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HEATER &
AIR CONDITIONER
SECTION HA
CONTENTS
PRECAUTIONS ...............................................................2 Intake Door ................................................................43
Supplemental Restraint System (SRS) AIR Mode Door .................................................................47
BAG and SEAT BELT PRE-TENSIONER...............2 Air Mix Door...............................................................49
Precautions for Working with HFC-134a (R-134a) .....2 Max Hot Door (For Scandinavia and Cold Spec
General Refrigerant Precautions .................................2 Models) ......................................................................51
Precautions for Refrigerant Connection ......................3 Blower Motor..............................................................55
Precautions for Servicing Compressor........................5 Magnet Clutch............................................................62
Precautions for Service Equipment .............................6 Insufficient Cooling ....................................................75
Wiring Diagrams and Trouble Diagnosis.....................8 Insufficient Heating ....................................................83
PREPARATION ...............................................................9 Noise..........................................................................84
Special Service Tools ..................................................9 SERVICE PROCEDURE................................................85
HFC-134a (R-134a) Service Tools and HFC-134a (R-134a) Service Procedure ....................85
Equipment..................................................................10 Maintenance of Lubricant Quantity in
DESCRIPTION ...............................................................12 Compressor ...............................................................87
Refrigeration System .................................................12 Compressor ...............................................................90
CSV613 Variable Displacement Compressor............13 Compressor Clutch - CSV613 (CALSONIC
Component Layout ....................................................17 make) .........................................................................92
Control Operation ......................................................18 Heater & Cooling Unit (Heater Core) ........................95
Discharge Air Flow.....................................................19 A/C Evaporator ..........................................................96
System Description....................................................20 Blower Unit ................................................................97
TROUBLE DIAGNOSES................................................21 Refrigerant Lines .......................................................98
Component Location..................................................21 Belt...........................................................................102
Wiring Diagram - Heater............................................23 Idle Air Control Valve (IACV) - Auxiliary Air
Circuit Diagram - Air Conditioner...............................26 Control (AAC) Valve ................................................103
Wiring Diagram - A/C, M - .........................................27 Ventilation Air Filter..................................................103
How to Perform Trouble Diagnoses for Quick SERVICE DATA AND SPECIFICATIONS (SDS) .......104
and Accurate Repair ..................................................40 Manual .....................................................................104
Operational Check .....................................................41
PRECAUTIONS
Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
Supplemental Restraint System (SRS) "AIR
BAG" and "SEAT BELT PRE-TENSIONER" NLHA0190
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 for certain types of
collision. The SRS system composition which is available to NISSAN MODEL V10 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 the RS section of 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) NLHA0113
WARNING:
+ 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 Precautions NLHA0114
WARNING:
+ 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.
HA-2
PRECAUTIONS
General Refrigerant Precautions (Cont'd)
+ Do not store or heat refrigerant containers above 52◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo