The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
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. Information necessary to service the system safely is included in the SRS and SB 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 must be per-
formed by an authorized NISSAN/INFINITI 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 SRS section.

●

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.

Precautions for Working with HFC-134a (R-134a)

EJS002ZI

WARNING:

●

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 malfunction 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:

–

When removing refrigerant components from a vehicle, immediately cap (seal) the component to
minimize the entry of moisture from the atmosphere.

–

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 possi-
ble to minimize the entry of moisture into system.

–

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.

–

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) refriger-
ant. If accidental system discharge occurs, ventilate work area before resuming service. Addi-
tional

health

and

safety

information

may

obtained

from

refrigerant and

lubricant

manufacturers.

–

Do not allow lubricant (Nissan A/C System Oil Type S) to come in contact with styrofoam parts.
Damage may result.

General Refrigerant Precautions

EJS002ZJ

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.

●

Do not store or heat refrigerant containers above 52

C (125

F).

●

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 HFC-134a (R-134a)
have been shown to be combustible at elevated pressures. These mixtures, if ignited, may cause

PRECAUTIONS

ATC-5

ATC

injury or property damage. Additional health and safety information may be obtained from refriger-
ant manufacturers.

Lubricant Precautions

EJS002ZK

●

Use only specified lubricant for the HFC-134a (R-134a) A/C system and HFC-134a (R-134a) components.
If lubricant other than that specified is used, compressor malfunction is likely to occur.

●

The specified HFC-134a (R-134a) lubricant rapidly absorbs moisture from the atmosphere. The following
handling precautions must be observed:

–

When removing refrigerant components from a vehicle, immediately cap (seal) the component to minimize
the entry of moisture from the atmosphere.

–

When installing refrigerant components to a vehicle, do not remove the caps (unseal) until just before con-
necting the components. Connect all refrigerant loop components as quickly as possible to minimize the
entry of moisture into system.

–

Only use the specified lubricant from a sealed container. Immediately reseal containers of lubricant. With-
out proper sealing, lubricant will become moisture saturated and should not be used.

●

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 acciden-
tal system discharge occurs, ventilate work area before resuming service. Additional health and safety
information may be obtained from refrigerant and lubricant manufacturers.

●

Do not allow lubricant (Nissan A/C System Oil Type S) to come in contact with styrofoam parts. Damage
may result.

Precautions for Refrigerant Connection

EJS002ZL

A new type refrigerant connection has been introduced to all refrigerant lines except the following location.

●

Expansion valve to evaporator

●

Dual-pressure switch (or refrigerant pressure sensor) to liquid tank

FEATURES OF NEW TYPE REFRIGERANT CONNECTION

●

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 facil-
itating piping connections.

SHA815E

ATC-6

PRECAUTIONS

O-RING AND REFRIGERANT CONNECTION

CAUTION:

The new and former refrigerant connections 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 Specifications

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.

RHA246I

Connection

type

Piping connection point

Part number

Qty.

Remarks

New

Low-pressure flexible hose to heater & cooling unit

92473 N8210

O-ring size: 16mm

High-pressure pipe to heater & cooling unit

92471 N8210

O-ring size: 8mm

Condenser to high-pressure flexible hose

92472 N8210

O-ring size: 12mm

Condenser to high-pressure pipe

92471 N8210

O-ring size: 8mm

Compressor to low-pressure flexible hose

92474 N8210

O-ring size: 19mm

Compressor to high-pressure pipe

92472 N8210

O-ring size: 12mm

Liquid tank to condenser pipe

Inlet

92471 N8210

O-ring size: 8mm

Outlet

Former

Dual-pressure switch (or refrigerant pressure sen-
sor)

J2476 89956

O-ring size: 10mm

Expansion valve to evaporator

Inlet

92475 71L00

O-ring size: 12mm

Outlet

92475 72L00

O-ring size: 16mm

PRECAUTIONS

ATC-7

ATC

●

When the compressor is removed, store it in the same position as it is when mounted on the car.
Malfunction 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.

●

When installing an air conditioner in the vehicle, connect the pipes as the final stage of the opera-
tion. Do not remove the seal caps of pipes and other components until just before required for
connection.

●

Allow components stored in cool areas to warm to working area temperature before removing seal
caps. This prevents condensation from forming inside A/C components.

●

Thoroughly remove moisture from the refrigeration system before charging the refrigerant.

●

Always replace used O-rings.

●

When connecting tube, apply lubricant to circle of the O-rings shown in illustration. Be careful not
to apply lubricant to threaded portion.

●

O-ring must be closely attached to dented portion of tube.

●

When replacing the O-ring, be careful not to damage O-ring and tube.

●

Connect tube until you hear it click, then tighten the nut or bolt by hand until snug. Make sure that
the O-ring is installed to tube correctly.

●

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 con-
nections of seal seat to the specified torque.

Precautions for Servicing Compressor

EJS002ZM

●

Plug all openings to prevent moisture and foreign matter from entering.

●

When the compressor is removed, store it in the same position as it is when mounted on the car.

●

When replacing or repairing compressor, follow “Maintenance of Lubricant Quantity in Compres-
sor” exactly. Refer to

ATC-20, "Maintenance of Lubricant Quantity in Compressor"

●

Keep friction surfaces between clutch and pulley clean. If the surface is contaminated, with lubri-
cant, wipe it off by using a clean waste cloth moistened with thinner.

●

After compressor service operation, turn the compressor shaft by hand more than five turns in
both directions. This will equally distribute lubricant inside the compressor. After the compressor
is installed, let the engine idle and operate the compressor for one hour.

●

After replacing the compressor magnet clutch, apply voltage to the new one and check for usual
operation.

Lubricant name:

Nissan A/C System Oil Type S

Part number:

KLH00-PAGS0

RHA861F

ATC-8

PRECAUTIONS

Precautions for Service Equipment

EJS002ZN

RECOVERY/RECYCLING EQUIPMENT

Be certain to follow the manufacturers instructions for machine operation and machine maintenance. Never
introduce any refrigerant other than that specified into the machine.

ELECTRONIC LEAK DETECTOR

Be certain to follow the manufacturer

′

s instructions for tester operation and tester maintenance.

VACUUM PUMP

The lubricant contained inside the vacuum pump is not compatible
with the specified lubricant for HFC-134a (R-134a) A/C systems.
The vent side of the vacuum pump is exposed to atmospheric pres-
sure. So the vacuum pump lubricant may migrate out of the pump
into the service hose. This is possible when the pump is switched off
after evacuation (vacuuming) and hose is connected to it.
To prevent this migration, use a manual valve placed near the hose-
to-pump connection, as follows.

●

Usually vacuum pumps have a manual isolator valve as part of
the pump. Close this valve to isolate the service hose from the
pump.

●

For pumps without an isolator, use a hose equipped with a man-
ual shut-off valve near the pump end. Close the valve to isolate
the hose from the pump.

●

If the hose has an automatic shut off valve, disconnect the hose
from the pump. As long as the hose is connected, the valve is
open and lubricating oil may migrate.

Some one-way valves open when vacuum is applied and close
under a no vacuum condition. Such valves may restrict the pump

′

ability to pull a deep vacuum and are not recommended.

MANIFOLD GAUGE SET

Be certain that the gauge face indicates HFC-134a (R-134a) or
134a. Be sure the gauge set has 1/2

″

-16 ACME threaded connec-

tions for service hoses. Confirm the set has been used only with
refrigerant HFC-134a (R-134a) and specified lubricants.

SERVICE HOSES

Be certain that the service hoses display the markings described
(colored hose with black stripe). All hoses must include positive shut
off devices (either manual or automatic) near the end of the hoses
opposite the manifold gauge.

RHA270DA

SHA533D

RHA272D

PRECAUTIONS

ATC-9

ATC

SERVICE COUPLERS

Never attempt to connect HFC-134a (R-134a) service couplers to an
CFC-12 (R-12) A/C system. The HFC-134a (R-134a) couplers will
not properly connect to the CFC-12 (R-12) system. However, if an
improper connection is attempted, discharging and contamination
may occur.

REFRIGERANT WEIGHT SCALE

Verify that no refrigerant other than HFC-134a (R-134a) and speci-
fied lubricants have been used with the scale. If the scale controls
refrigerant flow electronically, the hose fitting must be 1/2

″

-16

ACME.

CALIBRATING ACR4 WEIGHT SCALE

Calibrate the scale every three months.
To calibrate the weight scale on the ACR4:

Press Shift/Reset and Enter at the same time.

Press 8787 . “A1 ” will be displayed.

Remove all weight from the scale.

Press 0 , then press Enter . “0.00 ” will be displayed and change to “A2 ”.

Place a known weight (dumbbell or similar weight), between 4.5 and 8.6 kg (10 and 19 lb) on the center of
the weight scale.

Enter the known weight using four digits. (Example 10 lb = 10.00, 10.5 lb = 10.50)

Press Enter — the display returns to the vacuum mode.

Press Shift/Reset and Enter at the same time.

Press 6 — the known weight on the scale is displayed.

10. Remove the known weight from the scale. “0.00 ” will be displayed.

11. Press Shift/Reset to return the ACR4 to the program mode.

CHARGING CYLINDER

Using a charging cylinder is not recommended. Refrigerant may be vented into air from cylinder

′

s top valve

when filling the cylinder with refrigerant. Also, the accuracy of the cylinder is generally less than that of an
electronic scale or of quality recycle/recharge equipment.

Precautions for Leak Detection Dye

EJS002ZO

●

The A/C system contains a fluorescent leak detection dye used for locating refrigerant leaks. An ultraviolet
(UV) lamp is required to illuminate the dye when inspecting for leaks.

●

Always wear fluorescence enhancing UV safety goggles to protect your eyes and enhance the visibility of
the fluorescent dye.

●

The fluorescent dye leak detector is not a replacement for an electronic refrigerant leak detector. The fluo-
rescent dye leak detector should be used in conjunction with an electronic refrigerant leak detector to (J-
41995) pin-point refrigerant leaks.

●

For your safety and your Customer

′

s satisfaction, read and follow all manufacture

′

s operating instructions

and precautions prior to performing the work.

Shut-off valve rotation

A/C service valve

Clockwise

Open

Counterclockwise

RHA273D

RHA274D

ATC-10

PRECAUTIONS

●

A compressor shaft seal should not be repaired because of dye seepage. The compressor shaft seal
should only be repaired after confirming the leak with an electronic refrigerant leak detector (J-41995).

●

Always remove any remaining dye from the leak area after repairs are complete to avoid a misdiagnosis
during a future service.

●

Do not allow dye to come into contact with painted body panels or interior components. If dye is spilled,
clean immediately with the approved dye cleaner. Fluorescent dye left on a surface for an extended period
of time cannot be removed.

●

Do not spray the fluorescent dye cleaning agent on hot surfaces (engine exhaust manifold, etc.).

●

Do not use more than one refrigerant dye bottle (1/4 ounce / 7.4 cc) per A/C system.

●

Leak detection dyes for HFC-134a (R-134a) and CFC-12 (R-12) A/C systems are different. Do not use
HFC-134a (R-134a) leak detection dye in CFC-12 (R-12) A/C system or CFC-12 (R-12) leak detector dye
in HFC-134a (R-134a) A/C systems or A/C system damage may result.

●

The fluorescent properties of the dye will remain for over three (3) years unless a compressor malfunction
occurs.

IDENTIFICATION

NOTE:
Vehicles with factory installed fluorescent dye have a green label.
Vehicles without factory installed fluorescent dye have a blue label.

IDENTIFICATION LABEL FOR VEHICLE

Vehicles with factory installed fluorescent dye have this identification label on the front side of hood.

Wiring Diagrams and Trouble Diagnosis

EJS002ZP

When you read wiring diagrams, refer to the followings:

●

GI-11, “How to Read Wiring Diagram” in GI section.

●

EL-11, “Power Supply Routing” in EL section.

When you perform trouble diagnosis, refer to the followings:

●

GI-21, “How to Perform Efficient Diagnosis for an Electrical Incident” in GI section.

●

GI-31, “How to Follow Trouble Diagnosis” in GI section.

MJIA0001E

PREPARATION

ATC-11

ATC

PREPARATION

PFP:00002

Special Service Tools

EJS002ZQ

HFC-134a (R-134a) Service Tools and Equipment

EJS002ZR

Never mix HFC-134a (R-134a) refrigerant and/or its specified lubricant with CFC-12 (R-12) refrigerant and/or
its lubricant.
Separate and non-interchangeable service equipment must be used for handling each type of refrigerant/lubri-
cant.
Refrigerant container fittings, service hose fittings and service equipment fittings (equipment which handles
refrigerant and/or lubricant) are different between CFC-12 (R-12) and HFC-134a (R-134a). This is to avoid
mixed use of the refrigerants/lubricant.
Adapters that convert one size fitting to another must never be used: refrigerant/lubricant contamination will
occur and compressor malfunction will result.

Tool number
Tool name

Description

KV99106100
Clutch disc wrench

Removing shaft nut and clutch disc

KV99232340
or
KV992T0001
Clutch disc puller

Removing clutch disc

KV99106200
Pulley installer

Installing pulley

S-NT232

RJIA0194E

S-NT376

S-NT235

ATC-12

PREPARATION

Tool number
Tool name

Description

HFC-134a (R-134a) refrigerant

Container color: Light blue
Container marking: HFC-134a (R-
134a)
Fitting size: Thread size

●

Large container 1/2

″

-16 ACME

KLH00-PAGS0
Nissan A/C System Oil Type S

Type: Poly alkylene glycol oil (PAG),
type S
Application: HFC-134a (R-134a)
swash plate compressors (Nissan
only)

Lubricity: 40 m

(1.4 Imp fl oz.)

Recovery/Recycling/
Recharging equipment (ACR4)

Function: Refrigerant Recovery and
Recycling and Recharging

Electrical leak detector

Power supply:
DC 12V (Cigarette lighter)

(J-43926)
Refrigerant dye leak detection kit
Kit includes:
(J-42220)
Fluorescent dye leak detector
(J-41459)
HFC-134a (R-134a) dye injector
Use with J-41447, 1/4 ounce
bottle
(J-41447)
HFC-134a (R-134a) fluorescent
leak detection dye
(Box, of 24, 1/4 ounce bottles)
(J-43872)
Dye cleaner

Power supply:
DC 12V (Battery terminal)

S-NT196

S-NT197

RJIA0195E

SHA705EB

ZHA200H

PREPARATION

ATC-13

ATC

(J-42220)
Fluorescent dye leak detector

Power supply: DC 12V (Battery
terminal)
For checking refrigerant leak when
fluorescent dye is installed in A/C
system.
Includes: UV lamp and UV safety
goggles

(J-41447)
HFC-134a (R-134a) Fluorescent
leak detection dye
(Box of 24, 1/4 ounce bottles)

Application: For HFC-134a (R-134a)
PAG oil
Container: 1/4 ounce (7.4 cc) bottle
(Includes self-adhesive dye
identification labels for affixing to
vehicle after charging system with
dye.)

(J-41459)
HFC-134a (R-134a) Dye injector
Use with J-41447, 1/4 ounce
bottle

For injecting 1/4 ounce of fluorescent
leak detection dye into A/C system.

(J-43872)
Dye cleaner

For cleaning dye spills.

Manifold gauge set (with hoses
and couplers)

Identification:

●

The gauge face indicates HFC-134a
(R-134a).
Fitting size: Thread size

●

1/2

″

-16 ACME

Service hoses

●

High side hose

●

Low side hose

●

Utility hose

Hose color:

●

Low hose: Blue with black stripe

●

High hose: Red with black stripe

●

Utility hose: Yellow with black stripe
or green with black stripe
Hose fitting to gauge:

●

1/2

″

-16 ACME

Service couplers

●

High side coupler

●

Low side coupler

Hose fitting to service hose:

●

M14 x 1.5 fitting is optional or
permanently attached.

Tool number
Tool name

Description

SHA438F

SHA439F

SHA440F

SHA441F

RJIA0196E

S-NT201

S-NT202

ATC-14

PREPARATION

Refrigerant weight scale

For measuring of refrigerant
Fitting size: Thread size

●

1/2

″

-16 ACME

Vacuum pump
(Including the isolator valve)

Capacity:

●

Air displacement: 4 CFM

●

Micron rating: 20 microns

●

Oil capacity: 482 g (17 oz.)
Fitting size: Thread size

●

1/2

″

-16 ACME

Tool number
Tool name

Description

S-NT200

S-NT203

REFRIGERATION SYSTEM

ATC-15

ATC

REFRIGERATION SYSTEM

PFP:KA990

Refrigerant Cycle

EJS002ZS

REFRIGERANT FLOW

The refrigerant flows in the standard pattern, that is, through the compressor, the condenser with 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

Under usual operating conditions, when the A/C is switched on, the compressor runs continuously, and the
evaporator pressure, and therefore, temperature is controlled by the CSV613 displacement compressor to
prevent freeze up.

Refrigerant System Protection

EJS002ZT

REFRIGERANT PRESSURE SENSOR (WITH QG ENGINE)

The refrigerant system is protected against excessively high or low pressures by the refrigerant pressure sen-
sor, located on the liquid tank. If the system pressure rises above, or falls below the specifications, the refriger-
ant pressure sensor detects the pressure inside the refrigerant line and sends the voltage signal to the ECM.
ECM makes the A/C relay go OFF and stops the compressor when pressure on the high pressure side
detected by refrigerant pressure sensor is over about 2,746 kPa (27.5 bar, 28 kg/cm

, 398 psi), or below

about 134 kPa (1.37 bar, 1.4 kg/cm

, 20 psi).

DUAL-PRESSURE SWITCH (WITH YD ENGINE)

The refrigerant system is protected against excessively high or low pressures by the dual-pressure switch,
located on the liquid tank (condenser). If the system pressure rises above or falls below the specifications, the
dual-pressure 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 compressor.
When the pressure of refrigerant in the system increases to an unusual level [more than 3,727 kPa (37.3 bar,
38 kg/cm

, 540 psi)], the release port on the pressure relief valve automatically opens and releases refriger-

ant into the atmosphere.

RJIA2321E

ATC-16

REFRIGERATION SYSTEM

CSV613 Variable Displacement Compressor

EJS002ZU

GENERAL INFORMATION

The CSV613 compressor differs from previous units. The vent temperatures of the CSV613 compressor
do not drop too far below 5

C (41

F) when:

Evaporator intake air temperature is less than 20

C (68

F).

Engine is running at speeds less than 1,500 rpm.
This is because the CSV613 compressor provides a means of “capacity” control.

The CSV613 compressor provides refrigerant control under varying conditions. During cold winters, it may
not produce high refrigerant pressure discharge (compared to previous units) when used with air condi-
tioning systems.

A “clanking” sound may occasionally be heard during refrigerant charge. The sound indicates that the tilt
angle of the swash plate has changed and is not a problem.

For air conditioning systems with the CSV613 compressor, the clutch remains engaged unless: the sys-
tem main switch, fan switch or ignition switch is turned OFF. When ambient (outside) temperatures are
low or when the amount of refrigerant is insufficient, the clutch is disengaged to protect the compressor.

A constant range of suction pressure is maintained when engine speed is greater than a certain value. It
normally ranges from 147 to 177 kPa (1.47 to 1.77 bar, 1.5 to 1.8 kg/cm

, 21 to 26 psi) under varying con-

ditions.
In previous compressors, however, suction pressure was reduced with increases in engine speed.

DESCRIPTION
General

The variable compressor is basically a swash plate type that changes piston stroke in response to the required
cooling capacity.

Content .. 32 33 34 35 ..