Nissan VERSA 2009 Owner's Manual

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AIR CONDITIONER

Revision: October 2008

2009 Versa

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 ........................................13

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-II Function (BCM) ..................................22

How to Perform Trouble Diagnosis for Quick and

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

Component Parts and Harness Connector Loca-

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

Schematic ...............................................................25

Wiring Diagram - Heater - ....................................... 26

Wiring Diagram - A/C,M - ........................................27

Operational Check ...................................................30

Mode Door ...............................................................31

Air Mix Door .............................................................32

Intake Door ..............................................................33

Front Blower Motor Circuit .......................................33

Magnet Clutch Circuit (If Equipped) .........................37

Insufficient Cooling ..................................................45

Insufficient Heating ..................................................52

Noise .......................................................................53

CONTROLLER ..................................................55

Removal and Installation .........................................55

Disassembly and Assembly .....................................56

THERMO CONTROL AMPLIFIER ....................57

Removal and Installation .........................................57

A/C UNIT ASSEMBLY ......................................58

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

Disassembly and Assembly .....................................60

BLOWER MOTOR ............................................62

Removal and Installation .........................................62

INTAKE DOOR ..................................................63

Intake Door Cable Adjustment .................................63

AIR MIX DOOR .................................................64

Air Mix Door Cable Adjustment ...............................64

MODE DOOR ....................................................65

Mode Door Cable Adjustment .................................65

BLOWER FAN RESISTOR ...............................66

Removal and Installation .........................................66

HEATER CORE .................................................67

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

AIR CONDITIONER FILTER .............................68

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

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DUCTS AND GRILLES ...................................... 69

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2009 Versa

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

REFRIGERANT LINES ...................................... 74

HFC-134a (R-134a) Service Procedure ................. 74

Component ............................................................. 76

Removal and Installation of Compressor -

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

Removal and Installation of Compressor -

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

Removal and Installation of Low-Pressure Flexi-

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

Removal and Installation of High-Pressure Flexi-

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

Removal and Installation of High-Pressure Pipe .... 83

Removal and Installation of Refrigerant Pressure

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

Removal and Installation of Condenser .................. 84

Removal and Installation of Liquid Tank ................. 84

Removal and Installation of Evaporator .................. 85

Removal and Installation of Expansion Valve ......... 86

Checking of Refrigerant Leaks ................................ 86

Checking System for Leaks Using the Fluorescent

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

Dye Injection ........................................................... 87

Electronic Refrigerant Leak Detector ...................... 87

SERVICE DATA AND SPECIFICATIONS

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

Compressor ............................................................ 90

Oil ............................................................................ 90

Refrigerant .............................................................. 90

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PRECAUTIONS

SERVICE INFORMATION

PRECAUTIONS

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" INFOID:0000000004784399

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.

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Precaution Necessary for Steering Wheel Rotation After Battery Disconnect

INFOID:0000000004687764

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:0000000004307042

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:0000000004307043

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:0000000004307044

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.

Oil Precaution INFOID:0000000004307045

• 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.

- 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.

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

Precaution for Refrigerant Connection INFOID:0000000004307046

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

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

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.

SJIA1327E

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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-90, "

• 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

Oil".

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Precaution for Service of Compressor INFOID:0000000004307047

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

RHA861F

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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:0000000004307048

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.

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.

SERVICE HOSES

RHA270DA

SHA533D

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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

RHA272D

RHA273D

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:0000000004307049

• 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

HFC-134a (R-134a) Service Tool and Equipment INFOID:0000000004307051

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)

— (—) NISSAN A/C System Oil Type R

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

— (J-41995) Electronic refrigerant leak detector

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

S-NT200

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

S-NT203

Capacity:

• Air displacement: 4 CFM

• Micron rating: 20 microns

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

• 1/2”-16 ACME

Commercial Service Tool INFOID:0000000004307052

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PREPARATION

(Kent-Moore No.) Tool name

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

RJIA0197E

Power tool Loosening bolts and nuts

PIIB1407E

Description

For checking refrigerant purity and system contamination

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REFRIGERATION SYSTEM

Refrigerant Cycle INFOID:0000000004307053

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:0000000004307054

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 about 134 kPa (1.34 bar, 1.4 kg/cm

, 20 psi).

, 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.

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

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REFRIGERATION SYSTEM

Component Part Location

INFOID:0000000004307055

SJIA0698E

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OIL

Maintenance of Oil Quantity in Compressor INFOID:0000000004307056

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

OIL ADJUSTING PROCEDURE FOR COMPRESSOR REPLACEMENT

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MTC-17

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

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.

MTC-18

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

AIR CONDITIONER CONTROL

Control Operation INFOID:0000000004307057

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

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.

MTC

MTC-19

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

AIR CONDITIONER CONTROL

Discharge Air Flow

Mode door position

INFOID:0000000004307058

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:0000000004307059

SWITCHES AND THEIR CONTROL FUNCTION

WJIA2249E

MTC-20

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

AIR CONDITIONER CONTROL

WJIA2234E

MTC

MTC-21

TROUBLE DIAGNOSIS

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

CONSULT-II Function (BCM) INFOID:0000000004784392

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

BCM diagnostic

test item

Inspection by part

SELF-DIAG RESULTS Displays BCM self-diagnosis results.

CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.

DATA MONITOR

Display Item List

Monitor item name

“operation or unit”

IGN ON SW “ON/OFF”

FAN ON SIG “ON/OFF”

AIR COND SW “ON/OFF”

Diagnostic mode Description

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.

ECU PART NUMBER BCM part number can be read.

CONFIGURATION Performs BCM configuration read/write functions.

Displays “IGN Position (ON)/OFF, ACC Position (OFF)” status as judged from ignition switch signal through the CAN communication.

Displays “FAN (ON)/FAN (OFF)” status as judged from blower fan motor switch signal through CAN communication.

Displays “COMP (ON)/COMP (OFF)” status as judged from air conditioner switch signal through the CAN communication.

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

Contents

How to Perform Trouble Diagnosis for Quick and Accurate Repair INFOID:0000000004307062

WORK FLOW

SHA900E

*1 MTC-30, "Operational Check"

SYMPTOM TABLE

Symptom Reference Page

Air outlet does not change. Go to Trouble Diagnosis Procedure for Mode Door. MTC-31

Discharge air temperature does not change.

Intake door does not change. Go to Trouble Diagnosis Procedure for Intake Door. MTC-33

Blower motor operation is malfunctioning. Go to Trouble Diagnosis Procedure for Blower Motor. MTC-33

Go to Trouble Diagnosis Procedure for Air Mix Door. MTC-32

MTC-22

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

TROUBLE DIAGNOSIS

Symptom Reference Page

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

Insufficient cooling Go to Trouble Diagnosis Procedure for Insufficient Cooling. MTC-45

Insufficient heating Go to Trouble Diagnosis Procedure for Insufficient Heating. MTC-52

Noise Go to Trouble Diagnosis Procedure for Noise. MTC-53

Go to Trouble Diagnosis Procedure for Magnet Clutch. MTC-37

Component Parts and Harness Connector Location INFOID:0000000004307063

ENGINE COMPARTMENT

1. Refrigerant pressure sensor E17 (if equipped)

PASSENGER COMPARTMENT

2. A/C compressor F3 (if equipped)

MTC

WJIA2235E

MTC-23

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

TROUBLE DIAGNOSIS

1. Front air control M33 2. Front blower motor resistor M151 3. Thermo control amp. jumper connec-

4. Thermo control amp. M42 (without CVT), (if equipped)

WJIA2302E

tor (with CVT), (if equipped)

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

MTC-24

TROUBLE DIAGNOSIS

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

Schematic INFOID:0000000004307064

MTC

MTC-25

AAIWA0053GB

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

TROUBLE DIAGNOSIS

Wiring Diagram - Heater -

WITHOUT A/C

INFOID:0000000004307065

WJWA0485E

MTC-26

TROUBLE DIAGNOSIS

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

Wiring Diagram - A/C,M - INFOID:0000000004307066

MTC

MTC-27

WJWA0484E

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

TROUBLE DIAGNOSIS

AAIWA0052GB

MTC-28

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

TROUBLE DIAGNOSIS

MTC

WJWA0488E

MTC-29

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

TROUBLE DIAGNOSIS

Operational Check

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

Conditions : Engine running at normal operating temperature

CHECKING BLOWER

LJWA0021E

INFOID:0000000004307067

MTC-30

TROUBLE DIAGNOSIS

Revision: October 2008

2009 Versa

< 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-33, " If OK, continue the check.

Front Blower Motor Circuit".

CHECKING DISCHARGE AIR

1. Turn 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".

If NG, go to trouble diagnosis procedure for MTC-31, " 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-33, " 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-45, " 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-52, " If OK, continue the check.

Insufficient Heating".

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-37, " If OK, continue the check.

Magnet Clutch Circuit (If Equipped)".

Discharge

MTC

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-37, " If all operational checks are OK (symptom cannot be duplicated), go to MTC-22, "

Diagnosis for Quick and Accurate Repair" and perform tests as outlined. If symptom appears, refer to MTC-22, "How to Perform Trouble Diagnosis for Quick and Accurate Repair" and perform applicable trouble diagnosis

procedures.

Mode Door INFOID:0000000004307068

SYMPTOM: Air outlet does not change.

INSPECTION FLOW

Magnet Clutch Circuit (If Equipped)".

MTC-31

How to Perform Trouble

TROUBLE DIAGNOSIS

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

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.

2.PERFORM COMPLETE OPERATIONAL CHECK

Discharge

Perform a complete operational check and check for any symptoms. Refer to MTC-30, " Can a symptom be duplicated?

YES >> Refer to MTC-22, "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-30, "

Trouble Diagnosis for Quick and Accurate Repair" .

NG >> Repair or adjust mode door control cable. Refer to MTC-65, "

Operational Check". If other symptoms exist, refer to MTC-22, "How to Perform

Mode Door Cable Adjustment".

Air Mix Door INFOID:0000000004307069

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.

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-30, " Can a symptom be duplicated?

YES >> Refer to MTC-22, "How to Perform Trouble Diagnosis for Quick and Accurate Repair". NO >> System OK.

4.CHECK FOR SERVICE BULLETINS

Check for any service bulletins.

>> GO TO 2.

Operational Check".

MTC-32

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

TROUBLE DIAGNOSIS

>> 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-30, "Operational

Check" If other symptoms exist, refer to MTC-22, "How to Perform Trouble Diagnosis for Quick and Accurate Repair".

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

Air Mix Door Cable Adjustment".

Intake Door INFOID:0000000004307070

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-30, " Can a symptom be duplicated?

YES >> Refer to MTC-22, "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.

MTC

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-30, "Operational

NG >> Repair or adjust control linkage. Refer to MTC-63, "

Front Blower Motor Circuit INFOID:0000000004307071

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.

>> GO TO 4.

Check" . If other symptoms exist, refer to MTC-22, "How to Perform Trouble Diagnosis for Quick and Accurate Repair" .

Intake Door Cable Adjustment" .

MTC-33

TROUBLE DIAGNOSIS

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

NO >> GO TO 2.

2.PERFORM COMPLETE OPERATIONAL CHECK

Perform a complete operational check and check for any symptoms. Refer to MTC-30, " Can a symptom be duplicated?

YES >> Refer to MTC-22, "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-30, "Operational

Check". If other symptoms exist, refer to MTC-22, "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.

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 i na ls

(+) (−)

Connector Terminal

Front blower

motor: M62

OK or NG

OK >> GO TO 6.

1 Battery voltage

Ground

Volta ge

(Approx.)

WJIA2259E

WJIA2228E

MTC-34

TROUBLE DIAGNOSIS

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

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

Refer to PG-3, "

• 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

MTC

WJIA2264E

OK or NG

OK >> GO TO 7. NG >> Replace front blower motor. Refer to MTC-62, "

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

1 - 2 : Continuity should exist.

and Installation".

MTC-35

Removal

WJIA2230E

TROUBLE DIAGNOSIS

Revision: October 2008

2009 Versa

< 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.

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

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-58, "

Removal and Installation".

9.CHECK FAN SWITCH GROUND CIRCUIT

AWIIA0339ZZ

SJIA0732E

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.

Connector Terminal Connector Terminal

Front air control:

M33

11 2

12 3

13 4

Front blower

motor resistor:

OK or NG

Continuity

SJIA0733E

Yes

MTC-36

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

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

11.CHECK FAN SWITCH

TROUBLE DIAGNOSIS

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

OK or NG

OK >> Replace the front blower motor resistor. Refer to MTC-66, "Removal and Installation". NG >> Replace front air control. Refer to MTC-58, "

11 Fan control dial: 2-speed

12 Fan control dial: 3-speed

13 Fan control dial: 4-speed

Yes

SJIA0732E

Removal and Installation".

Magnet Clutch Circuit (If Equipped) INFOID:0000000004307072

SYMPTOM: Magnet clutch does not engage.

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-30, " Does another symptom exist?

YES >> Refer to MTC-22, "How to Perform Trouble Diagnosis for Quick and Accurate Repair". NO >> System OK.

Operational Check".

3.CHECK FOR SERVICE BULLETINS

MTC

Check for any service bulletins.

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, "

5.CHECK REFRIGERANT PRESSURE

Check refrigerant pressure with manifold gauge connected. Refer to MTC-45, " OK or NG

OK >> GO TO 6. NG >> Perform trouble diagnosis for unusual pressure. Refer to MTC-45, "

>> GO TO 4.

EM-136, "

Checking" (HR16DE) or EM-136, "Checking Drive Belts"

Removal and Installation" (MR18DE).

MTC-37

Removal and Installation" (HR16DE) or

Insufficient Cooling".

TROUBLE DIAGNOSIS

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

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-30, "Operational

Check". If other symptoms exist, refer to MTC-22, "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 com- pressor turns ON. The compressor turns OFF when intake air temperatures are lower than 2°C (36°F).

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-19, " Does the magnet clutch operate?

YES >> GO TO 5. NO >> Check 10A fuse (No. 42, located in the IPDM E/R). Refer to PG-23, "

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

SJIA0741E

WJIA2250E

IPDM E/R Terminal

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

MTC-38

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

TROUBLE DIAGNOSIS

: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-78, "Removal and

Installation of Compressor - HR16DE" or MTC-80, "Removal and Installation of Compressor - MR18DE".

NG >> GO TO 4.

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

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.

SJIA0743E

1 - 11 :Continuity should exist

OK or NG

OK >> Replace IPDM E/R. Refer to PG-27, "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

OK or NG

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

CONSULT-II Function (BCM)".

7.CHECK CIRCUIT CONTINUITY BETWEEN FRONT AIR CONTROL AND BCM

MTC

WJIA2233E

MTC-39

TROUBLE DIAGNOSIS

Revision: October 2008

2009 Versa

< 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

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-1007, "

Diagnosis Procedure" (MR type 1), EC-1529,

"Diagnosis Procedure" (MR type 2) or EC-458, "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

SJIA0759E

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

CONSULT-II Function (BCM)".

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.

10.CHECK BCM INPUT (FAN ON) SIGNAL

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

(-)

Voltage

(Approx.)

SJIA0750E

OK or NG

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

11.CHECK CIRCUIT CONTINUITY BETWEEN BCM AND FRONT AIR CONTROL

ZJIA0583J

MTC-40

TROUBLE DIAGNOSIS

Revision: October 2008

2009 Versa

< 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.

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-56, "

Disassem-

bly and Assembly".

13.CHECK FRONT AIR CONTROL GROUND CIRCUIT

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

9 - Ground :Continuity should exist

SJIA0751E

SJIA0753E

MTC

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

MTC-41

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

Te rm i na ls

(+)

Connector Terminal

(-)

TROUBLE DIAGNOSIS

Volta ge

(Approx.)

Front air control:

M33

1Ground

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-56, "

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

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

MTC-42

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

TROUBLE DIAGNOSIS

Te rm i na ls

(+)

Connector Terminal

Thermo control

amp.: M42

(-)

3Ground

Voltage

(Approx.)

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.

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-72

• 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-57,

"Removal and Installation".

NG >> Repair harness or connector.

SJIA0763E

MTC

SJIA0762E

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

SJIA0763E

MTC-43

TROUBLE DIAGNOSIS

Revision: October 2008

2009 Versa

< 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

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-18, "Removal and Installation of BCM". NG >> Repair or replace malfunctioning part(s).

23.CHECK DEFROST A/C SWITCH CIRCUIT

SJIA0764E

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-18, "Removal and Installation of BCM". NG >> GO TO 24.

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

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.

WJIA2252E

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

WJIA2254E

MTC-44

TROUBLE DIAGNOSIS

Revision: October 2008

2009 Versa

< 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:0000000004307073

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-30, " Does another symptom exist?

YES >> Refer to MTC-22, "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.

MTC

>> 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, "

136, "Removal and Installation" (MR18DE).

Checking" (HR16DE) or EM-136, "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-64, " 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-887, " TYPE 1), EC-1409, " (HR16DE).

Does cooling fan motor operate correctly?

YES >> GO TO 7. NO >> Check cooling fan motor. Refer to EC-890, "

nosis Procedure" (MR TYPE 2) or EC-368, "Component Function Check" (HR16DE).

Overall Function Check" (MR TYPE 2) or EC-368, "Component Function Check"

Diagnosis Procedure" (MR TYPE 1), EC-1412, "Diag-

Overall Function Check" (MR

MTC-45

TROUBLE DIAGNOSIS

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

7.CHECK FOR EVAPORATOR FREEZE UP

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-30, "Operational

Check". If other symptoms exist, refer to MTC-22, "How to Perform Trouble Diagnosis for Quick and Accurate Repair".

NG >> Repair air leaks.

DIAGNOSTIC WORK FLOW

MTC-46

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

TROUBLE DIAGNOSIS

*1 MTC-87, "Checking System for

Leaks Using the Fluorescent Leak Detector"

*4 "TROUBLE DIAGNOSIS FOR AB-

NORMAL PRESSURE"

*2 MTC-78, "Removal and Installation of

Compressor - HR16DE" or MTC-80, "Removal and Installation of Compressor - MR18DE"

*5 MTC-32, "

Air Mix Door"

AWIIA0999GB

*3 "PERFORMANCE CHART"

MTC

MTC-47

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

TROUBLE DIAGNOSIS

*1 MTC-62, "Removal and Installation" *2 MTC-33, "Front Blower Motor Circuit" *3 MTC-78, "Removal and Installation of

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

136, "Checking Drive Belts"

(MR18DE)

PERFORMANCE CHART

Test Condition

*5 MTC-78, "

Compressor - HR16DE" or MTC-80, "Removal and Installation of Compressor - MR18DE"

Removal and Installation of

MTC-48

AWIIA1000GB

Compressor - HR16DE" or MTC-80, "Removal and Installation of Compressor - MR18DE"

TROUBLE DIAGNOSIS

Revision: October 2008

2009 Versa

< 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

(Ventilation) set

(Recirculation) set

Max. speed set

Recirculating-to-discharge Air Temperature Table

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

, 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)

MTC

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).

MTC-49

TROUBLE DIAGNOSIS

Revision: October 2008

2009 Versa

< 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

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.

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.

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

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.

MTC-50

TROUBLE DIAGNOSIS

Revision: October 2008

2009 Versa

< 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-86, "

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-37, "

Clutch Circuit (If Equipped)"

• Replace compressor.

• Repair evaporator fins.

• Replace evaporator.

• Refer to MTC-33, "

Blower Motor Circuit" .

Checking of

Magnet

Front

MTC

Low-pressure Side Sometimes Becomes Negative

Low-pressure side sometimes becomes negative.

Low-pressure Side Becomes Negative

Gauge indication Refrigerant cycle Probable cause Corrective action

• 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.

AC354A

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.

MTC-51

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

Gauge indication Refrigerant cycle Probable cause Corrective action

Low-pressure side becomes negative.

AC362A

TROUBLE DIAGNOSIS

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.

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 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:0000000004307074

SYMPTOM: Insufficient heating

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-30, " Does another symptom exist?

YES >> Refer to MTC-22, "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-11, "

2. Check hoses for leaks or kinks.

3. Check Radiator cap. Refer to CO-14, "

Cap" (MR18DE).

OK or NG

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

5.CHECK AIR MIX DOOR CABLE

Check air mix door cable operation. Refer to MTC-64, " OK or NG

Inspection" (HR16DE) or CO-35, "Inspection" (MR18DE).

Checking Radiator Cap" HR16DE or CO-40, "Checking Radiator

Air Mix Door Cable Adjustment" .

MTC-52

TROUBLE DIAGNOSIS

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

YES >> GO TO 6. NO >> Adjust or replace air mix door cable. Refer to MTC-64, "

6.CHECK AIR DUCTS

Air Mix Door Cable Adjustment" .

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. 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-678, "

"Component Inspection" (MR TYPE 2) or EC-169, "Component Inspection" (HR16DE).

OK or NG

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

Component Inspection" (MR TYPE 1), EC-1196,

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-11, "

"Changing Engine Coolant" (MR18DE) .

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

5. Touch both the inlet and outlet heater hoses.

Is the inlet hose hot and the outlet hose warm?

YES >> System OK. NO >> Replace heater core and refill engine coolant. Refer to MTC-67, "

Changing Engine Coolant" (HR16DE) or CO-35,

Removal and Installation" .

Noise INFOID:0000000004307075

SYMPTOM: Noise

INSPECTION FLOW

MTC

MTC-53

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

TROUBLE DIAGNOSIS

*1. MTC-30, "Operational Check" *2. EM-14, "Checking" (HR16DE) or EM-

*4. MTC-86, "Removal and Installation of

Expansion Valve"

*7. MTC-78, "Removal and Installation of

Compressor - HR16DE" or MTC-80, "Removal and Installation of Compressor - MR18DE"

136, "Checking Drive Belts"

(MR18DE)

*5. MTC-78, "Removal and Installation of

Compressor - HR16DE" or MTC-80, "Removal and Installation of Compressor - MR18DE"

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

ty in Compressor"

MTC-54

AWIIA1001GB

*3. MTC-45, "

*6 MTC-78, "Removal and Installation of

Compressor - HR16DE" or MTC-80, "Removal and Installation of Compressor - MR18DE"

*9 MTC-84, "Removal and Installation of

Liquid Tank"

Insufficient Cooling"

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

CONTROLLER

Removal and Installation INFOID:0000000004307076

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-56, "

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, "

Component Parts" .

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.

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

Adjust the door cables during installation. Refer to MTC-63, "

"Mode Door Cable Adjustment" and MTC-64, "Air Mix Door Cable Adjustment" .

Intake Door Cable Adjustment" , MTC-65,

ZJIA0698E

MTC

MTC-55

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

CONTROLLER

Disassembly and Assembly

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

INFOID:0000000004307077

ZJIA0106J

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

MTC-56

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

THERMO CONTROL AMPLIFIER

Removal and Installation INFOID:0000000004307078

NOTE:

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

REMOVAL

1. Remove evaporator. Refer to MTC-85, "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.

MTC

MTC-57

A/C UNIT ASSEMBLY

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

A/C UNIT ASSEMBLY

Removal and Installation INFOID:0000000004307079

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-35, "

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.

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

Changing Engine Coolant".

SJIA0644E

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

SJIA0645E

Component Parts".

MTC-58

A/C UNIT ASSEMBLY

Revision: October 2008

2009 Versa

< 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

SJIA0647E

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

11. Remove side ventilator ducts. Refer to MTC-69, "

12. Remove center ventilator ducts. Refer to MTC-69, "

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

Component".

Component Parts".

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-35, "

• 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".

MTC

MTC-59

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

A/C UNIT ASSEMBLY

Disassembly and Assembly

INFOID:0000000004307080

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.

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

SJIA1515E

12. Heater pipe packing

(MR18DE - TYPE1)

MTC-60

A/C UNIT ASSEMBLY

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

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

43. Cooler pipe assembly

MTC

MTC-61

BLOWER MOTOR

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

BLOWER MOTOR

Removal and Installation INFOID:0000000004307081

REMOVAL

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

2. Remove side ventilator duct (right). Refer to MTC-69, "

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

MTC-62

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

INTAKE DOOR

Intake Door Cable Adjustment INFOID:0000000004307082

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

MTC

MTC-63

AIR MIX DOOR

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

AIR MIX DOOR

Air Mix Door Cable Adjustment INFOID:0000000004307083

1. Remove steering member. Refer to MTC-58.

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

MTC-64

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

MODE DOOR

Mode Door Cable Adjustment INFOID:0000000004307084

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

MTC

MTC-65

BLOWER FAN RESISTOR

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

BLOWER FAN RESISTOR

Removal and Installation INFOID:0000000004307085

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).

SJIA0656E

INSTALLATION

Installation is in the reverse order of removal.

MTC-66

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

HEATER CORE

Removal and Installation INFOID:0000000004307086

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-58, "Removal and Installation".

2. Remove the foot duct (left). Refer to MTC-69, "

Removal and Installation".

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.

INSTALLATION

Installation is in the reverse order of removal.

MTC

MTC-67

AIR CONDITIONER FILTER

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

AIR CONDITIONER FILTER

Removal and Installation INFOID:0000000004307087

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.

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

MTC-68

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

DUCTS AND GRILLES

Removal and Installation INFOID:0000000004307088

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

MTC

WJIA2198E

MTC-69

DUCTS AND GRILLES

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

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.

ZJIA0661E

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).

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).

SJIA0658E

Installation

Installation is in the reverse order of removal.

DEFROSTER NOZZLE AND SIDE DEFROSTER DUCTS (LH/RH)

SJIA0659E

MTC-70

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

DUCTS AND GRILLES

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

A. Side defroster duct screw B. Defroster nozzle screw

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).

WJIA2199E

MTC

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

Installation

Installation is in the reverse order of removal.

MTC-71

SJIA0661E

SJIA0662E

DUCTS AND GRILLES

Revision: October 2008

2009 Versa

< 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).

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-58.

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

SJIA0663E

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

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.

SJIA0664E

SJIA0665E

MTC-72

DUCTS AND GRILLES

Revision: October 2008

2009 Versa

< 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

MTC

MTC-73

REFRIGERANT LINES

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

REFRIGERANT LINES

HFC-134a (R-134a) Service Procedure INFOID:0000000004307089

SETTING OF SERVICE TOOLS AND EQUIPMENT

Discharging Refrigerant

WJIA2195E

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

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)

WJIA2196E

MTC-74

REFRIGERANT LINES

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

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

C. For charging

WJIA1923E

MTC

*1 MTC-17, "

ty in Compressor"

*4 MTC-45, "Insufficient Cooling"

Maintenance of Oil Quanti-

*2 MTC-86, "Checking of Refrigerant

Leaks"

MTC-75

*3 MTC-87, "Electronic Refrigerant

Leak Detector"

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

REFRIGERANT LINES

Component

INFOID:0000000004307090

MR18DE - Type 1 and HR16DE

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

MTC-76

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

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

MTC

MTC-77

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

REFRIGERANT LINES

Idler Pulley - Without A/C

WJIA2204E

1. Idler pulley 2. Bracket 3. Shaft

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

Removal and Installation of Compressor - HR16DE INFOID:0 000000004800722

HR16DE

REMOVAL

ALIIA0093GB

MTC-78

REFRIGERANT LINES

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

1. Use the recovery/recycling equipment to evacuate the refrigerant. Refer to MTC-74, "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, "

Removal and Installation".

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

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

INSPECTION FOR CLUTCH DISC TO PULLEY CLEARANCE

1. Check the clearance around the entire periphery of the clutch disc and pulley using a suitable tool as shown.

Clutch disc to pulley clearance : 0.3 - 0.6 mm

(0.012 - 0.024 in)

SJIA0672E

MTC

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

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-86, "

MTC-79

RHA087E

Checking of Refrigerant Leaks".

< SERVICE INFORMATION >

Revision: October 2008

2009 Versa

REFRIGERANT LINES

Removal and Installation of Compressor - MR18DE

MR18DE

INFOID:0000000004800721

ALIIA0092GB

REMOVAL

1. Use the recovery/recycling equipment to evacuate the refrigerant. Refer to MTC-74, "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-136, "

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".

SJIA0672E

MTC-80

REFRIGERANT LINES

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

INSPECTION FOR CLUTCH DISC TO PULLEY CLEARANCE

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

Clutch disc to pulley clearance (B) : 0.3 - 0.6 mm

(0.012 - 0.024 in)

2. If specified clearance (B) is not obtained, replace compressor.

AWIIA0273ZZ

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-86, "

Checking of Refrigerant Leaks".

Removal and Installation of Low-Pressure Flexible Hose INFOID:0000000004307092

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".

MTC

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.

SJIA0675E

SJIA0644E

MTC-81

REFRIGERANT LINES

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

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.

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:0000000004307093

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.

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.

MTC-82

REFRIGERANT LINES

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

Removal and Installation of High-Pressure Pipe INFOID:0000000004307094

SJIA0679E

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

REMOVAL

1. Remove low-pressure flexible hose. Refer to MTC-81, "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 highpressure 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.

SJIA0680E

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 INFOID:0000000004307095

MTC

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.

INSTALLATION

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.

SJIA0681E

MTC-83

REFRIGERANT LINES

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

• When recharging refrigerant, check for leaks.

Removal and Installation of Condenser INFOID:0000000004307096

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-82, "

and Installation of High-Pressure Flexible Hose" and MTC-83, "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:0000000004307097

REMOVAL

1. Remove the condenser. Refer to MTC-84, "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.

ZJIA0842J

MTC-84

REFRIGERANT LINES

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

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-

86, "Checking of Refrigerant Leaks".

ZJIA0843J

RJIA3879J

Removal and Installation of Evaporator INFOID:0000000004307098

REMOVAL

1. Remove A/C unit assembly. Refer to MTC-58, "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-68, "

3. Remove foot duct (right). Refer to MTC-69, "

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

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

Removal and Installation".

SJIA0673E

MTC

SJIA0674E

MTC-85

REFRIGERANT LINES

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

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:0000000004307099

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-58,

"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".

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:0000000004307100

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:

SJIA0683E

MTC-86

REFRIGERANT LINES

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

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:000 0000004307101

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:0000000004307102

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

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

MTC

Electronic Refrigerant Leak Detector INFOID:0000000004307103

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

MTC-87

REFRIGERANT LINES

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

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

SHA706E

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

, 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-76, " 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

, 50 psi) above 16°C. If less

Component". Perform a

MTC-88

REFRIGERANT LINES

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

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

MTC

MTC-89

SERVICE DATA AND SPECIFICATIONS (SDS)

Revision: October 2008

2009 Versa

< SERVICE INFORMATION >

SERVICE DATA AND SPECIFICATIONS (SDS)

Compressor INFOID:0000000004307104

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

(in3) / revolution

Cylinder bore × stroke mm (in)

Direction of rotation Clockwise (viewed from drive end)

Drive belt Poly-V Ribbed 6-Groove

Oil INFOID:0000000004307105

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:0000000004307106

Type HFC-134a (R-134a)

Capacity kg (lb)

0.45 ± 0.05 (0.99 ± 0.11)

MTC-90

Nissan VERSA 2009 Owner's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

PRECAUTIONS

SERVICE INFORMATION

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" INFOID:0000000004784399

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

Precaution Necessary for Steering Wheel Rotation After Battery Disconnect

OPERATION PROCEDURE

Precaution for Procedure without Cowl Top Cover INFOID:0000000004307042

Precaution for Working with HFC-134a (R-134a) INFOID:0000000004307043

General Refrigerant Precaution INFOID:0000000004307044

Oil Precaution INFOID:0000000004307045

Precaution for Refrigerant Connection INFOID:0000000004307046

FEATURES OF NEW TYPE REFRIGERANT CONNECTION

O-RING AND REFRIGERANT CONNECTION

Precaution for Service of Compressor INFOID:0000000004307047

Precaution for Service Equipment INFOID:0000000004307048

RECOVERY/RECYCLING EQUIPMENT

ELECTRONIC LEAK DETECTOR

VACUUM PUMP

MANIFOLD GAUGE SET

SERVICE HOSES

SERVICE COUPLERS

REFRIGERANT WEIGHT SCALE

CHARGING CYLINDER

Precaution for Leak Detection Dye INFOID:0000000004307049

IDENTIFICATION LABEL FOR VEHICLE

PREPARATION

HFC-134a (R-134a) Service Tool and Equipment INFOID:0000000004307051

Commercial Service Tool INFOID:0000000004307052

REFRIGERATION SYSTEM

Refrigerant Cycle INFOID:0000000004307053

REFRIGERANT FLOW

FREEZE PROTECTION

Refrigerant System Protection INFOID:0000000004307054

REFRIGERANT PRESSURE SENSOR

PRESSURE RELIEF VALVE

Component Part Location

Maintenance of Oil Quantity in Compressor INFOID:0000000004307056

OIL ADJUSTING PROCEDURE FOR COMPONENTS REPLACEMENT EXCEPT COMPRESSOR

OIL ADJUSTING PROCEDURE FOR COMPRESSOR REPLACEMENT

AIR CONDITIONER CONTROL

Control Operation INFOID:0000000004307057

BLOWER CONTROL DIAL

TEMPERATURE CONTROL DIAL

MODE DOOR CONTROL DIAL

INTAKE DOOR LEVER

REAR WINDOW DEFOGGER SWITCH

A/C SWITCH (IF EQUIPPED)

Discharge Air Flow

System Description INFOID:0000000004307059

SWITCHES AND THEIR CONTROL FUNCTION

TROUBLE DIAGNOSIS

CONSULT-II Function (BCM) INFOID:0000000004784392

DATA MONITOR

Display Item List

How to Perform Trouble Diagnosis for Quick and Accurate Repair INFOID:0000000004307062

WORK FLOW

SYMPTOM TABLE

Component Parts and Harness Connector Location INFOID:0000000004307063

ENGINE COMPARTMENT

PASSENGER COMPARTMENT

Schematic INFOID:0000000004307064

Wiring Diagram - Heater -

WITHOUT A/C

Wiring Diagram - A/C,M - INFOID:0000000004307066

Operational Check

CHECKING BLOWER

CHECKING DISCHARGE AIR

CHECKING RECIRCULATION

CHECKING TEMPERATURE DECREASE

CHECKING TEMPERATURE INCREASE

CHECKING A/C SWITCH (IF EQUIPPED)

CHECKING DEFROST A/C SWITCH (IF EQUIPPED)

Mode Door INFOID:0000000004307068

INSPECTION FLOW

Air Mix Door INFOID:0000000004307069

INSPECTION FLOW