Nissan GT-R (2007-2014 year). HEATER & AIR CONDITIONING CONTROL SYSTEM. Service Manual

DIAGNOSIS AND REPAIR WORKFLOW

HA-3

< BASIC INSPECTION >

>> GO TO 2.

SYMPTOM CHECK

Check the symptom from the customer's information. Check that any symptom occurs other than the inter-
viewed symptom.

Insufficient cooling/heating>>GO TO 3.
Refrigerant leakage>>GO TO 6.
Noise >> GO TO 7.

CONTROL SYSTEM DIAGNOSIS

Perform the system diagnosis for the A/C control system. (This work should be performed by GT-R certified
NISSAN dealer.)
Is A/C control system normal?

YES

>> GO TO 4.

>> GO TO 8.

PERFORMANCE TEST

Perform the performance test. Check the operation of each part. Refer to

HA-26, "Inspection"

>> GO TO 5.

TROUBLE DIAGNOSIS FOR UNUSUAL PRESSURE

Diagnose using a manifold gauge whenever system's high and/or low side pressure(s) is/are unusual. Specify
the malfunctioning part. Refer to

HA-7, "Symptom Table"

Low refrigerant charge>>GO TO 6.
Except above>>GO TO 8.

CHECK REFRIGERANT FOR LEAKAGES

Check refrigerant for leakages. Specify the malfunctioning part. Refer to

HA-29, "Inspection"

>> GO TO 8.

TROUBLE DIAGNOSIS FOR NOISE

Perform trouble diagnosis for noise. Specify the malfunctioning part.

>> GO TO 8.

MALFUNCTION PART REPAIR

Repair or replace the malfunctioning part.

>> GO TO 9.

REPAIR CHECK (OPERATION CHECK)

Check the operation of each part.

Does it operate normally?

YES

>> INSPECTION END

>> GO TO 2.

Revision: 2012 November

2014 GT-R

HA-4

< SYSTEM DESCRIPTION >

REFRIGERATION SYSTEM

SYSTEM DESCRIPTION

REFRIGERATION SYSTEM

System Diagram

INFOID:0000000009160165

System Description

INFOID:0000000009160166

REFRIGERANT CYCLE

Refrigerant Flow

The refrigerant flows from the compressor, through the condenser with liquid tank, through the evaporator, and
back to the compressor. The refrigerant evaporation in the evaporator is controlled by an externally equalized
expansion valve, located inside the evaporator case.

Freeze Protection

To prevent evaporator from freezing up, the evaporator air temperature is monitored, and the voltage signal to
the A/C auto amp. makes the A/C relay go OFF and stop the compressor.

REFRIGERANT SYSTEM PROTECTION

Refrigerant Pressure Sensor

The refrigerant system is protected against excessively high- or low-pressures by the refrigerant pressure sen-
sor, located on the liquid tank. The refrigerant pressure sensor detects the pressure inside the refrigerant line
and sends the voltage signal to the ECM if the system pressure rises above, or falls below the specifications.
The high-pressure side detected by refrigerant pressure sensor is approximately 3,120 kPa (31.8 kg/cm

, 452

psi) or more when the engine speed is 1,500 rpm or more. It is approximately 2,740 kPa (27.9 kg/cm

, 397 psi)

when the engine speed is less than 1,500 rpm. When it is approximately 120 kPa (1.2 kg/cm

, 17 psi) or less,

ECM turns the A/C relay to OFF and stops the compressor.

Pressure Relief Valve

The refrigerant system is also protected by a pressure relief valve, located in the rear head of the compressor.
The release port on the pressure relief valve automatically opens and releases refrigerant into the atmosphere
when the pressure of refrigerant in the system increases to an unusual level [more than 3,628 kPa (37 kg/cm

526 psi)].

RJIA1552E

Revision: 2012 November

2014 GT-R

REFRIGERATION SYSTEM

HA-5

< SYSTEM DESCRIPTION >

Component Parts Location

INFOID:0000000009160167

ENGINE COMPARTMENT

PASSENGER COMPARTMENT

NNIIA0069ZZ

Refrigerant pressure sensor

Liquid tank

Condenser

Compressor

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2014 GT-R

HA-6

< SYSTEM DESCRIPTION >

REFRIGERATION SYSTEM

Component Description

INFOID:0000000009160168

Expansion valve

Evaporator

Blower motor

JSIIA1252ZZ

Component

Description

Compressor

Intakes, compresses, and discharges refrigerant, to circulate refrigerant inside the refrigerant cycle.

Condenser

Cools refrigerant discharged from compressor, and transforms it to liquid refrigerant.

Liquid tank

Eliminates foreign matter in refrigerant, and stores temporarily liquid refrigerant.

Refrigerant pressure sensor

(This work should be performed by GT-R certified NISSAN dealer.)

Expansion valve

Transforms high-pressure liquid refrigerant to mist form low-pressure liquid refrigerant by drawing
function.

Evaporator

The mist form liquid refrigerant transforms to gas by evaporation by the air conveyed from the blower
motor. The air is cooled by the heat by evaporation.

Blower motor

Takes in air in the vehicle or fresh outside air, provides it forcedly to the air conditioner, and conveys
it inside the vehicle.

Revision: 2012 November

2014 GT-R

REFRIGERATION SYSTEM SYMPTOMS

HA-7

< SYMPTOM DIAGNOSIS >

SYMPTOM DIAGNOSIS

REFRIGERATION SYSTEM SYMPTOMS

Trouble Diagnosis For Unusual Pressure

INFOID:0000000009160169

Diagnose using a manifold gauge whenever 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 (usual) pressure range. Refer to
above table (Ambient air temperature-to-operating pressure table) since the standard (usual) pressure, how-
ever, differs from vehicle to vehicle.

Symptom Table

INFOID:0000000009160170

Gauge indication

Refrigerant cycle

Probable cause

Corrective action

Both high- and low-pressure sides
are too high.

The pressure returns to nor-
mal is reduced soon after wa-
ter is splashed on condenser.

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 compressor is

stopped, 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 open a lit-

tle compared with the speci-
fication.

↓

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, liquid tank is not so
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: 2012 November

2014 GT-R

HA-8

< SYMPTOM DIAGNOSIS >

REFRIGERATION SYSTEM SYMPTOMS

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 liquid
tank outlet and inlet. Outlet
temperature is extremely
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
as compared with areas
near 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-27, "Refrigerant

Leakages"

There is a big temperature dif-
ference between expansion
valve inlet and outlet while the
valve itself is frosted.

Expansion valve closes a little
compared with the specifica-
tion.

↓

Improper expansion
valve adjustment.

Malfunctioning expansion
valve.

Outlet and inlet may be
clogged.

• Remove foreign particles 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 enough
or is too low.

Evaporator is frozen.

• Check intake sensor circuit.
• Replace compressor.
• Repair evaporator fins.
• Replace evaporator.
• Check the blower motor cir-

cuit.

Gauge indication

Refrigerant cycle

Probable cause

Corrective action

AC356A

AC353A

Revision: 2012 November

2014 GT-R

REFRIGERATION SYSTEM SYMPTOMS

HA-9

< SYMPTOM DIAGNOSIS >

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 particles.
• Cooling is initially okay if wa-

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

• Remove expansion valve and

remove the particles with dry
and compressed air (not shop
air) if due to foreign particles.

• 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: 2012 November

2014 GT-R

HA-10

< SYMPTOM DIAGNOSIS >

COMPRESSOR SYSTEM SYMPTOMS

COMPRESSOR SYSTEM SYMPTOMS

Symptom Table

INFOID:0000000009160171

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.

Judgment result 2: Re-
place 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: 2012 November

2014 GT-R

PRECAUTIONS

HA-11

< PRECAUTION >

PRECAUTION

PRECAUTIONS

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

INFOID:0000000009160172

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 AIR BAG” and “SEAT BELT” of this
Service Manual.

WARNING:

Always observe the following items for preventing accidental activation.
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision that 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 “SRS AIR BAG”.

• 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

WARNING:

Always observe the following items for preventing accidental activation.
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the

ignition ON or engine running, never use air or electric power tools or strike near the sensor(s) with
a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing
serious injury.

• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the

battery, and wait at least 3 minutes before performing any service.

Precautions Necessary for Steering Wheel Rotation After Battery Disconnection

INFOID:0000000009160173

CAUTION:

Comply with the following cautions to prevent any error and malfunction.
• Before removing and installing any control units, first turn the ignition switch to the LOCK position,

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 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.

For vehicle with 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 operation pro-
cedure below before starting the repair operation.

OPERATION PROCEDURE

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

Turn the 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.

Revision: 2012 November

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HA-12

< PRECAUTION >

PRECAUTIONS

Perform the necessary repair operation.

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

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

Precaution for Battery Service

INFOID:0000000009160174

Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
ence between the window edge and the vehicle when the door is opened/closed. During normal operation, the
window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.

Precaution for Procedure without Cowl Top Cover

INFOID:0000000009160175

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

General Precautions

INFOID:0000000009160176

CAUTION:

After finishing servicing, check that all the tools and waste are stored in a customary place.

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

INFOID:0000000009160177

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:

- Cap (seal) immediately 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. Reseal immediately containers of lubricant.

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

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

Damage may result.

CONTAMINATED REFRIGERANT

Take 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.

PIIB3706J

Revision: 2012 November

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PRECAUTIONS

HA-13

< PRECAUTION >

• In case of repairing, recover the refrigerant using only dedicated equipment and containers. Never

recover contaminated refrigerant into the existing service equipment. Contact a local refrigerant prod-
uct retailer for available service if the facility does not have dedicated recovery equipment. This refrigerant
must be disposed of in accordance with all federal and local regulations. In addition, replacement of all
refrigerant system 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:0000000009160178

WARNING:

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

throat. Remove HFC-134a (R-134a) from the A/C system, using certified service equipment meeting
requirements of SAE J-2210 [HFC-134a (R-134a) recycling equipment], or J-2209 [HFC-134a (R-134a)
recovery equipment]. Ventilate 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 recharging equipment to cap-

ture the refrigerant each time an air conditioning system is discharged.

• Wear always 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.
• 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 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 refriger-
ant manufacturers.

Refrigerant Connection

INFOID:0000000009160179

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

ABOUT ONE-TOUCH JOINT

Description

• One-touch joints are pipe joints which do not require tools during piping connection.
• Unlike conventional connection methods using union nuts and flanges, controlling tightening torque at con-

nection point is not necessary.

• Use a disconnector when removing a pipe joint.

Revision: 2012 November

2014 GT-R

HA-14

< PRECAUTION >

PRECAUTIONS

COMPONENT PARTS

FUNCTIONS OF COMPONENT PARTS

NOTE:
• Garter spring cannot be removed from cage of male-side piping.
• Indicator ring remains near piping connection point, however, this is not a malfunction. (This is to check pip-

ing connection during factory assembly.)

REMOVAL

Clean piping connection point, and set a disconnector.

Slide disconnector in axial direction of piping, and stretch garter spring with tapered point of disconnector.

Slide disconnector farther so that inside diameter of garter spring becomes larger than outside diameter of
female-side piping flare. Then male-side piping can be disconnected.

Pipe (Male-side)

• Retains O-rings.
• Retains garter spring in cage (A).

Garter spring

Anchors female-side piping.

Indicator ring

When connection is made properly, this is ejected from male-side piping. (This part is no longer nec-
essary after connection.)

O-ring

Seals connection point. (Not reusable)

Pipe (Female-side)

• Seals connection by compressing O-rings.
• Anchors piping connection using flare (B) and garter spring.

RJIA4383J

SJIA0106E

Revision: 2012 November

2014 GT-R

PRECAUTIONS

HA-15

< PRECAUTION >

INSTALLATION

Clean piping connection points, and insert male-side piping into female-side piping.

Push inserted male-side piping harder so that female-side piping flare stretches garter spring.

Garter spring seats on flare if inside diameter of garter spring becomes larger than outside diameter of
female-side piping flare. Then, it fits in between male-side piping cage and female-side piping flare to
anchor piping connection point.
NOTE:
When garter spring seats on flare, and fits in between male-side piping cage and female-side piping flare,
it clicks.

CAUTION:

• Female-side piping connection point is thin and easy to deform. Slowly insert the male-side pip-

ing straight in axial direction.

• Insert piping securely until a click is heard.
• After piping connection is completed, pull male-side piping by hand to make sure that connec-

tion does not come loose.

O-RING AND REFRIGERANT CONNECTION

SJIA0107E

JSIIA1166ZZ

Revision: 2012 November

2014 GT-R

HA-16

< PRECAUTION >

PRECAUTIONS

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 a wrong O-ring is
installed.

O-Ring Part Numbers and Specifications

WARNING:

Check that 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:

Observe the following when replacing or cleaning refrigerant cycle components.
• Store it in the same way at 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.

• Use always a torque wrench and a back-up wrench when connecting tubes.
• Plug immediately all openings to prevent 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 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.

• Remove thoroughly moisture from the refrigeration system before charging the refrigerant.
• Replace always used O-rings.
• Apply lubricant to circle of the O-rings shown in illustration when connecting tube. Be careful not to

apply lubricant to threaded portion.

• O-ring must be closely attached to the groove portion of tube.
• Be careful not to 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 tube correctly.

: Former type refrigerant connection

: New type refrigerant connection

: One-touch joint

: O-ring size

Connection type

Piping connection point

QTY

O-ring size

One-touch joint

Low-pressure flexible hose to low-pressure pipe 1

High-pressure pipe 1 to high-pressure pipe 2

High-pressure pipe 2 to high-pressure pipe 3

Condenser

Inlet

Outlet

New

Low-pressure flexible hose to low-pressure pipe 2

Low-pressure pipe 1 to expansion valve

High-pressure pipe 3 to expansion valve

Compressor

Inlet

Outlet

Liquid tank

Inlet

Outlet

Former

Refrigerant pressure sensor to liquid tank

Evaporator

Inlet

Outlet

Name

: NISSAN A/C System Oil Type S

Revision: 2012 November

2014 GT-R

Nissan GT-R (2007-2014 year). HEATER & AIR CONDITIONING CONTROL SYSTEM. Service Manual - part 1