1998 NISSAN PATROL belt

HEATER &
AIR CONDITIONER
SECTION
HA
CONTENTS
MANUAL AND AUTO
PRECAUTIONS AND PREPARATION............................1
Supplemental Restraint System (SRS) ``AIR
BAG'' and ``SEAT BELT PRE-TENSIONER'' ...............1
Precautions for Working with HFC-134a (R-134a) .....1
General Refrigerant Precautions .................................2
Precautions for Refrigerant Connection ......................2
Precautions for Servicing Compressor ........................6
Special Service Tools ..................................................6
HFC-134a (R-134a) Service Tools and
Equipment ....................................................................7
Precautions for Service Equipment .............................9
DESCRIPTION............................................................... 11
Refrigeration Cycle .................................................... 11
Component Layout ....................................................12
Discharge Air Flow.....................................................13
REAR HEATER
TROUBLE DIAGNOSES...............................................14
Wiring Diagram Ð R/HEAT Ð/LHD Models .............14
Wiring Diagram Ð R/HEAT Ð/RHD Models .............15
MANUAL
DESCRIPTION...............................................................16
System Description ....................................................16
Control Operation ......................................................16
TROUBLE DIAGNOSES...............................................17
Component Location..................................................17
Wiring Diagram Ð A/C, M Ð ....................................19
How to Perform Trouble Diagnoses for Quick
and Accurate Repair ..................................................21
Operational Check .....................................................22
Intake Door Motor ......................................................24
Blower Motor..............................................................28
Insufficient Cooling ....................................................32
Trouble Diagnoses for Abnormal Pressure ...............36
Insufficient Heating ....................................................39Air Outlet ....................................................................41
Magnet Clutch............................................................43
Noise ..........................................................................48
AUTO
DESCRIPTION...............................................................49
Introduction ................................................................49
Features .....................................................................49
Overview of Control System ......................................52
Control Operation ......................................................53
TROUBLE DIAGNOSES...............................................55
Component Location..................................................55
Circuit Diagram ..........................................................57
Wiring Diagram Ð A/C, A Ð .....................................58
Auto Amp. Terminals and Reference Value...............61
Self-diagnosis ............................................................63
How to Perform Trouble Diagnoses for Quick
and Accurate Repair ..................................................69
Operational Check .....................................................70
A/C System ................................................................73
Mode Door Motor.......................................................75
Air Mix Door Motor ....................................................79
Intake Door Motor ......................................................82
Blower Motor..............................................................86
Magnet Clutch............................................................92
Insufficient Cooling ....................................................98
Insufficient Heating ....................................................99
Noise ........................................................................100
Self-diagnosis ..........................................................101
Memory Function .....................................................102
Ambient Sensor .......................................................103
In-vehicle Sensor .....................................................105
Sunload Sensor .......................................................107
Intake Sensor........................................................... 110
HA

Supplemental Restraint System (SRS) ``AIR
BAG'' and ``SEAT BELT PRE-TENSIONER''
The Supplemental Restraint System such as ``AIR BAG'' and ``SEAT BELT PRE-TENSIONER'' used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger in a frontal collision.
The SRS system composition which is available to NISSAN MODEL Y61 is as follows (The composition var-
ies according to the destination.):
Driver air bag module (located in the center of the steering wheel), front passenger air bag module (located
on the instrument panel on passenger side), seat belt pre-tensioner, a diagnosis sensor unit, warning lamp,
wiring harness and spiral cable.
Information necessary to service the system safely is included in theRS sectionof this Service Manual.
WARNING:
+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 in¯ation, all maintenance must be performed
by an authorized NISSAN dealer.
+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 RS section.
+Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. Spiral cable and wiring harnesses covered with yellow insulation either just before
the harness connectors or for the complete harness are related to the SRS.
Precautions for Working with HFC-134a
(R-134a)
WARNING:
+CFC-12 (R-12) refrigerant and HFC-134a (R-134a) refrigerant are not compatible. These refriger-
ants must never be mixed, even in the smallest amounts. If the refrigerants are mixed, compres-
sor failure is likely to occur.
+Use only speci®ed lubricant for the HFC-134a (R-134a) A/C system and HFC-134a (R-134a) com-
ponents. If lubricant other than that speci®ed is used, compressor failure is likely to occur.
+The speci®ed HFC-134a (R-134a) lubricant rapidly absorbs moisture from the atmosphere. The
following handling precautions must be observed:
a: When removing refrigerant components from a vehicle, immediately cap (seal) the component
to minimize the entry of moisture from the atmosphere.
b: When installing refrigerant components to a vehicle, do not remove the caps (unseal) until
just before connecting the components. Connect all refrigerant loop components as quickly
as possible to minimize the entry of moisture into system.
c: Only use the speci®ed lubricant from a sealed container. Immediately reseal containers of
lubricant. Without proper sealing, lubricant will become moisture saturated and should not
be used.
d: Avoid breathing A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose
and throat. Use only approved recovery/recycling equipment to discharge HFC-134a (R-134a)
refrigerant. If accidental system discharge occurs, ventilate work area before resuming ser-
vice. Additional health and safety information may be obtained from refrigerant and lubricant
manufacturers.
e: Do not allow lubricant (Nissan A/C System Oil Type S) to come in contact with styrofoam
parts. Damage may result.
PRECAUTIONS AND PREPARATIONMANUAL AND AUTO
HA-1

General Speci®cations
COMPRESSOR
Model ZEXEL make DKS-17CH
Type Swash plate
Displacement cm
3(cu in)/rev. 168 (10.25)
Cylinder bore x stroke mm (in) 37.0 x 25.8 (1.457 x 1.016)
Direction of rotationClockwise
(Viewed from drive end)
Drive belt A Type
LUBRICANT
Model ZEXEL make DKS-17CH
Type KLH00-PAGS0
Capacity m!(lmp ¯ oz)
Total in system 300 (10.6)
Compressor (Service parts)
charging amount300 (10.6)
Inspection and Adjustment
REFRIGERANT
Front A/C
Type HFC-134a (R-134a)
Capacity kg (lb)0.75 - 0.85
(1.65 - 1.87)
ENGINE IDLING SPEED (When A/C is ON.)
+Refer to EC section.
BELT TENSION
+Refer to MA section (``Checking Drive Belts'',
``ENGINE MAINTENANCE'').
COMPRESSOR
Model DKS-17CH
Clutch disc-to-pulley clearance
mm (in)0.3 - 0.6
(0.012 - 0.024)
SERVICE DATA AND SPECIFICATIONS
(SDS)MANUAL AND AUTO
HA-126