FOR USA AND CANADA : Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the " SRS AIRBAG -- MURANO " and " SEAT BELTS -- MURANO " service information.
| WARNING | To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in the event of a collision that would result in air bag inflation, all maintenance must be performed by an authorized NISSAN/INFINITI dealer. Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag Module, see " SRS AIR BAG ". Never use electrical test equipment on any circuit related to the SRS unless instructed to in this service information. 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 Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the ignition ON or engine running, never use air or electric power tools or strike near the sensor(s) with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing serious injury. When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the battery, and wait at least 3 minutes before performing any service. |
FOR MEXICO : Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. Information necessary to service the system safely is included in the " SRS AIRBAG -- MURANO " and " SEAT BELTS -- MURANO " service information.
| 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 " SRS AIR BAG ". Never use electrical test equipment on any circuit related to the SRS unless instructed to in this service information. 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 Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the ignition ON or engine running, never use air or electric power tools or strike near the sensor(s) with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing serious injury. When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the battery, and wait at least 3 minutes before performing any service. |
Precaution for Procedure without Cowl Top Cover
When performing the procedure after removing cowl top cover, cover the lower end of windshield with urethane, etc.
Scheme 283
Precautions For Xenon Headlamp Service
| WARNING | Comply with the following warnings to prevent any serious accident. Disconnect the battery cable (negative terminal) or the power supply fuse before installing, removing, or touching the xenon headlamp (bulb included). The xenon headlamp contains high-voltage generated parts. Never work with wet hands. Check the xenon headlamp ON-OFF status after assembling it to the vehicle. Never turn the xenon headlamp ON in other conditions. Connect the power supply to the vehicle-side connector. (Turning it ON outside the lamp case may cause fire or visual impairments.) Never touch the bulb glass immediately after turning it OFF. It is extremely hot. |
| CAUTION | Comply with the following cautions to prevent any error and malfunction. Install the xenon bulb securely. (Insufficient bulb socket installation may melt the bulb, the connector, the housing, etc. by high-voltage leakage or corona discharge.) Never perform HID circuit inspection with a tester. Never touch the xenon bulb glass with hands. Never put oil and grease on it. Dispose of the used xenon bulb after packing it in thick vinyl without breaking it. Never wipe out dirt and contamination with organic solvent (thinner, gasoline, etc.). |
Working with HFC-134a (R-134a)
| CAUTION | CFC-12 (R-12) refrigerant and HFC-134a (R-134a) refrigerant are not compatible. Compressor malfunction is likely to occur if the refrigerants are mixed, refer to CONTAMINATED REFRIGERANT. To determine the purity of HFC-134a (R-134a) in the vehicle and recovery tank, use Refrigerant Recovery/Recycling Recharging equipment and Refrigerant Identifier. Use only specified lubricant for the HFC-134a (R-134a) A/C system and HFC-134a (R-134a) components. Compressor malfunction is likely to occur if lubricant other than that specified is used. The specified HFC-134a (R-134a) lubricant rapidly absorbs moisture from the atmosphere. The following handling precautions must be observed: Immediately cap (seal) immediately the component to minimize the entry of moisture from the atmosphere when removing refrigerant components from a vehicle. Never remove the caps (unseal) until just before connecting the components when installing refrigerant components to a vehicle. Connect all refrigerant loop components as quickly as possible to minimize the entry of moisture into system. Use only the specified lubricant from a sealed container. Immediately reseal containers of lubricant. Lubricant becomes saturated with moisture and should not be used without proper sealing. Never allow lubricant (NISSAN A/C System Oil Type S) to come in to contact with styrene foam parts. Damage may result. |
CONTAMINATED REFRIGERANT
Take the appropriate steps shown below if a refrigerant other than pure HFC-134a (R-134a) is identified in a vehicle
- Explain to the customer that environmental regulations prohibit the release of contaminated refrigerant into the atmosphere.
- Explain that recovery of the contaminated refrigerant could damage service equipment and refrigerant supply.
- Suggest the customer return the vehicle to the location of previous service where the contamination may have occurred.
- If repairing, recover the refrigerant using only dedicated equipment and containers. Never reintroduce contaminated refrigerant into the existing service equipment . Contact a local refrigerant product retailer for available service if the facility does not have dedicated recovery equipment. This refrigerant must be disposed of in accordance with all federal and local regulations. In addition, replacement of all refrigerant system components on the vehicle is recommended.
- The air conditioner warranty is void if the vehicle is within the warranty period. Please contact Nissan Customer Affairs for further assistance.
General Refrigerant Precaution
| WARNING | Never breathe A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose or throat. Remove HFC-134a (R-134a) from the A/C system, using certified service equipment meeting requirements of SAE J-2210 [HFC-134a (R-134a) recycling equipment], or J-2209 [HFC-134a (R-134a) recovery equipment]. Ventilate the work area before resuming service if accidental system discharge occurs. Additional health and safety information may be obtained from refrigerant and lubricant manufacturers. Never release refrigerant into the air. Use approved recovery/recycling equipment to capture the refrigerant each time an air conditioning system is discharged. Always wear eye and hand protection (goggles and gloves) when working with any refrigerant or air conditioning system. Never store or heat refrigerant containers above 52°C (126°F). Never heat a refrigerant container with an open flame. Place the bottom of the container in a warm pail of water if container warming is required. Never intentionally drop, puncture, or incinerate refrigerant containers. Keep refrigerant away from open flames. Poisonous gas is produced if refrigerant burns. Refrigerant displaces oxygen, therefore be certain to work in well ventilated areas to prevent suffocation. Never pressure test or leakage 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 proven to be combustible at elevated pressures. These mixtures, if ignited, may cause injury or property damage. Additional health and safety information may be obtained from refrigerant manufacturers. |
Refrigerant Connection
A new type refrigerant connection has been introduced to all refrigerant lines except the following locations.
- Expansion valve to evaporator
- Refrigerant pressure sensor to liquid tank
O-RING AND REFRIGERANT CONNECTION
Scheme 284
| CAUTION | The new and former refrigerant connections use different O-ring configurations. Never confuse O-rings since they are not interchangeable. Refrigerant may leak at the connection if an incorrect O-ring is installed. |
O-Ring Part Numbers and Specifications
| Connection type | Piping connection point | Part number | QTY | O-ring size | |
|---|---|---|---|---|---|
| New | Low-pressure flexible hose to low-pressure pipe | 92474 N8210 | 1 | Ø19 | |
| High-pressure pipe to condenser pipe assembly (Outlet) | 92471 N8210 | 1 | Ø8 | ||
| Condenser pipe assembly (Inlet) to high-pressure flexible hose (One-touch joint) | 92472 N8210 | 1 | Ø12 | ||
| Condenser assembly to condenser pipe assembly | Inlet | 92472 N8210 | 1 | Ø12 | |
| Outlet | 92471 N8210 | 1 | Ø8 | ||
| Low-pressure pipe to expansion valve | 92473 N8210 | 1 | Ø16 | ||
| High-pressure pipe to expansion valve | 92471 N8210 | 1 | Ø8 | ||
| Compressor to low-pressure flexible hose | 92474 N8210 | 1 | Ø19 | ||
| Compressor to high-pressure flexible hose | 92472 N8210 | 1 | Ø12 | ||
| Liquid tank to condenser assembly | Inlet | 92471 N8210 | 1 | Ø8 | |
| Outlet | 1 | ||||
| Former | Refrigerant pressure sensor to liquid tank | J2476 89956 | 1 | Ø10 | |
| Expansion valve to evaporator pipe assembly | Inlet | 92475 71L00 | 1 | Ø12 | |
| Outlet | 92475 72L00 | 1 | Ø16 | ||
| Evaporator to evaporator pipe assembly | Inlet | 92475 71L00 | 1 | Ø12 | |
| Outlet | 92475 72L00 | 1 | Ø16 | ||
O-RING PART NUMBERS AND SPECIFICATIONS
| WARNING | Check that all refrigerant is discharged into the recycling equipment and the pressure in the system is less than the atmospheric pressure. Then gradually loosen the discharge side hose fitting and remove it. |
Scheme 285
Service Equipment
RECOVERY/RECYCLING EQUIPMENT
Be certain to follow the manufacturer instructions for machine operation and machine maintenance. Never introduce any refrigerant other than that specified into the machine.
ELECTRICAL LEAK DETECTOR
Be certain to follow the manufacturer instructions for tester operation and tester maintenance.
VACUUM PUMP
The lubricant contained inside the vacuum pump is not compatible with the specified lubricant for HFC-134a (R-134a) A/C systems. The vent side of the vacuum pump is exposed to atmospheric pressure. So the vacuum pump lubricant may migrate out of the pump into the service hose. This is possible when the pump is switched OFF after evacuation (vacuuming) and the hose is connected to it. To prevent this migration, use a manual valve placed near the hose-to-pump connection, as per the following procedure.
- Vacuum pumps usually have a manual isolator valve as part of the pump. Close this valve to isolate the service hose from the pump.
- Use a hose equipped with a manual shut-off valve near the pump end for pumps without an isolator. Close the valve to isolate the hose from the pump.
- Disconnect the hose from the pump if the hose has an automatic shut-off valve. As long as the hose is connected, the valve is open and lubricating oil may migrate.
Some one-way valves open when vacuum is applied and close under the no vacuum condition. Such valves may restrict the ability of the pump to create a deep vacuum and are not recommended.
Scheme 286
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 lubricants.
Scheme 287
SERVICE HOSES
Be certain that the service hoses display the markings described (colored hose with a black stripe). All hoses must equip positive shut-off devices (either manual or automatic) near the end of the hoses opposite to the manifold gauge.
Scheme 288
SERVICE COUPLERS
Never attempt to connect HFC-134a (R-134a) service couplers to a CFC-12 (R-12) A/C system. The HFC-134a (R-134a) couplers do not properly connect to the CFC-12 (R-12) system. However, if an improper connection is attempted, discharging and contamination may occur.
| Shut-off valve rotation | A/C service valve |
|---|---|
| Clockwise | Open |
| Counterclockwise | Close |
SHUT-OFF VALVE ROTATION REFERENCE CHART
Scheme 289
REFRIGERANT WEIGHT SCALE
Verify that no refrigerant other than HFC-134a (R-134a) and specified lubricants have been used with the scale. The hose fitting must be 1/2"-16 ACME if the scale controls refrigerant flow electronically.
Scheme 290
CHARGING CYLINDER
Use of a charging cylinder is not recommended. Refrigerant may be vented into the air from the top valve of the cylinder when filling the cylinder with refrigerant. Also, the accuracy of the cylinder is generally less than that of an electronic scale or of quality recycle/recharge equipment.
General Precautions
| CAUTION | Plug all openings to prevent moisture and foreign material from entering. Store it in the same way as it is when mounted on the car when the compressor is removed. Follow "Maintenance of Lubricant Quantity in Compressor" exactly when replacing or repairing compressor. Refer to " MAINTENANCE OF LUBRICANT QUANTITY ". Keep friction surfaces between clutch and pulley clean. Wipe it off by using a waste moistened with thinner if the surface is contaminated with lubricant. Turn the compressor shaft by hand more than five turns in both directions after compressor service operation. This equally distributes lubricant inside the compressor. Let the engine idle and operate the compressor for one hour after the compressor is installed. Apply voltage to the new compressor and check for normal operation after replacing the compressor magnet clutch. |
| CAUTION | The A/C system contains a fluorescent leak detection dye used for locating refrigerant leakages. An ultraviolet (UV) lamp is required to illuminate the dye when inspecting for leakages. Always wear fluorescence enhancing UV safety goggles to protect eyes and enhance the visibility of the fluorescent dye. The fluorescent dye leak detector is not a replacement for an electrical leak detector (SST: J-41995). The fluorescent dye leak detector should be used in conjunction with an electrical leak detector (SST: J-41995) to pin-point refrigerant leakages. Read and follow all manufacturer operating instructions and precautions prior to performing work for safety and customer satisfaction. A compressor shaft seal should not necessarily be repaired because of dye seepage. The compressor shaft seal should only be repaired after confirming the leakage with an electrical leak detector (SST: J-41995). Always remove any remaining dye from the leakage area after repairs are completed to avoid a misdiagnosis during future service. Never allow dye to come into contact with painted body panels or interior components. Immediately clean with the approved dye cleaner if dye is spilled. Fluorescent dye left on a surface for an extended period of time cannot be removed. Never spray fluorescent dye cleaning agent on hot surfaces (engine exhaust manifold, etc.). Never use more than one refrigerant dye bottle [1/4 ounce (7.4 cc)] per A/C system. Leak detection dyes for HFC-134a (R-134a) and CFC-12 (R-12) A/C systems are different. Never use HFC-134a (R-134a) leak detection dye in CFC-12 (R-12) A/C system or CFC-12 (R-12) leak detection dye in HFC-134a (R-134a) A/C system, otherwise A/C system damage may result. The fluorescent properties of the dye remains for three or more years unless a compressor malfunction occurs. |
Special Service Tool
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
HFC-134a (R-134a) Service Tool and Equipment
Scheme 291
Scheme 292
Scheme 293
Scheme 294
Scheme 295
Scheme 296
Scheme 297
Scheme 298
Scheme 299
Scheme 300
Scheme 301
- Never mix HFC-134a (R-134a) refrigerant and/or its specified lubricant with CFC-12 (R-12) refrigerant and/or its lubricant.
- Separate and non-interchangeable service equipment must be used for handling each type of refrigerant/lubricant.
- Refrigerant container fittings, service hose fittings and service equipment fittings (equipment that handles refrigerant and/or lubricant) are different between CFC-12 (R-12) and HFC-134a (R-134a). This is to avoid mixed use of the refrigerants/lubricant.
- Never use adapters that convert one size fitting to another. Refrigerant/lubricant contamination occurs and compressor malfunction may result. TOOLS DESCRIPTION CHART Tool number (Kent-Moore No.) Tool name Description (ACR2005-NI) ACR5 A/C Service Center Function: Refrigerant recovery, recycling and recharging (J-41995) Electrical leak detector Power supply: DC 12 V (Battery terminal) (J-43926) Refrigerant dye leak detection kit Kit includes: (J-42220) UV lamp and UV safety goggles (J-41459) HFC-134a (R-134a) dye injector Use with J-41447, 1/4 ounce bottle (J-41447) HFC-134a (R-134a) fluorescent leak detection dye (Box of 24, 1/4 ounce bottles) (J-43872) Refrigerant dye cleaner Power supply: DC 12 V (Battery terminal) (J-42220) UV lamp and UV safety goggles Power supply: DC 12 V (Battery terminal) For checking refrigerant leakage when fluorescent dye is equipped in A/C system Includes: UV lamp and UV safety goggles (J-41447) HFC-134a (R-134a) fluorescent leak detection dye (Box of 24, 1/4 ounce bottles) Application: For HFC-134a (R-134a) PAG oil Container: 1/4 ounce (7.4 cc) bottle (Includes self-adhesive dye identification labels for affixing to vehicle after charging system with dye.) (J-41459) HFC-134a (R-134a) dye injector Use with J-41447, 1/4 ounce bottle For injecting 1/4 ounce of fluorescent leak detection dye into A/C system (J-43872) Refrigerant dye cleaner For cleaning dye spills (J-39183) Manifold gauge set (with hoses and couplers) Identification: The gauge face indicates HFC-134a (R-134a). Fitting size: Thread size 1/2"-16 ACME Service hoses High-pressure side hose (J-39501-72) Low-pressure side hose (J-39502-72) Utility hose (J-39476-72) Hose color: Low-pressure side hose: Blue with black stripe High-pressure side hose: Red with black stripe Utility hose: Yellow with black stripe or green with black stripe Hose fitting to gauge: 1/2"-16 ACME Service couplers High-pressure side coupler (J-39500-20) Low-pressure side coupler (J-39500-24) Hose fitting to service hose: M14 x 1.5 fitting is optional or permanently attached. (J-39650) Refrigerant weight scale For measuring of refrigerant Fitting size: Thread size 1/2"-16 ACME (J-39649) Vacuum pump (Including the isolator valve) Capacity: Air displacement: 4 CFM Micron rating: 20 microns Oil capacity: 482 g (17 oz.) Fitting size: Thread size 1/2"-16 ACME
Commercial Service Tool
COMMERCIAL SERVICE TOOL DESCRIPTION CHART Tool name Description Refrigerant identifier equipment Checking for refrigerant purity and system contamination Power tools For loosening bolts and nuts Remover tools Remove clips, pawls, and metal clips
Scheme 302
Scheme 303
Sealant or/and Lubricant
HFC-134a (R-134a) Service Tool and Equipment
Scheme 304
Scheme 305
- Never mix HFC-134a (R-134a) refrigerant and/or its specified lubricant with CFC-12 (R-12) refrigerant and/or its lubricant.
- Separate and non-interchangeable service equipment must be used for handling each type of refrigerant/lubricant.
- Refrigerant container fittings, service hose fittings and service equipment fittings (equipment that handles refrigerant and/or lubricant) are different between CFC-12 (R-12) and HFC-134a (R-134a). This is to avoid mixed use of the refrigerants/lubricant.
- Never use adapters that convert one size fitting to another. Refrigerant/lubricant contamination occurs and compressor malfunction may result. TOOLS NAME DESCRIPTION CHART Tool name Description HFC-134a (R-134a) refrigerant Container color: Light blue Container marking: HFC-134a (R-134a) Fitting size: Thread size Large container 1/2"-16 ACME NISSAN A/C System Oil Type S (DH-PS) Type: Polyalkylene glycol oil (PAG), type S (DH-PS) Application: HFC-134a (R-134a) swash plate compressors (NISSAN only) Capacity: 40 m l (1.4 US fl oz., 1.4 lmp fl oz.)
Scheme 306
Scheme 307
- Remove the filter cover (1), and then remove the in-cabin microfilter/air conditioner filter (2).
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the " SRS AIRBAG -- MURANO " and " SEAT BELTS -- MURANO " service information.
| WARNING | To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in the event of a collision that would result in air bag inflation, all maintenance must be performed by an authorized NISSAN/INFINITI dealer. Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag Module, see " SRS AIR BAG ". Never use electrical test equipment on any circuit related to the SRS unless instructed to in the service information. 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 Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the ignition ON or engine running, never use air or electric power tools or strike near the sensor(s) with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing serious injury. When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the battery, and wait at least 3 minutes before performing any service. |
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. Information necessary to service the system safely is included in the " SRS AIRBAG -- MURANO " and " SEAT BELTS -- MURANO " service information.
| 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 " SRS AIR BAG ". Never use electrical test equipment on any circuit related to the SRS unless instructed to in this service information. 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 Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the ignition ON or engine running, never use air or electric power tools or strike near the sensor(s) with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing serious injury. When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the battery, and wait at least 3 minutes before performing any service. |
When performing the procedure after removing cowl top cover, cover the lower end of windshield with urethane, etc.
| WARNING | Comply with the following warnings to prevent any serious accident. Disconnect the battery cable (negative terminal) or the power supply fuse before installing, removing, or touching the xenon headlamp (bulb included). The xenon headlamp contains high-voltage generated parts. Never work with wet hands. Check the xenon headlamp ON-OFF status after assembling it to the vehicle. Never turn the xenon headlamp ON in other conditions. Connect the power supply to the vehicle-side connector. (Turning it ON outside the lamp case may cause fire or visual impairments.) Never touch the bulb glass immediately after turning it OFF. It is extremely hot. |
| CAUTION | Comply with the following cautions to prevent any error and malfunction. Install the xenon bulb securely. (Insufficient bulb socket installation may melt the bulb, the connector, the housing, etc. by high-voltage leakage or corona discharge.) Never perform HID circuit inspection with a tester. Never touch the xenon bulb glass with hands. Never put oil and grease on it. Dispose of the used xenon bulb after packing it in thick vinyl without breaking it. Never wipe out dirt and contamination with organic solvent (thinner, gasoline, etc.). |
| CAUTION | CFC-12 (R-12) refrigerant and HFC-134a (R-134a) refrigerant are not compatible. Compressor malfunction is likely to occur if the refrigerants are mixed, refer to CONTAMINATED REFRIGERANT below. To determine the purity of HFC-134a (R-134a) in the vehicle and recovery tank, use Refrigerant Recovery/Recycling Recharging equipment and Refrigerant Identifier. Use only specified lubricant for the HFC-134a (R-134a) A/C system and HFC-134a (R-134a) components. Compressor malfunction is likely to occur if lubricant other than that specified is used. The specified HFC-134a (R-134a) lubricant rapidly absorbs moisture from the atmosphere. The following handling precautions must be observed: Immediately cap (seal) immediately the component to minimize the entry of moisture from the atmosphere when removing refrigerant components from a vehicle. Never remove the caps (unseal) until just before connecting the components when installing refrigerant components to a vehicle. Connect all refrigerant loop components as quickly as possible to minimize the entry of moisture into system. Use only the specified lubricant from a sealed container. Immediately reseal containers of lubricant. Lubricant becomes saturated with moisture and should not be used without proper sealing. Never allow lubricant (NISSAN A/C System Oil Type S) to come in to contact with styrene foam parts. Damage may result. |
CONTAMINATED REFRIGERANT
Take the appropriate steps shown below if a refrigerant other than pure HFC-134a (R-134a) is identified in a vehicle
- Explain to the customer that environmental regulations prohibit the release of contaminated refrigerant into the atmosphere.
- Explain that recovery of the contaminated refrigerant could damage service equipment and refrigerant supply.
- Suggest the customer return the vehicle to the location of previous service where the contamination may have occurred.
- If repairing, recover the refrigerant using only dedicated equipment and containers. Never reintroduce contaminated refrigerant into the existing service equipment . Contact a local refrigerant product retailer for available service if the facility does not have dedicated recovery equipment. This refrigerant must be disposed of in accordance with all federal and local regulations. In addition, replacement of all refrigerant system components on the vehicle is recommended.
- The air conditioner warranty is void if the vehicle is within the warranty period. Please contact Nissan Customer Affairs for further assistance.
| WARNING | Never breathe A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose or throat. Remove HFC-134a (R-134a) from the A/C system, using certified service equipment meeting requirements of SAE J-2210 [HFC-134a (R-134a) recycling equipment], or J-2209 [HFC-134a (R-134a) recovery equipment]. Ventilate the work area before resuming service if accidental system discharge occurs. Additional health and safety information may be obtained from refrigerant and lubricant manufacturers. Never release refrigerant into the air. Use approved recovery/recycling equipment to capture the refrigerant each time an air conditioning system is discharged. Always wear eye and hand protection (goggles and gloves) when working with any refrigerant or air conditioning system. Never store or heat refrigerant containers above 52°C (126°F). Never heat a refrigerant container with an open flame. Place the bottom of the container in a warm pail of water if container warming is required. Never intentionally drop, puncture, or incinerate refrigerant containers. Keep refrigerant away from open flames. Poisonous gas is produced if refrigerant burns. Refrigerant displaces oxygen, therefore be certain to work in well ventilated areas to prevent suffocation. Never pressure test or leakage 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 proven to be combustible at elevated pressures. These mixtures, if ignited, may cause injury or property damage. Additional health and safety information may be obtained from refrigerant manufacturers. |
A new type refrigerant connection has been introduced to all refrigerant lines except the following locations.
- Expansion valve to evaporator
- Refrigerant pressure sensor to liquid tank
O-RING AND REFRIGERANT CONNECTION
Scheme 308
| CAUTION | The new and former refrigerant connections use different O-ring configurations. Never confuse O-rings since they are not interchangeable. Refrigerant may leak at the connection if an incorrect O-ring is installed. |
O-Ring Part Numbers and Specifications
| Connection type | Piping connection point | Part number | QTY | O-ring size | |
|---|---|---|---|---|---|
| New | Low-pressure flexible hose to low-pressure pipe | 92474 N8210 | 1 | Ø19 | |
| High-pressure pipe to condenser pipe assembly (Outlet) | 92471 N8210 | 1 | Ø8 | ||
| Condenser pipe assembly (Inlet) to high-pressure flexible hose (One-touch joint) | 92472 N8210 | 1 | Ø12 | ||
| Condenser assembly to condenser pipe assembly | Inlet | 92472 N8210 | 1 | Ø12 | |
| Outlet | 92471 N8210 | 1 | Ø8 | ||
| Low-pressure pipe to expansion valve | 92473 N8210 | 1 | Ø16 | ||
| High-pressure pipe to expansion valve | 92471 N8210 | 1 | Ø8 | ||
| Compressor to low-pressure flexible hose | 92474 N8210 | 1 | Ø19 | ||
| Compressor to high-pressure flexible hose | 92472 N8210 | 1 | Ø12 | ||
| Liquid tank to condenser assembly | Inlet | 92471 N8210 | 1 | Ø8 | |
| Outlet | 1 | ||||
| Former | Refrigerant pressure sensor to liquid tank | J2476 89956 | 1 | Ø10 | |
| Expansion valve to evaporator pipe assembly | Inlet | 92475 71L00 | 1 | Ø12 | |
| Outlet | 92475 72L00 | 1 | Ø16 | ||
| Evaporator to evaporator pipe assembly | Inlet | 92475 71L00 | 1 | Ø12 | |
| Outlet | 92475 72L00 | 1 | Ø16 | ||
O-RING PART NUMBERS AND SPECIFICATIONS
| WARNING | Check that all refrigerant is discharged into the recycling equipment and the pressure in the system is less than the atmospheric pressure. Then gradually loosen the discharge side hose fitting and remove it. |
RECOVERY/RECYCLING EQUIPMENT
Be certain to follow the manufacturer instructions for machine operation and machine maintenance. Never introduce any refrigerant other than that specified into the machine.
ELECTRICAL LEAK DETECTOR
Be certain to follow the manufacturer instructions for tester operation and tester maintenance.
VACUUM PUMP
The lubricant contained inside the vacuum pump is not compatible with the specified lubricant for HFC-134a (R-134a) A/C systems. The vent side of the vacuum pump is exposed to atmospheric pressure. So the vacuum pump lubricant may migrate out of the pump into the service hose. This is possible when the pump is switched OFF after evacuation (vacuuming) and the hose is connected to it. To prevent this migration, use a manual valve placed near the hose-to-pump connection, as per the following procedure.
- Vacuum pumps usually have a manual isolator valve as part of the pump. Close this valve to isolate the service hose from the pump.
- Use a hose equipped with a manual shut-off valve near the pump end for pumps without an isolator. Close the valve to isolate the hose from the pump.
- Disconnect the hose from the pump if the hose has an automatic shut-off valve. As long as the hose is connected, the valve is open and lubricating oil may migrate.
Some one-way valves open when vacuum is applied and close under the no vacuum condition. Such valves may restrict the ability of the pump to create 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 lubricants.
SERVICE HOSES
Be certain that the service hoses display the markings described (colored hose with a black stripe). All hoses must equip positive shut-off devices (either manual or automatic) near the end of the hoses opposite to the manifold gauge.
SERVICE COUPLERS
Never attempt to connect HFC-134a (R-134a) service couplers to a CFC-12 (R-12) A/C system. The HFC-134a (R-134a) couplers do not properly connect to the CFC-12 (R-12) system. However, if an improper connection is attempted, discharging and contamination may occur.
| Shut-off valve rotation | A/C service valve |
|---|---|
| Clockwise | Open |
| Counterclockwise | Close |
SHUT-OFF VALVE ROTATION REFERENCE CHART
REFRIGERANT WEIGHT SCALE
Verify that no refrigerant other than HFC-134a (R-134a) and specified lubricants have been used with the scale. The hose fitting must be 1/2"-16 ACME if the scale controls refrigerant flow electronically.
CHARGING CYLINDER
Use of a charging cylinder is not recommended. Refrigerant may be vented into the air from the top valve of the cylinder when filling the cylinder with refrigerant. Also, the accuracy of the cylinder is generally less than that of an electronic scale or of quality recycle/recharge equipment.
| CAUTION | Plug all openings to prevent moisture and foreign material from entering. Store it in the same way as it is when mounted on the car when the compressor is removed. Follow "Maintenance of Lubricant Quantity in Compressor" exactly when replacing or repairing compressor. Refer to " MAINTENANCE OF LUBRICANT QUANTITY ". Keep friction surfaces between clutch and pulley clean. Wipe it off by using a waste moistened with thinner if the surface is contaminated with lubricant. Turn the compressor shaft by hand more than five turns in both directions after compressor service operation. This equally distributes lubricant inside the compressor. Let the engine idle and operate the compressor for one hour after the compressor is installed. Apply voltage to the new compressor and check for normal operation after replacing the compressor magnet clutch. |
| CAUTION | The A/C system contains a fluorescent leak detection dye used for locating refrigerant leakages. An ultraviolet (UV) lamp is required to illuminate the dye when inspecting for leakages. Always wear fluorescence enhancing UV safety goggles to protect eyes and enhance the visibility of the fluorescent dye. The fluorescent dye leak detector is not a replacement for an electrical leak detector (SST: J-41995). The fluorescent dye leak detector should be used in conjunction with an electrical leak detector (SST: J-41995) to pin-point refrigerant leakages. Read and follow all manufacturer operating instructions and precautions prior to performing work for safety and customer satisfaction. A compressor shaft seal should not necessarily be repaired because of dye seepage. The compressor shaft seal should only be repaired after confirming the leakage with an electrical leak detector (SST: J-41995). Always remove any remaining dye from the leakage area after repairs are completed to avoid a misdiagnosis during future service. Never allow dye to come into contact with painted body panels or interior components. Immediately clean with the approved dye cleaner if dye is spilled. Fluorescent dye left on a surface for an extended period of time cannot be removed. Never spray fluorescent dye cleaning agent on hot surfaces (engine exhaust manifold, etc.). Never use more than one refrigerant dye bottle [1/4 ounce (7.4 cc)] per A/C system. Leak detection dyes for HFC-134a (R-134a) and CFC-12 (R-12) A/C systems are different. Never use HFC-134a (R-134a) leak detection dye in CFC-12 (R-12) A/C system or CFC-12 (R-12) leak detection dye in HFC-134a (R-134a) A/C system, otherwise A/C system damage may result. The fluorescent properties of the dye remains for three or more years unless a compressor malfunction occurs. |
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
HFC-134a (R-134a) Service Tool and Equipment
- Never mix HFC-134a (R-134a) refrigerant and/or its specified lubricant with CFC-12 (R-12) refrigerant and/or its lubricant.
- Separate and non-interchangeable service equipment must be used for handling each type of refrigerant/lubricant.
- Refrigerant container fittings, service hose fittings and service equipment fittings (equipment that handles refrigerant and/or lubricant) are different between CFC-12 (R-12) and HFC-134a (R-134a). This is to avoid mixed use of the refrigerants/lubricant.
- Never use adapters that convert one size fitting to another. Refrigerant/lubricant contamination occurs and compressor malfunction may result. TOOLS DESCRIPTION CHART Tool number (Kent-Moore No.) Tool name Description (ACR2005-NI) ACR5 A/C Service Center Function: Refrigerant recovery, recycling and recharging (J-41995) Electrical leak detector Power supply: DC 12 V (Battery terminal) (J-43926) Refrigerant dye leak detection kit Kit includes: (J-42220) UV lamp and UV safety goggles (J-41459) HFC-134a (R-134a) dye injector Use with J-41447, 1/4 ounce bottle (J-41447) HFC-134a (R-134a) fluorescent leak detection dye (Box of 24, 1/4 ounce bottles) (J-43872) Refrigerant dye cleaner Power supply: DC 12 V (Battery terminal) (J-42220) UV lamp and UV safety goggles Power supply: DC 12 V (Battery terminal) For checking refrigerant leakage when fluorescent dye is equipped in A/C system Includes: UV lamp and UV safety goggles (J-41447) HFC-134a (R-134a) fluorescent leak detection dye (Box of 24, 1/4 ounce bottles) Application: For HFC-134a (R-134a) PAG oil Container: 1/4 ounce (7.4 cc) bottle (Includes self-adhesive dye identification labels for affixing to vehicle after charging system with dye.) (J-41459) HFC-134a (R-134a) dye injector Use with J-41447, 1/4 ounce bottle For injecting 1/4 ounce of fluorescent leak detection dye into A/C system (J-43872) Refrigerant dye cleaner For cleaning dye spills (J-39183) Manifold gauge set (with hoses and couplers) Identification: The gauge face indicates HFC-134a (R-134a). Fitting size: Thread size 1/2"-16 ACME Service hoses High-pressure side hose (J-39501-72) Low-pressure side hose (J-39502-72) Utility hose (J-39476-72) Hose color: Low-pressure side hose: Blue with black stripe High-pressure side hose: Red with black stripe Utility hose: Yellow with black stripe or green with black stripe Hose fitting to gauge: 1/2"-16 ACME Service couplers High-pressure side coupler (J-39500-20) Low-pressure side coupler (J-39500-24) Hose fitting to service hose: M14 x 1.5 fitting is optional or permanently attached. (J-39650) Refrigerant weight scale For measuring of refrigerant Fitting size: Thread size 1/2"-16 ACME (J-39649) Vacuum pump (Including the isolator valve) Capacity: Air displacement: 4 CFM Micron rating: 20 microns Oil capacity: 482 g (17 oz.) Fitting size: Thread size 1/2"-16 ACME
COMMERCIAL SERVICE TOOL DESCRIPTION CHART Tool name Description Refrigerant identifier equipment Checking for refrigerant purity and system contamination Power tools For loosening bolts and nuts Remover tools Remove clips, pawls, and metal clips
HFC-134a (R-134a) Service Tool and Equipment
- Never mix HFC-134a (R-134a) refrigerant and/or its specified lubricant with CFC-12 (R-12) refrigerant and/or its lubricant.
- Separate and non-interchangeable service equipment must be used for handling each type of refrigerant/lubricant.
- Refrigerant container fittings, service hose fittings and service equipment fittings (equipment that handles refrigerant and/or lubricant) are different between CFC-12 (R-12) and HFC-134a (R-134a). This is to avoid mixed use of the refrigerants/lubricant.
- Never use adapters that convert one size fitting to another. Refrigerant/lubricant contamination occurs and compressor malfunction may result. TOOLS NAME DESCRIPTION CHART Tool name Description HFC-134a (R-134a) refrigerant Container color: Light blue Container marking: HFC-134a (R-134a) Fitting size: Thread size Large container 1/2"-16 ACME NISSAN A/C System Oil Type S (DH-PS) Type: Polyalkylene glycol oil (PAG), type S (DH-PS) Application: HFC-134a (R-134a) swash plate compressors (NISSAN only) Capacity: 40 m l (1.4 US fl oz., 1.4 lmp fl oz.)
