Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Titan 2004-2009 Approved Nissan Titan 2005 MTC
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J AIR CONDITIONER
A
B
SECTION
MANUAL AIR CONDITIONER C
D
E
CONTENTS
PRECAUTIONS ......................................................... 4
. AIR CONDITIONER CONTROL .............................. 22 . F
Precautions for Supplemental Restraint System Description ............................................................. 22
.
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Operation ............................................................... 22
.
SIONER" ................................................................. 4
. AIR MIX DOOR CONTROL ................................ 22 . G
Precautions for Working with HFC-134a (R-134a).... 4 . BLOWER SPEED CONTROL ............................ 22 .
Contaminated Refrigerant ....................................... 4 . INTAKE DOORS CONTROL .............................. 22 .
General Refrigerant Precautions ............................. 5 . MODE DOOR CONTROL .................................. 22 .
H
Precautions for Leak Detection Dye ........................ 5 . DEFROSTER DOOR CONTROL ....................... 22 .
A/C Identification Label ........................................... 6
. MAGNET CLUTCH CONTROL .......................... 22 .
Precautions for Refrigerant Connection .................. 6 . SELF-DIAGNOSTIC SYSTEM ........................... 23 .
FEATURES OF NEW TYPE REFRIGERANT Description of Control System ............................... 24 . I
CONNECTION ..................................................... 6. Control Operation .................................................. 24
.
O-RING AND REFRIGERANT CONNECTION..... 7 TEMPERATURE CONTROL DIAL (TEMPERA-
Precautions for Servicing Compressor .................... 9 . TURE CONTROL) .............................................. 25 . MTC
Precautions for Service Equipment ......................... 9 . RECIRCULATION () SWITCH ............................ 25 .
RECOVERY/RECYCLING EQUIPMENT ............. 9 . REAR WINDOW DEFOGGER SWITCH ............ 25 .
ELECTRONIC LEAK DETECTOR ....................... 9 . OFF SWITCH (BLOWER SPEED SET TO 0) .... 25 .
K
VACUUM PUMP ................................................ 10 . A/C SWITCH ...................................................... 25.
MANIFOLD GAUGE SET ................................... 10 . MODE CONTROL DIAL ..................................... 25 .
SERVICE HOSES .............................................. 10 . FRONT BLOWER CONTROL DIAL ................... 25 .
SERVICE COUPLERS ........................................11 . Discharge Air Flow ................................................ 25. L
REFRIGERANT WEIGHT SCALE ......................11 . System Description ................................................ 26.
CHARGING CYLINDER ......................................11 . SWITCHES AND THEIR CONTROL FUNCTION 26 ...
Wiring Diagrams and Trouble Diagnosis ................11 . CAN Communication System Description ............. 27 . M
PREPARATION ........................................................ 12
. TROUBLE DIAGNOSIS ........................................... 28 .
Special Service Tools ............................................ 12
. CONSULT-II Function (HVAC) ............................... 28 .
HFC-134a (R-134a) Service Tools and Equipment.. 12 . CONSULT-II BASIC OPERATION ...................... 28 .
Commercial Service Tools ..................................... 15 . SELF-DIAGNOSIS ............................................. 29 .
REFRIGERATION SYSTEM .................................... 16 . DATA MONITOR ................................................ 29 .
Refrigerant Cycle .................................................. 16
. CONSULT-II Function (BCM) ................................ 31 .
REFRIGERANT FLOW ...................................... 16 . CONSULT-II BASIC OPERATION ...................... 31 .
Refrigerant System Protection .............................. 16 . DATA MONITOR ................................................ 32 .
REFRIGERANT PRESSURE SENSOR ............ 16 . How to Perform Trouble Diagnosis for Quick and
PRESSURE RELIEF VALVE ............................. 17 . Accurate Repair ..................................................... 33
.
Component Layout ................................................ 18. WORK FLOW ..................................................... 33 .
REFRIGERATION SYSTEM .............................. 18 . SYMPTOM TABLE ............................................. 33 .
LUBRICANT ............................................................ 20
. Component Parts and Harness Connector Location 34 ...
Maintenance of Lubricant Quantity in Compressor.. 20 . ENGINE COMPARTMENT ................................. 34 .
LUBRICANT ....................................................... 20
. FRONT PASSENGER COMPARTMENT ........... 35 .
CHECKING AND ADJUSTING .......................... 20 . Schematic .............................................................. 36
.
Revision: October 2004 MTC-1 2005 Titan
Wiring Diagram -- A/C -- ...................................... 37 . INSPECTION FLOW ...........................................80 .
Front Air Control Terminals and Reference Value... 43 PERFORMANCE TEST DIAGNOSES ...............81 .
PIN CONNECTOR TERMINAL LAYOUT ........... 43 . PERFORMANCE CHART ...................................83 .
TERMINALS AND REFERENCE VALUE FOR TROUBLE DIAGNOSES FOR UNUSUAL PRES-
FRONT AIR CONTROL ...................................... 43 . SURE ..................................................................84
.
A/C System Self-diagnosis Function (With NAVI Insufficient Heating ................................................87 .
Only) ...................................................................... 45
. INSPECTION FLOW ...........................................87 .
DESCRIPTION ................................................... 45 . Noise ......................................................................88
.
Operational Check ................................................. 47 . INSPECTION FLOW ...........................................88 .
CHECKING BLOWER ........................................ 47 . Self-diagnosis ........................................................89.
CHECKING DISCHARGE AIR ........................... 47 . INSPECTION FLOW ...........................................89 .
CHECKING RECIRCULATION ........................... 47 . Water Valve Circuit .................................................90 .
CHECKING TEMPERATURE DECREASE ........ 48 . COMPONENT DESCRIPTION ...........................90 .
CHECKING TEMPERATURE INCREASE ......... 48 . DIAGNOSTIC PROCEDURE FOR WATER
CHECK A/C SWITCH ......................................... 48 . VALVE .................................................................90
.
Power Supply and Ground Circuit for Front Air Con- COMPONENT INSPECTION ..............................92 .
trol .......................................................................... 49
. Intake Sensor Circuit ..............................................92 .
INSPECTION FLOW .......................................... 49 . COMPONENT DESCRIPTION ...........................92 .
COMPONENT DESCRIPTION ........................... 50 . DIAGNOSTICPROCEDUREFORINTAKESEN-
DIAGNOSTIC PROCEDURE FORA/C SYSTEM 50 ... SOR ....................................................................92
.
Mode Door Motor Circuit ....................................... 52 . COMPONENT INSPECTION ..............................94 .
INSPECTION FLOW .......................................... 52 . CONTROL UNIT .......................................................95 .
SYSTEM DESCRIPTION ................................... 53 . Removal and Installation ........................................95 .
COMPONENT DESCRIPTION ........................... 53 . REMOVAL ...........................................................95 .
DIAGNOSTIC PROCEDURE FOR MODE INSTALLATION ...................................................95 .
DOOR MOTOR .................................................. 53 . INTAKE SENSOR .....................................................96 .
Air Mix Door Motor Circuit ..................................... 56 . Removal and Installation ........................................96 .
INSPECTION FLOW .......................................... 56 . REMOVAL ...........................................................96 .
SYSTEM DESCRIPTION ................................... 57 . INSTALLATION ...................................................96 .
COMPONENT DESCRIPTION ........................... 57 . BLOWER MOTOR ....................................................97 .
DIAGNOSTIC PROCEDURE FOR AIR MIX Removal and Installation ........................................97 .
DOOR MOTOR (FRONT) ................................... 58 . REMOVAL ...........................................................97 .
Intake Door Motor Circuit ....................................... 60 . INSTALLATION ...................................................97 .
INSPECTION FLOW .......................................... 60 . IN-CABIN MICROFILTER .........................................98 .
SYSTEM DESCRIPTION ................................... 61 . Removal and Installation ........................................98 .
COMPONENT DESCRIPTION ........................... 61 . FUNCTION .........................................................98 .
DIAGNOSTIC PROCEDURE FOR INTAKE REPLACEMENT TIMING ...................................98 .
DOOR MOTOR .................................................. 62 . REPLACEMENT PROCEDURE .........................98 .
Defroster Door Motor Circuit .................................. 63 . HEATER & COOLING UNIT ASSEMBLY .............. 100 .
SYMPTOM: ......................................................... 63 . Removal and Installation ...................................... 100 .
INSPECTION FLOW .......................................... 63 . REMOVAL ......................................................... 100 .
SYSTEM DESCRIPTION ................................... 64 . INSTALLATION ................................................. 101 .
COMPONENT DESCRIPTION ........................... 64 . HEATER CORE ...................................................... 102 .
DIAGNOSTIC PROCEDURE FOR Removal and Installation ...................................... 102 .
DEFROSTER DOOR MOTOR ........................... 64 . REMOVAL ......................................................... 103 .
Front Blower Motor Circuit ..................................... 67 . INSTALLATION ................................................. 103 .
INSPECTION FLOW .......................................... 67 . DEFROSTER DOOR MOTOR ................................ 104 .
SYSTEM DESCRIPTION ................................... 68 . Removal and Installation ...................................... 104 .
COMPONENT DESCRIPTION ........................... 68 . REMOVAL ......................................................... 104 .
DIAGNOSTIC PROCEDURE FOR BLOWER INSTALLATION ................................................. 104 .
MOTOR .............................................................. 69 . INTAKE DOOR MOTOR ......................................... 105 .
COMPONENT INSPECTION ............................. 73 . Removal and Installation ...................................... 105 .
Magnet Clutch Circuit ............................................ 74 . REMOVAL ......................................................... 105 .
INSPECTION FLOW .......................................... 74 . INSTALLATION ................................................. 105 .
SYSTEM DESCRIPTION ................................... 75 . MODE DOOR MOTOR ........................................... 106 .
DIAGNOSTIC PROCEDURE FOR MAGNET Removal and Installation ...................................... 106 .
CLUTCH ............................................................. 75 . REMOVAL ......................................................... 106 .
COMPONENT INSPECTION ............................. 79 . INSTALLATION ................................................. 106 .
Insufficient Cooling ................................................ 80 .
Revision: October 2004 MTC-2 2005 Titan
AIR MIX DOOR MOTOR ........................................ 107 . INSTALLATION ................................................ 119 .
Removal and Installation ..................................... 107 . Removal and Installation for High-pressure Pipe . 120 A
REMOVAL ........................................................ 107 . REMOVAL ........................................................ 120 .
INSTALLATION ................................................ 107 . INSTALLATION ................................................ 120 .
VARIABLE BLOWER CONTROL ......................... 108 . Removal and Installation for Low-pressure Pipe . 120 B
Removal and Installation ..................................... 108 . REMOVAL ........................................................ 120 .
REMOVAL ........................................................ 108 . INSTALLATION ................................................ 120 .
INSTALLATION ................................................ 108 . Removal and Installation for Refrigerant Pressure
DUCTS AND GRILLES ......................................... 109 . Sensor ................................................................. 120
. C
Removal and Installation ..................................... 109 . REMOVAL ........................................................ 120 .
DEFROSTER NOZZLE .....................................110 . INSTALLATION ................................................ 120 .
RH AND LH SIDE DEMISTER DUCT ...............110 . Removal and Installation for Condenser ............. 120 . D
RH AND LH VENTILATOR DUCT .....................110 . REMOVAL ........................................................ 120 .
CENTER VENTILATOR DUCT ......................... 111 . INSTALLATION ................................................ 121 .
FLOOR DUCT ................................................... 111 . Removal and Installation for Evaporator ............. 122 . E
GRILLES ........................................................... 111
. REMOVAL ........................................................ 122 .
REFRIGERANT LINES ...........................................112 . INSTALLATION ................................................ 123 .
HFC-134a (R-134a) Service Procedure ...............112 . Removal and Installation for Expansion Valve ..... 123 .
SETTING OF SERVICE TOOLS AND EQUIP- REMOVAL ........................................................ 123 . F
MENT ................................................................112
. INSTALLATION ................................................ 123 .
Components .........................................................114 . Checking for Refrigerant Leaks ........................... 123 .
Removal and Installation for Compressor ............115 . Checking System for Leaks Using the Fluorescent G
REMOVAL .........................................................115 . Dye Leak Detector ............................................... 123 .
INSTALLATION .................................................116 . Dye Injection ........................................................ 124
.
Removal and Installation for Compressor Clutch ..116 Electronic Refrigerant Leak Detector ................... 124 . H
REMOVAL .........................................................116 . PRECAUTIONS FOR HANDLING LEAK
INSPECTION ....................................................117 . DETECTOR ...................................................... 124 .
INSTALLATION .................................................118 . CHECKING PROCEDURE .............................. 125 .
I
BREAK-IN OPERATION ...................................119 . SERVICE DATA AND SPECIFICATIONS (SDS) ... 127 .
Removal and Installation for Low-pressure Flexible Service Data and Specifications (SDS) ............... 127 .
Hose .....................................................................119
. COMPRESSOR ............................................... 127 .
REMOVAL .........................................................119 . LUBRICANT ..................................................... 127 . MTC
INSTALLATION .................................................119 . REFRIGERANT ................................................ 127 .
Removal andInstallation for High-pressure Flexible ENGINE IDLING SPEED ................................. 127 .
Hose .....................................................................119
. BELT TENSION ................................................ 127 . K
REMOVAL .........................................................119 .
L
M
Revision: October 2004 MTC-3 2005 Titan
PRECAUTIONS
PRECAUTIONS PFP:00001
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EJS0031M
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:
q To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.
q Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
q Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for Working with HFC-134a (R-134a) EJS0031N
WARNING:
q CFC-12 (R-12) refrigerant and HFC-134a (R-134a) refrigerant are not compatible. If the refrigerants
are mixed compressor failure is likely to occur. Refer MTC-4, "Contaminated Refrigerant" . To
determine the purity of HFC-134a (R-134a) in the vehicle and recovery tank, use Refrigerant
Recovery/Recycling Recharging equipment and Refrigerant Identifier.
q Use only specified lubricant for the HFC-134a (R-134a) A/C system and HFC-134a (R-134a) compo-
nents. If lubricant other than that specified is used, compressor failure is likely to occur.
q The specified HFC-134a (R-134a) lubricant rapidly absorbs moisture from the atmosphere. The fol-
lowing handling precautions must be observed:
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