Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Armada 2004-2009 Approved Nissan Armada 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 COMPONENT DIAGNOSIS ........................ 24
. F
BASIC INSPECTION ................................... 3
. MODE DOOR MOTOR ...................................... 24
System Description .................................................24 . G
DIAGNOSIS AND REPAIR WORKFLOW ......... 3
. Mode Door Motor (Front) Component Function
How to Perform Trouble Diagnosis For Quick And Check .....................................................................25
.
Accurate Repair ....................................................... 3
. Mode Door Motor (Front) Diagnosis Procedure .....26 .
H
INSPECTION AND ADJUSTMENT .................... 4
. AIR MIX DOOR MOTOR ................................... 30
Operational Check (Front) ........................................ 4
. System Description .................................................30 .
Operational Check (Rear) ........................................ 5
. Air Mix Door Motor Component Function Check ....31 HAC
Air Mix Door Motor (Driver) Diagnosis Procedure....32
FUNCTION DIAGNOSIS .............................. 7
. Air Mix Door Motor (Passenger) Diagnosis Proce-
FUNCTION INFORMATION ............................... 7
. dure ........................................................................35
.
J
Component Part Location ........................................ 7
. INTAKE DOOR MOTOR ................................... 40
Symptom Table ........................................................ 9
. System Description .................................................40
.
REFRIGERATION SYSTEM .............................11
. Intake Door Motor Component Function Check .....41 . K
Refrigerant Cycle ................................................... 11
. Intake Door Motor Diagnosis Procedure ................42 .
Refrigerant System Protection ............................... 11 . DEFROSTER DOOR MOTOR CIRCUIT ........... 44
L
AUTOMATIC AIR CONDITIONER SYSTEM ....12 System Description .................................................44
.
Defroster Door Motor Component Function Check
Control System Diagram ........................................ 12
.
....45
Control System Description .................................... 12
.
Defroster Door Motor Diagnosis Procedure ...........45 . M
Discharge Air Flow (Front) ..................................... 15
.
Discharge Air Flow (Rear) ...................................... 15
. BLOWER MOTOR CONTROL SYSTEM .......... 49
Switches And Their Control Function (Front) ......... 17 . System Description .................................................49
.
Switches And Their Control Function (Rear) .......... 18 . N
Front Blower Motor Component Function Check ....50
CAN COMMUNICATION SYSTEM ...................19
. Front Blower Motor Diagnosis Procedure ...............51 .
Front Blower Motor Component Inspection ............54 .
System Description ................................................ 19
. O
Rear Blower Motor Description ...............................55 .
DIAGNOSIS SYSTEM (HVAC) .........................20
. Rear Blower motor Component Function Check ....56
CONSULT-III Function (HVAC) .............................. 20
. Rear Air Control (Front) Diagnosis Procedure #1....57
Rear Air Control (Rear) Diagnosis Procedure #2 ....58 P
DIAGNOSIS SYSTEM (BCM) ...........................21
. Rear Blower Motor Component Inspection .............59 .
CONSULT-III Function (BCM) ................................ 21
.
REAR AIR CONTROL SYSTEM ....................... 61
SELF-DIAGNOSIS FUNCTION .........................22
. Rear Air Control System Description ......................61
.
A/C Auto Amp. Self-Diagnosis ............................... 22
. Rear Air Control Component Function Check ........61 .
A/C and AV Switch Assembly Self-Diagnosis ........ 22 . Air Mix Door Motor (Rear) Diagnosis Procedure ....62
A/C System Self-Diagnosis Code Chart ................. 23
. Mode Door Motor (Rear) Diagnosis Procedure ......66 .
Revision: July 2007 HAC-1 2008 Armada
MAGNET CLUTCH ........................................... 71
. ECU DIAGNOSIS ....................................... 90
System Description ................................................ 71
.
Magnet Clutch Component Function Check .......... 71 . AIR CONDITIONER CONTROL ....................... 90
.
Magnet Clutch Diagnosis Procedure ..................... 72 . A/C Auto Amp. Terminals Reference Values ......... 90 .
Wiring Diagram ...................................................... 92
.
WATER VALVE CIRCUIT ................................. 76
.
Description ............................................................. 76
. SYMPTOM DIAGNOSIS ........................... 108
Water Valve Diagnosis Procedure ......................... 76 .
AIR CONDITIONER CONTROL ...................... 108
.
AMBIENT SENSOR .......................................... 78
. Symptom Matrix Chart ........................................ 108
.
Component Description ......................................... 78
.
Ambient Sensor Diagnosis Procedure ................... 78 . INSUFFICIENT COOLING ............................... 109
.
Ambient Sensor Component Inspection ................ 79 . Component Function Check ................................ 109 .
Performance Test Diagnoses .............................. 110 .
IN-VEHICLE SENSOR ...................................... 81
. Performance Chart ............................................... 112
.
Component Description ......................................... 81
. Test Reading ........................................................ 113
.
In-Vehicle Sensor Diagnosis Procedure ................ 81 . Trouble Diagnoses for Unusual Pressure ............ 114 .
In-Vehicle Sensor Component Inspection ............. 83 .
INSUFFICIENT HEATING ............................... 117
.
OPTICAL SENSOR .......................................... 84
. Component Function Check ................................ 117
.
Component Description ......................................... 84
.
Optical Sensor Diagnosis Procedure ..................... 84 . NOISE .............................................................. 119
.
Component Function Check ................................ 119
.
INTAKE SENSOR ............................................. 86
.
System Description ................................................ 86
. MEMORY FUNCTION DOES NOT OPERATE.. 121
Intake Sensor Diagnosis Procedure ...................... 86 . Memory Function Check ...................................... 121
.
Intake Sensor Component Inspection ................... 87 .
PRECAUTION ........................................... 122
POWER SUPPLY AND GROUND CIRCUIT
PRECAUTIONS ............................................... 122
.
FOR CONTROLLER ......................................... 88
. Supplemental Restraint System (SRS) "AIR BAG"
Component Description ......................................... 88 .
and "SEAT BELT PRE-TENSIONER" ................. 122 .
A/C Auto Amp. Component Function Check ......... 88 .
Working with HFC-134a (R-134a) ........................ 122
.
A/C Auto Amp Power and Ground Diagnosis Pro-
Precaution for Service Equipment ....................... 123
.
cedure .................................................................... 89
.
Revision: July 2007 HAC-2 2008 Armada
DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION > [AUTOMATIC AIR CONDITIONER]
BASIC INSPECTION A
DIAGNOSIS AND REPAIR WORKFLOW
How to Perform Trouble Diagnosis For Quick And Accurate Repair INFOID:0000000001277492
B
WORK 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.CHECK FOR SERVICE BULLETINS E
Check for any service bulletins.
>> GO TO 3. F
3.VERIFY THE SYMPTOM WITH OPERATIONAL CHECK
Verify the symptom with operational check. Refer to HAC-4, "Operational Check (Front)". G
Can a symptom be duplicated?
YES >> GO TO 4
NO >> GO TO 5 H
4.GO TO APPROPRIATE TROUBLE DIAGNOSIS
Go to appropriate trouble diagnosis. Refer to HAC-108, "Symptom Matrix Chart".
HAC
Can a symptom be duplicated?
>> GO TO 5.
5.PERFORM THE A/C AUTO AMP SELF-DIAGNOSIS J
Perform A/C auto amp. self-diagnosis. Refer to HAC-22, "A/C Auto Amp. Self-Diagnosis".
K
>> If any diagnostic trouble codes set. Refer to HAC-23, "A/C System Self-Diagnosis Code Chart".
>> Confirm the repair by performing operational check. Refer to HAC-4, "Operational Check (Front)".
L
M
N
O
P
Revision: July 2007 HAC-3 2008 Armada
INSPECTION AND ADJUSTMENT
< BASIC INSPECTION > [AUTOMATIC AIR CONDITIONER]
INSPECTION AND ADJUSTMENT
Operational Check (Front) INFOID:0000000001277704
The purpose of the operational check is to confirm that the system operates properly.
Conditions : Engine running and at normal operating temperature
CHECKING MEMORY FUNCTION
1. Set the temperature to 32◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo