Nissan Murano Z51 (2008 year). Manual

HA-8

< SYMPTOM DIAGNOSIS >

REFRIGERATION SYSTEM SYMPTOMS

SYMPTOM DIAGNOSIS

REFRIGERATION SYSTEM SYMPTOMS

Trouble Diagnosis For Unusual Pressure

INFOID:0000000003072952

Diagnose using a manifold gauge whenever the system’s high and/or low side pressure(s) is/are unusual. The
marker above the gauge scale in the following tables indicates the standard pressure range. Refer to the
above table (Ambient air temperature-to-operating pressure table) since the standard pressure, however, dif-
fers from vehicle to vehicle.

Symptom Table

INFOID:0000000003072953

Gauge indication

Refrigerant cycle

Probable cause

Corrective action

Both high and low-pressure sides
are too high.

The pressure returns to nor-
mal and is reduced soon after
water is splashed on con-
denser.

Excessive refrigerant charge in
refrigeration cycle.

Reduce refrigerant until speci-
fied pressure is obtained.

Air suction by cooling fan is in-
sufficient.

Insufficient condenser cooling
performance.

↓

Condenser fins are
clogged.

Improper fan rotation of
cooling fan.

• Clean condenser.
• Check and repair cooling fan

if necessary.

• Low-pressure pipe is not

cold.

• When the compressor is

stopped the high-pressure
reading quickly drops by
approximately 196 kPa (2

kg/cm

, 28 psi). It then de-

creases gradually thereaf-
ter.

Poor heat exchange in con-
denser
(After compressor operation
stops, high-pressure decreas-
es too slowly).

↓

Air in refrigeration cycle.

Evacuate repeatedly and re-
charge system.

Engine tends to overheat.

Engine cooling systems mal-
function.

Check and repair each engine
cooling system.

• An area of the low-pressure

pipe is colder than areas
near the evaporator outlet.

• Low-pressure pipe is some-

times covered with frost.

• Excessive liquid refrigerant

on low-pressure side.

• Excessive refrigerant dis-

charge flow.

• Expansion valve is slightly

open compared with the
specification.

↓

Improper expansion valve ad-
justment.

Replace expansion valve.

High-pressure side is too high and
low-pressure side is too low.

Upper side of condenser and
high-pressure side are hot,
however, the liquid tank is not
very hot.

High-pressure tube or parts lo-
cated between compressor
and condenser are clogged or
crushed.

• Check and repair or replace

malfunctioning parts.

• Check lubricant for contami-

nation.

AC359A

AC360A

Revision: 2008 October

2009 Murano

REFRIGERATION SYSTEM SYMPTOMS

HA-9

< SYMPTOM DIAGNOSIS >

High-pressure side is too low and
low-pressure side is too high.

High- and low-pressure sides
become equal soon after
compressor operation stops.

Compressor pressure opera-
tion is improper.

↓

Damaged inside compressor
packings.

Replace compressor.

No temperature difference be-
tween high- and low-pressure
sides.

Compressor pressure opera-
tion is improper.

↓

Damaged inside compressor
packings.

Replace compressor.

Both high and low-pressure sides
are too low.

• There is a big temperature

difference between the liq-
uid tank outlet and inlet.
Outlet temperature is ex-
tremely low.

• Liquid tank inlet and expan-

sion valve are frosted.

Liquid tank inside is slightly
clogged.

• Replace liquid tank.
• Check lubricant for contami-

nation.

• Expansion valve inlet tem-

perature is extremely low
compared with areas near
the liquid tank.

• Expansion valve inlet is

frosted.

• Temperature difference oc-

curs somewhere in high-
pressure side.

High-pressure pipe located be-
tween liquid tank and expan-
sion valve is clogged.

• Check and repair malfunc-

tioning parts.

• Check lubricant for contami-

nation.

Expansion valve and liquid
tank are warm or slightly cool
when touched.

Low refrigerant charge.

↓

Leaking fittings or components.

Check refrigerant for leakages.
Refer to

HA-29, "Refrigerant

Leakages"

There is a big temperature dif-
ference between the expan-
sion valve inlet and outlet
while the valve itself is frost-
ed.

Expansion valve slightly closes
compared with the specifica-
tion.

↓

Improper expansion
valve adjustment.

Malfunctioning expansion
valve.

Outlet and inlet may be
clogged.

• Remove foreign materials by

using compressed air.

• Replace expansion valve.
• Check lubricant for contami-

nation.

An area of the low-pressure
pipe is colder than areas near
the evaporator outlet.

Low-pressure pipe is clogged
or crushed.

• Check and repair malfunc-

tioning parts.

• Check lubricant for contami-

nation.

Air flow volume is not suffi-
cient or is too low.

Evaporator is frozen.

• Check intake sensor circuit.

Refer to

HAC-50, "Diagnosis

Procedure"

(without 7 inch

display) or

HAC-169, "Diag-

nosis Procedure"

(with 7 inch

display).

• Replace compressor.
• Repair evaporator fins.
• Replace evaporator.
• Check blower motor circuit.

Refer to

HAC-68, "Diagnosis

Procedure"

(without 7 inch

display) or

HAC-187, "Diag-

nosis Procedure"

(with 7 inch

display).

Gauge indication

Refrigerant cycle

Probable cause

Corrective action

AC356A

AC353A

Revision: 2008 October

2009 Murano

HA-10

< SYMPTOM DIAGNOSIS >

REFRIGERATION SYSTEM SYMPTOMS

Low-pressure side sometimes be-
comes negative.

• Air conditioning system

does not function and does
not cyclically cool the com-
partment air.

• The system constantly

functions for a period of
time after compressor is
stopped and restarted.

Refrigerant does not discharge
cyclically.

↓

Moisture is frozen at expansion
valve outlet and inlet.

↓

Water is mixed with refrigerant.

• Drain water from refrigerant

or replace refrigerant.

• Replace liquid tank.

Low-pressure side becomes nega-
tive.

Liquid tank or front/rear side
of expansion valve’s pipe is
frosted or wet with dew.

High-pressure side is closed
and refrigerant does not flow.

↓

Expansion valve or liquid tank
is frosted.

Leave the system at rest until
no frost is present. Start it again
to check whether or not the mal-
function is caused by water or
foreign materials.
• Cooling is initially okay if wa-

ter is the cause. Then the wa-
ter freezes, which causes a
blockage. Drain water from
refrigerant or replace refriger-
ant.

• Remove expansion valve an-

dremove the particles with
dryand compressed air (not
shopair) if due to foreign par-
ticles.

• Replace expansion valve if

either of the above methods
cannot correct the malfunc-
tion.

• Replace liquid tank.
• Check lubricant for contami-

nation.

Gauge indication

Refrigerant cycle

Probable cause

Corrective action

AC354A

AC362A

Revision: 2008 October

2009 Murano

COMPRESSOR SYSTEM SYMPTOMS

HA-11

< SYMPTOM DIAGNOSIS >

COMPRESSOR SYSTEM SYMPTOMS

Symptom Table

INFOID:0000000003618648

Follow the next table and perform trouble diagnosis if there is a compressor unit malfunction (internal noise,
insufficient cooling).

*1: First conduct inspection according to trouble diagnosis for each malfunction.
*2: Applicable to variable capacity compressor only.

Symptom

Inspection method

Check list

Result

Action

Noise from compressor unit
When A/C is ON.
(rattling or rolling sound)

Cooker system in-
ternal pressure

Check with manifold gauge

Both high- and low-
pressure sides are

high.

Recharge with proper
amount of refrigerant.

High/low-pressures

hunt.

Replace compressor
only.

Check compressor
oil condition.

Sample compressor oil and
judge.

Refer to the criteria
shown in compressor
lubricant.

Judgment result 1: Re-
place compressor only.

Judgement result 2:
Replace compressor
and liquid tank.

Insufficient cooling

Compressor body

Check rotation of compressor.
If sized or stuck, sample com-
pressor oil and judge.

Cooler system inter-
nal pressure

Check with a manifold gauge.
Sample compressor oil and
judge if the difference between
high-pressure and low-pres-
sure is small or if they are al-
most the same.

Outlet air temperature rises

temporarily while driving.

—

Replace compressor
only.

JSIIA0927GB

Revision: 2008 October

2009 Murano

HA-12

< PRECAUTION >

PRECAUTIONS

PRECAUTION

PRECAUTIONS

FOR USA AND CANADA

FOR USA AND CANADA : Precaution for Supplemental Restraint System (SRS) "AIR
BAG" and "SEAT BELT PRE-TENSIONER"

INFOID:0000000003751452

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. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIRBAG” and “SEAT BELT” 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 performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIRBAG”.

• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-

vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors while ignition switch is
ON or engine is running, never use air or electric power tools or strike near the sensor(s) with a hammer.
Heavy vibration may activate the sensor(s), deploy the airbag(s), possibly cause serious injury.
When using air or electric power tools or hammers, always turn OFF ignition switch, disconnect the battery,
and wait 3 minutes or more before performing any service.

FOR MEXICO

FOR MEXICO : Precaution for Supplemental Restraint System (SRS) "AIR BAG" and
"SEAT BELT PRE-TENSIONER"

INFOID:0000000003751453

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 performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIRBAG”.

• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-

vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

Revision: 2008 October

2009 Murano

PRECAUTIONS

HA-13

< PRECAUTION >

When using air or electric power tools or hammers, always turn OFF ignition switch, disconnect the battery,
and wait 3 minutes or more before performing any service.

Precaution Necessary for Steering Wheel Rotation after Battery Disconnect

INFOID:0000000003711295

NOTE:
• Before removing and installing any control units, first turn the push-button ignition switch to the LOCK posi-

tion, then disconnect both battery cables.

• After finishing work, confirm that all control unit connectors are connected properly, then re-connect both

battery cables.

• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.

If a DTC is detected, perform trouble diagnosis according to self-diagnosis results.

This vehicle is equipped with a push-button ignition switch and a steering lock unit.
If the battery is disconnected or discharged, the steering wheel will lock and cannot be turned.
If turning the steering wheel is required with the battery disconnected or discharged, follow the procedure
below before starting the repair operation.

OPERATION PROCEDURE

Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.

Turn the push-button ignition switch to ACC position.
(At this time, the steering lock will be released.)

Disconnect both battery cables. The steering lock will remain released with both battery cables discon-
nected and the steering wheel can be turned.

Perform the necessary repair operation.

When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn
the push-button ignition switch from ACC position to ON position, then to LOCK position. (The steering
wheel will lock when the push-button ignition switch is turned to LOCK position.)

Perform self-diagnosis check of all control units using CONSULT-III.

Precaution for Procedure without Cowl Top Cover

INFOID:0000000003711296

When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.

Precautions For Xenon Headlamp Service

INFOID:0000000003751454

WARNING:

Comply with the following warnings to prevent any serious accident.
• Disconnect the battery cable (negative terminal) or the power supply fuse before installing, remov-

ing, or touching the xenon headlamp (bulb included). The xenon headlamp contains high-voltage
generated parts.

• Never work with wet hands.
• Check the xenon headlamp ON-OFF status after assembling it to the vehicle. Never turn the xenon

headlamp ON in other conditions. Connect the power supply to the vehicle-side connector.
(Turning it ON outside the lamp case may cause fire or visual impairments.)

• Never touch the bulb glass immediately after turning it OFF. It is extremely hot.

CAUTION:

Comply with the following cautions to prevent any error and malfunction.

PIIB3706J

Revision: 2008 October

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HA-14

< PRECAUTION >

PRECAUTIONS

• Install the xenon bulb securely. (Insufficient bulb socket installation may melt the bulb, the connec-

tor, the housing, etc. by high-voltage leakage or corona discharge.)

• Never perform HID circuit inspection with a tester.
• Never touch the xenon bulb glass with hands. Never put oil and grease on it.
• Dispose of the used xenon bulb after packing it in thick vinyl without breaking it.
• Never wipe out dirt and contamination with organic solvent (thinner, gasoline, etc.).

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

INFOID:0000000003072958

CAUTION:

• CFC-12 (R-12) refrigerant and HFC-134a (R-134a) refrigerant are not compatible. Compressor mal-

function is likely to occur if the refrigerants are mixed, refer to “CONTAMINATED REFRIGERANT”
below. To determine the purity of HFC-134a (R-134a) in the vehicle and recovery tank, use Refriger-
ant Recovery/Recycling Recharging equipment and Refrigerant Identifier.

• Use only specified lubricant for the HFC-134a (R-134a) A/C system and HFC-134a (R-134a) compo-

nents. Compressor malfunction is likely to occur if lubricant other than that specified is used.

• The specified HFC-134a (R-134a) lubricant rapidly absorbs moisture from the atmosphere. The fol-

lowing handling precautions must be observed:

- Immediately cap (seal) the component to minimize the entry of moisture from the atmosphere when

removing refrigerant components from a vehicle.

- Never remove the caps (unseal) until just before connecting the components when installing refrig-

erant components to a vehicle. Connect all refrigerant loop components as quickly as possible to
minimize the entry of moisture into system.

- Use only the specified lubricant from a sealed container. Immediately reseal containers of lubricant.

Lubricant becomes saturated with moisture and should not be used without proper sealing.

- Never allow lubricant (NISSAN A/C System Oil Type S) to come in to contact with styrene foam parts.

Damage may result.

CONTAMINATED REFRIGERANT

Take the appropriate steps shown below if a refrigerant other than pure HFC-134a (R-134a) is identified
in a vehicle:
• Explain to the customer that environmental regulations prohibit the release of contaminated refrigerant into

the atmosphere.

• Explain that recovery of the contaminated refrigerant could damage service equipment and refrigerant sup-

ply.

• Suggest the customer return the vehicle to the location of previous service where the contamination may

have occurred.

• If repairing, recover the refrigerant using only dedicated equipment and containers. Never reintroduce

contaminated refrigerant into the existing service equipment. Contact a local refrigerant product retailer
for available service if the facility does not have dedicated recovery equipment. This refrigerant must be dis-
posed of in accordance with all federal and local regulations. In addition, replacement of all refrigerant sys-
tem components on the vehicle is recommended.

• The air conditioner warranty is void if the vehicle is within the warranty period. Please contact Nissan Cus-

tomer Affairs for further assistance.

General Refrigerant Precaution

INFOID:0000000003072959

WARNING:

• Never breathe A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose or throat.

Remove HFC-134a (R-134a) from the A/C system, using certified service equipment meeting require-
ments of SAE J-2210 [HFC-134a (R-134a) recycling equipment], or J-2209 [HFC-134a (R-134a) recov-
ery equipment]. Ventilate the work area before resuming service if accidental system discharge
occurs. Additional health and safety information may be obtained from refrigerant and lubricant
manufacturers.

• Never release refrigerant into the air. Use approved recovery/recycling equipment to capture the

refrigerant each 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.

• Never store or heat refrigerant containers above 52

C (126

F).

• Never heat a refrigerant container with an open flame. Place the bottom of the container in a warm

pail of water if container warming is required.

• Never intentionally drop, puncture, or incinerate refrigerant containers.

Revision: 2008 October

2009 Murano

PRECAUTIONS

HA-15

< PRECAUTION >

• Keep refrigerant away from open flames. Poisonous gas is produced if refrigerant burns.
• Refrigerant displaces oxygen, therefore be certain to work in well ventilated areas to prevent suffo-

cation.

• Never pressure test or leakage 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 proven 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.

Refrigerant Connection

INFOID:0000000003072960

A new type refrigerant connection has been introduced to all refrigerant lines except the following locations.
• Expansion valve to evaporator
• Refrigerant pressure sensor to liquid tank

O-RING AND REFRIGERANT CONNECTION

CAUTION:

The new and former refrigerant connections use different O-ring configurations. Never confuse O-
rings since they are not interchangeable. Refrigerant may leak at the connection if an incorrect O-ring
is installed.

O-Ring Part Numbers and Specifications

Former type refrigerant connection

New type refrigerant connection

O-ring size

JPIIA0453ZZ

Revision: 2008 October

2009 Murano

HA-16

< PRECAUTION >

PRECAUTIONS

WARNING:

Check that all refrigerant is discharged into the recycling equipment and the pressure in the system is
less than the atmospheric pressure. Then gradually loosen the discharge side hose fitting and remove
it.

CAUTION:

Observe the following items when replacing or cleaning refrigerant cycle components.
• Store it in the same way as it is when mounted on the car when the compressor is removed. Failure

to do so will cause lubricant to enter the low-pressure chamber.

• Always use a torque wrench and a back-up wrench when connecting tubes.
• Immediately plug all openings to prevent the entry of dust and moisture after disconnecting tubes.
• Connect the pipes at the final stage of the operation when installing an air conditioner in the vehicle.

Never remove the seal caps of pipes and other components until just before they are 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.
• Apply lubricant to the circle of the O-rings shown in illustration when connecting a tube. Never apply

lubricant to the threaded portion.

• O-ring must be closely attached to the groove portion of tube.
• Never damage O-ring and tube when replacing the O-ring.
• Connect tube until a click can be heard. Then tighten the nut or bolt by hand. Check that the O-ring is

installed to the tube correctly.

Connection type

Piping connection point

Part number

QTY

O-ring size

New

Low-pressure flexible hose to low-pressure pipe

92474 N8210

High-pressure pipe to condenser pipe assembly (Outlet)

92471 N8210

Condenser pipe assembly (Inlet) to high-pressure flexible
hose

92472 N8210

Condenser assembly to condenser pipe as-
sembly

Inlet

92472 N8210

Outlet

92471 N8210

Low-pressure pipe to expansion valve

92473 N8210

High-pressure pipe to expansion valve

92471 N8210

Compressor to low-pressure flexible hose

92474 N8210

Compressor to high-pressure flexible hose

92472 N8210

Liquid tank to condenser assembly

Inlet

92471 N8210

Outlet

Former

Refrigerant pressure sensor to liquid tank

J2476 89956

Expansion valve to evaporator pipe assembly

Inlet

92475 71L00

Outlet

92475 72L00

Evaporator to evaporator pipe assembly

Inlet

92475 71L00

Outlet

92475 72L00

Name

: NISSAN A/C System Oil Type S

Revision: 2008 October

2009 Murano

PRECAUTIONS

HA-17

< PRECAUTION >

• Perform a leakage test and check that there is no leakage from connections after connecting the line.

Disconnect the line and replace the O-ring when the refrigerant leakage point is found. Then tighten
the connections of seal seat to the specified torque.

Service Equipment

INFOID:0000000003072961

RECOVERY/RECYCLING EQUIPMENT

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

ELECTRICAL LEAK DETECTOR

Be certain to follow the manufacturer 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 the hose is connected to it.
To prevent this migration, use a manual valve placed near the hose-
to-pump connection, as per the following procedure.
• Vacuum pumps usually have a manual isolator valve as part of the

pump. Close this valve to isolate the service hose from the pump.

• Use a hose equipped with a manual shut-off valve near the pump

end for pumps without an isolator. Close the valve to isolate the
hose from the pump.

• Disconnect the hose from the pump if the hose has an automatic

shut-off valve. 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 no vacuum condition. Such valves may restrict the ability of
the pump to create a deep vacuum and are not recommended.

MANIFOLD GAUGE SET

RHA861F

RHA270DA

Revision: 2008 October

2009 Murano

HA-18

< PRECAUTION >

PRECAUTIONS

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

″

-16 ACME threaded connections for ser-

vice 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 a black stripe). All hoses must equip positive
shut-off devices (either manual or automatic) near the end of the
hoses opposite to the manifold gauge.

SERVICE COUPLERS

Never attempt to connect HFC-134a (R-134a) service couplers to a
CFC-12 (R-12) A/C system. The HFC-134a (R-134a) couplers do
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. The hose fitting must
be 1/2

″

-16 ACME if the scale controls refrigerant flow electronically.

CHARGING CYLINDER

Use of a charging cylinder is not recommended. Refrigerant may be vented into the air from the top valve of
the cylinder 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.

SHA533D

RHA272D

Shut-off valve rotation

A/C service valve

Clockwise

Open

Counterclockwise

RHA273D

RHA274D

Revision: 2008 October

2009 Murano

COMPRESSOR

HA-19

< PRECAUTION >

COMPRESSOR

General Precautions

INFOID:0000000003072962

CAUTION:

• Plug all openings to prevent moisture and foreign material from entering.
• Store it in the same way as it is when mounted on the car when the compressor is removed.
• Follow “Maintenance of Lubricant Quantity in Compressor” exactly when replacing or repairing the

compressor. Refer to

HA-25, "Maintenance of Lubricant Quantity"

• Keep friction surfaces between clutch and pulley clean. Wipe it off by using a waste moistened with

thinner if the surface is contaminated with lubricant.

• Turn the compressor shaft by hand more than five turns in both directions after compressor service

operation. This equally distributes lubricant inside the compressor. Let the engine idle and operate
the compressor for one hour after the compressor is installed.

• Apply voltage to the new compressor and check for normal operation after replacing the compressor

magnet clutch.

Revision: 2008 October

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HA-20

< PRECAUTION >

LEAK DETECTION DYE

LEAK DETECTION DYE

General Precautions

INFOID:0000000003072963

CAUTION:

• The A/C system contains a fluorescent leak detection dye used for locating refrigerant leakages. An

ultraviolet (UV) lamp is required to illuminate the dye when inspecting for leakages.

• Always wear fluorescence enhancing UV safety goggles to protect the eyes and enhance the visibil-

ity of the fluorescent dye.

• The fluorescent dye leak detector is not a replacement for an electrical leak detector (SST: J-41995).

The fluorescent dye leak detector should be used in conjunction with an electrical leak detector
(SST: J-41995) to pin-point refrigerant leakages.

• Read and follow all manufacturer operating instructions and precautions prior to performing work

for safety and customer satisfaction.

• A compressor shaft seal should not necessarily be repaired because of dye seepage. The compres-

sor shaft seal should only be repaired after confirming the leakage with an electrical leak detector
(SST: J-41995).

• Always remove any remaining dye from the leakage area after repairs are completed to avoid a mis-

diagnosis during future service.

• Never allow dye to come into contact with painted body panels or interior components. Immediately

clean with the approved dye cleaner if dye is spilled. Fluorescent dye left on a surface for an
extended period of time cannot be removed.

• Never spray fluorescent dye cleaning agent on hot surfaces (engine exhaust manifold, etc.).
• Never 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. Never use

HFC-134a (R-134a) leak detection dye in CFC-12 (R-12) A/C system or CFC-12 (R-12) leak detection
dye in HFC-134a (R-134a) A/C system, otherwise A/C system damage may result.

• The fluorescent properties of the dye remains for three or more years unless a compressor malfunc-

tion 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 an identification label on the front side of hood.

Revision: 2008 October

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PREPARATION

HA-21

< PREPARATION >

PREPARATION

Special Service Tool

INFOID:0000000003072964

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

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

• 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/

lubricant.

• Refrigerant container fittings, service hose fittings and service equipment fittings (equipment that 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.

• Never use adapters that convert one size fitting to another. Refrigerant/lubricant contamination occurs and

compressor malfunction may result.

Tool number

(Kent-Moore No.)

Tool name

Description

(ACR2005-NI)
ACR5 A/C Service Center

Function: Refrigerant recovery, recycling
and recharging

(J-41995)
Electrical leak detector

Power supply:
DC 12 V (Battery terminal)

(J-43926)
Refrigerant dye leak detection
kit
Kit includes:
(J-42220)
UV lamp and UV safety goggles
(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)
Refrigerant dye cleaner

Power supply:
DC 12 V (Battery terminal)

WJIA0293E

AHA281A

ZHA200H

Revision: 2008 October

2009 Murano

HA-22

< PREPARATION >

PREPARATION

(J-42220)
UV lamp and UV safety goggles

Power supply:
DC 12 V (Battery terminal)
For checking refrigerant leakage when flu-
orescent dye is equipped 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)
Refrigerant dye cleaner

For cleaning dye spills

(J-39183)
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-pressure side hose

(J-39501-72)

• Low-pressure side hose

(J-39502-72)

• Utility hose

(J-39476-72)

Hose color:
• Low-pressure side hose: Blue with black

stripe

• High-pressure side hose: Red with black

stripe

• Utility hose: Yellow with black stripe or

green with black stripe

Hose fitting to gauge:

• 1/2

″

-16 ACME

Tool number

(Kent-Moore No.)

Tool name

Description

SHA438F

SHA439F

SHA440F

SHA441F

RJIA0196E

S-NT201

Revision: 2008 October

2009 Murano

PREPARATION

HA-23

< PREPARATION >

Commercial Service Tool

INFOID:0000000003072965

Sealant or/and Lubricant

INFOID:0000000003072966

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

• 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/

lubricant.

Service couplers
• High-pressure side coupler

(J-39500-20)

• Low-pressure side coupler

(J-39500-24)

Hose fitting to service hose:
M14 x 1.5 fitting is optional or permanently
attached.

(J-39650)
Refrigerant weight scale

For measuring of refrigerant
Fitting size: Thread size

1/2

″

-16 ACME

(J-39649)
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

(Kent-Moore No.)

Tool name

Description

S-NT202

S-NT200

S-NT203

Tool name

Description

Refrigerant identifier equipment

Checking for refrigerant purity and
system contamination

Power tools

For loosening bolts and nuts

RJIA0197E

PBIC0190E

Revision: 2008 October

2009 Murano

Nissan Murano Z51 (2008 year). Manual - part 217