Nissan Versa 2010 Owner's Manual

AIR CONDITIONER

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SECTION MTC

MANUAL AIR CONDITIONER

CONTENTS

SERVICE INFORMATION ............................ 3

PRECAUTIONS ................................................... 3

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

SIONER" ...................................................................

Precaution Necessary for Steering Wheel Rota-

tion After Battery Disconnect .....................................

Precaution for Procedure without Cowl Top Cover ......4

Precaution for Working with HFC-134a (R-134a) ......4

General Refrigerant Precaution ................................4

Oil Precaution ............................................................5

Precaution for Refrigerant Connection ......................5

Precaution for Service of Compressor ......................7

Precaution for Service Equipment .............................8

Precaution for Leak Detection Dye ...........................9

PREPARATION ..................................................11

HFC-134a (R-134a) Service Tool and Equipment .... 11

Commercial Service Tool ........................................14

REFRIGERATION SYSTEM ..............................15

Refrigerant Cycle .................................................... 15

Refrigerant System Protection ................................ 15

Component Part Location .......................................16

OIL ......................................................................17

Maintenance of Oil Quantity in Compressor ...........17

AIR CONDITIONER CONTROL .........................19

Control Operation ....................................................19

Discharge Air Flow ..................................................20

System Description .................................................20

TROUBLE DIAGNOSIS .....................................22

CONSULT-III Function (BCM) .................................22

How to Perform Trouble Diagnosis for Quick and

Accurate Repair ......................................................

Component Parts and Harness Connector Loca-

tion ..........................................................................

Schematic ...............................................................26

Wiring Diagram - Heater - ....................................... 27

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Wiring Diagram - A/C,M - ........................................28

Operational Check ...................................................31

Mode Door ...............................................................32

Air Mix Door .............................................................33

Intake Door ..............................................................34

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Front Blower Motor Circuit .......................................34

Magnet Clutch Circuit (If Equipped) .........................38

Insufficient Cooling ..................................................46

Insufficient Heating ..................................................53

Noise .......................................................................54

CONTROLLER ..................................................56

Removal and Installation .........................................56

Disassembly and Assembly .....................................57

THERMO CONTROL AMPLIFIER ....................58

Removal and Installation .........................................58

A/C UNIT ASSEMBLY ......................................59

Removal and Installation .........................................59

Disassembly and Assembly .....................................61

BLOWER MOTOR ............................................63

Removal and Installation .........................................63

INTAKE DOOR ..................................................64

Intake Door Cable Adjustment .................................64

AIR MIX DOOR .................................................65

Air Mix Door Cable Adjustment ...............................65

MODE DOOR ....................................................66

Mode Door Cable Adjustment .................................66

BLOWER FAN RESISTOR ...............................67

Removal and Installation .........................................67

HEATER CORE .................................................68

Removal and Installation .........................................68

AIR CONDITIONER FILTER .............................69

Removal and Installation .........................................69

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DUCTS AND GRILLES ...................................... 70

Removal and Installation ........................................ 70

REFRIGERANT LINES ...................................... 75

HFC-134a (R-134a) Service Procedure ................. 75

Component ............................................................. 77

Removal and Installation of Compressor -

HR16DE .................................................................

Removal and Installation of Compressor -

MR18DE .................................................................

Removal and Installation for Compressor Clutch -

Type 1 .....................................................................

Removal and Installation for Compressor Clutch -

Type 2 .....................................................................

Removal and Installation of Low-Pressure Flexi-

ble Hose .................................................................

Removal and Installation of High-Pressure Flexi-

ble Hose .................................................................

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Removal and Installation of High-Pressure Pipe .... 89

Removal and Installation of Refrigerant Pressure

Sensor .....................................................................

Removal and Installation of Condenser .................. 90

Removal and Installation of Liquid Tank ................. 90

Removal and Installation of Evaporator .................. 91

Removal and Installation of Expansion Valve ......... 92

Checking of Refrigerant Leaks ................................ 92

Checking System for Leaks Using the Fluorescent

Leak Detector ..........................................................

Dye Injection ........................................................... 93

Electronic Refrigerant Leak Detector ...................... 93

SERVICE DATA AND SPECIFICATIONS

(SDS) .................................................................

Compressor ............................................................ 96

Oil ............................................................................ 96

Refrigerant .............................................................. 96

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< SERVICE INFORMATION >

PRECAUTIONS

SERVICE INFORMATION

PRECAUTIONS

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

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 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 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 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 WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni­tion ON or engine running, DO NOT 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.

INFOID:0000000006022079

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Precaution Necessary for Steering Wheel Rotation After Battery Disconnect

INFOID:0000000005396473

NOTE:

• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS­TEM).

• Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK″ position.

• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.

For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech­anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.

OPERATION PROCEDURE

1. Connect both battery cables.

NOTE:

Supply power using jumper cables if battery is discharged.

2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC″ position. At this time, the

steering lock will be released.

3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be

rotated.

4. Perform the necessary repair operation.

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5. When the repair work is completed, return the ignition switch to the ″LOCK″ position before connecting

the battery cables. (At this time, the steering lock mechanism will engage.)

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

Precaution for Procedure without Cowl Top Cover INFOID:0000000005396474

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

PIIB3706J

Precaution for Working with HFC-134a (R-134a) INFOID:0000000005396475

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 a compressor mal­function is likely to occur.

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

• The specified HFC-134a (R-134a) oil 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 connecting the components. Connect all refrigerant loop components as quickly as possible
to minimize the entry of moisture into system.

- Only use the specified oil from a sealed container. Immediately reseal containers of oil. Without
proper sealing, oil will become moisture saturated and should not be used.

- Avoid breathing A/C refrigerant and oil vapor or mist. Exposure may irritate eyes, nose and throat.
Use only approved recovery/recycling equipment to discharge HFC-134a (R-134a) refrigerant. If acci­dental system discharge occurs, ventilate work area before resuming service. Additional health and
safety information may be obtained from refrigerant and oil manufacturers.

- Do not allow A/C oil to come in contact with styrofoam parts. Damage may result.

General Refrigerant Precaution INFOID:0000000005396476

WARNING:

• Avoid breathing A/C refrigerant and oil vapor or mist. Exposure may irritate eyes, nose and throat.
Use only approved recovery/recycling equipment to discharge HFC-134a (R-134a) refrigerant. If acci­dental system discharge occurs, ventilate work area before resuming service. Additional health and
safety information may be obtained from refrigerant and oil manufacturers.

• 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 (126° 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 condition­ing systems with compressed air during repair. Some mixtures of air and HFC-134a (R-134a) have

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been shown to be combustible at elevated pressures. These mixtures, if ignited, may cause injury or
property damage. Additional health and safety information may be obtained from refrigerant manu­facturers.

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Oil Precaution INFOID:000 0000005396477

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

• The specified HFC-134a (R-134a) oil 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 con­necting the components. Connect all refrigerant loop components as quickly as possible to minimize the
entry of moisture into system.

- Only use the specified oil from a sealed container. Immediately reseal containers of oil. Without proper seal­ing, oil will become moisture saturated and should not be used.

• Avoid breathing A/C refrigerant and oil vapor or mist. Exposure may irritate eyes, nose and throat.
Use only approved recovery/recycling equipment to discharge HFC-134a (R-134a) refrigerant. If accidental
system discharge occurs, ventilate work area before resuming service. Additional health and safety informa­tion may be obtained from refrigerant and oil manufacturers.

• Do not allow A/C oil to come in contact with styrofoam parts. Damage may result.

Precaution for Refrigerant Connection INFOID:0000000005396478

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

• Expansion valve to evaporator

• Refrigerant pressure sensor to condenser

FEATURES OF NEW TYPE REFRIGERANT CONNECTION

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SHA815E

• The O-ring has been relocated. It has also been provided with a groove for proper installation. This elimi­nates the chance of the O-ring being caught in, or damaged by, the mating part. The sealing direction of the
O-ring is now set vertically in relation to the contacting surface of the mating part to improve sealing charac­teristics.

• The reaction force of the O-ring will not occur in the direction that causes the joint to pull out, thereby facili­tating piping connections.

O-RING AND REFRIGERANT CONNECTION

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PRECAUTIONS

MR18DE - TYPE 1 and HR16DE

MR18DE - TYPE 2

SJIA0697E

SJIA1327E

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:

The new and former refrigerant connections use different O-ring configurations. Do not confuse O­rings since they are not interchangeable. If a wrong O-ring is installed, refrigerant will leak at, or
around, the connection.

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O-Ring Part Numbers and Specifications

Connection type Piping connection point Part number QTY O-ring size

Condenser to high-pressure flexible hose 92472 N8210 1 12

Condenser to high-pressure pipe 92471 N8210 1 8

Low-pressure flexible hose to expansion valve 92473 N8210 1 16

New

Former

CAUTION:

When replacing or cleaning refrigerant cycle components, observe the following.

• When the compressor is removed, store it in the same position as it is when installed on the vehicle.
Doing so will cause oil 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 opera­tion. 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 the specified A/C oil to circle of the O-rings. Be careful not to apply oil
to threaded portion. Refer to MTC-96, "

• 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, perform leak test and make sure that there is no leakage from connections.
When the refrigerant leaking point is found, disconnect that line and replace the O-ring. Then tighten
connections of seal seat to the specified torque.

High-pressure pipe to expansion valve 92471 N8210 1 8

Compressor to low-pressure flexible hose 92474 N8210 1 19

Compressor to high-pressure flexible hose 92472 N8210 1 12

Liquid tank to condenser pipe

Refrigerant pressure sensor to condenser J2476 89956 1 10

Expansion valve to evaporator

Inlet

Outlet 1

Inlet 92471 N8200 2 12

Outlet 92473 N8200 2 16

92471 N8210

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Precaution for Service of Compressor INFOID:0000000005396479

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

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• 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 Oil Quantity in Compressor”

exactly. Refer to MTC-17, "

• Keep friction surfaces between clutch and pulley clean. If the surface is contaminated, with oil, 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 oil 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.

Maintenance of Oil Quantity in Compressor".

Precaution for Service Equipment INFOID:0000000005396480

RECOVERY/RECYCLING EQUIPMENT

Be certain to follow the manufacturer’s 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 oil contained inside the vacuum pump is not compatible with the
specified oil for HFC-134a (R-134a) A/C systems. The vent side of
the vacuum pump is exposed to atmospheric pressure. So the vac­uum pump oil 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 hose­to-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 manual
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’s
ability to pull a deep vacuum and are not recommended.

RHA270DA

MANIFOLD GAUGE SET

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

SHA533D

SERVICE HOSES

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Be certain that the service hoses display the markings described
(colored hose with black stripe). All hoses must include positive shut­off devices (either manual or automatic) near the end of the hoses
opposite 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 will
not properly connect to the CFC-12 (R-12) system. However, if an
improper connection is attempted, discharging and contamination
may occur.

Shut-off valve rotation A/C service valve

Clockwise Open

Counterclockwise Close

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REFRIGERANT WEIGHT SCALE

Verify that no refrigerant other than HFC-134a (R-134a) and speci­fied oils have been used with the scale. If the scale controls refriger­ant flow electronically, the hose fitting must be 1/2″-16 ACME.

RHA274D

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.

Precaution for Leak Detection Dye INFOID:0000000005396481

• 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 fluo­rescent dye leak detector should be used in conjunction with an electronic refrigerant leak detector to pin­point 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.

• 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.

• 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.

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• 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 HFC­134a (R-134a) leak detection dye in CFC-12 (R-12) A/C system or CFC-12 (R-12) leak detector dye in HFC­134a (R-134a) A/C system 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 LABEL FOR VEHICLE

Vehicles with factory installed fluorescent dye have an identification label on the front underside of the hood.

NOTE:

• Vehicles with factory installed fluorescent dye have a green label.

• Vehicles without factory installed fluorescent dye have a blue label.

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PREPARATION

PREPARATION

HFC-134a (R-134a) Service Tool and Equipment INFOID:0000000005396482

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

Tool number
(Kent-Moore No.)
Tool name

HFC-134a (R-134a)
(—)
Refrigerant

S-NT196

—
(—)
NISSAN A/C System Oil Type S

Description

Container color: Light blue
Container marking: HFC-134a (R­134a)
Fitting size: Thread size

• large container 1/2”-16 ACME

Type: Poly Alkylene glycol oil (PAG),
type S
Application: HFC-134a (R-134a) vari­able displacement swash plate com­pressors (NISSAN only)

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NISSAN A/C System Oil Type R

KV991J0130
(ACR2005-NI)
ACR5 A/C Service Center

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(J-41995)
Electronic refrigerant leak detector

S-NT197

S-NT197

WJIA0293E

Type: Poly Alkylene glycol oil (PAG),
type R
Application: HFC-134a (R-134a) vane
rotary compressors (NISSAN only)

Refrigerant recovery, recycling and re­charging

Checking for refrigerant leaks
Power supply: DC 12V (battery termi­nal)

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AHA281A

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PREPARATION

Tool number
(Kent-Moore No.)
Tool name

—
(J-43926)
Refrigerant dye leak detection kit
Kit includes:
(J-42220)
UV lamp and UV safety goggles
(J-41459)
Refrigerant dye injector
(J-41447)
Quantity 24, 1/4 ounce bottles of
HFC-134a (R-134a) fluorescent
leak detection dye
(J-43872)
Refrigerant dye cleaner

—
(J-42220)
Fluorescent dye leak detector

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

Description

Leak detection dye
Power supply: DC 12V (battery termi­nal)

ZHA200H

Checking for refrigerant leaks when flu­orescent dye is installed in A/C system.
Includes: UV lamp and UV safety gog­gles
Power supply: DC 12V (battery termi­nal)

SHA438F

Application: For HFC-134a (R-134a)
PAG o i l
Container: 1/4 ounce (7.4cc) 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 bot­tles

—
(J-43872)
Refrigerant dye cleaner

—
(J-39183-C)
Manifold gauge set (with hoses
and couplers)

SHA439F

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

SHA440F

For cleaning dye spills.

SHA441F

Identification:

• The gauge face indicates R-134a.
Fitting size: Thread size

• 1/2”-16 ACME

RJIA0196E

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PREPARATION

Tool number
(Kent-Moore No.)
Tool name

Service hoses:

• (J-39500-72B)
High side hose

• (J-39500-72R)
Low side hose

• (J-39500-72Y)
Utility hose

Service couplers:

• (J-39500-20A)
High side coupler

• (J-39500-24A)
Low side coupler

—

(J-39699)
Refrigerant weight scale

S-NT201

S-NT202

Description

Hose colors:

• Low side hose: Blue with black stripe

• High 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

Hose fitting to service hose:

• M14 x 1.5 fitting is optional or perma­nently attached.

For measuring of refrigerant
Fitting size - thread size:

• 1/2” - 16 ACME

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(J-39649)
Vac u u m pump
(Including the isolator valve)

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( J-46534 )
Trim tool set

—
(J-41425-NIS)
Aluminum tube repair kit

S-NT200

S-NT203

AWJIA0483ZZ

ALIIA0390ZZ

Capacity:

• Air displacement: 4 CFM

• Micron rating: 20 microns

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

• 1/2”-16 ACME

For removing trim

Repairing leaks in A/C tubes

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Revision: January 2010 2010 Versa

MTC-13

< SERVICE INFORMATION >

PREPARATION

Tool number
(Kent-Moore No.)
Tool name

—
(J-38873-A)
Pulley installer

—
(J-44614)
Clutch disc holding tool

Commercial Service Tool

(Kent-Moore No.)
Tool name

(J-41810-NI)
Refrigerant identifier equipment (R­134a)

Description

Installing pulley

LHA171

Clutch disc holding tool

WHA230

INFOID:0000000005396483

Description

For checking refrigerant purity and
system contamination

RJIA0197E

Power tool Loosening bolts and nuts

PIIB1407E

Revision: January 2010 2010 Versa

MTC-14

< SERVICE INFORMATION >

REFRIGERATION SYSTEM

REFRIGERATION SYSTEM

Refrigerant Cycle INFOID:0000000005396484

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 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 temperature is controlled by the compressor to prevent freeze up.

Refrigerant System Protection INFOID:0000000005396485

A

B

C

D

E

F

G

H

RJIA0849E

REFRIGERANT PRESSURE SENSOR

The refrigerant system is protected against excessively high or low pressures by the refrigerant pressure sen­sor, located on the condenser. If the system pressure rises above, or falls below the specifications, the refrig­erant 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 (27.46 bar, 28.0 kg/cm

2

about 134 kPa (1.34 bar, 1.4 kg/cm

, 20 psi).

2

, 398 psi), or below

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 3.8 MPa (38 bar,

38.76 kg/cm
erant into the atmosphere.

2

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

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Revision: January 2010 2010 Versa

MTC-15

< SERVICE INFORMATION >

REFRIGERATION SYSTEM

Component Part Location

INFOID:0000000005396486

SJIA0698E

Revision: January 2010 2010 Versa

MTC-16

< SERVICE INFORMATION >

OIL

OIL

Maintenance of Oil Quantity in Compressor INFOID:0000000005396487

The oil in the compressor circulates through the system with the refrigerant. Add oil to compressor when
replacing any component or after a large refrigerant leakage occurred. It is important to maintain the specified
amount.
If oil quantity is not maintained properly, the following malfunctions may result:

• Lack of oil: May lead to a seized compressor.

• Excessive oil: Inadequate cooling (thermal exchange interference)

OIL

TYPE 1 Compressor (CR-10) : NISSAN A/C System Oil Type R

TYPE 2 Compressor (CSV511) : NISSAN A/C System Oil Type S

OIL ADJUSTING PROCEDURE FOR COMPONENTS REPLACEMENT EXCEPT COMPRESSOR

After replacing any of the following major components, add the correct amount of oil to the system.

Amount Of Oil To Be Added

Oil to be added to system

Part replaced

Evaporator 35 (1.2, 1.2) -

Condenser 15 (0.5, 0.5) -

Liquid tank 5 (0.2, 0.2) -

In case of refrigerant leak

*1: If refrigerant leak is small, no addition of oil is needed.

Amount of oil

m (US fl oz, Imp fl oz)

30 (1.0, 1.1) Large leak

None *1

Remarks

Small leak

*1

A

B

C

D

E

F

G

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OIL ADJUSTING PROCEDURE FOR COMPRESSOR REPLACEMENT

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Revision: January 2010 2010 Versa

MTC-17

< SERVICE INFORMATION >

OIL

WJIA1716E

1. New compressor 2. Old compressor 3. Recovery/recycling equipment

4. Measuring cup X 5. Measuring cup Y 6. New oil

A. Drain oil from the new compressor

into clean container

D. Install new oil equal to recorded

amounts in measuring cups X plus Y

B. Record amount of oil recovered C.

Add an additional 5 m (0.2 US fl oz,

0.2 Imp fl oz) of new oil when replacing
liquid tank

1. Before connecting recovery/recycling equipment to vehicle, check recovery/recycling equipment gauges.
No refrigerant pressure should be displayed. If NG, recover refrigerant from equipment lines.

2. Discharge refrigerant into the refrigerant recovery/recycling equipment. Measure oil discharged into the
recovery/recycling equipment.

3. Drain the oil from the old (removed) compressor into a graduated container and recover the amount of oil
drained.

4. Drain the oil from the new compressor into a separate, clean container.

5. Measure an amount of new oil installed equal to amount drained from old compressor. Add this oil to new
compressor through the suction port opening.

6. Measure an amount of new oil equal to the amount recovered during discharging. Add this oil to new com­pressor through the suction port opening.

7. If the liquid tank also needs to be replaced, add another 5 m (0.2 US fl oz, 0.2 Imp fl oz.) of oil at this
time.
Add this 5 m (0.2 US fl oz, 0.2 Imp fl oz.) of oil only when replacing the compressor.

Revision: January 2010 2010 Versa

MTC-18

< SERVICE INFORMATION >

AIR CONDITIONER CONTROL

AIR CONDITIONER CONTROL

Control Operation INFOID:0000000005396488

WJIA2189E

1. Intake door lever 2. Mode door control dial 3. Rear window defogger switch

4. Blower control dial 5. A/C switch (if equipped) 6. Temperature control dial

A

B

C

D

E

F

G

H

BLOWER CONTROL DIAL

This dial turns the fan ON and OFF, and controls fan speed.

TEMPERATURE CONTROL DIAL

This dial allows you to adjust the temperature of the discharge air.

MODE DOOR CONTROL DIAL

This dial controls the outlet air flow.

INTAKE DOOR LEVER

• Recirculation (REC) position: Interior air is recirculated inside the vehicle.

• Fresh (FRE) position: Outside air is drawn into the passenger compartment.

REAR WINDOW DEFOGGER SWITCH

When illumination is ON, rear window is defogged.

A/C SWITCH (IF EQUIPPED)

The A/C switch controls the air conditioner system. When the switch is depressed with the fan ON, the com­pressor will turn ON. The indicator lamp also illuminates.

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MTC-19

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< SERVICE INFORMATION >

AIR CONDITIONER CONTROL

Discharge Air Flow

Mode door position

INFOID:0000000005396489

WJIA2190E

Air outlet/distribution

Vent Foot Defroster

100% — —

56% 44% —

16% 64% 20%

16% 53% 31%

17% — 83%

Airflow always present at driver and passenger side demisters

System Description INFOID:0000000005396490

SWITCHES AND THEIR CONTROL FUNCTION

WJIA2249E

Revision: January 2010 2010 Versa

MTC-20

< SERVICE INFORMATION >

AIR CONDITIONER CONTROL

A

B

C

D

E

WJIA2234E

F

G

H

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MTC-21

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TROUBLE DIAGNOSIS

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

CONSULT-III Function (BCM) INFOID:0000000005598079

CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.

BCM diagnostic

test item

Inspection by part

Diagnostic mode Content

Supports inspections and adjustments. Commands are transmitted to the BCM for

WORK SUPPORT

DATA MONITOR Displays BCM input/output data in real time.

ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.

SELF-DIAG RESULTS Displays BCM self-diagnosis results.

CAN DIAG SUPPORT

MNTR

ECU PART NUMBER BCM part number can be read.

CONFIGURATION Performs BCM configuration read/write functions.

setting the status suitable for required operation, input/output signals are received
from the BCM and received data is displayed.

The results of transmit/receive diagnosis of CAN communication can be read.

ITEMS OF EACH PART

NOTE:

CONSULT-III will only display systems the vehicle possesses.

Diagnostic test mode (Inspection by part)

System and item

BCM BCM ××× × ×

Power door lock sys­tem

Rear defogger

Warning chime BUZZER ××

Room lamp timer INT LAMP ×××

Remote keyless entry
system

Headlamp HEAD LAMP ×××

Wiper WIPER ×××

Turn signal lamp
Hazard lamp

Blower fan switch sig­nal
Air conditioner switch
signal

Intelligent Key

Combination switch COMB SW ×

NVIS (NATS) IMMU ××

Interior lamp battery
saver

Back door/Trunk TRUNK ××

Theft alarm THEFT ALARM ×××

CONSULT-III dis-

play

DOOR LOCK ×××

REAR DEFOG­GER

MULTI REMOTE
ENT

FLASHER ××

AIR CONDITION­ER

INTELLIGENT
KEY

BATTERY SAV­ER

WORK

SUPPORT

×××

×××

SELF−

DIAG RE-

SULTS

CAN DIAG
SUPPORT

MNTR

DATA

MONITOR

××

×

×

ECU

PAR T

NUMBER

AC-

TIVE

TEST

CON-

FIGU-

RATION

Revision: January 2010 2010 Versa

MTC-22

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

Diagnostic test mode (Inspection by part)

System and item

Retained accessory
power control

Oil pressure switch SIGNAL BUFFER ××

Low tire pressure moni­tor

Panic alarm PANIC ALARM ×

CONSULT-III dis-

play

RETAINED PWR ×××

AIR PRESSURE
MONITOR

WORK

SUPPORT

×× × ×

SELF−

DIAG RE-

SULTS

CAN DIAG
SUPPORT

MNTR

DATA

MONITOR

ECU

PAR T

NUMBER

AC-

TIVE

TEST

CON-

FIGU-

RATION

WORK SUPPORT

Display Item List

Item Description

RESET SETTING VALUE Return a value set with WORK SUPPORT of each system to a default value in factory shipment.

How to Perform Trouble Diagnosis for Quick and Accurate Repair INFOID:0000000005396492

WORK FLOW

A

B

C

D

E

F

G

H

SHA900E

*1 MTC-31, "Operational Check"

SYMPTOM TABLE

Symptom Reference Page

Air outlet does not change. Go to Trouble Diagnosis Procedure for Mode Door. MTC-32

Discharge air temperature does not
change.

Intake door does not change. Go to Trouble Diagnosis Procedure for Intake Door. MTC-34

Blower motor operation is malfunctioning. Go to Trouble Diagnosis Procedure for Blower Motor. MTC-34

Magnet clutch does not engage in A/C, de­frost/foot, or defrost mode.

Insufficient cooling Go to Trouble Diagnosis Procedure for Insufficient Cooling. MTC-46

Insufficient heating Go to Trouble Diagnosis Procedure for Insufficient Heating. MTC-53

Noise Go to Trouble Diagnosis Procedure for Noise. MTC-54

Go to Trouble Diagnosis Procedure for Air Mix Door. MTC-33

Go to Trouble Diagnosis Procedure for Magnet Clutch. MTC-38

Component Parts and Harness Connector Location INFOID:0000000005396493

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ENGINE COMPARTMENT

Revision: January 2010 2010 Versa

MTC-23

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

1. Refrigerant pressure sensor E17 (if
equipped)

PASSENGER COMPARTMENT

WJIA2235E

2. A/C compressor F3 (if equipped)

Revision: January 2010 2010 Versa

MTC-24

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

A

B

C

D

E

F

G

WJIA2302E

1. Front air control M33 2. Front blower motor resistor M151 3. Thermo control amp. jumper connec­tor (with CVT), (if equipped)

4. Thermo control amp. M42 (without

CVT), (if equipped)

5. Front blower motor M62 6. Defrost A/C switch M41 (located on
back side of front air control)

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Revision: January 2010 2010 Versa

MTC-25

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

Schematic

INFOID:0000000005396494

AAIWA0053GB

Revision: January 2010 2010 Versa

MTC-26

TROUBLE DIAGNOSIS

< SERVICE INFORMATION >

Wiring Diagram - Heater - INFOID:0000000005396495

WITHOUT A/C

A

B

C

D

E

F

G

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WJWA0485E

Revision: January 2010 2010 Versa

MTC-27

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< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

Wiring Diagram - A/C,M -

INFOID:0000000005396496

WJWA0484E

Revision: January 2010 2010 Versa

MTC-28

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

A

B

C

D

E

F

G

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AAIWA0052GB

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MTC-29

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< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

WJWA0488E

Revision: January 2010 2010 Versa

MTC-30

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

A

B

C

D

E

F

G

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LJWA0021E

Operational Check INFOID:0000000005396497

The purpose of the operational check is to confirm that the system operates properly.

Conditions : Engine running at normal operating temperature

CHECKING BLOWER

Revision: January 2010 2010 Versa

MTC-31

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TROUBLE DIAGNOSIS

< SERVICE INFORMATION >

1. Turn blower control dial clockwise to "1" position. Blower should operate on low speed.

2. Turn blower control dial clockwise to "2" position, and continue checking blower speed until all speeds are
checked.

3. Leave blower on Maximum speed.

If NG, go to trouble diagnosis procedure for MTC-34, "
If OK, continue the check.

CHECKING DISCHARGE AIR

1. Turn mode door control dial to each position.

Front Blower Motor Circuit".

2. Confirm that discharge air comes out according to the air distribution table. Refer to MTC-20, "

Air Flow".

If NG, go to trouble diagnosis procedure for MTC-32, "
If OK, continue the check.

Mode Door".

CHECKING RECIRCULATION

1. Set intake door lever to REC position.

2. Operate intake door lever to FRE position.

3. Listen for intake door position change (you should hear blower sound change slightly).

If NG, go to trouble diagnosis procedure for MTC-34, "
If OK, continue the check.

Intake Door".

CHECKING TEMPERATURE DECREASE

1. Turn temperature control dial counterclockwise to full cold position.

2. Check for cold air at discharge air outlets.

If NG, go to trouble diagnosis procedure for MTC-46, "
If OK, continue the check.

Insufficient Cooling".

CHECKING TEMPERATURE INCREASE

1. Turn temperature control dial clockwise to full hot position.

2. Check for hot air at discharge air outlets.

If NG, go to trouble diagnosis procedure for MTC-53, "
If OK, continue the check.

Insufficient Heating".

Discharge

CHECKING A/C SWITCH (IF EQUIPPED)

1. Turn fan control dial to the desired (1 to 4 speed) position.

2. Press A/C switch.

3. A/C switch indicator will turn ON.

• Confirm that the compressor clutch engages (sound or visual inspection).

If NG, go to trouble diagnosis procedure for MTC-38, "
If OK, continue the check.

Magnet Clutch Circuit (If Equipped)".

CHECKING DEFROST A/C SWITCH (IF EQUIPPED)

1. Turn fan control dial to the desired (1 to 4 speed) position.

2. Turn mode dial to ( ) DEF.

3. Confirm that the compressor clutch engages (sound or visual inspection) and the A/C switch indicator illu­minates.

If NG, go to trouble diagnosis procedure for MTC-38, "
If all operational checks are OK (symptom cannot be duplicated), go to MTC-23, "

Diagnosis for Quick and Accurate Repair" and perform tests as outlined. If symptom appears, refer to MTC-23,
"How to Perform Trouble Diagnosis for Quick and Accurate Repair" and perform applicable trouble diagnosis

procedures.

Magnet Clutch Circuit (If Equipped)".

How to Perform Trouble

Mode Door INFOID:0000000005396498

SYMPTOM: Air outlet does not change.

INSPECTION FLOW

Revision: January 2010 2010 Versa

MTC-32

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

1.CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - DISCHARGE AIR

1. Rotate the mode door control dial to each position.

2. Confirm that discharge air comes out according to the air distribution table. Refer to MTC-20, "

Air Flow".

NOTE:

Confirm that the compressor clutch (with A/C) is engaged (visual inspection) when DEF ( ) or D/F ( )
is selected.

Can a symptom be duplicated?

YES >> GO TO 3.
NO >> GO TO 2.

Discharge

2.PERFORM COMPLETE OPERATIONAL CHECK

Perform a complete operational check and check for any symptoms. Refer to MTC-31, "
Can a symptom be duplicated?

YES >> Refer to MTC-23, "How to Perform Trouble Diagnosis for Quick and Accurate Repair".
NO >> System OK.

Operational Check".

3.CHECK FOR SERVICE BULLETINS

Check for any service bulletins.

>> GO TO 4.

4.CHECK MODE DOOR CONTROL CABLE

Check and verify mode door mechanism for smooth operation in each mode.
OK or NG

OK >> If the symptom still exists, perform a complete operational check and check for other symptoms.

Refer to MTC-31, "

Trouble Diagnosis for Quick and Accurate Repair" .

NG >> Repair or adjust mode door control cable. Refer to MTC-66, "

Air Mix Door INFOID:0000000005396499

Operational Check". If other symptoms exist, refer to MTC-23, "How to Perform

Mode Door Cable Adjustment".

A

B

C

D

E

F

G

H

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SYMPTOM: Air mix door does not change.

INSPECTION FLOW

1.CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - TEMPERATURE INCREASE

1. Turn the temperature control dial clockwise until maximum heat.

2. Check for hot air at discharge air outlets.

>> GO TO 2.

2.CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - TEMPERATURE DECREASE

1. Turn the temperature control dial counterclockwise until maximum cold.

2. Check for cold air at discharge air outlets.

Can a symptom be duplicated?

YES >> GO TO 4.
NO >> GO TO 3.

3.PERFORM COMPLETE OPERATIONAL CHECK

Perform a complete operational check and check for any symptoms. Refer to MTC-31, "
Can a symptom be duplicated?

YES >> Refer to MTC-23, "How to Perform Trouble Diagnosis for Quick and Accurate Repair".
NO >> System OK.

Operational Check".

4.CHECK FOR SERVICE BULLETINS

Check for any service bulletins.

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Revision: January 2010 2010 Versa

MTC-33

TROUBLE DIAGNOSIS

< SERVICE INFORMATION >

>> GO TO 5.

5.CHECK AIR MIX DOOR CONTROL LINKAGE

Check and verify air mix door mechanism for smooth operation.
OK or NG

OK >> If the symptom still exists, perform a complete operational check. Refer to MTC-31, "Operational

Check" If other symptoms exist, refer to MTC-23, "How to Perform Trouble Diagnosis for Quick
and Accurate Repair".

NG >> Repair or adjust air mix door control linkage. Refer to MTC-65, "

Air Mix Door Cable Adjustment".

Intake Door INFOID:0000000005396500

SYMPTOM:

• Intake door does not change.

INSPECTION FLOW

1.CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - REC ( )

1. Slide the intake door lever to the REC ( ) position.

2. Turn the blower motor to maximum speed.

3. Slide the intake door lever to the FRE position.

4. Listen for intake door position change (you should hear blower sound change slightly).
Can a symptom be duplicated?

YES >> GO TO 3.
NO >> GO TO 2.

2.PERFORM COMPLETE OPERATIONAL CHECK

Perform a complete operational check and check for any symptoms. Refer to MTC-31, "
Can a symptom be duplicated?

YES >> Refer to MTC-23, "How to Perform Trouble Diagnosis for Quick and Accurate Repair" .
NO >> System OK.

Operational Check" .

3.CHECK FOR SERVICE BULLETINS

Check for any service bulletins.

>> GO TO 4.

4.CHECK INTAKE DOOR CONTROL LINKAGE

Check intake door control linkage mechanism for smooth operation.
OK or NG

OK >> If the symptom still exists, perform a complete operational check. Refer to MTC-31, "Operational

Check" . If other symptoms exist, refer to MTC-23, "How to Perform Trouble Diagnosis for Quick
and Accurate Repair" .

NG >> Repair or adjust control linkage. Refer to MTC-64, "

Intake Door Cable Adjustment" .

Front Blower Motor Circuit INFOID:0000000005396501

SYMPTOM: Front blower motor operation is malfunctioning.

INSPECTION FLOW

1.CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - FRONT BLOWER

1. Turn blower control dial to "1" position. Blower should operate on low speed.

2. Turn the blower control dial to "2" position, and continue checking blower speed until all speeds are
checked.

Can the symptom be duplicated?

YES >> GO TO 3.

Revision: January 2010 2010 Versa

MTC-34

TROUBLE DIAGNOSIS

< SERVICE INFORMATION >

NO >> GO TO 2.

2.PERFORM COMPLETE OPERATIONAL CHECK

A

Perform a complete operational check and check for any symptoms. Refer to MTC-31, "
Can a symptom be duplicated?

YES >> Refer to MTC-23, "How to Perform Trouble Diagnosis for Quick and Accurate Repair".
NO >> System OK.

Operational Check".

3.CHECK FOR SERVICE BULLETINS

Check for any service bulletins.

>> GO TO 4.

4.CHECK FRONT BLOWER MOTOR CIRCUIT

Check front blower motor circuit. Refer to "DIAGNOSTIC PROCEDURE FOR FRONT BLOWER MOTOR" .
OK or NG

OK >> If the symptom still exists, perform a complete operational check. Refer to MTC-31, "Operational

Check". If other symptoms exist, refer to MTC-23, "How to Perform Trouble Diagnosis for Quick
and Accurate Repair".

NG >> Repair as necessary.

DIAGNOSTIC PROCEDURE FOR FRONT BLOWER MOTOR

SYMPTOM: Blower motor operation is malfunctioning.

B

C

D

E

F

G

H

1.CHECK FRONT BLOWER MOTOR OPERATION

1. Turn ignition switch ON.

2. Check front blower motor operation at each fan speed.
OK or NG

OK >> Inspection End.
NG >> • Front blower motor does not operate at any speed, GO TO 2.

• Front blower motor does not operate at one or more of the four speeds, GO TO 10.

2.CHECK POWER SUPPLY FOR FRONT BLOWER MOTOR

1. Turn ignition switch OFF.

2. Disconnect front blower motor connector.

3. Turn ignition switch ON.

4. Check voltage between front blower motor harness connector
M62 terminal 1 and ground.

Te rm in al s

(+) (−)

Connector Terminal

Front blower

motor: M62

OK or NG

OK >> GO TO 6.

1 Battery voltage

Ground

Voltage

(Approx.)

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Revision: January 2010 2010 Versa

MTC-35

TROUBLE DIAGNOSIS

< SERVICE INFORMATION >

NG >> Check power supply circuit and 15A fuses [Nos. 15 and 17, located in the fuse block (J/B)].

Refer to PG-4, "

• If fuses are OK, reinstall fuses and GO TO 3.

• If fuses are NG, replace fuse and check harness for short circuit. Repair or replace if necessary.

Schematic".

3.CHECK BLOWER MOTOR RELAY POWER SUPPLY CIRCUITS

1. Turn ignition switch OFF.

2. Disconnect blower motor relay connector.

3. Turn ignition switch ON.

4. Check voltage between blower motor relay harness connector J­1 terminal 1, 5 and ground.

1 - Ground Battery voltage should exist.

5 - Ground Battery voltage should exist.

OK or NG

OK >> GO TO 4.
NG >> Repair harness or connector.

WJIA1783E

4.CHECK BLOWER MOTOR RELAY (SWITCH SIDE) CIRCUIT FOR OPEN

1. Turn ignition switch OFF.

2. Check continuity between blower motor relay harness connector
J-1 (A) terminal 3 and front blower motor harness connector
M62 (B) terminal 1.

Continuity should exist.

OK or NG

OK >> GO TO 5.
NG >> Repair harness or connector.

5.CHECK BLOWER MOTOR RELAY GROUND CIRCUIT

Check continuity between blower motor relay harness connector J-1
terminal 2 and ground.

Continuity should exist.

OK or NG

OK >> Replace blower motor relay.
NG >> Repair harness or connector.

6.CHECK FRONT BLOWER MOTOR

Check continuity between front blower motor terminals 1 and 2.

NOTE:

Ensure that there are no foreign particles inside the A/C unit assem­bly for a smooth rotation of the front blower motor.

WJIA2263E

WJIA2264E

1 - 2 : Continuity should exist.

OK or NG

OK >> GO TO 7.
NG >> Replace front blower motor. Refer to MTC-63, "

and Installation".

Removal

WJIA2230E

7.CHECK CIRCUIT CONTINUITY BETWEEN FRONT BLOWER MOTOR AND FRONT AIR CONTROL

Revision: January 2010 2010 Versa

MTC-36

TROUBLE DIAGNOSIS

< SERVICE INFORMATION >

1. Disconnect front air control connector.

2. Check continuity between front blower motor harness connector
M62 (A) terminal 2 and front air control harness connector M33
(B) terminal 13.

A

2 - 13 : Continuity should exist.

OK or NG

OK >> GO TO 8.
NG >> Repair harness or connector.

8.CHECK FAN SWITCH

Check continuity between front air control terminal 9 and 10, 11, 12,
13, 14.

Terminals Condition Continuity

14 Blower control dial: OFF

10 Blower control dial: 1-speed

9

11 Blower control dial: 2-speed

12 Blower control dial: 3-speed

13 Blower control dial: 4-speed

Yes

OK or NG

OK >> GO TO 9.
NG >> Replace front air control. Refer to MTC-59, "

Removal and Installation".

9.CHECK FAN SWITCH GROUND CIRCUIT

B

C

AWIIA0339ZZ

D

E

F

G

SJIA0732E

H

I

Check continuity between front air control harness connector M33
terminal 9 and ground.

Continuity should exist.

OK or NG

OK >> Inspection End.
NG >> Repair harness or connector.

SJIA0734E

10.CHECK CIRCUIT CONTINUITY BETWEEN FRONT AIR CONTROL AND FRONT BLOWER MOTOR

RESISTOR

1. Turn ignition switch OFF.

2. Disconnect front blower motor resistor and front air control con­nectors.

3. Check continuity between front air control harness connector
M33 (A) terminals and front blower motor resistor harness con­nector M6 (B) terminals.

AB

Connector Terminal Connector Terminal

10

Front air control:

M33

11 2

12 3

13 4

Front blower

motor resistor:

M6

OK or NG

1

Continuity

SJIA0733E

Yes

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Revision: January 2010 2010 Versa

MTC-37

TROUBLE DIAGNOSIS

< SERVICE INFORMATION >

OK >> GO TO 11.
NG >> Repair harness or connector.

11.CHECK FAN SWITCH

Check continuity between front air control terminal 9 and 10, 11, 12,
13, 14.

Terminals Condition Continuity

14 Fan control dial: OFF

10 Fan control dial: 1-speed

9

OK or NG

OK >> Replace the front blower motor resistor. Refer to MTC-67, "Removal and Installation".
NG >> Replace front air control. Refer to MTC-59, "

11 Fan control dial: 2-speed

12 Fan control dial: 3-speed

13 Fan control dial: 4-speed

Magnet Clutch Circuit (If Equipped) INFOID:0000000005396502

SYMPTOM: Magnet clutch does not engage.

Yes

SJIA0732E

Removal and Installation".

INSPECTION FLOW

1.CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - MAGNET CLUTCH

1. Turn ignition switch ON.

2. Turn blower control dial to the desired (1 to 4 speed) position.

3. Press the A/C switch. A/C indicator will turn on.

4. Confirm that the compressor clutch engages (sound or visual inspection).
Can the symptom be duplicated?

YES >> GO TO 3.
NO >> GO TO 2.

2.CHECK FOR ANY SYMPTOMS

Perform a complete operational check for any symptoms. Refer to MTC-31, "
Does another symptom exist?

YES >> Refer to MTC-23, "How to Perform Trouble Diagnosis for Quick and Accurate Repair".
NO >> System OK.

Operational Check".

3.CHECK FOR SERVICE BULLETINS

Check for any service bulletins.

>> GO TO 4.

4.CHECK COMPRESSOR BELT TENSION

Check compressor belt tension. Refer to EM-14, "
(MR18DE).

OK or NG

OK >> GO TO 5.
NG >> Adjust or replace A/C compressor belt. Refer to EM-15, "

EM-132, "

Removal and Installation" (MR18DE).

Checking" (HR16DE) or EM-132, "Checking Drive Belts"

Removal and Installation" (HR16DE) or

5.CHECK REFRIGERANT PRESSURE

Check refrigerant pressure with manifold gauge connected. Refer to MTC-46, "
OK or NG

OK >> GO TO 6.
NG >> Perform trouble diagnosis for unusual pressure. Refer to MTC-46, "

Revision: January 2010 2010 Versa

MTC-38

Insufficient Cooling".

Insufficient Cooling".

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

6.CHECK MAGNET CLUTCH CIRCUIT

Perform diagnostic procedure for the magnetic clutch. Refer to "DIAGNOSTIC PROCEDURE FOR MAGNET
CLUTCH".

OK or NG

OK >> If the symptom still exists, perform a complete operational check. Refer to MTC-31, "Operational

Check". If other symptoms exist, refer to MTC-23, "How to Perform Trouble Diagnosis for Quick
and Accurate Repair".

NG >> Repair as necessary.

SYSTEM DESCRIPTION

Thermo control amp. controls A/C compressor operation by intake air temperature and signal from ECM.
The defrost A/C switch controls A/C compressor operation by the BCM when the mode switch is turned to the

(DEF) position.

Low Temperature Protection Control

When intake air temperatures are higher than 4°C (39°F), the com­pressor turns ON. The compressor turns OFF when intake air tem­peratures are lower than 2°C (36°F).

SJIA0741E

A

B

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F

G

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DIAGNOSTIC PROCEDURE FOR MAGNET CLUTCH

SYMPTOM: Magnet clutch does not engage in A/C, defrost/foot, or defrost mode.

1.PERFORM AUTO ACTIVE TEST

Refer to PG-20, "
Does the magnet clutch operate?

YES >> GO TO 5.
NO >> Check 10A fuse (No. 42, located in the IPDM E/R). Refer to PG-24, "

Auto Active Test".

Arrangement - Type B".

• If fuse is OK, GO TO 2.

• If fuse is NG, replace fuse and check harness for short circuit. Repair or replace if necessary.

2.CHECK POWER SUPPLY FOR IPDM E/R

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MTC

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IPDM E/R Terminal

Check power supply to 10A fuse (No. 42 located in the IPDM E/R).

Revision: January 2010 2010 Versa

MTC-39

TROUBLE DIAGNOSIS

< SERVICE INFORMATION >

:Battery voltage should exist

OK or NG

OK >> GO TO 3.
NG >> Check harness for open circuit. Repair or replace if necessary.

3.CHECK POWER SUPPLY FOR A/C COMPRESSOR

1. Disconnect A/C compressor connector.

2. Start the engine.

3. Turn blower control dial and A/C switch ON.

4. Check voltage between A/C compressor harness connector F3
terminal 1 and ground.

1 - Ground :Battery voltage

OK or NG

OK >> Replace magnet clutch. Refer to MTC-79, "Removal and

Installation of Compressor - HR16DE" or MTC-81,
"Removal and Installation of Compressor - MR18DE".

NG >> GO TO 4.

4.CHECK CIRCUIT CONTINUITY BETWEEN IPDM E/R AND COMPRESSOR

SJIA0743E

1. Turn ignition switch OFF.

2. Disconnect IPDM E/R connector.

3. Check continuity between A/C compressor harness connector
F3 (A) terminal 1 and IPDM E/R harness connector E43 (B) ter­minal 11.

1 - 11 :Continuity should exist

OK or NG

OK >> Replace IPDM E/R. Refer to PG-28, "Removal and

Installation of IPDM E/R".

NG >> Repair harness or connector.

5.CHECK DEFROST A/C SWITCH

1. Start the engine.

2. Turn the mode control dial to (DEF) position.

Does the magnet clutch operate

OK >> GO TO 6.
NG >> GO TO 23.

6.CHECK BCM INPUT (COMPRESSOR ON) SIGNAL

1. Turn ignition switch OFF.

2. Check compressor ON/OFF signal. Refer to MTC-22, "

A/C SW ON : AIR COND SW ON

A/C SW OFF : AIR COND SW OFF

CONSULT-III Function (BCM)".

WJIA2233E

OK or NG

OK >> GO TO 8.
NG >> GO TO 7.

7.CHECK CIRCUIT CONTINUITY BETWEEN FRONT AIR CONTROL AND BCM

Revision: January 2010 2010 Versa

MTC-40

TROUBLE DIAGNOSIS

< SERVICE INFORMATION >

1. Turn ignition switch OFF.

2. Disconnect front air control and BCM connector.

3. Check continuity between front air control harness connector
M33 (A) terminal 1and BCM harness connector M18 (B) termi­nal 27.

1 - 27 :Continuity should exist

A

B

OK or NG

OK >> GO TO 8.
NG >> Repair harness or connector.

8.CHECK REFRIGERANT PRESSURE SENSOR

1. Reconnect front air control connector and BCM connector.

2. Check refrigerant pressure sensor. Refer to EC-1030, "

"Diagnosis Procedure" (HR16DE).

.OK or NG

OK >> • WITH CONSULT-III

GO TO 9.

• WITHOUT CONSULT-III
GO TO 10.

NG >> Replace as necessary.

9.CHECK BCM INPUT (FAN ON) SIGNAL

Check FAN ON/OFF signal. Refer to MTC-22, "

FAN CONTROL DIAL ON : FAN ON SIG ON

FAN CONTROL DIAL OFF : FAN ON SIG OFF

OK or NG

OK >> GO TO 12.
NG >> GO TO 10.

CONSULT-III Function (BCM)".

10.CHECK BCM INPUT (FAN ON) SIGNAL

SJIA0759E

Diagnosis Procedure" (MR18DE) or EC-451,

C

D

E

F

G

H

I

MTC

1. Turn ignition switch ON.

2. Turn blower control dial to "1" position.

3. Confirm fan on signal between front air control harness connec­tor M33 terminal 14 and ground using oscilloscope.

Te rm in al s

(+)

Connector Terminal

Front air con-

trol: M33

14 Ground

(-)

Volta ge

(Approx.)

ZJIA0583J

OK or NG

OK >> GO TO 12.
NG >> GO TO 11.

11.CHECK CIRCUIT CONTINUITY BETWEEN BCM AND FRONT AIR CONTROL

SJIA0750E

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Revision: January 2010 2010 Versa

MTC-41

TROUBLE DIAGNOSIS

< SERVICE INFORMATION >

1. Turn ignition switch OFF.

2. Disconnect front air control connector and BCM connector.

3. Check continuity between BCM harness connector M18 (A) ter­minal 28 and front air control harness connector M33 (B) termi­nal 14.

AB

Connector Terminal Connector Terminal

BCM: M18 28

Front air control:

M33

14 Yes

Continuity

OK or NG

OK >> GO TO 12.
NG >> Repair harness or connector.

12.CHECK FAN SWITCH CIRCUIT

1. Turn blower control dial to the OFF position.

2. Check continuity between front air control terminals 9 and 14.

9 - 14 :Continuity should exist

OK or NG

OK >> GO TO 13.
NG >> Replace front air control. Refer to MTC-57, "

Disassem-

bly and Assembly".

13.CHECK FRONT AIR CONTROL GROUND CIRCUIT

Check continuity between front air control harness connector M33
terminal 9 and ground.

SJIA0751E

SJIA0753E

9 - Ground :Continuity should exist

OK or NG

OK >> GO TO 14.
NG >> Repair harness or connector.

14.CHECK BCM INPUT (COMPRESSOR ON) SIGNAL

1. Reconnect BCM connector and front air control connectors.

2. Turn ignition switch ON.

3. Turn blower control dial clockwise to position "1".

4. Confirm compressor on signal between front air control harness
connector M33 terminal 1 and ground using oscilloscope.

SJIA0754E

SJIA0755E

Revision: January 2010 2010 Versa

MTC-42

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

Te rm in al s

(+)

Connector Terminal

Front air control:

M33

(-)

1Ground

Voltage

(Approx.)

ZJIA0584J

OK or NG

OK >> GO TO 15.
NG >> GO TO 17.

15.CHECK A/C SWITCH CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect front air control connector.

3. While pressing the A/C switch, check continuity between front
air control terminals 1 and 8.

1 - 8 :Continuity should exist

OK or NG

OK >> GO TO 16.
NG >> Replace front air control. Refer to MTC-57, "

Disassem-

bly and Assembly".

16.CHECK FRONT AIR CONTROL GROUND CIRCUIT

Check continuity between front air control harness connector M33
terminal 8 and ground.

SJIA0756E

A

B

C

D

E

F

G

H

I

MTC

8 - Ground :Continuity should exist

OK or NG

OK >> GO TO 17.
NG >> Repair harness or connector.

17.CHECK POWER SUPPLY FOR THERMO CONTROL AMP.

1. Turn ignition switch OFF.

2. Disconnect thermo control amp. connector.

3. Turn ignition switch ON.

4. Confirm thermo amp signal between thermo control amp. har­ness connector M42 terminal 3 and ground using oscilloscope.

SJIA0758E

SJIA0760E

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Revision: January 2010 2010 Versa

MTC-43

< SERVICE INFORMATION >

Te rm in al s

(+)

Connector Terminal

(-)

TROUBLE DIAGNOSIS

Volta ge

(Approx.)

Thermo control

amp.: M42

3Ground

ZJIA0719J

OK or NG

OK >> • GO TO 18 (with CVT).

• GO TO 19 (without CVT).

NG >> GO TO 21.

18.CHECK THERMO CONTROL AMP. GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Check continuity between thermo control amp. harness connec­tor M42 terminal 2 and ground.

2 - Ground :Continuity should exist

OK or NG

OK >> Repair thermo control amp. jumper as necessary.
NG >> Repair harness or connector.

19.CHECK POWER SUPPLY FOR THERMO CONTROL AMP.

Check voltage between thermo control amp. harness connector M42
terminal 1 and ground.

SJIA0763E

1 - Ground :Battery voltage

OK or NG

OK >> GO TO 20.
NG >> Check power supply circuit and 10A fuse [No. 16,

located in the fuse block (JB)]. Refer to PG-74

.

• If fuse is OK, check harness for open circuit. Repair or
replace if necessary.

• If fuse is NG, replace fuse and check harness for short
circuit. Repair or replace if necessary.

20.CHECK THERMO CONTROL AMP. GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Check continuity between thermo control amp. harness connec­tor M42 terminal 2 and ground.

2 - Ground :Continuity should exist

OK or NG

OK >> Replace thermo control amp. Refer to MTC-58,

"Removal and Installation".

NG >> Repair harness or connector.

21.CHECK CIRCUIT CONTINUITY BETWEEN THERMO CONTROL AMP. AND BCM

SJIA0762E

SJIA0763E

Revision: January 2010 2010 Versa

MTC-44

TROUBLE DIAGNOSIS

< SERVICE INFORMATION >

1. Turn ignition switch OFF.

2. Disconnect BCM connector.

3. Check continuity between thermo control amp. harness connec­tor M42 (A) terminal 3 and BCM harness connector M18 (B) ter­minal 26.

3 - 26 :Continuity should exist

A

B

OK or NG

OK >> GO TO 22.
NG >> Repair harness or connector.

22.CHECK CAN COMMUNICATION

Check CAN communication. Refer to LAN-17, "Trouble Diagnosis Flow Chart".

•BCM – ECM

• ECM – IPDM E/R

OK or NG

OK >> Replace BCM. Refer to BCS-19, "Removal and Installation of BCM".
NG >> Repair or replace malfunctioning part(s).

23.CHECK DEFROST A/C SWITCH CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM connector.

3. Press the defrost A/C switch.

NOTE:

The defrost A/C switch is located on back side of the front air
control.

4. Check continuity between BCM harness connector M18 terminal
10 and ground.

10 - Ground :Continuity should exist

OK or NG

OK >> Replace BCM. Refer to BCS-19, "Removal and Installation of BCM".
NG >> GO TO 24.

24.CHECK CIRCUIT CONTINUITY BETWEEN DEFROST A/C SWITCH AND BCM

C

SJIA0764E

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MTC

WJIA2252E

K

1. Disconnect defrost A/C switch connector.

2. Check continuity between BCM harness connector M18 (B) ter­minal 10 and defrost A/C switch harness connector M41 (A) ter­minal 15.

10 - 15 :Continuity should exist

OK or NG

OK >> GO TO 25.
NG >> Repair harness or connector.

WJIA2254E

25.CHECK CIRCUIT CONTINUITY BETWEEN DEFROST A/C SWITCH AND GROUND

Revision: January 2010 2010 Versa

MTC-45

L

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TROUBLE DIAGNOSIS

< SERVICE INFORMATION >

Check continuity between A/C defrost switch harness connector
M41 terminal 16 and ground.

16 - Ground :Continuity should exist

OK or NG

OK >> Replace defrost A/C switch.
NG >> Repair harness or connector.

WJIA2255E

Insufficient Cooling INFOID:0000000005396503

SYMPTOM: Insufficient cooling

INSPECTION FLOW

1.CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - TEMPERATURE DECREASE

1. Turn temperature control dial counterclockwise to maximum cold position.

2. Check for cold air at discharge air outlets.
Can the symptom be duplicated?

YES >> GO TO 3.
NO >> GO TO 2.

2.CHECK FOR ANY SYMPTOMS

Perform a complete operational check for any symptoms. Refer to MTC-31, "
Does another symptom exist?

YES >> Refer to MTC-23, "How to Perform Trouble Diagnosis for Quick and Accurate Repair".
NO >> System OK.

Operational Check".

3.CHECK FOR SERVICE BULLETINS

Check for any service bulletins.

>> GO TO 4.

4.CHECK COMPRESSOR DRIVE BELT TENSION

Check compressor belt tension. Refer to EM-14, "
(MR18DE).

OK or NG

OK >> GO TO 5.
NG >> Adjust or replace compressor belt. Refer to EM-15, "

132, "Removal and Installation" (MR18DE).

Checking" (HR16DE) or EM-132, "Checking Drive Belts"

Removal and Installation" (HR16DE) or EM-

5.CHECK AIR MIX DOOR CABLE

Check and verify air mix door cable operation. Refer to MTC-65, "
Does air mix door operate correctly?

YES >> GO TO 6.
NO >> Repair or replace as necessary.

Air Mix Door Cable Adjustment".

6.CHECK COOLING FAN MOTOR OPERATION

Check and verify cooling fan motor for smooth operation. Refer to EC-911, "
(MR18DE) or EC-362, "Component Function Check" (HR16DE).

Does cooling fan motor operate correctly?

YES >> GO TO 7.
NO >> Check cooling fan motor. Refer to EC-914, "

ponent Function Check" (HR16DE).

Diagnosis Procedure" (MR18DE) or EC-362, "Com-

Overall Function Check"

7.CHECK FOR EVAPORATOR FREEZE UP

Revision: January 2010 2010 Versa

MTC-46

TROUBLE DIAGNOSIS

< SERVICE INFORMATION >

Start engine and run A/C. Check for evaporator freeze up.
Does evaporator freeze up?

YES >> Perform diagnostic work flow. Refer to "DIAGNOSTIC WORK FLOW".
NO >> GO TO 8.

8.CHECK REFRIGERANT PRESSURE

Check refrigerant pressure with manifold gauge connected. Refer to "PERFORMANCE CHART".
OK or NG

OK >> GO TO 9.
NG >> Perform diagnostic work flow. Refer to "DIAGNOSTIC WORK FLOW".

9.CHECK AIR DUCTS

Check ducts for air leaks.
OK or NG

OK >> If the symptom still exists, perform a complete operational check. Refer to MTC-31, "Operational

Check". If other symptoms exist, refer to MTC-23, "How to Perform Trouble Diagnosis for Quick
and Accurate Repair".

NG >> Repair air leaks.

DIAGNOSTIC WORK FLOW

A

B

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E

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Revision: January 2010 2010 Versa

MTC-47

P

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

AWIIA0999GB

*1 MTC-93, "Checking System for

Leaks Using the Fluorescent Leak
Detector"

*4 "TROUBLE DIAGNOSIS FOR AB-

NORMAL PRESSURE"

Revision: January 2010 2010 Versa

*2 MTC-79, "Removal and Installation of

Compressor - HR16DE" or MTC-81,
"Removal and Installation of Com­pressor - MR18DE"

*5 MTC-33, "

Air Mix Door"

MTC-48

*3 "PERFORMANCE CHART"

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

A

B

C

D

E

F

G

AWIIA1000GB

*1 MTC-63, "Removal and Installation" *2 MTC-34, "Front Blower Motor Circuit" *3 MTC-79, "Removal and Installation of

Compressor - HR16DE" or MTC-81,
"Removal and Installation of Com­pressor - MR18DE"

*4 EM-14, "Checking" (HR16DE) EM-

132, "Checking Drive Belts"

(MR18DE)

*5 MTC-79, "

Compressor - HR16DE" or MTC-81,
"Removal and Installation of Com­pressor - MR18DE"

Removal and Installation of

H

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PERFORMANCE CHART

Test Condition

Revision: January 2010 2010 Versa

MTC-49

TROUBLE DIAGNOSIS

< SERVICE INFORMATION >

Testing must be performed as follows:

Vehicle condition Indoors or in the shade (in a well-ventilated place)

Doors Closed

Door window Open

Hood Open

TEMP. Max. COLD

Mode control dial

Intake door lever

Blower speed

Engine speed Idle speed

Operate the air conditioning system for 10 minutes before taking measurements.

TEST READING

Recirculating-to-discharge Air Temperature Table

(Ventilation) set

(Recirculation) set

Max. speed set

Inside air (Recirculating air) at blower assembly inlet

Relative humidity

%

50 - 60

60 - 70

Air temperature

°C (°F)

20 (68) 7.2 - 9.1 (45 - 48)

25 (77) 11.4 - 13.8 (53 - 57)

30 (86) 15.5 - 18.4 (60 - 65)

35 (95) 20.3 - 23.7 (69 - 75)

20 (68) 9.1 - 10.9 (48 - 52)

25 (77) 13.8 - 16.2 (57 - 61)

30 (86) 18.4 - 21.3 (65 - 70)

35 (95) 23.7 - 27.1 (75 - 81)

Ambient Air Temperature-to-operating Pressure Table

Relative humidity

%

50 - 70

Ambient air

Air temperature

°C (°F)

20 (68)

25 (77)

30 (86)

35 (95)

40 (104)

High-pressure (Discharge side)

kPa (bar, kg/cm

(11.08 - 13.63, 8.6 - 10.6, 122 - 150)

(10.94 - 13.38, 11.2 - 13.6, 159 - 194)

(12.98 - 15.90, 13.2 - 16.2, 188 - 231)

(13.83 - 16.88, 14.1 - 17.2, 201 - 245)

(16.28 - 19.88, 16.6 - 20.3, 236 - 288)

*1: With blower control dial in the "1" position
*2: With blower control dial in the "4" position.

Discharge air temperature at center ventilator

2

, psi)

843 - 1,036 *1

1,094 - 1,338 *1

1,298 - 1,590 *1

1,383 - 1,688 *2

1,628 - 1,988 *2

°C (°F)

Low-pressure (Suction side)

kPa (bar, kg/cm2 , psi)

159.0 - 194.0

(1.59 - 1.94, 1.62 - 1.98, 23.1 - 28.1)

196.3 - 240.0

(1.96 - 2.40, 2.00 - 2.45, 28.5 - 34.8)

248.0 - 302.7

(2.48 - 3.03, 2.53 - 3.09, 36.0 - 43.9)

308.8 - 377.4

(3.09 - 3.77, 3.15 - 3.85, 44.8 - 54.7)

377.4 - 461.2

(3.77 - 4.61, 3.85 - 4.70, 54.7 - 66.8)

TROUBLE DIAGNOSIS FOR ABNORMAL PRESSURE

Whenever system’s high and/or low side pressure(s) is/are abnormal, diagnose using a manifold gauge. The
marker above the gauge scale in the following tables indicates the standard (usual) pressure range. Since the
standard (usual) pressure, however, differs from vehicle to vehicle, refer to above table (Ambient air tempera­ture-to-operating pressure table).

Revision: January 2010 2010 Versa

MTC-50

TROUBLE DIAGNOSIS

< SERVICE INFORMATION >

Both High- and Low-pressure Sides are Too High

Gauge indication Refrigerant cycle Probable cause Corrective action

Pressure is reduced soon af­ter water is splashed on con­denser.

Air suction by cooling fan is in­sufficient.

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

AC359A

• Low-pressure pipe is not
cold.

• When compressor is
stopped high-pressure val­ue quickly drops by approx­imately 196 kPa (1.96 bar, 2

2

kg/cm

, 28 psi). It then de­creases gradually thereaf­ter.

Engine tends to overheat. Engine cooling systems malfunction.

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

• Plates are sometimes cov­ered with frost.

High-pressure Side is Too High and Low-pressure Side is Too Low

Excessive refrigerant charge in refrig­eration cycle.

Insufficient condenser cooling perfor­mance.

↓

1. Condenser fins are clogged.

2. Improper fan rotation of cooling
fan.

Poor heat exchange in condenser
(After compressor operation stops,
high-pressure decreases too slowly.).

↓

Air in refrigeration cycle.

• Excessive liquid refrigerant on low-

pressure side.

• Excessive refrigerant discharge

flow.

• Expansion valve is open a little

compared with the specification.

↓

Improper expansion valve adjust­ment.

Reduce refrigerant until
specified pressure is ob­tained.

• Clean condenser.

• Check and repair cooling
fan if necessary.

Evacuate repeatedly and
recharge system.

Check and repair each en­gine cooling system.

Replace expansion valve.

A

B

C

D

E

F

G

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I

MTC

Gauge indication Refrigerant cycle Probable cause Corrective action

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.

AC360A

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

High-pressure Side is Too Low and Low-pressure Side is Too High

Gauge indication Refrigerant cycle Probable cause Corrective action

Compressor pressure operation

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

AC356A

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

No temperature difference be­tween high- and low-pressure
sides.

is improper.

↓

Damaged inside compressor
packings.

Compressor pressure operation
is improper.

↓

Damaged inside compressor
packings.

• Check and repair or re­place malfunctioning
parts.

• Check oil for contami­nation.

Replace compressor.

Replace compressor.

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Revision: January 2010 2010 Versa

MTC-51

TROUBLE DIAGNOSIS

< SERVICE INFORMATION >

Both High- and Low-pressure Sides are Too Low

Gauge indication Refrigerant cycle Probable cause Corrective action

• There is a big temperature dif­ference between liquid tank
outlet and inlet. Outlet tem­perature is extremely low.

• Liquid tank inlet and expan­sion valve are frosted.

• Temperature of expansion
valve inlet is extremely low as
compared with areas near liq­uid tank.

• Expansion valve inlet may be
frosted.

• Temperature difference oc­curs somewhere in high-pres­sure side.

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

AC353A

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

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

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

Air flow volume is not enough or
is too low.

Liquid tank inside is slightly
clogged.

High-pressure pipe located be­tween liquid tank and expansion
valve is clogged.

Low refrigerant charge.

↓

Leaking fittings or components

Expansion valve closes a little
compared with the specification.

↓

1. Improper expansion valve
adjustment.

2. Malfunctioning expansion
valve.

3. Outlet and inlet may be
clogged.

Low-pressure pipe is clogged or
crushed.

Evaporator is frozen.

• Replace liquid tank.

• Check oil for contamination.

• Check and repair malfunc­tioning parts.

• Check oil for contamination.

Check refrigerant for leaks.
Refer to MTC-92, "

Refrigerant Leaks" .

• Remove foreign particles by
using compressed air.

• Replace expansion valve.

• Check oil for contamination.

• Check and repair malfunc­tioning parts.

• Check oil for contamination.

• Check thermo control amp.
Refer to MTC-38, "

Clutch Circuit (If Equipped)"

.

• Replace compressor.

• Repair evaporator fins.

• Replace evaporator.

•Refer to MTC-34, "

Blower Motor Circuit" .

Checking of

Magnet

Front

Low-pressure Side Sometimes Becomes Negative

Gauge indication Refrigerant cycle Probable cause Corrective action

Low-pressure side sometimes be­comes negative.

AC354A

• Air conditioning system does
not function and does not cy­clically cool the compart­ment air.

• The system constantly func­tions for a certain 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 Negative

Revision: January 2010 2010 Versa

MTC-52

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

Gauge indication Refrigerant cycle Probable cause Corrective action

Leave the system at rest until
no frost is present. Start it
again to check whether or not
the malfunction is caused by
water or foreign particles.

• If water is the cause, initially

Low-pressure side becomes nega­tive.

AC362A

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

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

↓

Expansion valve or liquid tank
is frosted.

cooling is okay. Then the wa­ter freezes causing a block­age. Drain water from
refrigerant or replace refrig­erant.

• If due to foreign particles, re­move expansion valve and
remove the particles with dry
and compressed air (not
shop air).

• If either of the above meth­ods cannot correct the mal­function, replace expansion
valve.

• Replace liquid tank.

• Check oil for contamination.

Insufficient Heating INFOID:0000000005396504

SYMPTOM: Insufficient heating

A

B

C

D

E

F

G

H

INSPECTION FLOW

1.CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - TEMPERATURE INCREASE

1. Turn temperature control dial clockwise to maximum heat position.

2. Check for hot air at discharge air outlets.
Can the symptom be duplicated?

YES >> GO TO 3.
NO >> GO TO 2.

2.CHECK FOR ANY SYMPTOMS

Perform a complete operational check for any symptoms. Refer to MTC-31, "
Does another symptom exist?

YES >> Refer to MTC-23, "How to Perform Trouble Diagnosis for Quick and Accurate Repair" .
NO >> System OK.

Operational Check" .

3.CHECK FOR SERVICE BULLETINS

Check for any service bulletins.

>> GO TO 4.

4.CHECK COOLANT SYSTEM

1. Check engine coolant level. Refer to CO-12, "

2. Check hoses for leaks or kinks.

3. Check Radiator cap. Refer to CO-15, "

Cap" (MR18DE).

OK or NG

OK >> GO TO 5.
NG >> Repair/replace as necessary.

Inspection" (HR16DE) or CO-36, "Inspection" (MR18DE).

Checking Radiator Cap" HR16DE or CO-39, "Checking Radiator

5.CHECK AIR MIX DOOR CABLE

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Check air mix door cable operation. Refer to MTC-65, "

Air Mix Door Cable Adjustment" .

OK or NG

Revision: January 2010 2010 Versa

MTC-53

TROUBLE DIAGNOSIS

< SERVICE INFORMATION >

YES >> GO TO 6.
NO >> Adjust or replace air mix door cable. Refer to MTC-65, "

Air Mix Door Cable Adjustment" .

6.CHECK AIR DUCTS

Check ducts for air leaks.
OK or NG

OK >> GO TO 7.
NG >> Repair air leaks.

7.CHECK HEATER HOSE TEMPERATURES

1. Start engine and warm it up to normal operating temperature.

2. Touch both the inlet and outlet heater hoses. The inlet hose should be hot and the outlet hose should be
warm.

Is the inlet hose hot and the outlet hose warm?

YES >> GO TO 8.
NO >> Both hoses warm: GO TO 9.

8.CHECK ENGINE COOLANT TEMPERATURE SENSOR

Check engine control temperature sensor. Refer to EC-690, "

"Component Inspection" (HR16DE).

OK or NG

OK >> System OK.
NG >> Repair or replace as necessary. Retest.

Component Inspection" (MR18DE) or EC-163,

9.CHECK HEATER HOSES

Check heater hoses for proper installation.
OK or NG

OK >> GO TO 10.
NG >> Repair /replace as necessary. Retest GO TO 7.

10.BACK FLUSH HEATER CORE

1. Back flush heater core.

2. Drain the water from the system.

3. Refill system with new engine coolant. Refer to CO-12, "

"Changing Engine Coolant" (MR18DE) .

4. Start engine and warm it up to normal operating temperature.

5. Touch both the inlet and outlet heater hoses. The inlet hose should be hot and the outlet hose should be
warm.

Is the inlet hose hot and the outlet hose warm?

YES >> System OK.
NO >> Replace heater core and refill engine coolant. Refer to MTC-68, "

Changing Engine Coolant" (HR16DE) or CO-36,

Removal and Installation" .

Noise INFOID:0000000005396505

SYMPTOM: Noise

INSPECTION FLOW

Revision: January 2010 2010 Versa

MTC-54

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

A

B

C

D

E

F

G

*1. MTC-31, "Operational Check" *2. EM-14, "Checking" (HR16DE) or EM-

132, "Checking Drive Belts"

(MR18DE)

*4. MTC-92, "Removal and Installation of

Expansion Valve"

*7. MTC-79, "Removal and Installation of

Compressor - HR16DE" or MTC-81,
"Removal and Installation of Com­pressor - MR18DE"

*5. MTC-79, "Removal and Installation of

Compressor - HR16DE" or MTC-81,
"Removal and Installation of Com­pressor - MR18DE"

*8. MTC-17, "Maintenance of Oil Quanti-

ty in Compressor"

AWIIA1001GB

*3. MTC-46, "

*6 MTC-79, "Removal and Installation of

Compressor - HR16DE" or MTC-81,
"Removal and Installation of Com­pressor - MR18DE"

*9 MTC-90, "Removal and Installation of

Liquid Tank"

Insufficient Cooling"

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Revision: January 2010 2010 Versa

MTC-55

CONTROLLER

< SERVICE INFORMATION >

CONTROLLER

Removal and Installation INFOID:0000000005396506

REMOVAL

1. Remove cluster lid C and instrument finisher D. Refer to IP-11, "Component Parts" .

2. Remove intake door lever knob. Refer to MTC-57, "

3. Remove mounting screws and clips, and then remove controller
finisher.

4. Remove mounting screws, and then pull out controller.

Disassembly and Assembly" .

ZJIA0697E

5. Remove instrument panel and pad. Refer to IP-11, "

6. Remove air mix door cable, mode door cable and intake door cable from A/C unit assembly.

7. Disconnect connector, and then remove controller.

Component Parts" .

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

Adjust the door cables during installation. Refer to MTC-64, "

"Mode Door Cable Adjustment" and MTC-65, "Air Mix Door Cable Adjustment" .

Intake Door Cable Adjustment" , MTC-66,

ZJIA0698E

Revision: January 2010 2010 Versa

MTC-56

CONTROLLER

< SERVICE INFORMATION >

Disassembly and Assembly INFOID:0000000005396507

ZJIA0106J

1. Air mix door cable 2. Intake door cable 3. Mode door cable

4. A/C controller assembly 5. Mode control dial 6. Rear DEF button

7. A/C button 8. Temperature control dial 9. Illumination bulb

10. Intake door lever knob 11. Fan control dial

A

B

C

D

E

F

G

H

CAUTION:

Install inner cable of each door cable to the corresponding
lever, as shown in the figure. Press outer cable until it hooks on
the tabs and becomes secure.

MJIA0038E

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Revision: January 2010 2010 Versa

MTC-57

P

THERMO CONTROL AMPLIFIER

< SERVICE INFORMATION >

THERMO CONTROL AMPLIFIER

Removal and Installation INFOID:0000000005396508

NOTE:

Only MR18DE - TYPE 2 systems are equipped with a thermo control amplifier.

REMOVAL

1. Remove evaporator. Refer to MTC-91, "Removal and Installation of Evaporator" .

CAUTION:

Cap or wrap the joint of the pipe with suitable material such as vinyl tape to avoid the entry of air.

2. Mark the mounting position of the thermo control amp. and then
remove thermo control amp. (1) from evaporator (2).

ZJIA0798J

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

• Replace O-rings for A/C piping with new ones, and apply compressor oil when installing.

• Install the thermo control amp. at the mark made during removal of the thermo control amp.

• When recharging refrigerant, check for leaks.

Revision: January 2010 2010 Versa

MTC-58

< SERVICE INFORMATION >

A/C UNIT ASSEMBLY

A/C UNIT ASSEMBLY

Removal and Installation INFOID:0000000005396509

SJIA0648E

A. A/C unit assembly bolts B. Steering member bolts C. Steering column nuts

REMOVAL

1. Use a recovery/recycling equipment (for HFC-134a) to discharge refrigerant.

2. Drain coolant from cooling system. Refer to CO-36, "

3. Remove cowl top cover. Refer to EI-22, "

Removal and Installation".

4. Remove upper clip and position the lower dash insulator aside.

5. Remove bolt (A), and then disconnect low-pressure flexible
hose (1) and high-pressure pipe (2) from evaporator.

CAUTION:

Cap or wrap the joint of the pipe with suitable material such
as vinyl tape to avoid the entry of air.

Changing Engine Coolant".

A

B

C

D

E

F

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SJIA0644E

6. Remove clamps (A), and then disconnect heater hoses (1) from
heater core.

SJIA0645E

7. Remove console box assembly. Refer to IP-11, "

Revision: January 2010 2010 Versa

Component Parts".

MTC-59

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A/C UNIT ASSEMBLY

< SERVICE INFORMATION >

8. Remove instrument stay nuts (A) and harness clamps (B), and
then remove instrument stay (1).

9. Disconnect thermo control amp. connector (1) for MR18DE ­TYPE 2 systems as shown. Disconnect the thermo control amp.
short connector for MR18DE - TYPE 1 and HR16DE systems.

SJIA0646E

10. Remove instrument panel and pad. Refer to IP-11, "

11. Remove side ventilator ducts. Refer to MTC-70, "

12. Remove center ventilator ducts. Refer to MTC-70, "

13. Remove side kicking plates. Refer to EI-39, "

Component".

Component Parts".

Removal and Installation".

Removal and Installation".

14. Disconnect the fuel filler door cable and the rear hatch door cable.

15. Remove A/C unit assembly bolts, steering member bolts, steering column nuts and harness clips.

16. Remove steering member, and then remove A/C unit assembly.

INSTALLATION

Installation is in the reverse order of removal.

• When filling radiator with coolant, refer to CO-36, "

• Recharge the refrigerant.

A/C unit assembly bolt : 6.9 N·m (0.7 kg-m, 61 in-lb)

Steering member bolt : 12 N·m (1.25 kg-m, 9 ft-lb)

Steering column nut : Refer to PS-9, "

CAUTION:

• Replace O-rings for A/C piping with new ones, and apply compressor oil when installing.

• When recharging refrigerant, check for leaks.

Changing Engine Coolant".

Removal and Installation".

SJIA0647E

Revision: January 2010 2010 Versa

MTC-60

A/C UNIT ASSEMBLY

< SERVICE INFORMATION >

Disassembly and Assembly INFOID:0000000005396510

A

B

C

D

E

F

G

SJIA1515E

1. Blower case (right) 2. Foot duct (right) 3. Blower motor

4. Sub ventilator·defroster door lever 5. Sub ventilator·defroster door rod 6. Ventilator·defroster door lever

7. Ventilator·defroster door rod 8. Intake door lever 9. Ventilator·defroster door link

10. Main link 11. Thermo control amp.
(MR18DE - TYPE1)

13. Lower blower case 14. Heater pipe cover 15. Heater pipe clip

16. Intake door link 17. Blower fan resistor 18. Intake case (left)

19. Center defroster duct 20. Blower case (left) 21. Cover

22. Cover 23. Expansion valve cover 24. Foot door lever

25. Foot door link 26. Expansion valve 27. Air conditioner filter

28. Evaporator cover 29. Heater core 30. Spring

31. Water valve rod 32. Air mix door lever 33. Intake door

34. Intake case (right) 35. Foot duct (left) 36. Ventilator·defroster door

37. Foot door 38. Air mix door 39. Seal

12. Heater pipe packing

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Revision: January 2010 2010 Versa

MTC-61

A/C UNIT ASSEMBLY

< SERVICE INFORMATION >

40. Expansion valve grommet 41. O-ring 42. Evaporator

43. Cooler pipe assembly

Revision: January 2010 2010 Versa

MTC-62

< SERVICE INFORMATION >

BLOWER MOTOR

BLOWER MOTOR

Removal and Installation INFOID:0000000005396511

REMOVAL

1. Remove instrument panel and pad. Refer to IP-11, "Component Parts".

2. Remove side ventilator duct (right). Refer to MTC-70, "

3. Disconnect blower motor connector (1).

4. Push the flange holding hook (A) toward the blower motor (2),
then rotate the blower motor (2) clockwise and remove it from
the A/C unit assembly.

CAUTION:

When blower fan and blower motor are assembled, the bal­ance is adjusted, do not disassemble to replace the individ­ual parts.

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

Rotate the blower motor until the blower motor flange holding hook locks securely into the A/C unit
assembly.

Removal and Installation".

LJIA0199E

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B

C

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E

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Revision: January 2010 2010 Versa

MTC-63

INTAKE DOOR

< SERVICE INFORMATION >

INTAKE DOOR

Intake Door Cable Adjustment INFOID:0000000005396512

1. Remove instrument lower finisher. Refer to IP-11.

2. Remove outer cable of intake door cable (1) from clamp (A).

3. Set intake door lever to REC position.

4. Push intake door link (2) in the direction shown by the arrow,
and then carefully pull outer cable to controller side, and install
clamp (A).

5. Operate intake door lever to insure that inner cable moves
smoothly.

CAUTION:

When clamping the outer cable, do not move the inner
cable.

SJIA0650E

Revision: January 2010 2010 Versa

MTC-64

< SERVICE INFORMATION >

AIR MIX DOOR

AIR MIX DOOR

Air Mix Door Cable Adjustment INFOID:0000000005396513

1. Remove steering member. Refer to MTC-59.

2. Remove outer cable of air mix door cable (1) from clamp (A).

3. Set temperature control dial to full cold position.

4. Push air mix door lever (2) in the direction shown by arrow, and
then carefully pull outer cable toward controller side, and install
clamp (A).

5. Operate temperature control dial to insure that inner cable
moves smoothly.

CAUTION:

When clamping the outer cable, do not move the inner
cable.

SJIA1150E

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B

C

D

E

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Revision: January 2010 2010 Versa

MTC-65

MODE DOOR

< SERVICE INFORMATION >

MODE DOOR

Mode Door Cable Adjustment INFOID:0000000005396514

1. Remove glove box assembly and instrument lower cover (RH). Refer to IP-11.

2. Remove outer cable of mode door cable (1) from clamp (A).

3. Set mode control dial to VENT position.

4. Push main link (2) in the direction shown by the arrow, and then
carefully pull outer cable to controller side, and install clamp (A).

5. Operate mode control dial to insure that inner cable moves
smoothly.

CAUTION:

When clamping the outer cable, do not move the inner
cable.

SJIA0654E

6. Turn mode control dial to each position.

7. Confirm that discharge air comes out according to the air distribution table. Refer to MTC-20, "

Air Flow".

Discharge

Revision: January 2010 2010 Versa

MTC-66

< SERVICE INFORMATION >

BLOWER FAN RESISTOR

BLOWER FAN RESISTOR

Removal and Installation INFOID:0000000005396515

REMOVAL

1. Remove the instrument lower finisher. Refer to IP-11.

2. Remove the console side cover. Refer to IP-11

3. Remove the brake pedal assembly. Refer to BR-6

4. Disconnect the blower fan resistor connector.

5. Remove the blower fan resistor screws (A), then remove the
blower fan resistor (1).

INSTALLATION

Installation is in the reverse order of removal.

.

.

SJIA0656E

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B

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D

E

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Revision: January 2010 2010 Versa

MTC-67

HEATER CORE

< SERVICE INFORMATION >

HEATER CORE

Removal and Installation INFOID:0000000005396516

LJIA0200E

1. Heater pipe cover 2. Heater pipe clip 3. Heater core

A. Heater pipe cover screw B. Heater pipe clip screw

REMOVAL

1. Remove the A/C unit assembly. Refer to MTC-59, "Removal and Installation".

2. Remove the foot duct (left). Refer to MTC-70, "

3. Remove the heater pipe cover screw, then remove the heater pipe cover.

4. Remove the heater pipe clip screw, then remove the heater pipe clip.

5. Slide the heater core out of the A/C unit assembly.

Removal and Installation".

INSTALLATION

Installation is in the reverse order of removal.

Revision: January 2010 2010 Versa

MTC-68

< SERVICE INFORMATION >

AIR CONDITIONER FILTER

AIR CONDITIONER FILTER

Removal and Installation INFOID:0000000005396517

FUNCTION

The fresh air (A) and the recirculated air (B) drawn inside the pas­senger compartment by the blower fan (1) is kept clean (C) on either
mode by the air conditioner filter (2), located before the evaporator
(3), in the A/C unit assembly.

WJIA2253E

REPLACEMENT TIMING

Replace the air conditioner filter according to the maintenance schedules. Refer to MA-9.

NOTE:

The air conditioner filter caution label is located inside the glove box door.

REPLACEMENT PROCEDURES

1. Remove the glove box assembly. Refer to IP-11.

2. Compress the air conditioner filter (1) downward while sliding it
to the RH side of the vehicle to release the upper pawl.

3. Move the bottom of air conditioner filter (1) upward as shown to
release the bottom tab, then remove it.

A

B

C

D

E

F

G

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4. Replace the air conditioner filter with new one and install the new filter in the A/C unit assembly.

CAUTION:

Make sure that the air conditioner filter lower tab is fully seated, and that the air conditioner upper
pawl is locked into place securing the new filter into the A/C unit assembly.

5. Install the glove box assembly. Refer to IP-11

.

SJIA0652E

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Revision: January 2010 2010 Versa

MTC-69

DUCTS AND GRILLES

< SERVICE INFORMATION >

DUCTS AND GRILLES

Removal and Installation INFOID:0000000005396518

SJIA0657E

1. Side defroster duct (right) 2. Defroster nozzle 3. Side defroster duct (left)

4. Side defroster grille (left) 5. Instrument side panel (left) 6. Instrument panel and pad

7. Side ventilator assembly (left) 8. Cluster lid C 9. Side ventilator assembly (right)

10. Instrument finisher E 11. Instrument side panel (right) 12. Side defroster grille (right)

13. Side ventilator duct (right) 14. Center ventilator duct (right) 15. Center ventilator duct (left)

16. Side ventilator duct (left)

Floor Ducts - Canada Only

WJIA2198E

Revision: January 2010 2010 Versa

MTC-70

< SERVICE INFORMATION >

DUCTS AND GRILLES

1. Front floor duct 2. Rear floor duct (left) 3. Clip

4. Rear floor duct (right)

CENTER VENTILATOR GRILLES

Removal

1. Remove cluster lid C. Refer to IP-11.

2. Remove center ventilator grills (1) from cluster lid C using suit­able tool (A).

Installation

Installation is in the reverse order of removal.

SIDE VENTILATOR GRILLES (LH/RH)

Removal

1. Remove side ventilator assembly (LH). Refer to IP-11.

2. Remove side ventilator grille (LH) (1) using suitable tool (A).

ZJIA0661E

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B

C

D

E

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3. Remove side ventilator assembly (RH). Refer to IP-11

.

4. Remove the side ventilator grille (RH) screw.

5. Remove side ventilator grille (RH) (1) using suitable tool (A).

Installation

Installation is in the reverse order of removal.

DEFROSTER NOZZLE AND SIDE DEFROSTER DUCTS (LH/RH)

SJIA0658E

SJIA0659E

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Revision: January 2010 2010 Versa

MTC-71

DUCTS AND GRILLES

< SERVICE INFORMATION >

1. Side defroster duct (RH) 2. Side defroster duct (LH) 3. Defroster nozzle

A. Side defroster duct screw B. Defroster nozzle screw

WJIA2199E

Removal

1. Remove instrument upper finisher. Refer to IP-11.

2. Remove screws and then remove side defroster duct (RH) and side defroster duct (LH).

3. Remove screws, and then remove defroster nozzle.

Installation

Installation is in the reverse order of removal.

SIDE VENTILATOR DUCTS

Removal

1. Remove instrument panel and pad. Refer to IP-11.

2. Remove screws (A), and then remove side ventilator duct (left)
(1).

3. Remove screw (A) and clip (B), and then remove side ventilator
duct (right) (1).

SJIA0661E

SJIA0662E

Installation

Installation is in the reverse order of removal.

Revision: January 2010 2010 Versa

MTC-72

DUCTS AND GRILLES

< SERVICE INFORMATION >

CENTER VENTILATOR DUCTS

Removal

1. Remove instrument panel & pad. Refer to IP-11.

2. Remove screws (A), and then remove center ventilator ducts
(1).

A

B

C

D

Installation

Installation is in the reverse order of removal.

SIDE FOOT DUCTS

NOTE:

The side foot ducts are part of the A/C unit assembly case.

Removal

1. Remove A/C unit assembly. Refer to MTC-59.

2. Remove screws (A), and then remove side foot duct (LH) (1).

3. Remove screws (A), and then remove side foot duct (RH) (1).

SJIA0663E

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Installation

Installation is in the reverse order of removal.

FLOOR DUCTS

Removal

1. Remove front seats and center console assembly. Refer to SE-11 and IP-11.

Revision: January 2010 2010 Versa

MTC-73

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DUCTS AND GRILLES

< SERVICE INFORMATION >

2. Disengage pawls (A), and then remove front floor duct (1).

3. Peel back floor trim to a point where floor duct is visible.

4. Remove clips (A), and then remove rear floor duct (left) (1) and
rear floor duct (right) (2).

SJIA0667E

Installation

Installation is in the reverse order of removal.

SJIA0668E

Revision: January 2010 2010 Versa

MTC-74

< SERVICE INFORMATION >

REFRIGERANT LINES

REFRIGERANT LINES

HFC-134a (R-134a) Service Procedure INFOID:0000000005396519

SETTING OF SERVICE TOOLS AND EQUIPMENT

Discharging Refrigerant

WJIA2195E

A

B

C

D

E

F

G

H

1. Shut-off valve 2. A/C service valve 3. Recovery/recycling equipment

A. Preferred (best) method

WARNING:

Avoid breathing A/C refrigerant and oil vapor or mist. Exposure may irritate eyes, nose and throat.
Remove HFC-134a (R-134a) refrigerant from the A/C system using certified service equipment meeting
requirements of SAE J2210 HFC-134a (R-134a) recycling equipment or SAE J2201 HFC-134a (R-134a)
recovery equipment. If an accidental system discharge occurs, ventilate the work area before resum­ing service. Additional health and safety information may be obtained from the refrigerant and oil man­ufacturers.

Evacuating System and Charging Refrigerant

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1. Shut-off valve 2. A/C service valve 3. Recovery/recycling equipment

4. Refrigerant container (HFC-134a) 5. Weight scale (J-39650) 6. Evacuating vacuum pump (J-39699)

Revision: January 2010 2010 Versa

MTC-75

P

REFRIGERANT LINES

< SERVICE INFORMATION >

7. Manifold gauge set (J-39183) A. Preferred (best) method B. Alternative method

C. For charging

WJIA1923E

*1 MTC-17, "

ty in Compressor"

*4 MTC-46, "Insufficient Cooling"

Revision: January 2010 2010 Versa

Maintenance of Oil Quanti-

*2 MTC-92, "Checking of Refrigerant

Leaks"

MTC-76

*3 MTC-93, "Electronic Refrigerant

Leak Detector"

REFRIGERANT LINES

< SERVICE INFORMATION >

Component INFOID:0000000005396520

MR18DE - Type 1 and HR16DE

A

B

C

D

E

F

G

WJIA2200E

1. Evaporator 2. Expansion valve 3. Low-pressure service valve

4. High-pressure service valve 5. Refrigerant pressure sensor 6. Shaft seal

7. Drain hose

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Revision: January 2010 2010 Versa

MTC-77

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< SERVICE INFORMATION >

REFRIGERANT LINES

MR18DE - Type 2

WJIA2202E

1. Evaporator 2. Expansion valve 3. Low-pressure service valve

4. High-pressure service valve 5. Refrigerant pressure sensor 6. Shaft seal

7. Drain hose

Revision: January 2010 2010 Versa

MTC-78

< SERVICE INFORMATION >

REFRIGERANT LINES

Idler Pulley - Without A/C

A

B

C

D

E

F

G

WJIA2204E

1. Idler pulley 2. Bracket 3. Shaft

Refer to MTC-5, "Precaution for Refrigerant Connection".

Removal and Installation of Compressor - HR16DE INFOID:0000000 005396521

HR16DE

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ALIIA0093GB

REMOVAL

Revision: January 2010 2010 Versa

MTC-79

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REFRIGERANT LINES

< SERVICE INFORMATION >

1. Use the recovery/recycling equipment to evacuate the refrigerant. Refer to MTC-75, "HFC-134a (R-134a)

Service Procedure".

2. Disconnect the low-pressure flexible hose nut (A) and high-pres­sure flexible hose bolt (B) and remove the hoses from compres­sor.

CAUTION:

Cap or wrap the joint of compressor, low-pressure flexible
hose and high-pressure flexible hose with suitable material
such as vinyl tape to avoid the entry of air.

3. Disconnect the compressor harness connector (C)

SJIA0671E

4. Remove the engine undercover, using power tools.

5. Remove the A/C drive belt. Refer to EM-15, "

6. Remove the bolts (A) from the compressor (1), using power
tools.

7. Remove the compressor (1) downward from the engine com­partment.

Removal and Installation".

SJIA0672E

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

• Replace O-rings of low-pressure flexible hose and high-pressure flexible hose with new ones, and

apply compressor oil when installing.

• When recharging refrigerant, check for leaks. Refer to MTC-92, "

Checking of Refrigerant Leaks".

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Removal and Installation of Compressor - MR18DE INFOID:0000000005396522

MR18DE

A

B

C

D

E

F

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ALIIA0092GB

REMOVAL

1. Use the recovery/recycling equipment to evacuate the refrigerant. Refer to MTC-75, "HFC-134a (R-134a)

Service Procedure".

2. Remove the nut (A) for the low-pressure flexible hose (1) and
the bolt (B) for the high-pressure flexible hose (2) and remove
the hoses from the compressor.

CAUTION:

Cap or wrap the joint of compressor, low-pressure flexible
hose and high-pressure flexible hose with suitable material
such as vinyl tape to avoid the entry of air.

E1KIA0067ZZ

3. Remove the engine undercover, using power tools.

4. Remove A/C compressor belt. Refer to EM-132, "

5. Disconnect compressor connector.

6. Remove bolts (A) from compressor (1), using power tools.

7. Remove compressor (1) downward from the engine compart­ment.

Removal and Installation".

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INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

• Replace O-rings of low-pressure flexible hose and high-pressure flexible hose with a new ones, and
apply compressor oil when installing.

• When recharging refrigerant, check for leaks. Refer to MTC-92, "

Checking of Refrigerant Leaks".

Removal and Installation for Compressor Clutch - Type 1 INFOID:0000000005716140

REMOVAL

1. Remove the compressor. Refer to MTC-79, "Removal and Installation of Compressor - HR16DE".

2. Remove the center bolt by holding the clutch disc steady using

Tool.

Tool number : (J-44614)

3. Remove the clutch disc and shim(s).

CAUTION:

Retain shim(s) for installation.

WHA228

4. Remove the snap ring using external snap ring pliers.

5. Remove the pulley assembly using suitable tool (A).

CAUTION:

To prevent deformation of the pulley groove, the puller
claws should be hooked under (not into) the pulley groove.

6. Remove the magnet coil snap ring (A) using a suitable tool.

Then remove the magnet coil (1) from compressor shaft.

RHA072C

AWIIA1285ZZ

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INSPECTION AFTER REMOVAL

Clutch Disc

If the contact surface shows signs of damage due to excessive heat, replace clutch disc and pulley.

A

Pulley

Check the appearance of the pulley assembly. If the contact surface of the pulley shows signs of excessive
grooving, replace the clutch disc and pulley. The contact surfaces of the pulley assembly should be cleaned
with a suitable solvent before installation.

Coil

Check the magnet coil for a loose connection or cracked insulation.

INSTALLATION

1. Install the magnet coil.

CAUTION:

Be sure to align the magnet coil pin with the hole in the
compressor front head.

WHA213

2. Install the magnet coil (1) on the compressor shaft with the snap
ring (A) using suitable tool.

B

C

D

E

F

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3. Install the pulley assembly using Tool and a wrench, and then
install the snap ring using snap ring pliers.

Tool number : — (J-38873-A)

4. Install the clutch disc on the drive shaft, together with the original
shim(s). Press the clutch disc down using the drive plate
installer.

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5. Install the center bolt using Tool.

Center bolt : 12 N·m (1.2 kg-m, 9 ft-lb).

Tool number : (J-44614)

• After tightening the center bolt to specification, check that the
pulley rotates smoothly.

INSPECTION OF CLUTCH DISC TO PULLEY CLEARANCE

1. Check the clearance around the entire periphery of the clutch
disc.

WHA229

Clutch disc to
pulley clearance

: 0.3 - 0.6 mm (0.012 - 0.024 in)

RJIA1886E

2. If specified clearance is not obtained, replace compressor clutch.

BREAK-IN OPERATION

When replacing compressor clutch assembly, always conduct the break-in operation. This is done by engag­ing and disengaging the clutch about 30 times. Break-in operation raises the level of transmitted torque.

Removal and Installation for Compressor Clutch - Type 2 INFOID:0000000005716141

REMOVAL

1. Remove the compressor. Refer to MTC-81, "Removal and Installation of Compressor - MR18DE".

2. Remove the three rubber plugs (1) from the clutch disc (2). To
ease removal, apply some light lubricant to the three rubber
plugs (1).

NOTE:

The three rubber plug holes are used for attaching the suitable
tool when removing and installing the center bolt.

ALIIA0381ZZ

3. Remove the center bolt by holding the clutch disc steady using a
suitable tool (A).

4. Remove the clutch disc and shim(s).

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5. Remove the snap ring using external snap ring pliers.

6. Remove the pulley assembly using suitable tool (A).

CAUTION:

To prevent deformation of the pulley groove, the puller
claws should be hooked under (not into) the pulley groove.

A

B

C

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7. Remove the magnet coil snap ring (A) using a suitable tool.
Then remove the magnet coil (1) from compressor shaft.

ALIIA0379ZZ

INSPECTION AFTER REMOVAL

Clutch Disc

If the contact surface shows signs of damage due to excessive heat, replace clutch disc and pulley.

Pulley

Check the appearance of the pulley assembly. If the contact surface of the pulley shows signs of excessive
grooving, replace the clutch disc and pulley. The contact surfaces of the pulley assembly should be cleaned
with a suitable solvent before installation.

Coil

Check the magnet coil for a loose connection or cracked insulation.

INSTALLATION

1. Install the magnet coil.

CAUTION:

Be sure to align the magnet coil pin with the hole in the
compressor front head.

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2. Install the magnet coil (1) on compressor shaft with the snap ring
(A) using suitable tool.

3. Install the pulley assembly using Tool and a wrench, and then
install the snap ring using snap ring pliers.

Tool number : — (J-38873-A)

ALIIA0379ZZ

WJIA1016E

4. Install the clutch disc on the drive shaft, together with the original shim(s) using a suitable tool. Press the
clutch disc down using Tool.

5. Install the center bolt using suitable tool (A).

Center bolt : 12 N·m (1.2 kg-m, 9 ft-lb).

• After tightening the center bolt to specification, check that the

pulley rotates smoothly.

LJIA0201E

6. Install the three runner plugs (1) on the clutch disc (2). To ease
installation apply some light lubricant to the three rubber plugs
(1).

ALIIA0381ZZ

INSPECTION OF CLUTCH DISC TO PULLEY CLEARANCE

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1. Check the clearance around the entire periphery of the clutch
disc (1) and pulley (2) using a suitable tool (A).

A

Clutch disc to pulley
clearance (B)

: 0.3 - 0.6 mm (0.012 - 0.024 in)

• Measure the clearance for the type 1 compressor as shown.

AWIIA1251ZZ

2. If specified clearance is not obtained, replace compressor clutch.

BREAK-IN OPERATION

When replacing compressor clutch assembly, always conduct the break-in operation. This is done by engag­ing and disengaging the clutch about 30 times. Break-in operation raises the level of transmitted torque.

B

C

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Removal and Installation of Low-Pressure Flexible Hose INFOID:0000000005396523

REMOVAL

1. Use the recovery/recycling equipment to evacuate the refrigerant.

2. Remove engine cover (MR18DE only).

3. Remove cowl top cover. Refer to EI-22, "

4. Remove lower dash insulator.

5. Remove ground wire harness (1).

6. Remove bolt (A) and nut (B) from low-pressure flexible hose (2)
bracket.

Removal and Installation".

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7. Remove bolt (A), and then disconnect low-pressure flexible
hose (1) and high-pressure pipe (2).

CAUTION:

Cap or wrap the joint of the pipe with suitable material such
as vinyl tape to avoid the entry of air.

8. Remove nut (A), and then remove low-pressure flexible hose (1)
from compressor (2).

CAUTION:

Cap or wrap the joint of the pipe with suitable material such
as vinyl tape to avoid the entry of air.

SJIA0644E

SJIA0676E

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

• Replace O-rings for A/C piping with new ones, and apply compressor oil when installing.

• When recharging refrigerant, check for leaks.

Removal and Installation of High-Pressure Flexible Hose INFOID:0000000005396524

REMOVAL

1. Use the recovery/recycling equipment to evacuate the refrigerant.

2. Remove high-pressure flexible hose (1) bolt (A) from condenser
(2).

SJIA0677E

3. Remove bolt (A), and then remove high-pressure flexible hose
(1) from compressor (2).

CAUTION:

Cap or wrap the joint of the pipe with suitable material such
as vinyl tape to avoid the entry of air.

SJIA0678E

INSTALLATION

Installation is in the reverse order of removal.

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CAUTION:

• Replace O-rings of high-pressure flexible hose with a new ones, and apply compressor oil when
installing.

• When recharging refrigerant, check for leaks.

A

Removal and Installation of High-Pressure Pipe INFOID:0000000005396525

SJIA0679E

1. High-pressure pipe A. High-pressure pipe clips

REMOVAL

1. Remove low-pressure flexible hose. Refer to MTC-87, "Removal and Installation of Low-Pressure Flexible

Hose".

2. Remove high-pressure pipe from the clips.

3. Remove high-pressure pipe bolt (A), and then remove high-

pressure pipe (1) from condenser (2).

CAUTION:

Cap or wrap the joint of the pipe with suitable material such
as vinyl tape to avoid the entry of air.

B

C

D

E

F

G

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INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

• Replace O-rings of high-pressure pipe with a new ones, and apply compressor oil when installing.

• When recharging refrigerant, check for leaks.

Removal and Installation of Refrigerant Pressure Sensor INF OID:0000000005396526

REMOVAL

1. Use the recovery/recycling equipment to evacuate the refrigerant.

2. Disconnect connector, and then remove refrigerant pressure

sensor (1) from condenser (2).

CAUTION:

When working, be careful not to damage the condenser
fins.

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INSTALLATION

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Installation is in the reverse order of removal.

CAUTION:

• Replace O-rings of refrigerant pressure sensor with a new one, and apply compressor oil when
installing.

• When recharging refrigerant, check for leaks.

Removal and Installation of Condenser INFOID:0000000005396527

REMOVAL

1. Remove the three upper headlamp bolts to reposition the headlamps out of the way.

2. Remove the radiator core support upper. Refer to BL-19, "

3. Remove high-pressure flexible hose and high-pressure pipe from condenser. Refer to MTC-88, "

and Installation of High-Pressure Flexible Hose" and MTC-89, "Removal and Installation of High-Pressure
Pipe".

CAUTION:

Cap or wrap the joint of the pipe with suitable material such as vinyl tape to avoid the entry of air.

4. Disconnect refrigerant pressure sensor connector.

5. Tilt radiator toward rear of vehicle, and then remove condenser

(1) from between radiator and radiator core support upper.

CAUTION:

Be careful not to damage the core surface of condenser and
radiator.
NOTE:

MR18DE shown, HR16DE similar.

Removal and Installation".

Removal

SJIA0682E

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

• Replace O-rings for A/C piping with new ones, and apply compressor oil when installing.

• When recharging refrigerant, check for leaks.

Removal and Installation of Liquid Tank INFOID:0000000005396528

REMOVAL

1. Remove the condenser. Refer to MTC-90, "Removal and Installation of Condenser".

2. Clean liquid tank and its surrounding area, and remove dirt and rust from liquid tank.

CAUTION:

Be sure to clean carefully.

3. Remove bolts (A) and (B) from liquid tank.

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4. Remove liquid tank bracket (1) from protruding part of con­denser (2).

5. Slide liquid tank (3) upward, and then remove liquid tank (3).

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

• Make sure liquid tank bracket (2) is securely installed at pro-

trusion of condenser (3). [Make sure liquid tank bracket (2)
does not move to a position below center of liquid tank (1).]

• Replace O-rings for A/C piping with new ones, and apply com-

pressor oil when installing.

• When recharging refrigerant, check for leaks. Refer to MTC-

92, "Checking of Refrigerant Leaks".

A

B

C

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E

F

G

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Removal and Installation of Evaporator INFOID:0000000005396529

REMOVAL

1. Remove A/C unit assembly. Refer to MTC-59, "Removal and Installation".

CAUTION:

Cap or wrap the joint of the pipe with suitable material such as vinyl tape to avoid the entry of air.

2. Remove air conditioner filter. Refer to MTC-69, "

3. Remove foot duct (right). Refer to MTC-70, "

4. Remove screws (A), and then remove expansion valve cover
(1).

5. Remove screws (A), and then remove evaporator cover (1).

Removal and Installation".

Removal and Installation".

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6. Remove evaporator (1) with lower blower case (2) from A/C unit
assembly.

7. Mark the position of the thermo control amp. if reusing the evap­orator and then remove thermo control amp. (3) from evaporator
(1), if equipped (MR18DE - TYPE 2 systems).

8. Remove evaporator (1) from lower blower case (2).

SJIA0599J

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

• Replace O-rings for A/C piping with new ones, and apply compressor oil when installing.

• If reusing the evaporator, install the thermo control amp. at the position marked when removing the

thermo control amp., if equipped (MR18DE - TYPE 2 systems).

• When recharging refrigerant, check for leaks.

Removal and Installation of Expansion Valve INFOID:0000000005396530

REMOVAL

1. Use the recovery/recycling equipment to evacuate the refrigerant.

2. Remove cowl top cover. Refer to EI-22, "

3. Remove lower dash insulator.

4. Disconnect low-pressure flexible hose and high-pressure pipe from evaporator. Refer to MTC-59,

"Removal and Installation".

5. Remove expansion valve bolts (A), and then remove expansion
valve (1).

CAUTION:

Cap or wrap the joint of the pipe with suitable material such
as vinyl tape to avoid the entry of air.

Removal and Installation".

SJIA0683E

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

• Replace O-rings of evaporator with new ones, and apply compressor oil when installing.

• When recharging refrigerant, check for leaks.

Checking of Refrigerant Leaks INFOID:0000000005396531

Perform a visual inspection of all refrigeration parts, fittings, hoses and components for signs of A/C oil leak­age, damage and corrosion. A/C oil leakage may indicate an area of refrigerant leakage. Allow extra inspec­tion time in these areas when using either an electronic refrigerant leak detector or fluorescent dye leak
detector.
If dye is observed, confirm the leak with an electronic refrigerant leak detector. It is possible a prior leak was
repaired and not properly cleaned.
When searching for leaks, do not stop when one leak is found but continue to check for additional leaks at all
system components and connections.
When searching for refrigerant leaks using an electronic leak detector, move the probe along the suspected
leak area at 25 to 50 mm (1 to 2 in) per second and no further than 1/4 inch from the component.

CAUTION:

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Moving the electronic leak detector probe slower and closer to the suspected leak area will improve
the chances of finding a leak.

Checking System for Leaks Using the Fluorescent Leak Detector INFOID:0000000005396532

A

1. Check A/C system for leaks using the UV lamp and safety goggles J-42220 in a low sunlight area (area
without windows preferable). Illuminate all components, fittings and lines. The dye will appear as a bright
green/yellow area at the point of leakage. Fluorescent dye observed at the evaporator drain opening indi­cates an evaporator core assembly (tubes, core or expansion valve) leak.

2. If the suspected area is difficult to see, use an adjustable mirror or wipe the area with a clean shop rag or
cloth, with the UV lamp for dye residue.

3. After the leak is repaired, remove any residual dye using dye cleaner J-43872 to prevent future misdiag­nosis.

4. Perform a system performance check and verify the leak repair with an approved electronic refrigerant
leak detector.

NOTE:

Other gases in the work area or substances on the A/C components, for example, anti-freeze, windshield
washer fluid, solvents and oils, may falsely trigger the leak detector. Make sure the surfaces to be checked are
clean.
Clean with a dry cloth or blow off with shop air.
Do not allow the sensor tip of the detector to contact with any substance. This can also cause false readings
and may damage the detector.

Dye Injection INFOID:0000000005396533

(This procedure is only necessary when recharging the system or when the compressor has seized and was
replaced.)

2

1. Check A/C system static (at rest) pressure. Pressure must be at least 345 kPa (3.45 bar, 3.52 kg/cm
psi).

2. Pour one bottle (1/4 ounce / 7.4 cc) of the A/C refrigerant dye into the injector tool J-41459.

3. Connect the injector tool to the A/C low-pressure side service fitting.

4. Start engine and switch A/C ON.

5. When the A/C operating (compressor running), inject one bottle (1/4 ounce / 7.4 cc) of fluorescent dye
through the low-pressure service valve using dye injector tool J-41459 (refer to the manufacture’s operat­ing instructions).

6. With the engine still running, disconnect the injector tool from the service fitting.

CAUTION:

Be careful the A/C system or replacing a component, pour the dye directly into the open system
connection and proceed with the service procedures.

7. Operate the A/C system for a minimum of 20 minutes to mix the dye with the system oil. Depending on the
leak size, operating conditions and location of the leak, it may take from minutes to days for the dye to
penetrate a leak and become visible.

, 50

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Electronic Refrigerant Leak Detector INFOID:0000000005396534

PRECAUTIONS FOR HANDLING LEAK DETECTOR

When performing a refrigerant leak check, use an A/C electrical leak
detector (SST) or equivalent. Ensure that the instrument is calibrated
and set properly per the operating instructions.
The leak detector is a delicate device. In order to use the leak detec­tor properly, read the operating instructions and perform any speci­fied maintenance.

AHA281A

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1. Position probe approximately 5 mm (3/16 in) away from point to
be checked.

2. When testing, circle each fitting completely with probe.

SHA707EA

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3. Move probe along component approximately 25 to 50 mm (1 to
2 in) per second.

SHA708EA

CHECKING PROCEDURE

To prevent inaccurate or false readings, make sure there is no refrigerant vapor, shop chemicals, or cigarette
smoke in the vicinity of the vehicle. Perform the leak test in calm area (low air/wind movement) so that the
leaking refrigerant is not dispersed.

1. Turn engine OFF.

2. Connect a suitable A/C manifold gauge set to the A/C service ports.

3. Check if the A/C refrigerant pressure is at least 345 kPa (3.45 bar, 3.52 kg/cm
than specification, recover/evacuate and recharge the system with the specified amount of refrigerant.

NOTE:

At temperatures below 16°C, leaks may not be detected since the system may not reach 345 kPa (3.45
bar, 3.52 kg/cm

2

, 50 psi).

4. Perform the leak test from the high-pressure side (compressor discharge a to evaporator inlet f) to the
low-pressure side (evaporator drain hose g to shaft seal k). Refer to MTC-77, "
leak check for the following areas carefully. Clean the component to be checked and move the leak
detected probe completely around the connection/component.

• Compressor

Check the fitting of high- and low-pressure flexible hoses, relief valve and shaft seal.

• Condenser

Check the fitting of high-pressure flexible hose and pipe, refrigerant pressure sensor.

• Liquid tank

Check the refrigerant connection.

• Service valves

2

, 50 psi) above 16°C. If less

Component". Perform a

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Check all around the service valves. Ensure service valve caps are secured on the service valves (to
prevent leaks).

NOTE:

After removing A/C manifold gauge set from service valves, wipe any residue from valves to prevent any
false readings by leak detector.

• Cooling unit (Evaporator)
With engine OFF, turn blower fan on “High” for at least 15 seconds to dissipate any refrigerant trace in
the cooling unit. Wait a minimum of 10 minutes accumulation time (refer to the manufacturer’s recom­mended procedure for actual wait time) before inserting the leak detector probe into the drain hose.
Keep the probe inserted for at least 10 seconds. Use caution not to contaminate the probe tip with water
or dirt that may be in the drain hose.

5. If a leak detector detects a leak, verify at least once by blowing compressed air into area of suspected
leak, then repeat check as outlined above.

6. Do not stop when one leak is found. Continue to check for additional leaks at all system components.
If no leaks are found, perform steps 7-10.

7. Start engine.

8. Set the heater A/C control as follows;

a. A/C switch: ON
b. Mode control dial position: VENT (Ventilation)
c. Intake door lever position: Recirculation
d. Max. cold temperature
e. Fan speed: High

9. Run engine at 1,500 rpm for at least 2 minutes.

10. Turn engine off and perform leak check again following steps 4
through 6 above.
Refrigerant leaks should be checked immediately after stopping
the engine. Begin with the leak detector at the compressor. The
pressure on the high-pressure side will gradually drop after
refrigerant circulation stops and pressure on the low-pressure
side will gradually rise, as shown in the graph. Some leaks are
more easily detected when pressure is high.

11. Before connecting recovery/recycling equipment to vehicle,
check recovery/recycling equipment gauges. No refrigerant
pressure should be displayed. If pressure is displayed, recover
refrigerant from equipment lines.

12. Discharge A/C system using approved refrigerant recovery/recycling equipment. Repair the leaking fitting
or component if necessary.

13. Evacuate and recharge A/C system and perform the leak test to confirm no refrigerant leaks.

14. Perform A/C performance test to ensure system works properly.

SHA839E

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< SERVICE INFORMATION >

SERVICE DATA AND SPECIFICATIONS (SDS)

Compressor INFOID:0000000005396535

Application MR18DE - TYPE 1 and HR16DE MR18DE - TYPE 2

Compressor model Calsonic Kansei make CR-10 Calsonic Kansei make CSV511

Type Vane rotary Variable displacement swash plate

Displacement

3

(in3) / revolution

cm

Cylinder bore × stroke
mm (in)

Direction of rotation Clockwise (viewed from drive end)

Drive belt Poly-V Ribbed 6-Groove

Oil INFOID:0000000005396536

Application MR18DE - TYPE 1 and HR16DE MR18DE - TYPE 2

Compressor model Calsonic Kansei make CR-10 Calsonic Kansei make CSV511

Type NISSAN A/C System Oil Type R NISSAN A/C System Oil Type S

Capacity
m (US fl oz,

lmp fl oz)

Total in system 120 (4.1, 4.2) 100 (3.4, 3.5)

Compressor (service
part) charging
amount

maximum 96 (5.86) 105 (6.41)

maximum — 34.8 (1.37) × 22.1 (0.87)

Refer to MTC-17, "

Maintenance of Oil Quanti-

ty in Compressor" .

Refer to MTC-17, "

Quantity in Compressor" .

Maintenance of Oil

Refrigerant INFOID:0000000005396537

Type HFC-134a (R-134a)

Capacity
kg (lb)

0.45 ± 0.05 (0.99 ± 0.11)

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