system NISSAN TERRANO 2004 Service Repair Manual

Removal and Installation
CAUTION:
IDisconnect ground terminal from battery in advance.
I Disconnect air bag system line in advance.
I Never tamper with or force air bag lid open, as this may adversely affect air bag performance.
I Be careful not to scratch pad and other parts.
INSTRUMENT PANEL ASSEMBLY
BT-16
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Heated Seat
HFor Wiring Diagram, refer to EL-151, ªHEATED SEATº for details.
Active Head Restraint
The active head restraint system is designed so that the headrest
instantaneously moves towards the front upper direction by utiliz-
ing the force at the seatback during a rear-end collision.
As a result, the occupant's head is protected from being
overextended, reducing the chance for neck injury as much as
possible.
Seat with active head restraint have the labels shown in figures at
left.
OPERATION OUTLINE
When the seatback receives a sharp backward force during a rear-
end collision, the input plate moves with the link rotating center as
a pivot. The headrest will then move towards the front upper direc-
tion with the center of the sliding roller as a pivot.
As the backward force on the seatback is eliminated, spring tension
returns the headrest to its original position.
SBT014A
SBT888
FRONT SEAT
BT-36
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HEATER & AIR CONDITIONERSECTION
HA
CONTENTS
PRECAUTIONS ...............................................................2
Supplemental Restraint System (SRS) ²AIR
BAG² and²SEAT BELT PRE-TENSIONER² ...............2
Introduction ..................................................................2
Identification .................................................................3
Precautions for Working with HFC-134a (R-134a) .....4
General Refrigerant Precautions .................................4
Precautions for Refrigerant Connection ......................5
Precautions for Servicing Compressor ........................6
DESCRIPTION - Overall System ...................................7
Control Operation ........................................................7
Component Layout ......................................................8
Air Flow ........................................................................\
9
DESCRIPTION - Refrigeration System .......................10
Refrigeration Cycle ....................................................10
PREPARATION .............................................................. 11
Special Service Tools ................................................ 11
HFC-134a (R-134a) Service Tools and
Equipment ..................................................................12
Precautions for Service Equipment ...........................14
SERVICE PROCEDURES .............................................16
HFC-134a (R-134a) Service Procedure ....................16
Refrigerant Lines .......................................................18
Compressor Mounting ...............................................22
Belt Tension ...............................................................22
LUBRICATION OIL - Checking and Adjusting ...........23
Lubrication Oil ............................................................23 Maintenance of Oil Quantity in Compressor .............23
Checking and Adjusting .............................................23
COMPRESSOR - Model DKS-17CH (ZEXEL
make) ........................................................................\
.....25
Compressor Clutch ....................................................25
DIAGNOSES - Overall System ....................................28
How to Perform Trouble Diagnoses for Quick
and Accurate Repair ..................................................28
Operation Check ........................................................29
Performance Chart ....................................................31
Performance Test Diagnoses ....................................32
TROUBLE DIAGNOSES ...............................................37
Symptom Chart ..........................................................37
Preliminary Check......................................................38
Harness Layout for A/C System ................................40
Wiring Diagram - Heater............................................42
Wiring Diagram ..........................................................44
Main Power Supply and Ground Circuit Check ........52
Diagnostic Procedure 1 .............................................53
Diagnostic Procedure 2 .............................................55
Diagnostic Procedure 3 .............................................60
Electrical Components Inspection .............................61
Control Linkage Adjustment.......................................62
SERVICE DATA AND SPECIFICATIONS (SDS) ..........65
General Specifications ...............................................65
Inspection and Adjustment ........................................65
When you read wiring diagrams:
I Read GI section, ªHOW TO READ WIRING DIAGRAMSº.
I See EL section, ªPOWER SUPPLY ROUTINGº for power distribution circuit.
When you perform trouble diagnoses, read GI section, ªHOW TO FOLLOW FLOW CHART IN
TROUBLE DIAGNOSESº.
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Supplemental Restraint System (SRS) ªAIR
BAGº and ªSEAT BELT PRE-TENSIONERº
The Supplemental Restraint System such as ªAIR BAGº and ªSEAT BELT PRE-TENSIONERº used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of
collision. The SRS composition which is available to NISSAN MODEL R20 is as follows (The composition
varies according to the destination and optional equipment.):
IFor a frontal collision
The Supplemental Restraint System consists of driver air bag module (located in the center of the steer-
ing wheel), front passenger air bag module (located on the instrument panel on passenger side), front seat
belt pre-tensioners, a diagnosis sensor unit, warning lamp, wiring harness and spiral cable.
I For a side collision
The Supplemental Restraint System consists of front side air bag module (located in the outer side of front
seat), side air bag (satellite) sensor, diagnosis sensor unit (one of components of air bags for a frontal
collision), wiring harness, warning lamp (one of components of air bags for a frontal collision).
WARNING:
I 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 should be per-
formed by an authorized NISSAN dealer.
I Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system.
I 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 tape either just
before the harness connectors or for the complete harness are related to the SRS.
Introduction
To prevent the ozone layer from being destroyed, the HFC-134a (R-134a) refrigerant has replaced the previ-
ously used CFC-12 (R-12).
The new and previous service tools, refrigerant, lubricant, etc. are not interchangeable due to differences in
their physical properties and characteristics.
Always service the HFC-134a (R-134a) air conditioning system using the specified tools, lubricant and
refrigerant, observing the following precautions:
PRECAUTIONS
HA-2
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Precautions for Working with HFC-134a
(R-134a)
WARNING:I CFC-12 (R-12) refrigerant and HFC-134a (R-134a) refrigerant must never be mixed, even in the
smallest amounts, as they are incompatible with each other. If the refrigerants are mixed, com-
pressor failure is likely to occur.
I Use only specified lubrication oil for the HFC-134a (R-134a) A/C system and HFC-134a (R-134a)
components. If lubrication oil other than that specified is used, compressor failure is likely to
occur.
I The specified HFC-134a (R-134a) lubrication oil absorbs moisture from the atmosphere at a rapid
rate, therefore 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. Also, complete the connection of all refrigerant loop
components as quickly as possible to minimize the entry of moisture into the system.
c: Use the specified lubrication oil from a sealed container only. Containers must be re-sealed immediately after dispensing the lubrication oil. Lubrication oil in containers which are not
properly sealed will become moisture saturated, and such lubrication oil is no longer suitable
for use and should be properly disposed of.
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)
system. If accidental system discharge occurs, ventilate work area before resuming service.
Additional health and safety information may be obtained from refrigerant and lubricant
manufacturers.
e: Do not allow lubrication oil (Nissan A/C System Oil Type S or Type R) to come in contact with styrofoam parts. Damage may result.
General Refrigerant Precautions
WARNING:
I Do not release refrigerant into the air. Use approved recovery/recycling equipment to capture the
refrigerant every time an air conditioning system is discharged.
I Always wear eye and hand protection (goggles and gloves) when working with any refrigerant or
air conditioning system.
I Do not store or heat refrigerant containers above 52ÉC (125ÉF).
I Do not heat a refrigerant container with an open flame; if container warming is required, place the
bottom of the container in a warm pail of water.
I Do not drop, puncture, or incinerate refrigerant containers.
I Keep refrigerant away from open flames: poisonous gas will be produced if refrigerant burns.
I Refrigerant will displace oxygen, therefore be certain to work in well ventilated areas to prevent
suffocation.
I Do not introduce compressed air to any refrigerant container or refrigerant component.
PRECAUTIONS
HA-4
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Precautions for Refrigerant Connection
WARNING:
Make sure all refrigerant is discharged into the recycling equipment and the pressure in the system
is less than atmospheric. Then gradually loosen the discharge side hose fitting and remove it.
CAUTION:
When replacing or cleaning refrigerant cycle components, observe the following.
IDo not leave compressor on its side or upside down for more than 10 minutes, as compressor oil
will enter low pressure chamber.
I When connecting tubes, always use a torque wrench and a back-up wrench.
I After disconnecting tubes, plug all openings immediately to prevent entrance of dirt and moisture.
I When installing an air conditioner in the vehicle, the pipes must be connected at the final stage of
the operation. The seal caps of the pipes and other components must not be removed until their
removal is required for connection.
I To prevent the condensation of moisture inside A/C components, components stored in cool areas
should be allowed to warm to the working area temperature before removing the seal caps.
I Thoroughly remove moisture from the refrigeration system before charging the refrigerant.
I Always replace used O-rings.
I When connecting tube, apply lubrication oil to portions shown in illustration. Be careful not to
apply oil to threaded portion.
Lubrication oil name: NISSAN A/C System Oil Type S
Part number: KLH00-PAGS0
I O-ring must be closely attached to inflated portion of tube.
I After inserting tube into union until O-ring is no longer visible, tighten nut to specified torque.
I After connecting line, conduct leak test and make sure that there is no leakage from connections.
When the gas leaking point is found, disconnect that line and replace the O-ring. Then tighten
connections of seal seat to the specified torque.
SHA525D
PRECAUTIONS
HA-5
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Control Operation
FAN CONTROL DIAL
This DIAL turns the fan ON and OFF, and controls fan speed.
AIR CONTROL DIAL
This DIAL allows outlet air to flow.
TEMPERATURE CONTROL DIAL
This DIAL allows the temperature of the outlet air to be adjusted.
AIR RECIRCULATION SWITCH
OFF position:
Outside air is drawn into the passenger compartment.
ON position (Indicator light ON):
Interior air is recirculated inside the vehicle.
AIR CONDITIONER SWITCH
Start the engine, turn the fan control dial to the desired (1 to 4) position and press the air conditioner switch
to turn ON the air conditioner. The indicator light will come on when the air conditioner is ON. To stop the air
conditioner, push the switch again to return it to the original position.
The air conditioner cooling function operates only when the engine is running.
NHA331
DESCRIPTION Ð Overall System
HA-7
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Component Layout
NHA339
DESCRIPTION Ð Overall System
HA-8
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Air Flow
NHA332
DESCRIPTION Ð Overall System
HA-9
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Refrigeration Cycle
REFRIGERANT FLOW
The refrigerant flows in the standard pattern, that is, through the compressor, the condenser, the liquid tank,
through the evaporator, and back to the compressor.
The refrigerant evaporation through the evaporator coil is controlled by an externally equalized expansion
valve, located inside the evaporator case.
FREEZE PROTECTION
The compressor cycles on and off to maintain the evaporator temperature within a specified range. When the
evaporator coil temperature falls below a specified point, the thermo control amplifier interrupts the compres-
sor operation. When the evaporator coil temperature rises above the specification, the thermo control ampli-
fier allows compressor operation.
REFRIGERANT SYSTEM PROTECTION
Dual-pressure switch
The refrigerant system is protected against excessively high or low pressures by the dual-pressure switch,
located on the liquid tank. If the system pressure rises above, or falls below the specifications, the dual-pres-
sure switch opens to interrupt the compressor operation.
Pressure relief valve
The refrigerant system is also protected by a pressure relief valve, located in the rear head of the compres-
sor. When the pressure of refrigerant in the system increases to an unusual level [more than 3,700 kPa (37.0
bar, 37.7 kg/cm
2, 537 psi)], the release port on the pressure relief valve automatically opens and releases
refrigerant into the atmosphere.
RHA341I
DESCRIPTION Ð Refrigeration System
HA-10
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