Page 1969 of 2493
ENGINE COMPARTMENTNJBT0026S01MeasurementNJBT0026S0101
SBT008A
BODY (ALIGNMENT)
Alignment (Cont'd)
BT-75
Page 1970 of 2493
Measurement PointsNJBT0026S0102
SBT009A
BODY (ALIGNMENT)
Alignment (Cont'd)
BT-76
Page 1971 of 2493
UNDERBODYNJBT0026S02MeasurementNJBT0026S0201
SBT010AA
BODY (ALIGNMENT)
Alignment (Cont'd)
BT-77
Page 1972 of 2493
Measurement PointsNJBT0026S0202
SBT011AA
BODY (ALIGNMENT)
Alignment (Cont'd)
BT-78
Page 1973 of 2493

HEATER &
AIR CONDITIONER
SECTION
HA
CONTENTS
PRECAUTIONS...............................................................2
Supplemental Restraint System (SRS)²AIR
BAG²and²SEAT BELT PRE-TENSIONER²...............2
Precautions for Working with HFC-134a (R-134a) .....2
General Refrigerant Precautions .................................2
Precautions for Refrigerant Connection ......................3
Precautions for Servicing Compressor ........................5
Precautions for Service Equipment .............................6
Wiring Diagrams and Trouble Diagnosis .....................8
PREPARATION...............................................................9
Special Service Tools ..................................................9
HFC-134a (R-134a) Service Tools and
Equipment .................................................................. 11
DESCRIPTION...............................................................13
Refrigeration System .................................................13
CSV613 Variable Displacement Compressor............14
Component Layout ....................................................18
Control Operation ......................................................19
Discharge Air Flow.....................................................20
System Description ....................................................21
TROUBLE DIAGNOSES................................................22
Component Location..................................................22
Wiring Diagram - Heater............................................24
Circuit Diagram - Air Conditioner...............................26
Wiring Diagram - A/C, M - .........................................27
How to Perform Trouble Diagnoses for Quick
and Accurate Repair ..................................................39
Operational Check .....................................................40
Intake Door ................................................................42
Mode Door .................................................................46Air Mix Door ...............................................................48
Max Hot Door (For Scandinavia and Cold Spec
Models) ......................................................................50
Blower Motor..............................................................54
Magnet Clutch............................................................61
Insufficient Cooling ....................................................74
Insufficient Heating ....................................................82
Noise ..........................................................................83
SERVICE PROCEDURE................................................84
HFC-134a (R-134a) Service Procedure ....................84
Maintenance of Lubricant Quantity in
Compressor ...............................................................86
Compressor ...............................................................89
Compressor Clutch - CSV613 (CALSONIC
make) .........................................................................90
Heater & Cooling Unit (Heater Core) ........................94
A/C Evaporator ..........................................................94
Blower Unit ................................................................95
Refrigerant Lines .......................................................97
Belt ...........................................................................101
Idle Air Control Valve (IACV) - Auxiliary Air
Control (AAC) Valve ................................................102
Ventilation Air Filter ..................................................102
SERVICE DATA AND SPECIFICATIONS (SDS).......103
Compressor .............................................................103
Lubricant ..................................................................103
Refrigerant ...............................................................103
Engine Idling Speed (When A/C is On)...................103
Belt Tension .............................................................103
Page 1974 of 2493

Supplemental Restraint System (SRS) ªAIR
BAGº and ªSEAT BELT PRE-TENSIONERº
NJHA0190The 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 system composition which is available to NISSAN MODEL N16 is as follows (The compo-
sition varies according to the destination and optional equipment.):
+For 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.
+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).
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 inflation, all maintenance should be per-
formed 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 tape either just
before the harness connectors or for the complete harness are related to the SRS.
Precautions for Working with HFC-134a
(R-134a)
NJHA0113WARNING:
+CFC-12 (R-12) refrigerant and HFC-134a (R-134a) refrigerant are not compatible. These refrigerants
must never be mixed, even in the smallest amounts. If the refrigerants are mixed, compressor fail-
ure is likely to occur.
+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.
+The specified HFC-134a (R-134a) lubricant rapidly absorbs moisture from the atmosphere. The fol-
lowing 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 pos-
sible to minimize the entry of moisture into system.
c) Only use the specified lubricant from a sealed container. Immediately reseal containers of lubri-
cant. 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. Remove R-134a from the A/C system, using certified service equipment meeting
requirements of R-134a recycling equipment, or R-134a recovery equipment. 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 lubricant (Nissan A/C System Oil Type S) to come in contact with styrofoam parts.
Damage may result.
General Refrigerant PrecautionsNJHA0114WARNING:
+Do not release refrigerant into the air. Use approved recovery/recycling equipment to capture the
refrigerant every time an air conditioning system is discharged.
+Always wear eye and hand protection (goggles and gloves) when working with any refrigerant or
air conditioning system.
PRECAUTIONS
Supplemental Restraint System (SRS) ªAIR BAGº and ªSEAT BELT PRE-TENSIONERº
HA-2
Page 1975 of 2493

+Do not store or heat refrigerant containers above 52ÉC (125ÉF).
+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.
+Do not intentionally drop, puncture, or incinerate refrigerant containers.
+Keep refrigerant away from open flames: poisonous gas will be produced if refrigerant burns.
+Refrigerant will displace oxygen, therefore be certain to work in well ventilated areas to prevent
suffocation.
+Do not pressure test or leak test HFC-134a (R-134a) service equipment and/or vehicle air condi-
tioning systems with compressed air during repair. Some mixtures of air and R-134a have been
shown to be combustible at elevated pressures. These mixtures, if ignited, may cause injury or
property damage. Additional health and safety information may be obtained from refrigerant manu-
facturers.
Precautions for Refrigerant ConnectionNJHA0115A new type refrigerant connection has been introduced to all refrigerant lines except the following portion.
+Expansion valve to cooling unit
FEATURES OF NEW TYPE REFRIGERANT CONNECTIONNJHA0115S01+The O-ring has been relocated. It has also been provided with a groove for proper installation. This elimi-
nates the chance of the O-ring being caught in, or damaged by, the mating part. The sealing direction of
the O-ring is now set vertically in relation to the contacting surface of the mating part to improve sealing
characteristics.
+The reaction force of the O-ring will not occur in the direction that causes the joint to pull out, thereby
facilitating piping connections.
SHA815E
PRECAUTIONS
General Refrigerant Precautions (Cont'd)
HA-3
Page 1976 of 2493

O-RING AND REFRIGERANT CONNECTIONNJHA0115S02
NHA493
CAUTION:
The new and former refrigerant connections in some systems use different O-ring configurations. Do
not confuse O-rings since they are not interchangeable. If a wrong O-ring is installed, refrigerant will
leak at, or around, the connection.
O-Ring Part Numbers and SpecificationsNJHA0115S0201
SHA814E
Connection
typeO-ring
sizePart number D mm (in) W mm (in)
New 8 92471 N8210 6.8 (0.268) 1.85 (0.0728)
New
1292472 N8210 10.9 (0.429) 2.43 (0.0957)
Former 92475 71L00 11.0 (0.433) 2.40 (0.0945)
New
1692473 N8210 13.6 (0.535) 2.43 (0.0957)
Former 92475 72L00 14.3 (0.563) 2.30 (0.0906)
New 19 92474 N8210 16.5 (0.650) 2.43 (0.0957)
WARNING:
Make sure all refrigerant is discharged into the recycling equipment and the pressure in the system
is less than atmospheric pressure. Then gradually loosen the discharge side hose fitting and remove
it.
CAUTION:
When replacing or cleaning refrigerant cycle components, observe the following.
+When the compressor is removed, store it in the same position as it is when mounted on the car.
Failure to do so will cause lubricant to enter the low pressure chamber.
+When connecting tubes, always use a torque wrench and a back-up wrench.
+After disconnecting tubes, immediately plug all openings to prevent entry of dirt and moisture.
PRECAUTIONS
Precautions for Refrigerant Connection (Cont'd)
HA-4