Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Frontier 2003-2005 Approved Nissan Frontier 2004 MTC
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J AIR CONDITIONER
A
B
SECTION
MANUAL AIR CONDITIONER C
D
E
CONTENTS
PRECAUTIONS ......................................................... 3
. FAN CONTROL KNOB ....................................... 20 . F
Precautions for Supplemental Restraint System MODE CONTROL KNOB ................................... 20 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- TEMPERATURE CONTROL KNOB ................... 20 .
SIONER" ................................................................. 3
. RECIRCULATION (REC) SWITCH .................... 20 . G
Precautions for Working with HFC-134a (R-134a) 3 ..... AIR CONDITIONER SWITCH ............................ 20 .
Contaminated Refrigerant ....................................... 4 . REAR WINDOW DEFOGGER SWITCH (IF
General Refrigerant Precautions ............................. 4 . EQUIPPED) ........................................................ 20
.
H
Precautions for Leak Detection Dye ........................ 4 . Discharge Air Flow ................................................ 21
.
A/C Identification Label ........................................... 5
. TROUBLE DIAGNOSIS ........................................... 22 .
Precautions for Refrigerant Connection .................. 5 . How to Perform Trouble Diagnoses for Quick and
FEATURES OF NEW TYPE REFRIGERANT Accurate Repair ..................................................... 22
. I
CONNECTION ..................................................... 5. WORK FLOW ..................................................... 22 .
O-RING AND REFRIGERANT CONNECTION..... 6 SYMPTOM TABLE ............................................. 22 .
Precautions for Servicing Compressor .................... 8 . Component Location ............................................. 23 . MTC
Precautions for Service Equipment ......................... 8 . ENGINE COMPARTMENT ................................. 23 .
RECOVERY/RECYCLING EQUIPMENT ............. 8 . PASSENGER COMPARTMENT ........................ 26 .
ELECTRONIC LEAK DETECTOR ....................... 8 . Wiring Diagram -- Heater -- ................................. 27 .
K
VACUUM PUMP .................................................. 9 . Wiring Diagram -- A/C -- ...................................... 28 .
MANIFOLD GAUGE SET ..................................... 9 . Operational Check ................................................. 30
.
SERVICE HOSES ................................................ 9 . CONDITIONS: .................................................... 30.
SERVICE COUPLERS ....................................... 10 . PROCEDURE: ................................................... 30 . L
CHARGING CYLINDER ..................................... 10 . Mode Door ............................................................. 32
.
THERMOMETER AND HYGROMETER ............ 10 . TROUBLE DIAGNOSIS PROCEDURE FOR
Wiring Diagrams and Trouble Diagnosis ............... 10 . MODE DOOR ..................................................... 32 . M
PREPARATION .........................................................11
. MODE DOOR CONTROL LINKAGE ADJUST-
Special Service Tools .............................................11
. MENT ................................................................. 33
.
HFC-134a (R-134a) Service Tools and Equipment 12 ... Intake Door ............................................................ 34
.
Commercial Service Tool ...................................... 14 . TROUBLE DIAGNOSIS PROCEDURE FOR
REFRIGERATION SYSTEM .................................... 15 . INTAKE DOOR ................................................... 34 .
Refrigeration Cycle ................................................ 15
. INTAKE DOOR CIRCUIT ................................... 35 .
REFRIGERANT FLOW ...................................... 15 . CONTROL LINKAGE ADJUSTMENT ................ 36 .
FREEZE PROTECTION .................................... 15 . Blower Motor ......................................................... 37
.
REFRIGERANT SYSTEM PROTECTION ......... 15 . TROUBLE DIAGNOSIS PROCEDURE FOR
Component Layout ................................................ 16. BLOWER MOTOR ............................................. 37 .
LUBRICANT ............................................................ 17
. BLOWER MOTOR CIRCUIT .............................. 37 .
Maintenance of Lubricant Quantity in Compressor 17 ... ELECTRICAL COMPONENTS INSPECTION .... 41 .
LUBRICANT ....................................................... 17
. Magnet Clutch ....................................................... 42
.
CHECKING AND ADJUSTING .......................... 17 . TROUBLE DIAGNOSIS PROCEDURE FOR
AIR CONDITIONER CONTROL .............................. 20 . MAGNET CLUTCH ............................................ 42 .
Control Operation .................................................. 20
. MAGNET CLUTCH CIRCUIT ............................. 43 .
MTC-1
ELECTRICAL COMPONENTS INSPECTION .... 47 . Components ...........................................................66
.
Insufficient Cooling ................................................ 49. Removal and Installation for Compressor ..............67 .
TROUBLE DIAGNOSIS PROCEDURE FOR Removal and Installation for Compressor Clutch ...68
INSUFFICIENT COOLING ................................. 49 . REMOVAL ...........................................................69
.
PERFORMANCE TEST DIAGNOSES ............... 50 . INSPECTION AFTER REMOVAL .......................70 .
PERFROMANCE CHART .................................. 52 . INSTALLATION ...................................................70
.
TROUBLE DIAGNOSES FOR ABNORMAL BREAK-IN OPERATION .....................................71 .
PRESSURE ........................................................ 53 . Thermal Protector Inspection .................................72 .
Insufficient Heating ................................................ 57. Removal and Installation for Evaporator ................72 .
TROUBLE DIAGNOSIS PROCEDURE FOR REMOVAL ...........................................................72
.
INSUFFICIENT HEATING .................................. 57 . INSTALLATION ...................................................73
.
TEMPERATURE CONTROL LINKAGE Checking for Refrigerant Leaks .............................73 .
ADJUSTMENT ................................................... 58 . PRELIMINARY CHECK ......................................73 .
Noise ..................................................................... 59
. Fluorescent Dye Leak Detector .............................73 .
TROUBLE DIAGNOSIS PROCEDURE FOR PRECAUTIONS FOR FLUORESCENT DYE
NOISE ................................................................ 59
. LEAK DETECTION .............................................73 .
Intake Sensor ......................................................... 60
. CHECKING SYSTEM FOR LEAKS USING THE
COMPONENT DESCRIPTION ........................... 60 . FLUORESCENT LEAK DETECTOR ..................73 .
DIAGNOSTIC PROCEDURE ............................. 60 . DYE INJECTION .................................................73.
REMOVAL AND INSTALLATION ........................ 61 . Electronic Refrigerant Leak Detector .....................74 .
IN-CABIN MICROFILTER ........................................ 62 . PRECAUTIONS FOR HANDLING LEAK
Removal and Installation ....................................... 62 . DETECTOR ........................................................74
.
FUNCTION ......................................................... 62 . CHECKING PROCEDURE .................................75 .
REPLACEMENT TIMING ................................... 62 . SERVICE DATA AND SPECIFICATIONS (SDS) .....77 .
REPLACEMENT PROCEDURES ...................... 62 . General Specifications ...........................................77
.
HEATER CORE ........................................................ 63 . COMPRESSOR ..................................................77 .
Removal and Installation ....................................... 63 . LUBRICANT ........................................................77
.
REMOVAL .......................................................... 63 . REFRIGERANT ..................................................77 .
INSTALLATION ................................................... 63 . Inspection and Adjustment .....................................77 .
REFRIGERANT LINES ............................................ 64 . ENGINE IDLING SPEED (WHEN A/C IS ON) ....77 .
HFC-134a (R-134a) Service Procedure ................ 64 . BELT TENSION ..................................................77.
SETTING OF SERVICE TOOLS AND EQUIP- MAGNET CLUTCH .............................................77 .
MENT ................................................................. 64
.
MTC-2
PRECAUTIONS
PRECAUTIONS PFP:00001
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EJS001ZK
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along B
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 may include seat belt switch inputs and dual stage front air bag modules. If
equipped with dual stage front air bag modules, the SRS system uses the seat belt switches to determine the C
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 Manual.
D
The vehicle may be equipped with a passenger air bag deactivation switch. Because no rear seat exists where
a rear-facing child restraint can be placed, the switch is designed to turn off the passenger air bag so that a
rear-facing child restraint can be used in the front passenger seat. The switch is located in the center of the E
instrument panel, near the ashtray. When the switch is turned to the ON position, the passenger air bag is
enabled and could inflate for certain types of collision. When the switch is turned to the OFF position, the pas-
senger air bag is disabled and will not inflate. A passenger air bag OFF indicator on the instrument panel lights
up when the passenger air bag is switched OFF. The driver air bag always remains enabled and is not affected F
by the passenger air bag deactivation switch.
WARNING: G
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. H
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.
I
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.
MTC
q The vehicle may be equipped with a passenger air bag deactivation switch which can be operated
by the customer. When the passenger air bag is switched OFF, the passenger air bag is disabled
and will not inflate. When the passenger air bag is switched ON, the passenger air bag is enabled
and could inflate for certain types of collision. After SRS maintenance or repair, make sure the K
passenger air bag deactivation switch is in the same position (ON or OFF) as when the vehicle
arrived for service.
Precautions for Working with HFC-134a (R-134a) EJS001ZL
L
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 to MTC-4, "Contaminated Refrigerant" . To M
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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