................39 . HAC
FUNCTION DIAGNOSIS .............................. 9
. BLOWER MOTOR ............................................ 41
Description ..............................................................41
.
FUNCTION INFORMATION ............................... 9
. Component Function Check ...................................42 . J
Component Part Location ........................................ 9
. Diagnosis Procedure ..............................................43 .
Component's Role .................................................. 11
.
MAGNET CLUTCH ........................................... 47 K
REFRIGERATION SYSTEM .............................13
. Description ..............................................................47
.
Refrigerant Cycle ................................................... 13
. Component Function Check ...................................47 .
Refrigerant System Protection ............................... 13 . Diagnosis Procedure ..............................................48 .
L
AUTOMATIC AIR CONDITIONER SYSTEM ....14 AMBIENT SENSOR .......................................... 51
System Diagram ..................................................... 14
. Description ..............................................................51
.
System Description ................................................ 14
. Diagnosis Procedure ..............................................51 . M
Component Part Location ...................................... 20
. Component Inspection & Special Repair Require-
Component Description .......................................... 20
. ment ........................................................................52
.
CAN COMMUNICATION SYSTEM ...................21
. IN-VEHICLE SENSOR ...................................... 54 N
System Description ................................................ 21
. Component Description ..........................................54 .
Diagnosis Procedure ..............................................54 .
DIAGNOSIS SYSTEM (ECM) ............................22
.
Component Inspection & Special Repair Require- O
CONSULT-III Function ........................................... 22
.
ment ........................................................................56
.
SELF-DIAGNOSIS FUNCTION .........................23
.
SUNLOAD SENSOR ......................................... 57
Diagnosis Description ............................................ 23
. P
Description ..............................................................57
.
Auxiliary Mechanism Trimmers .............................. 28.
Diagnosis Procedure ..............................................57 .
COMPONENT DIAGNOSIS ........................ 29
. Component Inspection & Special Repair Require-
ment ........................................................................58
.
LAN SYSTEM CIRCUIT ....................................29
.
Description ............................................................. 29
. INTAKE SENSOR ............................................. 60
Diagnosis Procedure .............................................. 29. Description ..............................................................60
.
Revision: July 2007 HAC-1 2008 Altima
Component Function Check .................................. 60. INSPECTION AND ADJUSTMENT ................. 102
.
Diagnosis Procedure ............................................. 60
. Description & Conditions ...................................... 102
.
Inspection Procedure ........................................... 102
.
POWER SUPPLY AND GROUND CIRCUIT
FOR FRONT AIR CONTROL ........................... 62
. FUNCTION DIAGNOSIS ........................... 104
Description ............................................................. 62
.
Component Function Check .................................. 62 . FUNCTION INFORMATION ............................ 104
.
Diagnosis Procedure ............................................. 62 . Component Part Location .................................... 104
.
Component's Role ............................................... 106
.
ECU DIAGNOSIS ....................................... 64
.
AIR CONDITIONER CONTROL ...................... 107
.
AIR CONDITIONER CONTROL ....................... 64
. System Diagram .................................................. 107
.
Reference Value .................................................... 64. System Description .............................................. 107
.
Wiring Diagram - Air Conditioner Control (Auto) - Component Part Location .................................... 113.
Coupe .................................................................... 66
. Component Description ....................................... 113
.
Wiring Diagram - Air Conditioner Control (Auto) -
Sedan .................................................................... 75
. CAN COMMUNICATION SYSTEM ................. 114
.
System Description .............................................. 114
.
SYMPTOM DIAGNOSIS ............................ 83
.
DIAGNOSIS SYSTEM (ECM) .......................... 115
.
AIR CONDITIONER CONTROL ....................... 83
. CONSULT-III Function ......................................... 115
.
Symptom Matrix Chart ......................................... 83
.
COMPONENT DIAGNOSIS ...................... 116
INSUFFICIENT COOLING ................................ 84
.
Description ............................................................. 84
. LAN SYSTEM CIRCUIT .................................. 116
.
Component Function Check .................................. 84 . Description ........................................................... 116
.
Diagnostic Work Sheet .......................................... 85 . Diagnosis Procedure ............................................ 116 .
Inspection Procedure ............................................. 88 .
MODE DOOR MOTOR .................................... 119
.
INSUFFICIENT HEATING ................................ 92
. Description ........................................................... 119
.
Description ............................................................. 92
. Diagnosis Procedure ............................................ 120 .
Component Function Check .................................. 92 .
AIR MIX DOOR MOTOR ................................. 122
.
NOISE ............................................................... 94
. Description ........................................................... 122
.
Description ............................................................. 94
. Diagnosis Procedure ............................................ 123 .
Component Function Check .................................. 94 .
INTAKE DOOR MOTOR .................................. 125
.
SELF-DIAGNOSIS CANNOT BE PER- Description ........................................................... 125
.
FORMED ........................................................... 96
. Diagnosis Procedure ............................................ 125 .
Description ............................................................. 96
. BLOWER MOTOR ........................................... 127
.
Diagnosis Procedure ............................................. 96 . Description ........................................................... 127
.
MEMORY FUNCTION DOES NOT OPERATE... 97 Component Function Check ................................ 127 .
Description ............................................................. 97
. Diagnosis Procedure ............................................ 128 .
Diagnosis Procedure ............................................. 97 . MAGNET CLUTCH .......................................... 132
.
PRECAUTION ............................................ 98
. Component Function Check ................................ 132 .
Diagnosis Procedure ............................................ 132
.
PRECAUTIONS ................................................ 98
.
Supplemental Restraint System (SRS) "AIR BAG"
POWER SUPPLY AND GROUND CIRCUIT
and "SEAT BELT PRE-TENSIONER" ................... 98 . FOR FRONT AIR CONTROL .......................... 136
.
Precaution Necessary for Steering Wheel Rota- Description ........................................................... 136
.
tion after Battery Disconnect ................................. 98
. Component Function Check ................................ 136 .
Working with HFC-134a (R-134a) ......................... 98 . Diagnosis Procedure ............................................ 136 .
Precaution for Service Equipment ......................... 99
.
ECU DIAGNOSIS ...................................... 138
MANUAL AIR CONDITIONER
AIR CONDITIONER CONTROL ...................... 138
.
BASIC INSPECTION ................................. 101
. Reference Value .................................................. 138 .
Wiring Diagram - Air Conditioner Control (Manual)
DIAGNOSIS AND REPAIR WORKFLOW ...... 101
.
- Coupe ................................................................ 140
.
Work Flow .............................................................101
.
Revision: July 2007 HAC-2 2008 Altima
Wiring Diagram - Air Conditioner Control (Manual) Description ............................................................ 169
.
- Sedan ................................................................. 148
. Component Function Check ................................. 169 . A
Wiring Diagram - Heater Control - Sedan Only .... 156 .
Wiring Diagram - Heater Control - Sedan ............ 159 . NOISE .............................................................. 171
Description ............................................................ 171
.
SYMPTOM DIAGNOSIS ........................... 160
. Component Function Check ................................. 171 . B
AIR CONDITIONER CONTROL ...................... 160
. PRECAUTION ........................................... 173
.
Symptom Matrix Chart ........................................ 160
. C
PRECAUTIONS ............................................... 173
INSUFFICIENT COOLING .............................. 161
. Supplemental Restraint System (SRS) "AIR BAG"
Description ........................................................... 161
. and "SEAT BELT PRE-TENSIONER" .................. 173 .
Component Function Check ................................. 161 . Precaution Necessary for Steering Wheel Rota- D
Diagnostic Work Sheet ......................................... 162 . tion after Battery Disconnect ................................ 173
.
Inspection Procedure ........................................... 165 . Working with HFC-134a (R-134a) ........................ 173 .
Precaution for Service Equipment ........................ 174
. E
INSUFFICIENT HEATING ............................... 169
.
F
G
H
HAC
J
K
L
M
N
O
P
Revision: July 2007 HAC-3 2008 Altima
DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION > [AUTOMATIC AIR CONDITIONER]
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow INFOID:0000000001345238
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 >> CHECK OUT
NO >> GO TO 3
Revision: July 2007 HAC-4 2008 Altima
INSPECTION AND ADJUSTMENT
< BASIC INSPECTION > [AUTOMATIC AIR CONDITIONER]
INSPECTION AND ADJUSTMENT
A
Description and Conditions INFOID:0000000001345239
DESCRIPTION B
The purpose of the operational check is to confirm that the system operates properly.
CONDITIONS:
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