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Heater & Air Conditioning System: Section

This document provides information on servicing a vehicle's ventilation, heater, and air conditioning system. It includes sections on system components, refrigerant handling procedures like leak testing and charging, lubricant specifications, diagnosis and repair workflows, removal and installation of components like the compressor and condenser, and symptom diagnosis. The document aims to guide technicians on inspection, maintenance and repairs of the climate control system.

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100% found this document useful (1 vote)

3K views188 pages

Heater & Air Conditioning System: Section

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jair Hernandez

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VENTILATION, HEATER & AIR CONDITIONER

HEATER & AIR CONDITIONING SYSTEM

SECTION HA B

E
CONTENTS
TYPE 1 Leak Test .................................................................20 F
Recycle Refrigerant .................................................21
HOW TO USE THIS MANUAL ...................... 6 Charge Refrigerant ..................................................22
G
APPLICATION NOTICE ...................................... 6 LUBRICANT ...................................................... 23
Information ................................................................ 6 Description ...............................................................23
Inspection ................................................................23
PRECAUTION ............................................... 7 Perform Lubricant Return Operation .......................23 H
Lubricant Adjusting Procedure for Components
PRECAUTIONS ................................................... 7 Replacement Except Compressor ...........................23
Precaution for Supplemental Restraint System
Lubricant Adjusting Procedure for Compressor HA
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
Replacement ...........................................................24
SIONER" ................................................................... 7
Precautions Necessary for Steering Wheel Rota- PERFORMANCE TEST .................................... 26
tion After Battery Disconnection ................................ 7 Inspection ................................................................26 J
Precaution for Procedure without Cowl Top Cover...... 8
Precautions for Removing Battery Terminal ............. 8 SYMPTOM DIAGNOSIS .............................. 28
Precautions For Refrigerant System Service ............ 8 K
Service Equipment .................................................. 11 REFRIGERATION SYSTEM SYMPTOMS ........ 28
Trouble Diagnosis For Unusual Pressure ................28
PREPARATION ........................................... 13 Symptom Table .......................................................28
L
PREPARATION ..................................................13 NOISE ................................................................ 30
Commercial Service Tools ..................................... 13 Symptom Table .......................................................30
Sealant or/and Lubricant ......................................... 14 M
REMOVAL AND INSTALLATION ............... 31
SYSTEM DESCRIPTION ............................. 16
COMPRESSOR ................................................. 31
COMPONENT PARTS .......................................16 Exploded View .........................................................31 N
Component Parts Location ...................................... 16 Removal and Installation .........................................31
Component Description ........................................... 16 Inspection ................................................................32
O
SYSTEM .............................................................17 COOLER PIPE AND HOSE .............................. 33
System Diagram ...................................................... 17 Exploded View .........................................................33
System Description ................................................. 17
HIGH-PRESSURE FLEXIBLE HOSE ........................33 P
BASIC INSPECTION ................................... 18 HIGH-PRESSURE FLEXIBLE HOSE : Removal
and Installation ........................................................33
DIAGNOSIS AND REPAIR WORKFLOW .........18
Work Flow ............................................................... 18 LOW-PRESSURE FLEXIBLE HOSE .........................34
LOW-PRESSURE FLEXIBLE HOSE : Removal
REFRIGERANT ..................................................20 and Installation ........................................................34
Description .............................................................. 20

HA-1
INTERNAL HEAT EXCHANGER PIPE ..................... 34 Precautions for Removing Battery Terminal ........... 51
INTERNAL HEAT EXCHANGER PIPE : Removal Precautions For Refrigerant System Service .......... 52
and Installation ....................................................... 34 Service Equipment .................................................. 54

HIGH-PRESSURE PIPE 1 ......................................... 35 PREPARATION .......................................... 56

HIGH-PRESSURE PIPE 1 : Removal and Installa-
tion .......................................................................... 35 PREPARATION ................................................. 56
Commercial Service Tools .................................... 56
HIGH-PRESSURE PIPE 2 ......................................... 35 Sealant or/and Lubricant ......................................... 57
HIGH-PRESSURE PIPE 2 : Removal and Installa-
tion .......................................................................... 35 SYSTEM DESCRIPTION ........................... 59
REFRIGERANT PRESSURE SENSOR .................... 36 COMPONENT PARTS ....................................... 59
REFRIGERANT PRESSURE SENSOR : Remov- Component Parts Location ..................................... 59
al and Installation .................................................... 36 Component Description .......................................... 59
CONDENSER .................................................... 37 SYSTEM ............................................................ 60
Exploded View ........................................................ 37 System Diagram ..................................................... 60
System Description ................................................. 60
CONDENSER ............................................................ 37
CONDENSER : Removal and Installation .............. 37 BASIC INSPECTION .................................. 61
A/C UNIT ASSEMBLY ....................................... 39 DIAGNOSIS AND REPAIR WORKFLOW ......... 61
Exploded View ........................................................ 39 Work Flow ............................................................... 61
A/C UNIT ASSEMBLY .............................................. 42 REFRIGERANT ................................................. 63
A/C UNIT ASSEMBLY : Removal and Installation... 42 Description .............................................................. 63
EVAPORATOR ......................................................... 44 Leak Test ................................................................ 63
EVAPORATOR : Removal and Installation ............ 45 Recycle Refrigerant ................................................ 64
Charge Refrigerant ................................................. 65
HEATER CORE ......................................................... 45
HEATER CORE : Removal and Installation ........... 45 LUBRICANT ...................................................... 66
Description .............................................................. 66
EXPANSION VALVE ................................................. 46 Inspection ................................................................ 66
EXPANSION VALVE : Removal and Installation ... 46 Perform Lubricant Return Operation ....................... 66
Lubricant Adjusting Procedure for Components
SERVICE DATA AND SPECIFICATIONS Replacement Except Compressor .......................... 66
(SDS) ........................................................... 48 Lubricant Adjusting Procedure for Compressor
Replacement ........................................................... 67
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................. 48 PERFORMANCE TEST ..................................... 69
Compressor ............................................................ 48 Inspection ................................................................ 69
Lubricant ................................................................. 48
Refrigerant .............................................................. 48 SYMPTOM DIAGNOSIS ............................ 71
Engine Idling Speed ............................................... 48
Belt Tension ............................................................ 48 REFRIGERATION SYSTEM SYMPTOMS ........ 71
Trouble Diagnosis For Unusual Pressure ............... 71
TYPE 2
Symptom Table ....................................................... 71
HOW TO USE THIS MANUAL .................... 49 NOISE ................................................................ 73
APPLICATION NOTICE .................................... 49 Symptom Table ....................................................... 73
Information .............................................................. 49
REMOVAL AND INSTALLATION .............. 74
PRECAUTION ............................................. 50 COMPRESSOR ................................................. 74
PRECAUTIONS ................................................. 50 Exploded View ........................................................ 74
Precaution for Supplemental Restraint System Removal and Installation ......................................... 74
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Inspection ................................................................ 75
SIONER" ................................................................. 50 COOLER PIPE AND HOSE ............................... 76
Precautions Necessary for Steering Wheel Rota-
Exploded View ........................................................ 76
tion After Battery Disconnection ............................. 50
Precaution for Procedure without Cowl Top Cover... 51 HIGH-PRESSURE FLEXIBLE HOSE ....................... 77
HA-2
HIGH-PRESSURE FLEXIBLE HOSE : Removal PRECAUTIONS ................................................. 94
and Installation ........................................................ 77 Precaution for Supplemental Restraint System A
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
LOW-PRESSURE FLEXIBLE HOSE ........................ 78 SIONER" .................................................................94
LOW-PRESSURE FLEXIBLE HOSE : Removal Precaution Necessary for Steering Wheel Rota-
and Installation ........................................................ 78 B
tion After Battery Disconnect ...................................94
INTERNAL HEAT EXCHANGER PIPE ..................... 78 Precaution for Procedure without Cowl Top Cover....95
INTERNAL HEAT EXCHANGER PIPE : Removal Precautions for Removing Battery Terminal ............95
Precautions For Refrigerant System Service ..........96 C
and Installation ........................................................ 78
Service Equipment ..................................................99
HIGH-PRESSURE PIPE 1 ......................................... 79
HIGH-PRESSURE PIPE 1 : Removal and Installa- PREPARATION ......................................... 101 D
tion .......................................................................... 79
PREPARATION ............................................... 101
HIGH-PRESSURE PIPE 2 ......................................... 79 Special Service Tool .............................................. 101
HIGH-PRESSURE PIPE 2 : Removal and Installa- Commercial Service Tools ................................... 102 E
tion .......................................................................... 79 Sealant or/and Lubricant ....................................... 103

REFRIGERANT PRESSURE SENSOR .................... 80 SYSTEM DESCRIPTION ........................... 105 F

REFRIGERANT PRESSURE SENSOR : Remov-
al and Installation .................................................... 80 COMPONENT PARTS .................................... 105
Component Parts Location .................................... 105
CONDENSER .....................................................81 Component Description ......................................... 105 G
Exploded View ........................................................ 81
SYSTEM .......................................................... 106
CONDENSER ............................................................ 81 System Diagram .................................................... 106 H
CONDENSER : Removal and Installation ............... 81 System Description ................................................ 106
A/C UNIT ASSEMBLY .......................................83 BASIC INSPECTION ................................. 107
Exploded View ........................................................ 83 HA
DIAGNOSIS AND REPAIR WORKFLOW ...... 107
A/C UNIT ASSEMBLY ............................................... 86
Work Flow .............................................................. 107
A/C UNIT ASSEMBLY : Removal and Installation.... 86
J
REFRIGERANT ............................................... 109
EVAPORATOR .......................................................... 88
Description ............................................................. 109
EVAPORATOR : Removal and Installation ............. 89
Leak Test ............................................................... 109
HEATER CORE ......................................................... 89 Recycle Refrigerant ............................................... 111 K
HEATER CORE : Removal and Installation ............ 89 Charge Refrigerant ................................................ 111

EXPANSION VALVE ................................................. 90 LUBRICANT .................................................... 113 L

EXPANSION VALVE : Removal and Installation .... 90 Description ............................................................. 113
Inspection .............................................................. 113
SERVICE DATA AND SPECIFICATIONS Perform Lubricant Return Operation ..................... 113
(SDS) ............................................................ 92 Lubricant Adjusting Procedure for Components M
Replacement Except Compressor ......................... 113
SERVICE DATA AND SPECIFICATIONS Lubricant Adjusting Procedure for Compressor
(SDS) ..................................................................92 Replacement ......................................................... 114 N
Compressor ............................................................. 92
Lubricant ................................................................. 92 PERFORMANCE TEST .................................. 116
Refrigerant .............................................................. 92 Inspection .............................................................. 116
O
Engine Idling Speed ................................................ 92
Belt Tension ............................................................ 92 SYMPTOM DIAGNOSIS ............................ 118
TYPE 3 REFRIGERATION SYSTEM SYMPTOMS ...... 118 P
Trouble Diagnosis For Unusual Pressure .............. 118
HOW TO USE THIS MANUAL ..................... 93 Symptom Table ..................................................... 118
APPLICATION NOTICE .....................................93 NOISE .............................................................. 120
Information .............................................................. 93
Symptom Table ..................................................... 120
PRECAUTION .............................................. 94 REMOVAL AND INSTALLATION ............. 121

HA-3
COMPRESSOR ............................................... 121 Refrigerant ............................................................ 140
Exploded View .......................................................121 Engine Idling Speed .............................................. 140
Removal and Installation .......................................121 Belt Tension .......................................................... 140
Inspection ..............................................................122 TYPE 4
COOLER PIPE AND HOSE ............................. 123 HOW TO USE THIS MANUAL .................. 141
Exploded View .......................................................123
APPLICATION NOTICE ................................... 141
HIGH-PRESSURE FLEXIBLE HOSE ......................124 Information ............................................................ 141
HIGH-PRESSURE FLEXIBLE HOSE : Removal
and Installation ......................................................124 PRECAUTION ........................................... 142
LOW-PRESSURE FLEXIBLE HOSE .......................125 PRECAUTIONS ................................................ 142
LOW-PRESSURE FLEXIBLE HOSE : Removal Precaution for Supplemental Restraint System
and Installation ......................................................125 (SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................... 142
LOW-PRESSURE PIPE ...........................................125
Precaution Necessary for Steering Wheel Rota-
LOW-PRESSURE PIPE : Removal and Installa-
tion After Battery Disconnect ................................ 142
tion .........................................................................125
Precaution for Procedure without Cowl Top Cover. 143
HIGH-PRESSURE PIPE 1 ........................................126 Precautions for Removing Battery Terminal ......... 143
HIGH-PRESSURE PIPE 1 : Removal and Installa- Precautions For Refrigerant System Service ........ 144
tion .........................................................................126 Service Equipment ................................................ 147

HIGH-PRESSURE PIPE 2 ........................................126 PREPARATION ......................................... 149

HIGH-PRESSURE PIPE 2 : Removal and Installa-
tion .........................................................................126 PREPARATION ................................................ 149
Special Service Tool ............................................. 149
HIGH-PRESSURE PIPE 3 ........................................127 Commercial Service Tools .................................. 150
HIGH-PRESSURE PIPE 3 : Removal and Installa- Sealant or/and Lubricant ....................................... 151
tion .........................................................................127
SYSTEM DESCRIPTION .......................... 153
REFRIGERANT PRESSURE SENSOR ...................127
REFRIGERANT PRESSURE SENSOR : Remov- COMPONENT PARTS ...................................... 153
al and Installation ...................................................127 Component Parts Location ................................... 153
Component Description ........................................ 153
CONDENSER .................................................. 129
Exploded View .......................................................129 SYSTEM ........................................................... 154
System Diagram ................................................... 154
CONDENSER ...........................................................129 System Description ............................................... 154
CONDENSER : Removal and Installation .............129
BASIC INSPECTION ................................. 155
A/C UNIT ASSEMBLY ..................................... 131
Exploded View .......................................................131 DIAGNOSIS AND REPAIR WORKFLOW ........ 155
Work Flow ............................................................. 155
A/C UNIT ASSEMBLY .............................................134
A/C UNIT ASSEMBLY : Removal and Installation..134 REFRIGERANT ................................................ 157
Description ............................................................ 157
EVAPORATOR ........................................................136
Leak Test .............................................................. 157
EVAPORATOR : Removal and Installation ...........137
Recycle Refrigerant .............................................. 159
HEATER CORE ........................................................137 Charge Refrigerant ............................................... 159
HEATER CORE : Removal and Installation ..........137
LUBRICANT ..................................................... 161
EXPANSION VALVE ................................................138 Description ............................................................ 161
EXPANSION VALVE : Removal and Installation ..138 Inspection .............................................................. 161
Perform Lubricant Return Operation ..................... 161
SERVICE DATA AND SPECIFICATIONS Lubricant Adjusting Procedure for Components
(SDS) .......................................................... 140 Replacement Except Compressor ........................ 161
Lubricant Adjusting Procedure for Compressor
SERVICE DATA AND SPECIFICATIONS Replacement ......................................................... 162
(SDS) ................................................................ 140
Compressor ...........................................................140 PERFORMANCE TEST .................................... 164
Lubricant ................................................................140 Inspection .............................................................. 164
HA-4
SYMPTOM DIAGNOSIS ............................ 166 HIGH-PRESSURE PIPE 3 ....................................... 175
HIGH-PRESSURE PIPE 3 : Removal and Installa- A
REFRIGERATION SYSTEM SYMPTOMS ....... 166 tion ......................................................................... 175
Trouble Diagnosis For Unusual Pressure ............. 166
Symptom Table ..................................................... 166 REFRIGERANT PRESSURE SENSOR ................... 175
REFRIGERANT PRESSURE SENSOR : Remov- B
NOISE ............................................................... 168 al and Installation ................................................... 175
Symptom Table ..................................................... 168
CONDENSER .................................................. 177 C
REMOVAL AND INSTALLATION ............. 169 Exploded View ....................................................... 177

COMPRESSOR ................................................ 169 CONDENSER ........................................................... 177

Exploded View ...................................................... 169 CONDENSER : Removal and Installation ............. 177 D
Removal and Installation ....................................... 169
Inspection .............................................................. 170
A/C UNIT ASSEMBLY .................................... 179
Exploded View ....................................................... 179
E
COOLER PIPE AND HOSE ............................. 171
A/C UNIT ASSEMBLY ............................................. 182
Exploded View ...................................................... 171
A/C UNIT ASSEMBLY : Removal and Installation.. 182
HIGH-PRESSURE FLEXIBLE HOSE ...................... 172 F
EVAPORATOR ........................................................ 184
HIGH-PRESSURE FLEXIBLE HOSE : Removal
EVAPORATOR : Removal and Installation ........... 185
and Installation ...................................................... 172
HEATER CORE ....................................................... 185 G
LOW-PRESSURE FLEXIBLE HOSE ...................... 173
HEATER CORE : Removal and Installation .......... 185
LOW-PRESSURE FLEXIBLE HOSE : Removal
and Installation ...................................................... 173 EXPANSION VALVE ............................................... 186
EXPANSION VALVE : Removal and Installation .. 186 H
LOW-PRESSURE PIPE ........................................... 173
LOW-PRESSURE PIPE : Removal and Installa- SERVICE DATA AND SPECIFICATIONS
tion ........................................................................ 173
(SDS) .......................................................... 188 HA
HIGH-PRESSURE PIPE 1 ....................................... 174
HIGH-PRESSURE PIPE 1 : Removal and Installa-
SERVICE DATA AND SPECIFICATIONS
tion ........................................................................ 174 (SDS) ............................................................... 188
J
Compressor ........................................................... 188
HIGH-PRESSURE PIPE 2 ....................................... 174 Lubricant ................................................................ 188
HIGH-PRESSURE PIPE 2 : Removal and Installa- Refrigerant ............................................................. 188
tion ........................................................................ 174 Engine Idling Speed .............................................. 188 K
Belt Tension ........................................................... 188

HA-5
APPLICATION NOTICE
< HOW TO USE THIS MANUAL > [TYPE 1]

HOW TO USE THIS MANUAL

APPLICATION NOTICE
Information INFOID:0000000010709184

Check the vehicle type to use the service information in this section.

Service information Destination

Type 1 For Europe HRA2DDT engine models
• K9K engine models
Type 2 For Europe
• R9M engine models
• HRA2DDT engine models
Type 3 Except for Europe
• MR20DD engine models
• K9K engine models
Type 4 Except for Europe
• R9M engine models

HA-6
PRECAUTIONS
< PRECAUTION > [TYPE 1]

PRECAUTION A
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT B
PRE-TENSIONER" INFOID:0000000010451951

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along C
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 AIR BAG” and
“SEAT BELT” of this Service Manual.
WARNING: D
Always observe the following items for preventing accidental activation.
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision that would result in air bag inflation, all maintenance must be performed by E
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
F
Module, see “SRS AIR BAG”.
• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-
vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors. G
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING: H
Always observe the following items for preventing accidental activation.
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the
ignition ON or engine running, never use air or electric power tools or strike near the sensor(s) with
a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing HA
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. J
Precautions Necessary for Steering Wheel Rotation After Battery Disconnection
INFOID:0000000010451952

K
CAUTION:
Comply with the following cautions to prevent any error and malfunction.
• Before removing and installing any control units, first turn the ignition switch to the LOCK position,
then disconnect both battery cables. L
• After finishing work, confirm that all control unit connectors are connected properly, then re-connect
both battery cables.
• Always use CONSULT to perform self-diagnosis as a part of each function inspection after finishing M
work. If a DTC is detected, perform trouble diagnosis according to self-diagnosis results.
For vehicle with steering lock unit, if the battery is disconnected or discharged, the steering wheel will lock and
cannot be turned.
If turning the steering wheel is required with the battery disconnected or discharged, follow the operation pro- N
cedure below before starting the repair operation.
OPERATION PROCEDURE
O
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Turn the ignition switch to ACC position. P
(At this time, the steering lock will be released.)
3. Disconnect both battery cables. The steering lock will remain released with both battery cables discon-
nected and the steering wheel can be turned.
4. Perform the necessary repair operation.

HA-7
PRECAUTIONS
< PRECAUTION > [TYPE 1]
5. When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn
the ignition switch from ACC position to ON position, then to LOCK position. (The steering wheel will lock
when the ignition switch is turned to LOCK position.)
6. Perform self-diagnosis check of all control units using CONSULT.
Precaution for Procedure without Cowl Top Cover INFOID:0000000010451953

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

PIIB3706J

Precautions for Removing Battery Terminal INFOID:0000000010451954

When disconnecting the battery terminal, pay attention to the following.

• Always use a 12V battery as power source.
• Never disconnect battery terminal while engine is running.
• When removing the 12V battery terminal, turn OFF the ignition
switch and wait at least 30 seconds.
• For vehicles with the engine listed below, remove the battery termi-
nal after a lapse of the specified time:

D4D engine : 20 minutes ZD30DDTi : 60 seconds

HRA2DDT : 12 minutes ZD30DDTT : 60 seconds
K9K engine : 4 minutes
M9R engine : 4 minutes
R9M engine : 4 minutes
SEF289H
V9X engine : 4 minutes
YD25DDTi : 2 minutes
NOTE:
ECU may be active for several tens of seconds after the ignition switch is turned OFF. If the battery terminal
is removed before ECU stops, then a DTC detection error or ECU data corruption may occur.
• After high-load driving, if the vehicle is equipped with the V9X engine, turn the ignition switch OFF and wait
for at least 15 minutes to remove the battery terminal.
NOTE:
• Turbocharger cooling pump may operate in a few minutes after the ignition switch is turned OFF.
• Example of high-load driving
- Driving for 30 minutes or more at 140 km/h (86 MPH) or more.
- Driving for 30 minutes or more on a steep slope.
• For vehicles with the 2-batteries, be sure to connect the main battery and the sub battery before turning ON
the ignition switch.
NOTE:
If the ignition switch is turned ON with any one of the terminals of main battery and sub battery discon-
nected, then DTC may be detected.
• After installing the 12V battery, always check "Self Diagnosis Result" of all ECUs and erase DTC.
NOTE:
The removal of 12V battery may cause a DTC detection error.
Precautions For Refrigerant System Service INFOID:0000000010451955

GENERAL REFRIGERANT PRECAUTION

WARNING:

HA-8
PRECAUTIONS
< PRECAUTION > [TYPE 1]
• Never breathe A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose and
throat. Remove HFO-1234yf (R-1234yf) from the A/C system, using certified service equipment meet- A
ing requirements of SAE J-2843 [HFO-1234yf (R-1234yf) Recovery/Recycling/Recharging Equipment
for Flammable Refrigerants for Mobile Air Conditioning Systems]. Ventilate work area before resum-
ing service if accidental system discharge occurs. Additional health and safety information may be
B
obtained from refrigerant and lubricant manufacturers.
• Never release refrigerant into the air. Use approved recovery/recycling recharging equipment to cap-
ture the refrigerant each time an air conditioning system is discharged.
• Wear always eye and hand protection (goggles and gloves) when working with any refrigerant or air C
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 D
pail of water if container warming is required.
• Never intentionally drop, puncture, or incinerate refrigerant containers.
• Keep refrigerant away from open flames: poisonous gas is produced if refrigerant burns.
• Refrigerant displaces oxygen, therefore be certain to work in well ventilated areas to prevent suffo- E
cation.
• Never pressure test or leakage test HFO-1234yf (R-1234yf) service equipment and/or vehicle air con-
ditioning systems with compressed air during repair. Some mixtures of air and HFO-1234yf (R- F
1234yf) have been shown to be combustible at elevated pressures. These mixtures, if ignited, may
cause injury or property damage. Additional health and safety information may be obtained from
refrigerant manufacturers.
G
WORKING WITH HFO-1234yf (R-1234yf)
CAUTION:
• CFC-12 (R-12) or HFC-134a (R-134a) refrigerant and HFO-1234yf (R-1234yf) refrigerant are not com-
H
patible. Compressor malfunction is likely to occur if the refrigerants are mixed, refer to “CONTAMI-
NATED REFRIGERANT” below. To determine the purity of HFO-1234yf (R-1234yf) in the vehicle and
recovery tank, use Refrigerant recovery/recycling recharging equipment and Refrigerant Identifier.
• Use only specified lubricant for the HFO-1234yf (R-1234yf) A/C system and HFO-1234yf (R-1234yf) HA
components. Compressor malfunction is likely to occur if lubricant other than that specified is used.
• The specified HFO-1234yf (R-1234yf) lubricant rapidly absorbs moisture from the atmosphere. The
following handling precautions must be observed: J
- Cap (seal) immediately the component to minimize the entry of moisture from the atmosphere when
removing refrigerant components from a vehicle.
- Never remove the caps (unseal) until just before connecting the components when installing refrig-
erant components to a vehicle. Connect all refrigerant loop components as quickly as possible to K
minimize the entry of moisture into system.
- Use only the specified lubricant from a sealed container. Reseal immediately containers of lubricant.
Lubricant becomes moisture saturated and should not be used without proper sealing. L
- Never allow lubricant (ND-OIL 12) to come in contact with styrene foam parts. Damage may result.
CONTAMINATED REFRIGERANT
Take appropriate steps shown below if a refrigerant other than pure HFO-1234yf (R-1234yf) is identi- M
fied in a vehicle:
• Explain to the customer that environmental regulations prohibit the release of contaminated refrigerant into
the atmosphere.
• Explain that recovery of the contaminated refrigerant could damage service equipment and refrigerant sup- N
ply.
• Suggest the customer return the vehicle to the location of previous service where the contamination may
have occurred. O
• In case of repairing, recover the refrigerant using only dedicated equipment and containers. Never
recover contaminated refrigerant into the existing service equipment. Contact a local refrigerant prod-
uct retailer for available service if the facility does not have dedicated recovery equipment. This refrigerant
P
must be disposed of in accordance with all federal and local regulations. In addition, replacement of all
refrigerant system components on the vehicle is recommended.
• The air conditioner warranty is void if the vehicle is within the warranty period. Please contact Nissan Cus-
tomer Affairs for further assistance.
REFRIGERANT CONNECTION
A new type refrigerant connection has been introduced to all refrigerant lines except the following location.
• Expansion valve to evaporator

HA-9
PRECAUTIONS
< PRECAUTION > [TYPE 1]
• Refrigerant pressure sensor to high-pressure pipe1
WARNING:
Check that all refrigerant is discharged into the recycling equipment and the pressure in the system is
less than atmospheric pressure. Then gradually loosen the discharge side hose fitting and remove it.
CAUTION:
Observe the following when replacing or cleaning refrigerant cycle components.
• Store it in the same way at it is when mounted on the car when the compressor is removed. Failure
to do so will cause lubricant to enter the low-pressure chamber.
• Use always a torque wrench and a back-up wrench when connecting tubes.
• Plug immediately all openings to prevent entry of dust and moisture after disconnecting tubes.
• Connect the pipes at the final stage of the operation when installing an air conditioner in the vehicle.
Never remove the seal caps of pipes and other components until just before required for connection.
• Allow components stored in cool areas to warm to working area temperature before removing seal
caps. This prevents condensation from forming inside A/C components.
• Remove thoroughly moisture from the refrigeration system before charging the refrigerant.
• Replace always used O-rings.
• Apply lubricant to circle of the O-rings shown in illustration when connecting tube. Be careful not to
apply lubricant to threaded portion.

Name : ND-OIL12
• O-ring must be closely attached to the groove portion of tube.
• Be careful not to damage O-ring and tube when replacing the O-ring.
• Connect tube until a click can be heard. Then tighten the nut or bolt by hand. Check that the O-ring is
installed to tube correctly.
• Perform leakage test and make sure that there is no leakage from connections after connecting line.
Disconnect that line and replace the O-ring when the refrigerant leaking point is found. Then tighten
connections of seal seat to the specified torque.

RHA861F

HA-10
PRECAUTIONS
< PRECAUTION > [TYPE 1]
Service Equipment INFOID:0000000010451956

A
RECOVERY/RECYCLING RECHARGING 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. B
ELECTRICAL LEAK DETECTOR
Be certain to follow the manufacturer’s instructions for tester operation and tester maintenance.
C
VACUUM PUMP
The lubricant contained inside the vacuum pump is not compatible
with the specified lubricant for HFO-1234yf (R-1234yf) A/C systems.
D
The vent side of the vacuum pump is exposed to atmospheric pres-
sure. So the vacuum pump lubricant may migrate out of the pump
into the service hose. This is possible when the pump is switched
OFF after evacuation (vacuuming) and hose is connected to it. E
To prevent this migration, use a manual valve placed near the hose-
to-pump connection, as per the following.
• Vacuum pumps usually have a manual isolator valve as part of the F
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. G
• 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. H
Some one-way valves open when vacuum is applied and close
under no vacuum condition. Such valves may restrict the pump’s
ability to pull a deep vacuum and are not recommended.
HA

RHA270DA
J

MANIFOLD GAUGE SET

Be certain that the gauge face indicates HFO-1234yf or R-1234yf. Be sure the gauge set has 1/2″-16 ACME K
threaded connections for service hoses. Confirm the set has been used only with refrigerant HFO-1234yf (R-
1234yf) and specified lubricants.
SERVICE HOSES L
Be certain that the service hoses display the markings described. 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 M
Never attempt to connect HFO-1234yf (R-1234yf) service couplers
to the CFC-12 (R-12) and HFC-134a (R-134a) A/C system. The
HFO-1234yf (R-1234yf) couplers do not properly connect to the N
CFC-12 (R-12) and HFC-134a (R-134a) system. However, if an
improper connection is attempted, discharging and contamination
may occur.
O
Shut-off valve rotation A/C service valve
Clockwise Open
P
Counterclockwise Close RHA273D

REFRIGERANT WEIGHT SCALE

HA-11
PRECAUTIONS
< PRECAUTION > [TYPE 1]
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.

HA-12
PREPARATION
< PREPARATION > [TYPE 1]

PREPARATION A
PREPARATION
Commercial Service Tools INFOID:0000000010451960
B

HFO-1234yf (R-1234yf) Service Tool and Equipment

• Never mix HFO-1234yf (R-1234yf) refrigerant and/or its specified lubricant with CFC-12 (R-12) and HFC- C
134a (R-134a) 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 which handles D
refrigerant and/or lubricant) are different between CFC-12 (R-12), HFC-134a (R-134a) and HFO-1234yf (R-
1234yf). 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 E
compressor malfunction may result.

Tool name Description

G
Function:
Recovery/recycling/recharg- • Refrigerant recovery, recycling and re-
ing equipment charging H
• Compliant with HFO-1234yf (R-1234yf)

HA
RJIA0195E

K
Power supply:
Electrical leak detector
DC 12 V (Cigarette lighter)

SHA705EB
M

N
Identification:
• The gauge face indicates HFO-1234yf
Manifold gauge set (with hos- (R-1234yf).
es and couplers) Fitting size: Thread size O
• 1/2″-16 ACME

P
RJIA0196E

HA-13
PREPARATION
< PREPARATION > [TYPE 1]
Tool name Description

Service hoses Hose fitting to gauge:

• High-pressure side hose
• Low-pressure side hose • 1/2″-16 ACME
• Utility hose Compliant with HFO-1234yf (R-1234yf)

S-NT201

Hose fitting to service hose:

Service couplers
M14 x 1.5 fitting is optional or permanently
• High-pressure side coupler
attached.
• Low-pressure side coupler
Compliant with HFO-1234yf (R-1234yf)

S-NT202

For measuring of refrigerant

Fitting size: Thread size
Refrigerant weight scale
1/2″-16 ACME
Compliant with HFO-1234yf (R-1234yf)

S-NT200

Capacity:
• Air displacement: 4 CFM
• Micron rating: 20 microns
Vacuum pump • Oil capacity: 482 g (17 oz.)
(Including the isolator valve) Fitting size: Thread size
• 1/2″-16 ACME
Compliant with HFO-1234yf (R-1234yf)
S-NT203

Sealant or/and Lubricant INFOID:0000000010451961

HFO-1234yf (R-1234yf) Service Tool and Equipment

• Never mix HFO-1234yf (R-1234yf) refrigerant and/or its specified lubricant with CFC-12 (R-12) and HFC-
134a (R-134a) 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 which handles
refrigerant and/or lubricant) are different between CFC-12 (R-12), HFC-134a (R-134a) and HFO-1234yf (R-
1234yf). 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.

HA-14
PREPARATION
< PREPARATION > [TYPE 1]

Tool name Description A

Container color: Light blue

Container marking: HFO-1234yf (R- B
HFO-1234yf (R-1234yf) refrigerant 1234yf)
Fitting size: Thread size
• Large container 1/2″-16 ACME
C
S-NT196

D
Type: Polyalkylene glycol oil (PAG)
Application:
ND-OIL12 HFO-1234yf (R-1234yf) swash plate
compressors E
Capacity: 40 m (1.4 Imp fl oz.)

JMIIA1759ZZ

HA-15
COMPONENT PARTS
< SYSTEM DESCRIPTION > [TYPE 1]

SYSTEM DESCRIPTION
COMPONENT PARTS
Component Parts Location INFOID:0000000010451962

JMIIA3523ZZ

1. Refrigerant pressure sensor 2. Compressor 3. Condenser

4. Liquid tank 5. Expansion valve 6. Evaporator
A. Built-in A/C unit assembly

Component Description INFOID:0000000010451963

Component Description
The mist form liquid refrigerant transforms to gas by evaporation by the air conveyed from blower
Evaporator
motor. The air is cooled by the heat by evaporation.
Condenser Cools refrigerant discharged from compressor, and transforms it to liquid refrigerant.
Compressor Intakes, compresses, and discharges refrigerant, to circulate refrigerant inside the refrigerant cycle.
Refer to HAC-19, "Refrigerant Pressure Sensor" (AUTOMATIC AIR CONDITIONING SYSTEM) or
Refrigerant pressure sensor
HAC-148, "Refrigerant Pressure Sensor" (MANUAL AIR CINDITIONING SYSTEM).
Liquid tank Eliminates foreign matter in refrigerant, and stores temporarily liquid refrigerant.
Transforms high-pressure liquid refrigerant to mist form low-pressure liquid refrigerant by drawing
Expansion valve
function.

HA-16
SYSTEM
< SYSTEM DESCRIPTION > [TYPE 1]
SYSTEM
A
System Diagram INFOID:0000000010451964

JMIIA3115GB
HA

System Description INFOID:0000000010451965

J
REFRIGERANT CYCLE
Refrigerant Flow
The refrigerant from the compressor, flows the condenser with liquid tank, the evaporator, and returns to the K
compressor. The refrigerant evaporation in the evaporator is controlled by an expansion valve.
Freeze Protection
When intake sensor detects that evaporator surface temperature is 2°C (36°F) or less, A/C auto amp. (Auto- L
matic air conditioning) or A/C amp. (Manual air conditioning) requests ECM to turn the compressor OFF, and
ECM makes A/C relay to OFF, and stops the compressor.
REFRIGERANT SYSTEM PROTECTION M

Refrigerant Pressure Sensor

• The refrigerant system is protected against excessively high- or low-pressures by the refrigerant pressure
N
sensor, installed at the high-pressure pipe 1. The refrigerant pressure sensor detects the pressure inside the
refrigerant line and sends the voltage signal to the ECM if the system pressure rises above, or falls below
the specifications.
• ECM turns the A/C relay to OFF and stops the compressor when the high-pressure side detected by refriger- O
ant pressure sensor is following conditions;
- Approximately 3,120 kPa (31.2 bar, 31.8 kg/cm2, 452 psi) or more (Engine speed is less than 1,500 rpm.)
- Approximately 2,740 kPa (27.4 bar, 27.9 kg/cm2, 397 psi) or more (Engine speed is 1,500 rpm or more.) P
- Approximately 140 kPa (1.4 bar, 1.4 kg/cm2, 20 psi) or less
Pressure Relief Valve
The refrigerant system is also protected by a pressure relief valve, located in the rear head of the compressor.
The release port on the pressure relief valve automatically opens and releases refrigerant into the atmosphere
when the pressure of refrigerant in the system increases to an unusual level [more than 3,800 kPa (38 bar,
38.8 kg/cm2, 551 psi)].

HA-17
DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION > [TYPE 1]

BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow INFOID:0000000010451966

OVERALL SEQUENCE

NNIIA0143GB

DETAILED FLOW
1.INTERVIEW FOR MALFUNCTION
Interview the symptom to the customer.

HA-18
DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION > [TYPE 1]
>> GO TO 2.
2.SYMPTOM CHECK A

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

Insufficient cooling/heating>>GO TO 3.
Refrigerant leakage>>GO TO 6.
C
Noise >> GO TO 7.
3.CONTROL SYSTEM DIAGNOSIS
Perform the system diagnosis for the A/C control system. Refer to HAC-68, "Work Flow" (AUTOMATIC AIR D
CONDITIONING SYSTEM) or HAC-182, "Work Flow" (MANUAL AIR CONDITIONING SYSTEM), HAC-261,
"Work Flow" (MANUAL HEATER).
Is A/C control system normal? E
YES >> GO TO 4.
NO >> GO TO 8.
4.PERFORMANCE TEST F
Perform the performance test. Check the operation of each part. Refer to HA-26, "Inspection".

G
>> GO TO 5.
5.TROUBLE DIAGNOSIS FOR UNUSUAL PRESSURE
Diagnose using a manifold gauge whenever system's high and/or low side pressure(s) is/are unusual. Specify H
the malfunctioning part. Refer to HA-28, "Symptom Table".

Low refrigerant charge>>GO TO 6. HA

Except above>>GO TO 8.
6.CHECK REFRIGERANT FOR LEAKAGES J
Check refrigerant for leakages. Specify the malfunctioning part. Refer to HA-20, "Leak Test".

>> GO TO 8. K
7.TROUBLE DIAGNOSIS FOR NOISE
Perform trouble diagnosis for noise. Specify the malfunctioning part. Refer to HA-30, "Symptom Table".
L

>> GO TO 8.
8.MALFUNCTION PART REPAIR M
Repair or replace the malfunctioning part.

N
>> GO TO 9.
9.REPAIR CHECK (OPERATION CHECK)
Check the operation of each part. O
Does it operate normally?
YES >> INSPECTION END
NO >> GO TO 2. P

HA-19
REFRIGERANT
< BASIC INSPECTION > [TYPE 1]
REFRIGERANT
Description INFOID:0000000010451967

CONNECTION OF SERVICE TOOLS AND EQUIPMENT

JSIIA0258ZZ

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

equipment
4. Vacuum pump 5. Manifold gauge set 6. Refrigerant container (HFO-1234yf)
7. Weight scale
A. Preferred (best) method B. Alternative method C. For charging

Leak Test INFOID:0000000010451968

CHECK REFRIGERANT LEAKAGE USING ELECTRICAL LEAK DETECTOR

WARNING:
Never check refrigerant leakage while the engine is running.
CAUTION:
Be careful of the following items so that inaccurate checks or misidentifications are avoided.
• Never allow refrigerant vapor, shop chemical vapors, cigarette smoke, or others around the vehicle.
• Always check refrigerant leakage in a low air flow environment so that refrigerant may not disperse
when leakage occurs.
1. Stop the engine.
2. Connect recovery/recycling/recharging equipment or manifold gauge set to A/C service valve.
3. Check that A/C refrigerant pressure is 345 kPa (3.45 bar, 3.52 kg/cm2, 50 psi) or more when temperature
is 16°C (61°F) or more. When pressure is lower than the specified value, recycle refrigerant completely
and fill refrigerant to the specified level.
NOTE:
Leakages may not be detected if A/C refrigerant pressure is 345 kPa (3.45 bar, 3.52 kg/cm2, 50 psi) or
less when temperature is less than 16°C (61°F).
4. Clean area where refrigerant leakage check is performed, and check refrigerant leakage along all sur-
faces of pipe connections and A/C system components using electrical leak detector probe.
CAUTION:
• Continue checking when a leakage is found. Always continue and complete checking along all
pipe connections and A/C system components for additional leakage.
• When a leakage is detected, clean leakage area using compressed air and check again.
• When checking leakage of cooling unit inside, always clean inside of drain hose so that the
probe surface may not be exposed to water or dirt.
NOTE:

HA-20
REFRIGERANT
< BASIC INSPECTION > [TYPE 1]
• Always check leakage starting from high-pressure side and continue to low-pressure side.
• When checking leakage of cooling unit inside, operate blower fan motor for 15 minutes or more at the A
maximum fan speed while the engine is stopped, and then insert electrical leak detector probe into drain
hose and hold for 10 minutes or more.
• When disconnecting shut-off valve that is connected to A/C service valve, always evacuate remaining
B
refrigerant so that misidentification can be avoided.
5. Repair or replace parts where refrigerant leakage is detected. (Leakage is detected but leakage area is
unknown. GO TO 6.)
C
6. Start the engine and set A/C control in the following conditions.
• A/C switch ON
• Air flow: VENT (ventilation)
• Intake door position: Recirculation D
• Temperature setting: Full cold
• Fan speed: Maximum speed set
7. Run the engine at approximately 1,500 rpm for 2 minutes or more. E
8. Stop the engine. Check again for refrigerant leakage. GO TO 4.
WARNING:
Never get burned when the engine is hot. F
NOTE:
• Start refrigerant leakage check immediately after the engine is
stopped.
G
• When refrigerant circulation is stopped, pressure on the low-
pressure side rises gradually, and after this, pressure on the
high-pressure side falls gradually.
• The higher the pressure is, the easier it is to find the refriger- H
ant leakage.

SHA839E

Recycle Refrigerant INFOID:0000000010451969

WARNING:
• Always use HFO-1234yf for A/C refrigerant. If CFC-12 or HFC-134a is accidentally charged, compres- K
sor is damaged due to insufficient lubrication.
• Always observe and follow precautions described on refrigerant container. Incorrect handling may
result in an explosion of refrigerant container, frostbite, or the loss of eyesight. L
• Never breathe A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose, or
throat.
• Never allow HFO-1234yf to be exposed to an open flame or others because it generates poisonous
gas when in contact with high temperature objects. Keep workshop well ventilated. M
1. Perform lubricant return operation. Refer to HA-23, "Perform Lubricant Return Operation". (If refrigerant or
lubricant leakage is detected in a large amount, omit this step, and then GO TO 2.)
CAUTION: N
Never perform lubricant return operation if a large amount of refrigerant or lubricant leakage is
detected.
2. Check gauge pressure readings of recovery/recycling/recharging equipment. When remaining pressure O
exists, recycle refrigerant from high-pressure hose and low-pressure hose.
NOTE:
Follow manufacturer instructions for the handling or maintenance of the equipment. Never fill the equip-
ment with non-specified refrigerant. P
3. Remove A/C service valve cap from the vehicle.
4. Connect recovery/recycling/recharging equipment to A/C service valve.
5. Operate recovery/recycling/recharging equipment, and recycle refrigerant from the vehicle.
6. Evacuate air for 10 minutes or more to remove any remaining refrigerant integrated to compressor lubri-
cant, etc.
7. Refrigerant recycle operation is complete.

HA-21
REFRIGERANT
< BASIC INSPECTION > [TYPE 1]
Charge Refrigerant INFOID:0000000010451970

WARNING:
• Always use HFO-1234yf for A/C refrigerant. If CFC-12 or HFC-134a is accidentally charged, compres-
sor is damaged due to insufficient lubrication.
• Always observe and follow precautions described on refrigerant container. Incorrect handling may
result in an explosion of refrigerant container, frostbite, or the loss of eyesight.
• Never breathe A/C refrigerant and lubricant vapor or mist. Exposure my irritate eyes, nose, or throat.
• Never allow HFO-1234yf to be exposed to an open flame or others because it generates poisonous
gas when in contact with high temperature objects. Keep workshop well ventilated.
1. Connect recovery/recycling/recharging equipment to the A/C service valve.
2. Operate recovery/recycling/recharging equipment, and evacuate air from A/C system for 25 minutes or
more.
CAUTION:
Evacuate air for 15 minutes or more if the parts are replaced.
3. Check the airtightness of A/C system for 25 minutes or more. If pressure rises more than the specified
level, charge A/C system with approximately 200 g (0.4 lb) refrigerant and check that there is no refriger-
ant leakage. Refer to HA-20, "Leak Test".
CAUTION:
Check the airtightness for 15 minutes or more if the parts are replaced.
4. If parts other than compressor are replaced, fill compressor lubricant according to parts that are replaced.
5. Charge the specified amount of refrigerant to A/C system.
6. Check that A/C system operates normally.
7. Disconnect recovery/recycling/recharging equipment. (Collect the refrigerant from the high-pressure hose
and low-pressure hose of recovery/recycling/recharging equipment.)
8. Install A/C service valve cap.
9. Refrigerant charge is complete.

HA-22
LUBRICANT
< BASIC INSPECTION > [TYPE 1]
LUBRICANT
A
Description INFOID:0000000010451971

MAINTENANCE OF LUBRICANT LEVEL B

The compressor lubricant is circulating in the system together with the refrigerant. It is necessary to fill com-
pressor with lubricant when replacing A/C system parts or when a large amount of refrigerant leakage is
detected. It is important to always maintain lubricant level within the specified level. Otherwise, the following C
conditions may occur.
• Insufficient lubricant amount: Stuck compressor
• Excessive lubricant amount: Insufficient cooling (caused by insufficient heat exchange)
D
Name : ND-OIL12

Inspection INFOID:0000000010451972 E

If a compressor is malfunctioning (internal noise, insufficient cooling), check the compressor oil.
1.COMPRESSOR OIL JUDGMENT F
1. Remove the compressor. Refer to HA-31, "Removal and Installation".
2. Sample a compressor oil and judge on the figure.
G

JSIIA0927GB

J
Judgement result 1>>Replace compressor only.
Judgement result 2>>Replace compressor and condenser & liquid tank assembly.
K
Perform Lubricant Return Operation INFOID:0000000010451973

CAUTION:
If a large amount of refrigerant or lubricant leakage is detected, never perform lubricant return opera- L
tion.
1. Start the engine and set to the following conditions.
• Engine speed: Idling to 1,200 rpm M
• A/C switch: ON
• Fan speed: Maximum speed set
• Intake door position: Recirculation
• Temperature setting: Full cold N
2. Perform lubricant return operation for approximately 10 minutes.
3. Stop the engine.
O
4. Lubricant return operation is complete.
Lubricant Adjusting Procedure for Components Replacement Except Compressor
INFOID:0000000010451974 P
Fill with lubricant for the amount that is calculated according to the following conditions.
Example: Lubricant amount to be added when replacing evaporator and condenser&liquid tank assembly [m
(Imp fl oz.)] = 35 (1.2) + 20 (0.7) + α

HA-23
LUBRICANT
< BASIC INSPECTION > [TYPE 1]

Lubricant amount to be added to A/C system

Conditions
m (Imp fl oz.)
Replace evaporator 35 (1.2)
Replace condenser & liquid tank assembly 20 (0.7)
Large amount leakage 30 (1.1)
Refrigerant leakage is detected
Small amount leakage —
Lubricant amount that is recycled together with refrigerant during recycle operation α

Lubricant Adjusting Procedure for Compressor Replacement INFOID:0000000010451975

1. Drain lubricant from removed compressor and measure lubricant amount.

• Remove drain bolt (A), and then drain lubricant from drain
port.
• Measure total amount of lubricant that is drained from
removed compressor.

JMIIA3527ZZ

2. Drain lubricant from a new compressor that is calculated accord-

ing to the following conditions.

Amount to be drained (A) [m (Imp fl oz.)] = F − (D

+ S + R + α)
F : Lubricant amount that a new compressor
contains [110 (3.9)]
D : Lubricant amount that is drained from re-
moved compressor
S : Lubricant amount that remains inside of re- JPIIA1455GB

moved compressor [20 (0.7)]

R : Lubricant amount to be added according to
components that are removed except com-
pressor
α : Lubricant amount that is recycled together
with refrigerant during recycle operation
CAUTION:
If lubricant amount that is drained from removed compressor is less than 60 m (2.1 Imp fl oz.),
perform calculation by setting “D” as 40 m (1.4 Imp fl oz.).

Lubricant amount to be added to A/C system

Conditions
m (Imp fl oz.)
Replace evaporator 35 (1.2)
Replace condenser & liquid tank assembly 20 (0.7)
Example: Lubricant amount to be drained from a new compressor when replacing compressor and con-
denser & liquid tank assembly [m (Imp fl oz.)] [D = 60 (2.1), α = 5 (0.2)]
110 (3.9) − [60 (1.6) + 20 (0.7) + 5 (0.2)] = 35 (1.2)
3. Tighten drain bolt to the specified torque.

HA-24
LUBRICANT
< BASIC INSPECTION > [TYPE 1]

Specified torque : 30 N·m (306 kg-m, 22 ft-lb) A

4. Install compressor and check the operation.
B

HA-25
PERFORMANCE TEST
< BASIC INSPECTION > [TYPE 1]
PERFORMANCE TEST
Inspection INFOID:0000000010451976

INSPECTION PROCEDURE
1. Connect recovery/recycling/recharging equipment (for HFO-1234yf) or manifold gauge.
2. Start the engine, and set to the following condition.
Test condition
Surrounding condition Indoors or in the shade (in a well-ventilated place)
Door Closed
Door glass Full open
Vehicle condition
Hood Open
Engine speed Idle speed
Temperature control switch or dial Full cold
A/C switch ON
A/C condition Air outlet VENT (ventilation)
Intake door position Recirculation
Fan speed Maximum speed set
3. Maintain test condition until A/C system becomes stable. (More than 15 minutes)
4. Check that test results of “recirculating-to-discharge air temperature” and “ambient air temperature-to-
operating pressure” are within the specified value.
5. When test results are within the specified value, inspection is complete.
If any of test result is out of the specified value, perform diagnosis by gauge pressure. Refer to HA-28,
"Symptom Table".
RECIRCULATING-TO-DISCHARGE AIR TEMPERATURE TABLE

Inside air (Recirculating air) at blower assembly inlet

Discharge air temperature from center ventilator
Relative humidity Air temperature °C (°F)
% °C (°F)
15 (59) 2.4 – 3.9 (36 – 39)
20 (68) 8.4 – 10.4 (47 – 51)
50 – 60
25 (77) 13.0 – 15.5 (55 – 66)
30 (86) 16.9 – 19.8 (62 – 68)
15 (59) 3.9 – 5.3 (39 – 42)
20 (68) 10.4 – 12.5 (51 – 55)
60 – 70
25 (77) 15.5 – 18.0 (60 – 64)
30 (86) 19.8 – 22.7 (68 – 73)

AMBIENT AIR TEMPERATURE-TO-OPERATING PRESSURE TABLE

HA-26
PERFORMANCE TEST
< BASIC INSPECTION > [TYPE 1]
Fresh air
High-pressure (Discharge side) Low-pressure (Suction side) A
Relative humidity Air temperature kPa (bar, kg/cm2, psi) kPa (bar, kg/cm2, psi)
% °C (°F)
870 – 1,070
200 – 240 B
25 (77) (8.7 – 10.7, 8.9 – 10.9, 126.1 –
(2.0 – 2.4, 2.0 – 2.4, 29.0 – 34.8)
155.2)
940 -– 1,150
210 – 250
30 (86) (9.4 – 11.5, 9.6 – 11.7, 136.3 – C
(2.1 – 2.5, 2.1 – 2.6, 30.5 – 36.3)
166.8)
50 – 70
1,100 – 1,440
240 – 300
35 (95) (11.0 – 14.4, 11.2 – 14.7, 159.5 – D
(2.4 – 3.0, 2.4 – 3.1, 34.8 – 43.5)
208.8)
1,300 – 1,580
290 – 350
40 (104) (13.0 – 15.8, 13.3 – 16.1, 188.5 –
(2.9 – 3.5, 3.0 – 3.6, 42.1 – 50.8) E
229.1)

HA-27
REFRIGERATION SYSTEM SYMPTOMS
< SYMPTOM DIAGNOSIS > [TYPE 1]

SYMPTOM DIAGNOSIS
REFRIGERATION SYSTEM SYMPTOMS
Trouble Diagnosis For Unusual Pressure INFOID:0000000010451978

Diagnose using a manifold gauge whenever system’s high and/or low side pressure(s) is/are unusual. The
marker above the gauge scale in the following tables indicates the standard (usual) pressure range. Refer to
above table (Ambient air temperature-to-operating pressure table) since the standard (usual) pressure, how-
ever, differs from vehicle to vehicle.
Symptom Table INFOID:0000000010451979

Gauge indication Refrigerant cycle Probable cause Corrective action

Collect all refrigerant, evacuate
The pressure returns to nor-
refrigerant cycle again, and
mal soon after sprinkling wa- Overfilled refrigerant.
then refill it with the specified
ter on condenser.
amount of refrigerant.
Insufficient condenser cooling
performance.
Both high- and low-pressure sides • Poor fan rotation of radiator • Repair or replace malfunc-
are too high. Air flow to condenser is insuf- and condenser. tioning parts.
ficient. • Improper installation of air • Clean and repair condenser
guide. fins.
• Clogged or dirty condenser
fins.
When compressor is stopped,
a high-pressure reading Collect all refrigerant, evacuate
AC359A
quickly drops by approximate- refrigerant cycle again, and
Air mixed in refrigerant cycle.
ly 196 kPa (1.96bar, 2 kg/cm2, then refill it with the specified
28 psi). It then gradually de- amount of refrigerant.
creases.
• Low-pressure pipe is cooler
than the outlet of evapora- Expansion valve opened too
tor. much (excessive flow of refrig- Replace expansion valve.
• Low-pressure pipe is frost- erant).
ed.
High-pressure side is excessively
high and low-pressure side is too
low.
High-pressure pipe and upper
Clogged or crushed high-pres-
side of condenser become Repair or replace the malfunc-
sure pipe located between
hot, however, liquid tank does tioning parts.
compressor and condenser.
not become so hot.

AC360A

High-pressure side is too low and

low-pressure side is too high. • The readings of both sides
Malfunction in compressor sys-
become equal soon after
tem (insufficient compressor
compressor operation
pressure operation).
stops. Replace compressor.
• Damage or breakage of
• There is no temperature dif-
valve.
ference between high- and
• Malfunctioning gaskets.
low-pressure sides.
AC356A

HA-28
REFRIGERATION SYSTEM SYMPTOMS
< SYMPTOM DIAGNOSIS > [TYPE 1]
Gauge indication Refrigerant cycle Probable cause Corrective action
A
• The area around evapora-
Clogged expansion valve.
tor outlet does not become
• Breakage of temperature Eliminate foreign material from
cold.
sensor. expansion valve, or replace it.
• The area around evapora- B
• Clogging by foreign material.
tor inlet becomes frosted.
• There is a temperature dif-
ference between the areas
around outlet and inlet Malfunction in inner liquid tank Replace condenser & liquid
C
Both high- and low-pressure sides pipes of liquid tank. (clogged strainer). tank assembly.
are too low. • Liquid tank becomes frost-
ed. D
Clogged or crushed low-pres- Repair or replace malfunction-
sure pipe. ing parts.
Check intake sensor system. E
Refer to HAC-82, "Diagnosis
Evaporator becomes frosted. Procedure" (AUTOMATIC AIR
AC353A Malfunction in intake sensor. CONDITIONING SYSTEM) or
HAC-191, "Diagnosis Proce- F
dure" (MANUAL AIR CONDI-
TIONING SYSTEM).
• Check for leakage. G
There is a small temperature
• Collect all refrigerant, evacu-
difference between the high • Shortage of refrigerant.
ate refrigerant cycle again,
and low pressure pipes for re- • Leakage of refrigerant.
and then refill it with the spec-
frigerant cycle.
ified amount of refrigerant. H
Low-pressure side sometimes be-
comes negative. • Collect all refrigerant.
• Sometimes the area
around evaporator outlet • Icing caused by the mixing of
• Evacuate refrigerant cycle HA
completely, and then refill it
does not become cold. water in cooler cycle.
with the specified amount of
• Sometimes the area • Deteriorated dryer in liquid
refrigerant. At this time, al-
around evaporator inlet is tank. J
ways replace condenser &
frosted.
liquid tank assembly.
AC354A

• Replace compressor. K
• Check ECV system. Refer to
HAC-114, "Diagnosis Proce-
There is no temperature dif-
Malfunctioning variable valve dure" (AUTOMATIC AIR
Hunting in high-pressure side. ference between high- and L
in compressor. CONDITIONING SYSTEM),
low-pressure sides.
HAC-211, "Diagnosis Proce-
dure" (MANUAL AIR CONDI-
TIONING SYSTEM).
M

HA-29
NOISE
< SYMPTOM DIAGNOSIS > [TYPE 1]
NOISE
Symptom Table INFOID:0000000010451980

Symptom Noise source Probable cause Corrective action

Wear, breakage, or clogging of foreign Check compressor oil. Re-
Inside of compressor
material in inner parts. fer to HA-23, "Inspection".
Check clearance between
Unusual noise from compressor Magnet clutch Contact of clutch disc with pulley. clutch disc and pulley. Refer
when A/C is ON. to HA-32, "Inspection".
Check bolts for tightness.
Compressor body Loosened compressor mounting bolts. Refer to HA-31, "Exploded
View".
Check the installation condi-
Cooler piping (pipe and Improper installation of clip and brack- tion of the cooler piping. Re-
Unusual noise from cooler piping.
flexible hose) et. fer to HA-33, "Exploded
View".
• Check for leakage.
• Collect all refrigerant,
evacuate refrigerant cycle
Shortage of refrigerant.
again, and then refill it
Unusual noise from expansion with the specified amount
Expansion valve
valve when A/C is ON. of refrigerant.
Eliminate foreign material
Wear, breakage, or clogging of foreign
from expansion valve, or re-
material in inner parts.
place it.
Check belt tension. Refer to
Loosened belt
Unusual noise from belt. — EM-16, "Checking".
Internal compressor parts get locked Replace compressor.

HA-30
COMPRESSOR
< REMOVAL AND INSTALLATION > [TYPE 1]

REMOVAL AND INSTALLATION A

COMPRESSOR
Exploded View INFOID:0000000010451982
B

REMOVAL
C

H
JMIIA3525GB

1. Compressor
HA
: N·m (kg-m, ft-lb)

Removal and Installation INFOID:0000000010451983

J
CAUTION:
Perform lubricant return operation before each refrigeration system disassembly. However, if a large
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to HA- K
23, "Perform Lubricant Return Operation".
REMOVAL
1. Use a refrigerant collecting equipment (for HFO-1234yf) to discharge the refrigerant. Refer to HA-21, L
"Recycle Refrigerant".
2. Remove drive belt. Refer to EM-16, "Removal and Installation".
M
3. Remove mounting bolts, and then disconnect low-pressure flexible hose and high-pressure flexible hose
from the compressor.
CAUTION:
Cap or wrap the joint of the A/C piping and compressor with suitable material such as vinyl tape to N
avoid the entry of air.
4. Disconnect compressor harness connectors.
5. Remove mounting bolts and nut, and then remove compressor form the vehicle. O
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION: P
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Perform lubricant adjusting procedure before installing new compressor. Refer to HA-24, "Lubricant
Adjusting Procedure for Compressor Replacement".
• Check for leakages when recharging refrigerant. Refer to HA-20, "Leak Test".
• Check tension of the drive belt after installing compressor. Refer to EM-16, "Checking"

HA-31
COMPRESSOR
< REMOVAL AND INSTALLATION > [TYPE 1]
Inspection INFOID:0000000010451985

CHECK DISC TO PULLEY CLEARANCE

Check the clearance (B) between pulley assembly (1) and clutch
disc (2) along the entire periphery with a feeler gauge (A).

Clearance : Refer to HA-48, "Compressor".

CAUTION:
Replace compressor if the specified clearance is not obtained,
replace adjusting spacer and readjust.

JSIIA0087ZZ

HA-32
COOLER PIPE AND HOSE
< REMOVAL AND INSTALLATION > [TYPE 1]
COOLER PIPE AND HOSE
A
Exploded View INFOID:0000000010451986

L
JMIIA3516GB

1. A/C unit assembly 2. O-ring 3. Internal heat exchanger pipe M

4. High-pressure pipe 1 5. Refrigerant pressure sensor 6. Condenser & liquid tank assembly
7. High-pressure pipe 2 8. High-pressure flexible hose 9. Compressor
10. Low-pressure flexible hose N
: Always replace after every disassembly.

: N·m (kg-m, in-lb)

O
: N·m (kg-m, ft-lb)

HIGH-PRESSURE FLEXIBLE HOSE P

HIGH-PRESSURE FLEXIBLE HOSE : Removal and Installation INFOID:0000000010451987

HA-33
COOLER PIPE AND HOSE
< REMOVAL AND INSTALLATION > [TYPE 1]
REMOVAL
1. Use a refrigerant collecting equipment (for HFO-1234yf) to discharge the refrigerant. Refer to HA-21,
"Recycle Refrigerant".
2. Remove mounting bolt, and then disconnect high-pressure flexible hose from the high-pressure pipe 2.
CAUTION:
Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid the entry
of air.
3. Remove mounting bolt, and then disconnect high-pressure flexible hose from the compressor.
CAUTION:
Cap or wrap the joint of the A/C piping and compressor with suitable material such as vinyl tape to
avoid the entry of air.
4. Remove high-pressure flexible hose from the vehicle.
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to HA-20, "Leak Test".
LOW-PRESSURE FLEXIBLE HOSE
LOW-PRESSURE FLEXIBLE HOSE : Removal and Installation INFOID:0000000010451988

HA-34
COOLER PIPE AND HOSE
< REMOVAL AND INSTALLATION > [TYPE 1]
CAUTION:
Cap or wrap the joint of the A/C piping and expansion valve with suitable material such as vinyl A
tape to avoid the entry of air.
4. Remove mounting bolts, and then disconnect high-pressure pipe 1 and low-pressure flexible hose from
internal heat exchanger pipe. B
CAUTION:
Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid the entry
of air.
C
5. Remove mounting bolt, and then remove internal heat exchanger pipe.
INSTALLATION
Note the following items, and then install in the reverse order of removal. D
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to HA-20, "Leak Test".
E
HIGH-PRESSURE PIPE 1
HIGH-PRESSURE PIPE 1 : Removal and Installation INFOID:0000000010451990

F
CAUTION:
Perform lubricant return operation before each refrigeration system disassembly. However, if a large
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to HA-
G
23, "Perform Lubricant Return Operation".
REMOVAL
1. Use a refrigerant collecting equipment (for HFO-1234yf) to discharge the refrigerant. Refer to HA-21, H
"Recycle Refrigerant".
2. Remove front bumper fascia assembly. Refer to EXT-19, "Removal and Installation".
3. Remove mounting bolt, and then disconnect high-pressure pipe 1 from internal heat exchanger pipe. HA
CAUTION:
Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid the entry
of air. J
4. Remove mounting bolt, and then disconnect high-pressure pipe 1 from the condenser & liquid tank
assembly.
CAUTION:
K
Cap or wrap the joint of the A/C piping and condenser with suitable material such as vinyl tape to
avoid the entry of air.
5. Disconnect refrigerant pressure sensor harness connector.
L
6. Remove mounting bolt, and then remove high-pressure pipe 1 from the vehicle.
INSTALLATION
Note the following items, and then install in the reverse order of removal. M
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to HA-20, "Leak Test".
N
HIGH-PRESSURE PIPE 2
HIGH-PRESSURE PIPE 2 : Removal and Installation INFOID:0000000010452008

O
CAUTION:
Perform lubricant return operation before each refrigeration system disassembly. However, if a large
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to HA-
P
23, "Perform Lubricant Return Operation".
REMOVAL
1. Use a refrigerant collecting equipment (for HFO-1234yf) to discharge the refrigerant. Refer to HA-21,
"Recycle Refrigerant".
2. Remove front bumper fascia assembly. Refer to EXT-19, "Removal and Installation".
3. Remove mounting bolt, and then disconnect high-pressure pipe 2 from high-pressure flexible hose.

HA-35
COOLER PIPE AND HOSE
< REMOVAL AND INSTALLATION > [TYPE 1]
CAUTION:
Cap or wrap the joint of the A/C piping and expansion valve with suitable material such as vinyl
tape to avoid the entry of air.
4. Remove mounting bolt, and then disconnect high-pressure pipe 2 from condenser & liquid tank assembly.
CAUTION:
Cap or wrap the joint of the A/C piping and condenser with suitable material such as vinyl tape to
avoid the entry of air.
5. Remove high-pressure pipe 2 from the vehicle.
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to HA-20, "Leak Test".
REFRIGERANT PRESSURE SENSOR
REFRIGERANT PRESSURE SENSOR : Removal and Installation INFOID:0000000010451994

HA-36
CONDENSER
< REMOVAL AND INSTALLATION > [TYPE 1]
CONDENSER
A
Exploded View INFOID:0000000010451991

G
JMIIA3533ZZ

1. Condenser &liquid tank assembly 2. Radiator

H
: Pawl

CONDENSER
HA
CONDENSER : Removal and Installation INFOID:0000000010451992

CAUTION:
J
Perform lubricant return operation before each refrigeration system disassembly. However, if a large
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to HA-
23, "Perform Lubricant Return Operation".
K
REMOVAL
1. Use a refrigerant collecting equipment (for HFO-1234yf) to discharge the refrigerant. Refer to HA-21,
"Recycle Refrigerant". L
2. Remove front bumper fascia assembly. Refer to EXT-19, "Removal and Installation".
3. Remove mounting bolt, and then disconnect high-pressure pipe 1 from the condenser & liquid tank
assembly. M
CAUTION:
Cap or wrap the joint of the A/C piping and condenser with suitable material such as vinyl tape to
avoid the entry of air.
N
4. Remove mounting bolt, and then disconnect high-pressure pipe 2 from the condenser & liquid tank
assembly.
CAUTION: O
Cap or wrap the joint of the A/C piping and condenser with suitable material such as vinyl tape to
avoid the entry of air.
5. Disengage fixing pawls, and then remove the condenser & liquid tank assembly from the vehicle.
CAUTION: P
Never to damage core surface of condenser.
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.

HA-37
CONDENSER
< REMOVAL AND INSTALLATION > [TYPE 1]
• Perform lubricant adjusting procedure before installing new condenser. Refer to HA-24, "Lubricant
Adjusting Procedure for Compressor Replacement".
• Check for leakages when recharging refrigerant. Refer to HA-20, "Leak Test".

HA-38
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 1]
A/C UNIT ASSEMBLY
A
Exploded View INFOID:0000000010451995

REMOVAL B
RHD models
C

JMIIA3405GB K

1. A/C unit assembly 2. Drain hose 3. Cap

4. Instrument stay LH 5. Instrument stay RH 6. Steering member L
: N·m (kg-m, in-lb)

: N·m (kg-m, ft-lb)

HA-39
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 1]
LHD models

JMIIA3519GB

1. Cap 2. Steering member 3. Instrument stay LH

4. Instrument stay RH 5. A/C unit assembly 6. Drain hose
: N·m (kg-m, in-lb)

: N·m (kg-m, ft-lb)

DISASSEMBLY

HA-40
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 1]
A/C unit
A

HA
JMIIA3520GB

1. Heater & cooling unit case RH 2. Blower motor assembly 3. Filter cover RH
J
4. Sub harness 5. PTC heater 6. O-ring
7. Expansion valve 8. Main case center 9. Sub harness
10. Cooler packing 11. Heater pipe packing 12. Intake packing
K
13. Heater pipe clamp 14. Air conditioner filter 15. Evaporator assembly
16. Case packing 17. Heater & cooling unit case LH 18. Heater core
19. A/C auto amp.*1 20. Filter cover LH 21. Intake sensor
L
22. Intake box case lower 23. Heater pipe cover 24. Aspirator*1
25. Aspirator duct*1 26. Intake door 27. Power transistor*1
Fan control amplifier*2 M
28. Intake box case upper 29. Foot door 30. Plate case center
31. Air mix door RH 32. Air mix door LH 33. Center ventilator door·center ventila-
tor & defroster door rod N
34. Foot door & mode door rod 35. Side ventilator door 36. Main case rear
37. Mode door 38. Center ventilator & defroster door 39. Air guide case
40. Side ventilator packing LH 41. Center ventilator packing 42. Side ventilator packing RH O
43. Defroster packing
: Always replace after every disassembly.
P
: N·m (kg-m, in-lb)

• *1: Automatic air conditioning

• *2: Manual air conditioning

HA-41
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 1]
Heater unit

JMIIA3522ZZ

1. Heater & cooling unit case RH 2. Blower motor assembly 3. Filter cover RH
4. Sub harness 5. PTC heater 6. Main case center
7. Sub harness 8. Cooler packing 9. Heater pipe packing
10. Intake packing 11. Heater pipe clamp 12. Air conditioner filter
13. Evaporator assembly 14. Case packing 15. Heater & cooling unit case LH
16. Heater core 17. Filter cover LH 18. Intake sensor
19. Intake box case lower 20. Heater pipe cover 21. Intake door
22. Power transistor 23. Intake box case upper 24. Foot door
25. Plate case center 26. Air mix door RH 27. Air mix door LH
28. Center ventilator door·center venti- 29. Foot door & mode door rod 30. Side ventilator door
lator & defroster door rod
31. Main case rear 32. Mode door 33. Center ventilator & defroster door
34. Air guide case 35. Side ventilator packing LH 36. Center ventilator packing
37. Side ventilator packing RH 38. Defroster packing

A/C UNIT ASSEMBLY

A/C UNIT ASSEMBLY : Removal and Installation INFOID:0000000010451996

HA-42
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 1]
2. Drain engine coolant from cooling system. Refer to CO-11, "Draining".
3. Remove front wiper drive assembly. Refer to WW-78, "WIPER DRIVE ASSEMBLY : Removal and Installa- A
tion".
4. Remove fixing clip, and then remove insulator upper side.
5. Remove mounting bolt, and then disconnect internal heat exchanger pipe from expansion valve. Refer to B
HA-34, "INTERNAL HEAT EXCHANGER PIPE : Removal and Installation". (If equipped)
CAUTION:
Cap or wrap the joint of the A/C piping and expansion valve with suitable material such as vinyl C
tape to avoid the entry of air.
6. Remove air duct. Refer to EM-23, "Removal and Installation".
7. Remove clamps, and then disconnect heater hoses from A/C unit assembly. D
CAUTION:
• Some coolant may spill when heater hoses are disconnected.
• Close off the coolant inlet and outlet on the heater core (2 locations) with shop cloths.
E
8. Remove instrument panel assembly. Refer to IP-13, "Removal and Installation".
9. Remove rear floor duct 1. Refer to VTL-15, "REAR FLOOR DUCT 1 : Removal and Installation".
10. Remove mounting nuts (A), and then remove instrument stay LH and RH. F

JMIIA3353ZZ
HA
11. Disconnect drain hose from A/C unit assembly.

L
JMIIA3407ZZ

12. Remove ground bolts.

M
13. Remove the BCM mounting screws.
14. Remove the J/B mounting screws.
15. Disconnect the harness connectors and clips required to remove the steering member, and then move the N
vehicle harness to the position without hindrance for work.
16. Remove mounting nuts, and then move steering column assembly to a position where it dose not inhibit
work. Refer to ST-10, "Removal and Installation".
O
17. Remove caps from steering member mounting bolts.

HA-43
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 1]
18. Remove steering member mounting bolts (A) and A/C unit mounting bolts (B), and then remove steering
member from the vehicle.

JMIIA3362ZZ

CAUTION:
When removing steering member, 2 workers are required to prevent it from dropping.
19. Remove A/C unit assembly.
CAUTION:
When removing A/C unit assembly, 2 workers are required to prevent it from dropping.
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to HA-20, "Leak Test".
NOTE:
• When installing drain hose (1), match the riv porsion (B) of A/C unit
(2) and mark (A) of drain hose.

JMIIA3408ZZ

• Refer to CO-11, "Refilling" when filling radiator with engine coolant.

EVAPORATOR

HA-44
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 1]
EVAPORATOR : Removal and Installation INFOID:0000000010451997

A
REMOVAL
1. Remove A/C unit assembly. Refer to HA-42, "A/C UNIT ASSEMBLY : Removal and Installation".
B
2. Remove fixing screws (A) and disengage fixing pawls.

: Pawl
C
3. Remove main case rear.

E
JMIIA3382ZZ

4. Remove fixing screws (A), and then remove intake box assem-
F
bly.

JMIIA3383ZZ
HA
5. Remove fixing screws (A) and disengage fixing pawls, and then
separate heater & cooling unit case assembly.
J
: Pawl

JMIIA3384ZZ

6. Remove evaporator assembly from heater & cooling unit case. M

7. Remove mounting bolts, and then remove expansion valve from evaporator.
INSTALLATION N
Note the following items, and then install in the reverse order of removal.
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Perform lubricant adjusting procedure after installing new evaporator. Refer to HA-23, "Lubricant O
Adjusting Procedure for Components Replacement Except Compressor".
HEATER CORE
P
HEATER CORE : Removal and Installation INFOID:0000000010451998

REMOVAL
1. Remove A/C unit assembly. Refer to HA-42, "A/C UNIT ASSEMBLY : Removal and Installation".
2. Remove foot duct LH. Refer to VTL-15, "FOOT DUCT : Removal and Installation".

HA-45
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 1]
3. Remove fixing screws (A), and then remove heater pipe cover.

JMIIA3386ZZ

4. Remove heater pipe packing.

5. Disengage fixing pawl, and then remove heater pipe clamp.

: Pawl

JMIIA3387ZZ

6. Remove heater core from A/C unit assembly.

JMIIA3388ZZ

INSTALLATION
Note the following item, and then install in the reverse order of removal.
NOTE:
Refer to CO-11, "Refilling" when filling radiator with engine coolant.
EXPANSION VALVE
EXPANSION VALVE : Removal and Installation INFOID:0000000010451999

HA-46
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 1]
CAUTION:
Cap or wrap the joint of the evaporator and expansion valve with suitable material such as vinyl A
tape to avoid the entry of air.
INSTALLATION
Note the following items, and then install in the reverse order of removal. B
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to HA-20, "Leak Test". C

HA-47
SERVICE DATA AND SPECIFICATIONS (SDS)
< SERVICE DATA AND SPECIFICATIONS (SDS) [TYPE 1]

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)
Compressor INFOID:0000000010452002

Denso make
Model
6SBH14
Type Swash plate
Displacement
Maximum 140 (8.6)
cm3 (cu in)/rev
Direction of rotation Clockwise (viewed from clutch)
Drive belt Poly V
Disc to pulley clearance
Standard 0.21 – 0.55 (0.008 – 0.022)
mm (in)

Lubricant INFOID:0000000010452003

Name ND-OIL12
Total in system 110 (3.9)
Capacity
m (Imp fl oz) Compressor (service part) charging
110 (3.9)
amount

Refrigerant INFOID:0000000010452004

Type HFO-1234yf (R-1234yf)

Capacity
0.5 (1.1)
kg (lb)

Engine Idling Speed INFOID:0000000010452005

Refer to ECH-316, "Idle Speed".

Belt Tension INFOID:0000000010452006

Refer to EM-114, "Drive Belts".

HA-48
APPLICATION NOTICE
< HOW TO USE THIS MANUAL > [TYPE 2]

HOW TO USE THIS MANUAL A

APPLICATION NOTICE
Information INFOID:0000000010709188
B
Check the vehicle type to use the service information in this section.

Service information Destination C

Type 1 For Europe HRA2DDT engine models
• K9K engine models
Type 2 For Europe D
• R9M engine models
• HRA2DDT engine models
Type 3 Except for Europe
• MR20DD engine models
E
• K9K engine models
Type 4 Except for Europe
• R9M engine models

HA-49
PRECAUTIONS
< PRECAUTION > [TYPE 2]

PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER" INFOID:0000000010501578

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 AIR BAG” and
“SEAT BELT” of this Service Manual.
WARNING:
Always observe the following items for preventing accidental activation.
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see “SRS AIR BAG”.
• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-
vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
Always observe the following items for preventing accidental activation.
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the
ignition ON or engine running, never use air or electric power tools or strike near the sensor(s) with
a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the
battery, and wait at least 3 minutes before performing any service.
Precautions Necessary for Steering Wheel Rotation After Battery Disconnection
INFOID:0000000010501579

CAUTION:
Comply with the following cautions to prevent any error and malfunction.
• Before removing and installing any control units, first turn the ignition switch to the LOCK position,
then disconnect both battery cables.
• After finishing work, confirm that all control unit connectors are connected properly, then re-connect
both battery cables.
• Always use CONSULT to perform self-diagnosis as a part of each function inspection after finishing
work. If a DTC is detected, perform trouble diagnosis according to self-diagnosis results.
For vehicle with steering lock unit, if the battery is disconnected or discharged, the steering wheel will lock and
cannot be turned.
If turning the steering wheel is required with the battery disconnected or discharged, follow the operation pro-
cedure below before starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Turn the ignition switch to ACC position.
(At this time, the steering lock will be released.)
3. Disconnect both battery cables. The steering lock will remain released with both battery cables discon-
nected and the steering wheel can be turned.
4. Perform the necessary repair operation.

HA-50
PRECAUTIONS
< PRECAUTION > [TYPE 2]
5. When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn
the ignition switch from ACC position to ON position, then to LOCK position. (The steering wheel will lock A
when the ignition switch is turned to LOCK position.)
6. Perform self-diagnosis check of all control units using CONSULT.
Precaution for Procedure without Cowl Top Cover INFOID:0000000010501580
B

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

PIIB3706J

F
Precautions for Removing Battery Terminal INFOID:0000000010503297

• With the adoption of Auto ACC function, ACC power is automatically supplied by operating the intelligent key
or remote keyless entry or by opening/closing the driver side door. In addition, ACC power is supplied even G
after the ignition switch is turned to the OFF position, i.e. ACC power is supplied for a certain fixed time.
• When disconnecting the 12V battery terminal, turn off the ACC
power before disconnecting the 12V battery terminal, observing H
“How to disconnect 12V battery terminal” described below.
NOTE:
Some ECUs operate for a certain fixed time even after ignition
switch is turned OFF and ignition power supply is stopped. If the HA
battery terminal is disconnected before ECU stops, accidental DTC
detection or ECU data damage may occur.
• For vehicles with the 2-batteries, be sure to connect the main bat- J
tery and the sub battery before turning ON the ignition switch.
NOTE:
SEF289H
If the ignition switch is turned ON with any one of the terminals of
main battery and sub battery disconnected, then DTC may be detected. K
• After installing the 12V battery, always check "Self Diagnosis Result" of all ECUs and erase DTC.
NOTE:
The removal of 12V battery may cause a DTC detection error. L
HOW TO DISCONNECT 12V BATTERY TERMINAL
Disconnect 12V battery terminal according to Instruction 1 or Instruction 2 described below.
For vehicles parked by ignition switch OFF, refer to Instruction 2. M
INSTRUCTION 1
1. Open the hood.
N
2. Turn key switch to the OFF position with the driver side door opened.
3. Get out of the vehicle and close the driver side door.
4. Wait at least 3 minutes. For vehicle with the engine listed below, remove the battery terminal after a lapse O
of the specified time.

D4D engine : 20 minutes

P
HRA2DDT : 12 minutes
K9K engine : 4 minutes
M9R engine : 4 minutes
R9M engine : 4 minutes
V9X engine : 4 minutes
CAUTION:

HA-51
PRECAUTIONS
< PRECAUTION > [TYPE 2]
While waiting, never operate the vehicle such as locking, opening, and closing doors. Violation of
this caution results in the activation of ACC power supply according to the Auto ACC function.
5. Remove 12V battery terminal.
CAUTION:
After installing 12V battery, always check self-diagnosis results of all ECUs and erase DTC.
INSTRUCTION 2 (FOR VEHICLES PARKED BY IGNITION SWITCH OFF)
1. Unlock the door with intelligent key or remote keyless entry.
NOTE:
At this moment, ACC power is supplied.
2. Open the driver side door.
3. Open the hood.
4. Close the driver side door.
5. Wait at least 3 minutes.
CAUTION:
While waiting, never operate the vehicle such as locking, opening, and closing doors. Violation of
this caution results in the activation of ACC power supply according to the Auto ACC function.
6. Remove 12V battery terminal.
CAUTION:
After installing 12V battery, always check self-diagnosis results of all ECUs and erase DTC.
Precautions For Refrigerant System Service INFOID:0000000010501582

GENERAL REFRIGERANT PRECAUTION

WARNING:
• Never breathe A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose and
throat. Remove HFO-1234yf (R-1234yf) from the A/C system, using certified service equipment meet-
ing requirements of SAE J-2843 [HFO-1234yf (R-1234yf) Recovery/Recycling/Recharging Equipment
for Flammable Refrigerants for Mobile Air Conditioning Systems]. Ventilate work area before resum-
ing service if accidental system discharge occurs. Additional health and safety information may be
obtained from refrigerant and lubricant manufacturers.
• Never release refrigerant into the air. Use approved recovery/recycling recharging equipment to cap-
ture the refrigerant each time an air conditioning system is discharged.
• Wear always eye and hand protection (goggles and gloves) when working with any refrigerant or air
conditioning system.
• Never store or heat refrigerant containers above 52°C (126°F).
• Never heat a refrigerant container with an open flame; Place the bottom of the container in a warm
pail of water if container warming is required.
• Never intentionally drop, puncture, or incinerate refrigerant containers.
• Keep refrigerant away from open flames: poisonous gas is produced if refrigerant burns.
• Refrigerant displaces oxygen, therefore be certain to work in well ventilated areas to prevent suffo-
cation.
• Never pressure test or leakage test HFO-1234yf (R-1234yf) service equipment and/or vehicle air con-
ditioning systems with compressed air during repair. Some mixtures of air and HFO-1234yf (R-
1234yf) have been shown to be combustible at elevated pressures. These mixtures, if ignited, may
cause injury or property damage. Additional health and safety information may be obtained from
refrigerant manufacturers.
WORKING WITH HFO-1234yf (R-1234yf)
CAUTION:
• CFC-12 (R-12) or HFC-134a (R-134a) refrigerant and HFO-1234yf (R-1234yf) refrigerant are not com-
patible. Compressor malfunction is likely to occur if the refrigerants are mixed, refer to “CONTAMI-
NATED REFRIGERANT” below. To determine the purity of HFO-1234yf (R-1234yf) in the vehicle and
recovery tank, use Refrigerant recovery/recycling recharging equipment and Refrigerant Identifier.
• Use only specified lubricant for the HFO-1234yf (R-1234yf) A/C system and HFO-1234yf (R-1234yf)
components. Compressor malfunction is likely to occur if lubricant other than that specified is used.
• The specified HFO-1234yf (R-1234yf) lubricant rapidly absorbs moisture from the atmosphere. The
following handling precautions must be observed:
- Cap (seal) immediately the component to minimize the entry of moisture from the atmosphere when
removing refrigerant components from a vehicle.

HA-52
PRECAUTIONS
< PRECAUTION > [TYPE 2]
- Never remove the caps (unseal) until just before connecting the components when installing refrig-
erant components to a vehicle. Connect all refrigerant loop components as quickly as possible to A
minimize the entry of moisture into system.
- Use only the specified lubricant from a sealed container. Reseal immediately containers of lubricant.
Lubricant becomes moisture saturated and should not be used without proper sealing.
B
- Never allow lubricant (ND-OIL 12) to come in contact with styrene foam parts. Damage may result.
CONTAMINATED REFRIGERANT
Take appropriate steps shown below if a refrigerant other than pure HFO-1234yf (R-1234yf) is identi- C
fied in a vehicle:
• Explain to the customer that environmental regulations prohibit the release of contaminated refrigerant into
the atmosphere.
• Explain that recovery of the contaminated refrigerant could damage service equipment and refrigerant sup- D
ply.
• Suggest the customer return the vehicle to the location of previous service where the contamination may
have occurred. E
• In case of repairing, recover the refrigerant using only dedicated equipment and containers. Never
recover contaminated refrigerant into the existing service equipment. Contact a local refrigerant prod-
uct retailer for available service if the facility does not have dedicated recovery equipment. This refrigerant
must be disposed of in accordance with all federal and local regulations. In addition, replacement of all F
refrigerant system components on the vehicle is recommended.
• The air conditioner warranty is void if the vehicle is within the warranty period. Please contact Nissan Cus-
tomer Affairs for further assistance. G
REFRIGERANT CONNECTION
A new type refrigerant connection has been introduced to all refrigerant lines except the following location.
• Expansion valve to evaporator H
• Refrigerant pressure sensor to high-pressure pipe 1
WARNING:
Check that all refrigerant is discharged into the recycling equipment and the pressure in the system is HA
less than atmospheric pressure. Then gradually loosen the discharge side hose fitting and remove it.
CAUTION:
Observe the following when replacing or cleaning refrigerant cycle components.
J
• Store it in the same way at it is when mounted on the car when the compressor is removed. Failure
to do so will cause lubricant to enter the low-pressure chamber.
• Use always a torque wrench and a back-up wrench when connecting tubes.
• Plug immediately all openings to prevent entry of dust and moisture after disconnecting tubes. K
• Connect the pipes at the final stage of the operation when installing an air conditioner in the vehicle.
Never remove the seal caps of pipes and other components until just before required for connection.
• Allow components stored in cool areas to warm to working area temperature before removing seal L
caps. This prevents condensation from forming inside A/C components.
• Remove thoroughly moisture from the refrigeration system before charging the refrigerant.
• Replace always used O-rings.
• Apply lubricant to circle of the O-rings shown in illustration when connecting tube. Be careful not to M
apply lubricant to threaded portion.

Name : ND-OIL12 N
• O-ring must be closely attached to the groove portion of tube.
• Never damage O-ring and tube when replacing the O-ring.
• Connect tube until a click can be heard. Then tighten the nut or bolt by hand. Check that the O-ring is O
installed to tube correctly.

HA-53
PRECAUTIONS
< PRECAUTION > [TYPE 2]
• Perform leakage test and make sure that there is no leakage from connections after connecting line.
Disconnect that line and replace the O-ring when the refrigerant leaking point is found. Then tighten
connections of seal seat to the specified torque.

RHA861F

RECOVERY/RECYCLING RECHARGING 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.
ELECTRICAL LEAK DETECTOR
Be certain to follow the manufacturer’s instructions for tester operation and tester maintenance.
VACUUM PUMP

HA-54
PRECAUTIONS
< PRECAUTION > [TYPE 2]
The lubricant contained inside the vacuum pump is not compatible
with the specified lubricant for HFO-1234yf (R-1234yf) A/C systems. A
The vent side of the vacuum pump is exposed to atmospheric pres-
sure. So the vacuum pump lubricant may migrate out of the pump
into the service hose. This is possible when the pump is switched
B
OFF after evacuation (vacuuming) and hose is connected to it.
To prevent this migration, use a manual valve placed near the hose-
to-pump connection, as per the following.
• Vacuum pumps usually have a manual isolator valve as part of the C
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 D
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. E
Some one-way valves open when vacuum is applied and close
under no vacuum condition. Such valves may restrict the pump’s
ability to pull a deep vacuum and are not recommended. F

G
RHA270DA

MANIFOLD GAUGE SET

Be certain that the gauge face indicates HFO-1234yf or R-1234yf. Be sure the gauge set has 1/2″-16 ACME H
threaded connections for service hoses. Confirm the set has been used only with refrigerant HFO-1234yf (R-
1234yf) and specified lubricants.
SERVICE HOSES HA
Be certain that the service hoses display the markings described. 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 J
Never attempt to connect HFO-1234yf (R-1234yf) service couplers
to the CFC-12 (R-12) and HFC-134a (R-134a) A/C system. The
HFO-1234yf (R-1234yf) couplers do not properly connect to the K
CFC-12 (R-12) and HFC-134a (R-134a) system. However, if an
improper connection is attempted, discharging and contamination
may occur. L

Shut-off valve rotation A/C service valve

Clockwise Open M
Counterclockwise Close RHA273D

REFRIGERANT WEIGHT SCALE N

Verify that no refrigerant other than HFO-1234yf (R-1234yf) 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 O
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. P

HA-55
PREPARATION
< PREPARATION > [TYPE 2]

PREPARATION
PREPARATION
Commercial Service Tools INFOID:0000000010501574

HFO-1234yf (R-1234yf) Service Tool and Equipment

Tool name Description

Function:
Recovery/recycling/recharg- • Refrigerant recovery, recycling and re-
ing equipment charging
• Compliant with HFO-1234yf (R-1234yf)

RJIA0195E

Power supply:
Electrical leak detector
DC 12 V (Cigarette lighter)

SHA705EB

Identification:
• The gauge face indicates HFO-1234yf
Manifold gauge set (with hos- (R-1234yf).
es and couplers) Fitting size: Thread size
• 1/2″-16 ACME

RJIA0196E

HA-56
PREPARATION
< PREPARATION > [TYPE 2]
Tool name Description
A

Service hoses Hose fitting to gauge:

• High-pressure side hose B
• Low-pressure side hose • 1/2″-16 ACME
• Utility hose Compliant with HFO-1234yf (R-1234yf)

C
S-NT201

D
Hose fitting to service hose:
Service couplers
M14 x 1.5 fitting is optional or permanently
• High-pressure side coupler
attached.
• Low-pressure side coupler
Compliant with HFO-1234yf (R-1234yf) E

S-NT202

F
For measuring of refrigerant
Fitting size: Thread size
Refrigerant weight scale
1/2″-16 ACME G
Compliant with HFO-1234yf (R-1234yf)

S-NT200
H
Capacity:
• Air displacement: 4 CFM
• Micron rating: 20 microns HA
Vacuum pump • Oil capacity: 482 g (17 oz.)
(Including the isolator valve) Fitting size: Thread size
• 1/2″-16 ACME
J
Compliant with HFO-1234yf (R-1234yf)
S-NT203

Sealant or/and Lubricant INFOID:0000000010501575

HFO-1234yf (R-1234yf) Service Tool and Equipment

• Never mix HFO-1234yf (R-1234yf) refrigerant and/or its specified lubricant with CFC-12 (R-12) and HFC- L
134a (R-134a) 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 which handles M
refrigerant and/or lubricant) are different between CFC-12 (R-12), HFC-134a (R-134a) and HFO-1234yf (R-
1234yf). 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 N
compressor malfunction may result.

HA-57
PREPARATION
< PREPARATION > [TYPE 2]

Tool name Description

Container color: Light blue

Container marking: HFO-1234yf (R-
HFO-1234yf (R-1234yf) refrigerant 1234yf)
Fitting size: Thread size
• Large container 1/2″-16 ACME

S-NT196

Type: Polyalkylene glycol oil (PAG)

Application:
ND-OIL12 HFO-1234yf (R-1234yf) swash plate
compressors
Capacity: 40 m (1.4 Imp fl oz.)

JMIIA1759ZZ

HA-58
COMPONENT PARTS
< SYSTEM DESCRIPTION > [TYPE 2]

SYSTEM DESCRIPTION A
COMPONENT PARTS
Component Parts Location INFOID:0000000010501549
B

JMIIA3523ZZ J

1. Refrigerant pressure sensor 2. Compressor 3. Condenser

4. Liquid tank 5. Expansion valve 6. Evaporator K
A. Built-in A/C unit assembly

Component Description INFOID:0000000010501550

Component Description
The mist form liquid refrigerant transforms to gas by evaporation by the air conveyed from blower
M
Evaporator
motor. The air is cooled by the heat by evaporation.
Condenser Cools refrigerant discharged from compressor, and transforms it to liquid refrigerant.
N
Compressor Intakes, compresses, and discharges refrigerant, to circulate refrigerant inside the refrigerant cycle.
Refer to HAC-19, "Refrigerant Pressure Sensor" (AUTOMATIC AIR CONDITIONING SYSTEM) or
Refrigerant pressure sensor
HAC-148, "Refrigerant Pressure Sensor" (MANUAL AIR CINDITIONING SYSTEM).
O
Liquid tank Eliminates foreign matter in refrigerant, and stores temporarily liquid refrigerant.
Transforms high-pressure liquid refrigerant to mist form low-pressure liquid refrigerant by drawing
Expansion valve
function.
P

HA-59
SYSTEM
< SYSTEM DESCRIPTION > [TYPE 2]
SYSTEM
System Diagram INFOID:0000000010501551

JMIIA3115GB

System Description INFOID:0000000010501552

REFRIGERANT CYCLE
Refrigerant Flow
The refrigerant from the compressor, flows the condenser with liquid tank, the evaporator, and returns to the
compressor. The refrigerant evaporation in the evaporator is controlled by an expansion valve.
Freeze Protection
When intake sensor detects that evaporator surface temperature is 2°C (36°F) or less, A/C auto amp. (Auto-
matic air conditioning) or A/C amp. (Manual air conditioning) requests ECM to turn the compressor OFF, and
ECM makes A/C relay to OFF, and stops the compressor.
REFRIGERANT SYSTEM PROTECTION
Refrigerant Pressure Sensor
• The refrigerant system is protected against excessively high- or low-pressures by the refrigerant pressure
sensor, installed at the high-pressure pipe 1. The refrigerant pressure sensor detects the pressure inside the
refrigerant line and sends the voltage signal to the ECM if the system pressure rises above, or falls below
the specifications.
• ECM turns the A/C relay to OFF and stops the compressor when the high-pressure side detected by refriger-
ant pressure sensor is following conditions;
- Approximately 3,120 kPa (31.2 bar, 31.8 kg/cm2, 452 psi) or more (Engine speed is less than 1,500 rpm.)
- Approximately 2,740 kPa (27.4 bar, 27.9 kg/cm2, 397 psi) or more (Engine speed is 1,500 rpm or more.)
- Approximately 140 kPa (1.4 bar, 1.4 kg/cm2, 20 psi) or less
Pressure Relief Valve
The refrigerant system is also protected by a pressure relief valve, located in the rear head of the compressor.
The release port on the pressure relief valve automatically opens and releases refrigerant into the atmosphere
when the pressure of refrigerant in the system increases to an unusual level [more than 3,800 kPa (38 bar,
38.8 kg/cm2, 551 psi)].

HA-60
DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION > [TYPE 2]

BASIC INSPECTION A
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow INFOID:0000000010501553
B

OVERALL SEQUENCE
C

P
NNIIA0143GB

DETAILED FLOW
1.INTERVIEW FOR MALFUNCTION
Interview the symptom to the customer.

HA-61
DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION > [TYPE 2]
>> GO TO 2.
2.SYMPTOM CHECK
Check the symptom from the customer's information. Check that any symptom occurs other than the inter-
viewed symptom.

Insufficient cooling/heating>>GO TO 3.
Refrigerant leakage>>GO TO 6.
Noise >> GO TO 7.
3.CONTROL SYSTEM DIAGNOSIS
Perform the system diagnosis for the A/C control system. Refer to HAC-68, "Work Flow" (AUTOMATIC AIR
CONDITIONING SYSTEM) or HAC-182, "Work Flow" (MANUAL AIR CONDITIONING SYSTEM), HAC-261,
"Work Flow" (MANUAL HEATER).
Is A/C control system normal?
YES >> GO TO 4.
NO >> GO TO 8.
4.PERFORMANCE TEST
Perform the performance test. Check the operation of each part. Refer to HA-69, "Inspection".

>> GO TO 5.
5.TROUBLE DIAGNOSIS FOR UNUSUAL PRESSURE
Diagnose using a manifold gauge whenever system's high and/or low side pressure(s) is/are unusual. Specify
the malfunctioning part. Refer to HA-71, "Symptom Table".

Low refrigerant charge>>GO TO 6.

Except above>>GO TO 8.
6.CHECK REFRIGERANT FOR LEAKAGES
Check refrigerant for leakages. Specify the malfunctioning part. Refer to HA-63, "Leak Test".

>> GO TO 8.
7.TROUBLE DIAGNOSIS FOR NOISE
Perform trouble diagnosis for noise. Specify the malfunctioning part. Refer to HA-73, "Symptom Table".

>> GO TO 8.
8.MALFUNCTION PART REPAIR
Repair or replace the malfunctioning part.

>> GO TO 9.
9.REPAIR CHECK (OPERATION CHECK)
Check the operation of each part.
Does it operate normally?
YES >> INSPECTION END
NO >> GO TO 2.

HA-62
REFRIGERANT
< BASIC INSPECTION > [TYPE 2]
REFRIGERANT
A
Description INFOID:0000000010501554

CONNECTION OF SERVICE TOOLS AND EQUIPMENT B

JSIIA0258ZZ

H
1. Shut-off valve 2. A/C service valve 3. Recovery/recycling recharging
equipment
4. Vacuum pump 5. Manifold gauge set 6. Refrigerant container (HFO-1234yf)
7. Weight scale
HA
A. Preferred (best) method B. Alternative method C. For charging

Leak Test INFOID:0000000010501555 J

CHECK REFRIGERANT LEAKAGE USING ELECTRICAL LEAK DETECTOR

WARNING: K
Never check refrigerant leakage while the engine is running.
CAUTION:
Be careful of the following items so that inaccurate checks or misidentifications are avoided. L
• Never allow refrigerant vapor, shop chemical vapors, cigarette smoke, or others around the vehicle.
• Always check refrigerant leakage in a low air flow environment so that refrigerant may not disperse
when leakage occurs.
M
1. Stop the engine.
2. Connect recovery/recycling/recharging equipment or manifold gauge set to A/C service valve.
3. Check that A/C refrigerant pressure is 345 kPa (3.45 bar, 3.52 kg/cm2, 50 psi) or more when temperature N
is 16°C (61°F) or more. When pressure is lower than the specified value, recycle refrigerant completely
and fill refrigerant to the specified level.
NOTE:
O
Leakages may not be detected if A/C refrigerant pressure is 345 kPa (3.45 bar, 3.52 kg/cm2, 50 psi) or
less when temperature is less than 16°C (61°F).
4. Clean area where refrigerant leakage check is performed, and check refrigerant leakage along all sur-
P
faces of pipe connections and A/C system components using electrical leak detector probe.
CAUTION:
• Continue checking when a leakage is found. Always continue and complete checking along all
pipe connections and A/C system components for additional leakage.
• When a leakage is detected, clean leakage area using compressed air and check again.
• When checking leakage of cooling unit inside, always clean inside of drain hose so that the
probe surface may not be exposed to water or dirt.
NOTE:

HA-63
REFRIGERANT
< BASIC INSPECTION > [TYPE 2]
• Always check leakage starting from high-pressure side and continue to low-pressure side.
• When checking leakage of cooling unit inside, operate blower fan motor for 15 minutes or more at the
maximum fan speed while the engine is stopped, and then insert electrical leak detector probe into drain
hose and hold for 10 minutes or more.
• When disconnecting shut-off valve that is connected to A/C service valve, always evacuate remaining
refrigerant so that misidentification can be avoided.
5. Repair or replace parts where refrigerant leakage is detected. (Leakage is detected but leakage area is
unknown. GO TO 6.)
6. Start the engine and set A/C control in the following conditions.
• A/C switch ON
• Air flow: VENT (ventilation)
• Intake door position: Recirculation
• Temperature setting: Full cold
• Fan speed: Maximum speed set
7. Run the engine at approximately 1,500 rpm for 2 minutes or more.
8. Stop the engine. Check again for refrigerant leakage. GO TO 4.
WARNING:
Never get burned when the engine is hot.
NOTE:
• Start refrigerant leakage check immediately after the engine is
stopped.
• When refrigerant circulation is stopped, pressure on the low-
pressure side rises gradually, and after this, pressure on the
high-pressure side falls gradually.
• The higher the pressure is, the easier it is to find the refriger-
ant leakage.

SHA839E

Recycle Refrigerant INFOID:0000000010501556

WARNING:
• Always use HFO-1234yf for A/C refrigerant. If CFC-12 or HFC-134a is accidentally charged, compres-
sor is damaged due to insufficient lubrication.
• Always observe and follow precautions described on refrigerant container. Incorrect handling may
result in an explosion of refrigerant container, frostbite, or the loss of eyesight.
• Never breathe A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose, or
throat.
• Never allow HFO-1234yf to be exposed to an open flame or others because it generates poisonous
gas when in contact with high temperature objects. Keep workshop well ventilated.
1. Perform lubricant return operation. Refer to HA-66, "Perform Lubricant Return Operation". (If refrigerant or
lubricant leakage is detected in a large amount, omit this step, and then GO TO 2.)
CAUTION:
Never perform lubricant return operation if a large amount of refrigerant or lubricant leakage is
detected.
2. Check gauge pressure readings of recovery/recycling/recharging equipment. When remaining pressure
exists, recycle refrigerant from high-pressure hose and low-pressure hose.
NOTE:
Follow manufacturer instructions for the handling or maintenance of the equipment. Never fill the equip-
ment with non-specified refrigerant.
3. Remove A/C service valve cap from the vehicle.
4. Connect recovery/recycling/recharging equipment to A/C service valve.
5. Operate recovery/recycling/recharging equipment, and recycle refrigerant from the vehicle.
6. Evacuate air for 10 minutes or more to remove any remaining refrigerant integrated to compressor lubri-
cant, etc.
7. Refrigerant recycle operation is complete.

HA-64
REFRIGERANT
< BASIC INSPECTION > [TYPE 2]
Charge Refrigerant INFOID:0000000010501557

A
WARNING:
• Always use HFO-1234yf for A/C refrigerant. If CFC-12 or HFC-134a is accidentally charged, compres-
sor is damaged due to insufficient lubrication. B
• Always observe and follow precautions described on refrigerant container. Incorrect handling may
result in an explosion of refrigerant container, frostbite, or the loss of eyesight.
• Never breathe A/C refrigerant and lubricant vapor or mist. Exposure my irritate eyes, nose, or throat.
• Never allow HFO-1234yf to be exposed to an open flame or others because it generates poisonous C
gas when in contact with high temperature objects. Keep workshop well ventilated.
1. Connect recovery/recycling/recharging equipment to the A/C service valve.
D
2. Operate recovery/recycling/recharging equipment, and evacuate air from A/C system for 25 minutes or
more.
CAUTION:
Evacuate air for 15 minutes or more if the parts are replaced. E
3. Check the airtightness of A/C system for 25 minutes or more. If pressure rises more than the specified
level, charge A/C system with approximately 200 g (0.4 lb) refrigerant and check that there is no refriger-
ant leakage. Refer to HA-63, "Leak Test". F
CAUTION:
Check the airtightness for 15 minutes or more if the parts are replaced.
4. If parts other than compressor are replaced, fill compressor lubricant according to parts that are replaced. G
5. Charge the specified amount of refrigerant to A/C system.
6. Check that A/C system operates normally.
7. Disconnect recovery/recycling/recharging equipment. (Collect the refrigerant from the high-pressure hose H
and low-pressure hose of recovery/recycling/recharging equipment.)
8. Install A/C service valve cap.
9. Refrigerant charge is complete. HA

HA-65
LUBRICANT
< BASIC INSPECTION > [TYPE 2]
LUBRICANT
Description INFOID:0000000010501558

MAINTENANCE OF LUBRICANT LEVEL

The compressor lubricant is circulating in the system together with the refrigerant. It is necessary to fill com-
pressor with lubricant when replacing A/C system parts or when a large amount of refrigerant leakage is
detected. It is important to always maintain lubricant level within the specified level. Otherwise, the following
conditions may occur.
• Insufficient lubricant amount: Stuck compressor
• Excessive lubricant amount: Insufficient cooling (caused by insufficient heat exchange)

Name : ND-OIL12

Inspection INFOID:0000000010501559

If a compressor is malfunctioning (internal noise, insufficient cooling), check the compressor oil.
1.COMPRESSOR OIL JUDGMENT
1. Remove the compressor. Refer to HA-74, "Removal and Installation".
2. Sample a compressor oil and judge on the figure.

JSIIA0927GB

Judgement result 1>>Replace compressor only.

Judgement result 2>>Replace compressor and condenser & liquid tank assembly.
Perform Lubricant Return Operation INFOID:0000000010501560

CAUTION:
If a large amount of refrigerant or lubricant leakage is detected, never perform lubricant return opera-
tion.
1. Start the engine and set to the following conditions.
• Engine speed: Idling to 1,200 rpm
• A/C switch: ON
• Fan speed: Maximum speed set
• Intake door position: Recirculation
• Temperature setting: Full cold
2. Perform lubricant return operation for approximately 10 minutes.
3. Stop the engine.
4. Lubricant return operation is complete.
Lubricant Adjusting Procedure for Components Replacement Except Compressor
INFOID:0000000010501561

Fill with lubricant for the amount that is calculated according to the following conditions.
Example: Lubricant amount to be added when replacing evaporator and condenser&liquid tank assembly [m
(Imp fl oz.)] = 35 (1.2) + 20 (0.7) + α

HA-66
LUBRICANT
< BASIC INSPECTION > [TYPE 2]

Lubricant amount to be added to A/C system A

Conditions
m (Imp fl oz.)
Replace evaporator 35 (1.2)
Replace condenser & liquid tank assembly 20 (0.7) B
Large amount leakage 30 (1.1)
Refrigerant leakage is detected
Small amount leakage —
C
Lubricant amount that is recycled together with refrigerant during recycle operation α

Lubricant Adjusting Procedure for Compressor Replacement INFOID:0000000010501562

D
1. Drain lubricant from removed compressor and measure lubricant amount.
• Remove drain bolt (A), and then drain lubricant from drain
port. E
• Measure total amount of lubricant that is drained from
removed compressor.
F

JMIIA3527ZZ
H
2. Drain lubricant from a new compressor that is calculated accord-
ing to the following conditions.
HA
Amount to be drained (A) [m (Imp fl oz.)] = F − (D
+ S + R + α)
F : Lubricant amount that a new compressor J
contains [110 (3.9)]
D : Lubricant amount that is drained from re-
moved compressor K
S : Lubricant amount that remains inside of re- JPIIA1455GB

moved compressor [20 (0.7)]

R : Lubricant amount to be added according to L
components that are removed except com-
pressor
α : Lubricant amount that is recycled together M
with refrigerant during recycle operation
CAUTION:
N
If lubricant amount that is drained from removed compressor is less than 60 m (2.1 Imp fl oz.),
perform calculation by setting “D” as 40 m (1.4 Imp fl oz.).

O
Lubricant amount to be added to A/C system
Conditions
m (Imp fl oz.)
Replace evaporator 35 (1.2)
P
Replace condenser & liquid tank assembly 20 (0.7)
Example: Lubricant amount to be drained from a new compressor when replacing compressor and con-
denser & liquid tank assembly [m (Imp fl oz.)] [D = 60 (2.1), α = 5 (0.2)]
110 (3.9) − [60 (1.6) + 20 (0.7) + 5 (0.2)] = 35 (1.2)
3. Tighten drain bolt to the specified torque.

HA-67
LUBRICANT
< BASIC INSPECTION > [TYPE 2]

Specified torque : 30 N·m (306 kg-m, 22 ft-lb)

4. Install compressor and check the operation.

HA-68
PERFORMANCE TEST
< BASIC INSPECTION > [TYPE 2]
PERFORMANCE TEST
A
Inspection INFOID:0000000010501563

INSPECTION PROCEDURE B
1. Connect recovery/recycling/recharging equipment (for HFO-1234yf) or manifold gauge.
2. Start the engine, and set to the following condition.
C
Test condition
Surrounding condition Indoors or in the shade (in a well-ventilated place)
Door Closed
D
Door glass Full open
Vehicle condition
Hood Open
Engine speed Idle speed E
Temperature control switch or dial Full cold
A/C switch ON
F
A/C condition Air outlet VENT (ventilation)
Intake door position Recirculation
Fan speed Maximum speed set G
3. Maintain test condition until A/C system becomes stable. (More than 15 minutes)
4. Check that test results of “recirculating-to-discharge air temperature” and “ambient air temperature-to-
operating pressure” are within the specified value. H
5. When test results are within the specified value, inspection is complete.
If any of test result is out of the specified value, perform diagnosis by gauge pressure. Refer to HA-71,
"Symptom Table". HA
RECIRCULATING-TO-DISCHARGE AIR TEMPERATURE TABLE

Inside air (Recirculating air) at blower assembly inlet

J
Discharge air temperature from center ventilator
Relative humidity Air temperature °C (°F)
% °C (°F)
K
15 (59) 2.4 – 3.9 (36 – 39)
20 (68) 8.4 – 10.4 (47 – 51)
50 – 60
25 (77) 13.0 – 15.5 (55 – 66) L
30 (86) 16.9 – 19.8 (62 – 68)
15 (59) 3.9 – 5.3 (39 – 42)
20 (68) 10.4 – 12.5 (51 – 55) M
60 – 70
25 (77) 15.5 – 18.0 (60 – 64)
30 (86) 19.8 – 22.7 (68 – 73)
N
AMBIENT AIR TEMPERATURE-TO-OPERATING PRESSURE TABLE

HA-69
PERFORMANCE TEST
< BASIC INSPECTION > [TYPE 2]
Fresh air
High-pressure (Discharge side) Low-pressure (Suction side)
Relative humidity Air temperature kPa (bar, kg/cm2, psi) kPa (bar, kg/cm2, psi)
% °C (°F)
870 – 1,070
200 – 240
25 (77) (8.7 – 10.7, 8.9 – 10.9, 126.1 –
(2.0 – 2.4, 2.0 – 2.4, 29.0 – 34.8)
155.2)
940 -– 1,150
210 – 250
30 (86) (9.4 – 11.5, 9.6 – 11.7, 136.3 –
(2.1 – 2.5, 2.1 – 2.6, 30.5 – 36.3)
166.8)
50 – 70
1,100 – 1,440
240 – 300
35 (95) (11.0 – 14.4, 11.2 – 14.7, 159.5 –
(2.4 – 3.0, 2.4 – 3.1, 34.8 – 43.5)
208.8)
1,300 – 1,580
290 – 350
40 (104) (13.0 – 15.8, 13.3 – 16.1, 188.5 –
(2.9 – 3.5, 3.0 – 3.6, 42.1 – 50.8)
229.1)

HA-70
REFRIGERATION SYSTEM SYMPTOMS
< SYMPTOM DIAGNOSIS > [TYPE 2]

SYMPTOM DIAGNOSIS A
REFRIGERATION SYSTEM SYMPTOMS
Trouble Diagnosis For Unusual Pressure INFOID:0000000010501564
B
Diagnose using a manifold gauge whenever system’s high and/or low side pressure(s) is/are unusual. The
marker above the gauge scale in the following tables indicates the standard (usual) pressure range. Refer to
above table (Ambient air temperature-to-operating pressure table) since the standard (usual) pressure, how- C
ever, differs from vehicle to vehicle.
Symptom Table INFOID:0000000010501565
D

Gauge indication Refrigerant cycle Probable cause Corrective action

E
Collect all refrigerant, evacuate
The pressure returns to nor-
refrigerant cycle again, and
mal soon after sprinkling wa- Overfilled refrigerant.
then refill it with the specified
ter on condenser.
amount of refrigerant. F
Insufficient condenser cooling
performance.
Both high- and low-pressure sides • Poor fan rotation of radiator • Repair or replace malfunc-
Air flow to condenser is insuf- and condenser. tioning parts. G
are too high.
ficient. • Improper installation of air • Clean and repair condenser
guide. fins.
• Clogged or dirty condenser H
fins.
When compressor is stopped,
a high-pressure reading Collect all refrigerant, evacuate
quickly drops by approximate- refrigerant cycle again, and HA
AC359A
Air mixed in refrigerant cycle.
ly 196 kPa (1.96bar, 2 kg/cm2, then refill it with the specified
28 psi). It then gradually de- amount of refrigerant.
creases. J
• Low-pressure pipe is cooler
than the outlet of evapora- Expansion valve opened too
tor. much (excessive flow of refrig- Replace expansion valve.
• Low-pressure pipe is frost- erant). K
ed.
High-pressure side is excessively
high and low-pressure side is too L
low.
High-pressure pipe and upper
Clogged or crushed high-pres-
side of condenser become Repair or replace the malfunc- M
sure pipe located between
hot, however, liquid tank does tioning parts.
compressor and condenser.
not become so hot.

N
AC360A

High-pressure side is too low and

low-pressure side is too high. • The readings of both sides O
Malfunction in compressor sys-
become equal soon after
tem (insufficient compressor
compressor operation
pressure operation).
stops. Replace compressor.
• Damage or breakage of P
• There is no temperature dif-
valve.
ference between high- and
• Malfunctioning gaskets.
low-pressure sides.
AC356A

HA-71
REFRIGERATION SYSTEM SYMPTOMS
< SYMPTOM DIAGNOSIS > [TYPE 2]
Gauge indication Refrigerant cycle Probable cause Corrective action
• The area around evapora-
Clogged expansion valve.
tor outlet does not become
• Breakage of temperature Eliminate foreign material from
cold.
sensor. expansion valve, or replace it.
• The area around evapora-
• Clogging by foreign material.
tor inlet becomes frosted.
• There is a temperature dif-
ference between the areas
around outlet and inlet Malfunction in inner liquid tank Replace condenser & liquid
Both high- and low-pressure sides pipes of liquid tank. (clogged strainer). tank assembly.
are too low. • Liquid tank becomes frost-
ed.
Clogged or crushed low-pres- Repair or replace malfunction-
sure pipe. ing parts.
Check intake sensor system.
Refer to HAC-82, "Diagnosis
Evaporator becomes frosted. Procedure" (AUTOMATIC AIR
AC353A Malfunction in intake sensor. CONDITIONING SYSTEM) or
HAC-191, "Diagnosis Proce-
dure" (MANUAL AIR CONDI-
TIONING SYSTEM).
• Check for leakage.
There is a small temperature
• Collect all refrigerant, evacu-
difference between the high • Shortage of refrigerant.
ate refrigerant cycle again,
and low pressure pipes for re- • Leakage of refrigerant.
and then refill it with the spec-
frigerant cycle.
ified amount of refrigerant.
Low-pressure side sometimes be-
comes negative. • Collect all refrigerant.
• Sometimes the area
• Evacuate refrigerant cycle
around evaporator outlet • Icing caused by the mixing of
completely, and then refill it
does not become cold. water in cooler cycle.
with the specified amount of
• Sometimes the area • Deteriorated dryer in liquid
refrigerant. At this time, al-
around evaporator inlet is tank.
ways replace condenser &
frosted.
liquid tank assembly.
AC354A

• Replace compressor.
• Check ECV system. Refer to
HAC-114, "Diagnosis Proce-
There is no temperature dif-
Malfunctioning variable valve dure" (AUTOMATIC AIR
Hunting in high-pressure side. ference between high- and
in compressor. CONDITIONING SYSTEM),
low-pressure sides.
HAC-211, "Diagnosis Proce-
dure" (MANUAL AIR CONDI-
TIONING SYSTEM).

HA-72
NOISE
< SYMPTOM DIAGNOSIS > [TYPE 2]
NOISE
A
Symptom Table INFOID:0000000010501566

B
Symptom Noise source Probable cause Corrective action
Wear, breakage, or clogging of foreign Check compressor oil. Re-
Inside of compressor
material in inner parts. fer to HA-66, "Inspection".
C
Check clearance between
Unusual noise from compressor Magnet clutch Contact of clutch disc with pulley. clutch disc and pulley. Refer
when A/C is ON. to HA-75, "Inspection".
D
Check bolts for tightness.
Compressor body Loosened compressor mounting bolts. Refer to HA-74, "Exploded
View".
Check the installation condi-
E
Cooler piping (pipe and Improper installation of clip and brack- tion of the cooler piping. Re-
Unusual noise from cooler piping.
flexible hose) et. fer to HA-76, "Exploded
View".
F
• Check for leakage.
• Collect all refrigerant,
evacuate refrigerant cycle
Shortage of refrigerant. G
again, and then refill it
Unusual noise from expansion with the specified amount
Expansion valve
valve when A/C is ON. of refrigerant.
Eliminate foreign material H
Wear, breakage, or clogging of foreign
from expansion valve, or re-
material in inner parts.
place it.
Check belt tension. Refer to HA
EM-274, "Inspection" (K9K
Loosened belt engine models), EM-373,
Unusual noise from belt. — "Checking" (R9M engine
models). J
Internal compressor parts get locked Replace compressor.

HA-73
COMPRESSOR
< REMOVAL AND INSTALLATION > [TYPE 2]

REMOVAL AND INSTALLATION

COMPRESSOR
Exploded View INFOID:0000000010501532

REMOVAL

JMIIA3526GB

1. Compressor
: N·m (kg-m, ft-lb)

Removal and Installation INFOID:0000000010501533

HA-74
COMPRESSOR
< REMOVAL AND INSTALLATION > [TYPE 2]
• Check tension of the drive belt after installing compressor. Refer to EM-16, "Checking"
A
Inspection INFOID:0000000010501534

CHECK DISC TO PULLEY CLEARANCE

B
Check the clearance (B) between pulley assembly (1) and clutch
disc (2) along the entire periphery with a feeler gauge (A).

Clearance : Refer to HA-92, "Compressor". C

CAUTION:
Replace compressor if the specified clearance is not obtained,
replace adjusting spacer and readjust. D

E
JSIIA0087ZZ

HA-75
COOLER PIPE AND HOSE
< REMOVAL AND INSTALLATION > [TYPE 2]
COOLER PIPE AND HOSE
Exploded View INFOID:0000000010501535

K9K engine models

JMIIA3516GB

1. A/C unit assembly 2. O-ring 3. Internal heat exchanger pipe

: N·m (kg-m, in-lb)

: N·m (kg-m, ft-lb)

HA-76
COOLER PIPE AND HOSE
< REMOVAL AND INSTALLATION > [TYPE 2]
R9M engine models
A

JMIIA3518GB
K

1. A/C unit assembly 2. O-ring 3. Internal heat exchanger pipe

4. High-pressure pipe 1 5. Refrigerant pressure sensor 6. Condenser L
7. High-pressure pipe 2 8. High-pressure flexible hose 9. Compressor
10. Low-pressure flexible hose
: Always replace after every disassembly. M

: N·m (kg-m, in-lb)

N
HIGH-PRESSURE FLEXIBLE HOSE
HIGH-PRESSURE FLEXIBLE HOSE : Removal and Installation INFOID:0000000010501536

REMOVAL
1. Use a refrigerant collecting equipment (for HFO-1234yf) to discharge the refrigerant. Refer to HA-64,
"Recycle Refrigerant".
2. Remove mounting bolt, and then disconnect high-pressure flexible hose from the high-pressure pipe 2.
CAUTION:

HA-77
COOLER PIPE AND HOSE
< REMOVAL AND INSTALLATION > [TYPE 2]
Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid the entry
of air.
3. Remove mounting bolt, and then disconnect high-pressure flexible hose from the compressor.
CAUTION:
Cap or wrap the joint of the A/C piping and compressor with suitable material such as vinyl tape to
avoid the entry of air.
4. Remove high-pressure flexible hose from the vehicle.
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to HA-63, "Leak Test".
LOW-PRESSURE FLEXIBLE HOSE
LOW-PRESSURE FLEXIBLE HOSE : Removal and Installation INFOID:0000000010501537

CAUTION:
Perform lubricant return operation before each refrigeration system disassembly. However, if a large
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to HA-
66, "Perform Lubricant Return Operation".
REMOVAL
1. Use a refrigerant collecting equipment (for HFO-1234yf) to discharge the refrigerant. Refer to HA-64,
"Recycle Refrigerant".
2. Disconnect fixing clip, and then remove insulator upper side.
3. Remove mounting bolt, and then disconnect internal heat exchanger pipe from expansion valve.
CAUTION:
Cap or wrap the joint of the A/C piping and expansion valve with suitable material such as vinyl
tape to avoid the entry of air.
4. Remove mounting bolts, and then disconnect high-pressure pipe 1 and low-pressure flexible hose from
internal heat exchanger pipe.
CAUTION:
HA-78
COOLER PIPE AND HOSE
< REMOVAL AND INSTALLATION > [TYPE 2]
Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid the entry
of air. A
5. Remove mounting bolt, and then remove internal heat exchanger pipe.
INSTALLATION
Note the following items, and then install in the reverse order of removal. B
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to HA-63, "Leak Test". C
HIGH-PRESSURE PIPE 1
HIGH-PRESSURE PIPE 1 : Removal and Installation INFOID:0000000010501539
D
CAUTION:
Perform lubricant return operation before each refrigeration system disassembly. However, if a large
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to HA- E
66, "Perform Lubricant Return Operation".
REMOVAL
F
1. Use a refrigerant collecting equipment (for HFO-1234yf) to discharge the refrigerant. Refer to HA-64,
"Recycle Refrigerant".
2. Remove front bumper fascia assembly. Refer to EXT-19, "Removal and Installation".
G
3. Remove mounting bolt, and then disconnect high-pressure pipe 1 from internal heat exchanger pipe.
CAUTION:
Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid the entry
of air. H
4. Remove mounting bolt, and then disconnect high-pressure pipe 1 from the condenser & liquid tank
assembly.
CAUTION: HA
Cap or wrap the joint of the A/C piping and condenser with suitable material such as vinyl tape to
avoid the entry of air.
5. Disconnect refrigerant pressure sensor harness connector. J
6. Remove mounting bolt, and then remove high-pressure pipe 1 from the vehicle.
INSTALLATION
Note the following items, and then install in the reverse order of removal. K
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to HA-63, "Leak Test". L
HIGH-PRESSURE PIPE 2
HIGH-PRESSURE PIPE 2 : Removal and Installation INFOID:0000000010501540
M
CAUTION:
Perform lubricant return operation before each refrigeration system disassembly. However, if a large
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to HA- N
66, "Perform Lubricant Return Operation".
REMOVAL
O
1. Use a refrigerant collecting equipment (for HFO-1234yf) to discharge the refrigerant. Refer to HA-64,
"Recycle Refrigerant".
2. Remove front bumper fascia assembly. Refer to EXT-19, "Removal and Installation".
P
3. Remove mounting bolt, and then disconnect high-pressure pipe 2 from high-pressure flexible hose.
CAUTION:
Cap or wrap the joint of the A/C piping and expansion valve with suitable material such as vinyl
tape to avoid the entry of air.
4. Remove mounting bolt, and then disconnect high-pressure pipe 2 from condenser & liquid tank assembly.
CAUTION:

HA-79
COOLER PIPE AND HOSE
< REMOVAL AND INSTALLATION > [TYPE 2]
Cap or wrap the joint of the A/C piping and condenser with suitable material such as vinyl tape to
avoid the entry of air.
5. Remove high-pressure pipe 2 from the vehicle.
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to HA-63, "Leak Test".
REFRIGERANT PRESSURE SENSOR
REFRIGERANT PRESSURE SENSOR : Removal and Installation INFOID:0000000010501541

HA-80
CONDENSER
< REMOVAL AND INSTALLATION > [TYPE 2]
CONDENSER
A
Exploded View INFOID:0000000010501542

G
JMIIA3533ZZ

1. Condenser &liquid tank assembly 2. Radiator

H
: Pawl

CONDENSER
HA
CONDENSER : Removal and Installation INFOID:0000000010501543

CAUTION:
J
Perform lubricant return operation before each refrigeration system disassembly. However, if a large
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to HA-
66, "Perform Lubricant Return Operation".
K
REMOVAL
1. Use a refrigerant collecting equipment (for HFO-1234yf) to discharge the refrigerant. Refer to HA-64,
"Recycle Refrigerant". L
2. Remove front bumper fascia assembly. Refer to EXT-19, "Removal and Installation".
3. Remove mounting bolt, and then disconnect high-pressure pipe 1 from the condenser & liquid tank
assembly. M
CAUTION:
Cap or wrap the joint of the A/C piping and condenser with suitable material such as vinyl tape to
avoid the entry of air.
N
4. Remove mounting bolt, and then disconnect high-pressure pipe 2 from the condenser & liquid tank
assembly.
CAUTION: O
Cap or wrap the joint of the A/C piping and condenser with suitable material such as vinyl tape to
avoid the entry of air.
5. Disengage fixing pawls, and then remove the condenser & liquid tank assembly from the vehicle.
CAUTION: P
Never to damage core surface of condenser.
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.

HA-81
CONDENSER
< REMOVAL AND INSTALLATION > [TYPE 2]
• Perform lubricant adjusting procedure before installing new condenser. Refer to HA-67, "Lubricant
Adjusting Procedure for Compressor Replacement".
• Check for leakages when recharging refrigerant. Refer to HA-63, "Leak Test".

HA-82
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 2]
A/C UNIT ASSEMBLY
A
Exploded View INFOID:0000000010501544

REMOVAL B
RHD models
C

JMIIA3405GB K

1. A/C unit assembly 2. Drain hose 3. Cap

4. Instrument stay LH 5. Instrument stay RH 6. Steering member L
: N·m (kg-m, in-lb)

: N·m (kg-m, ft-lb)

HA-83
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 2]
LHD models

JMIIA3519GB

1. Cap 2. Steering member 3. Instrument stay LH

4. Instrument stay RH 5. A/C unit assembly 6. Drain hose
: N·m (kg-m, in-lb)

: N·m (kg-m, ft-lb)

DISASSEMBLY

HA-84
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 2]
A/C unit
A

HA
JMIIA3520GB

• *1: Automatic air conditioning

• *2: Manual air conditioning

HA-85
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 2]
Heater unit

JMIIA3522ZZ

A/C UNIT ASSEMBLY

A/C UNIT ASSEMBLY : Removal and Installation INFOID:0000000010501545

HA-86
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 2]
2. Drain engine coolant from cooling system. Refer to CO-65, "Draining" (K9K engine models) or CO-89,
"Draining" (R9M engine models). A
3. Remove front wiper drive assembly. Refer to WW-78, "WIPER DRIVE ASSEMBLY : Removal and Installa-
tion".
4. Remove fixing clip, and then remove insulator upper side. B
5. Remove mounting bolt, and then disconnect internal heat exchanger pipe from expansion valve. (If
equipped)
CAUTION: C
Cap or wrap the joint of the A/C piping and expansion valve with suitable material such as vinyl
tape to avoid the entry of air.
6. Remove clamp air inlet hose 2. Refer to EM-382, "Exploded View". (R9M engine models) D
7. Remove clamps, and then disconnect heater hoses from A/C unit assembly.
CAUTION:
• Some coolant may spill when heater hoses are disconnected.
E
• Close off the coolant inlet and outlet on the heater core (2 locations) with shop cloths.
8. Remove instrument panel assembly. Refer to IP-13, "Removal and Installation".
9. Remove rear floor duct 1. Refer to VTL-15, "REAR FLOOR DUCT 1 : Removal and Installation".
F
10. Remove mounting nuts (A), and then remove instrument stay LH and RH.

HA
JMIIA3353ZZ

11. Disconnect drain hose from A/C unit assembly.

JMIIA3407ZZ

12. Remove ground bolts. M

13. Remove the BCM mounting screws.
14. Remove the J/B mounting screws.
N
15. Disconnect the harness connectors and clips required to remove the steering member, and then move the
vehicle harness to the position without hindrance for work.
16. Remove mounting nuts, and then move steering column assembly to a position where it dose not inhibit
O
work. Refer to ST-10, "Removal and Installation".
17. Remove caps from steering member mounting bolts.
P

HA-87
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 2]
18. Remove steering member mounting bolts (A) and A/C unit mounting bolts (B), and then remove steering
member from the vehicle.

JMIIA3362ZZ

CAUTION:
When removing steering member, 2 workers are required to prevent it from dropping.
19. Remove A/C unit assembly.
CAUTION:
When removing A/C unit assembly, 2 workers are required to prevent it from dropping.
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to HA-63, "Leak Test".
NOTE:
• When installing drain hose (1), match the rib porsion (B) of A/C unit
(2) and mark (A) of drain hose.

JMIIA3408ZZ

• Refer to CO-65, "Refilling" (K9K engine models) or CO-89, "Refilling" (R9M engine models) when filling radi-
ator with engine coolant.
EVAPORATOR

HA-88
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 2]
EVAPORATOR : Removal and Installation INFOID:0000000010501546

A
REMOVAL
1. Remove A/C unit assembly. Refer to HA-86, "A/C UNIT ASSEMBLY : Removal and Installation".
B
2. Remove fixing screws (A) and disengage fixing pawls.

: Pawl
C
3. Remove main case rear.

E
JMIIA3382ZZ

4. Remove fixing screws (A), and then remove intake box assem-
F
bly.

JMIIA3383ZZ
HA
5. Remove fixing screws (A) and disengage fixing pawls, and then
separate heater & cooling unit case assembly.
J
: Pawl

JMIIA3384ZZ

6. Remove evaporator assembly from heater & cooling unit case. M

7. Remove mounting bolts, and then remove expansion valve from evaporator.
INSTALLATION N
Note the following items, and then install in the reverse order of removal.
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Perform lubricant adjusting procedure after installing new evaporator. Refer to HA-66, "Lubricant O
Adjusting Procedure for Components Replacement Except Compressor".
HEATER CORE
P
HEATER CORE : Removal and Installation INFOID:0000000010501547

REMOVAL
1. Remove A/C unit assembly. Refer to HA-86, "A/C UNIT ASSEMBLY : Removal and Installation".
2. Remove foot duct LH. Refer to VTL-15, "FOOT DUCT : Removal and Installation".

HA-89
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 2]
3. Remove fixing screws (A), and then remove heater pipe cover.

JMIIA3386ZZ

4. Remove heater pipe packing.

5. Disengage fixing pawl, and then remove heater pipe clamp.

: Pawl

JMIIA3387ZZ

6. Remove heater core from A/C unit assembly.

JMIIA3388ZZ

INSTALLATION
Note the following item, and then install in the reverse order of removal.
NOTE:
Refer to CO-65, "Refilling" (K9K engine models) or CO-89, "Refilling" (R9M engine models) when filling radia-
tor with engine coolant.
EXPANSION VALVE
EXPANSION VALVE : Removal and Installation INFOID:0000000010501548

HA-90
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 2]
4. Remove mounting bolts, and then remove expansion valve.
CAUTION: A
Cap or wrap the joint of the evaporator and expansion valve with suitable material such as vinyl
tape to avoid the entry of air.
INSTALLATION B
Note the following items, and then install in the reverse order of removal.
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing. C
• Check for leakages when recharging refrigerant. Refer to HA-63, "Leak Test".

HA-91
SERVICE DATA AND SPECIFICATIONS (SDS)
< SERVICE DATA AND SPECIFICATIONS (SDS) [TYPE 2]

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)
Compressor INFOID:0000000010501567

Lubricant INFOID:0000000010501568

Name ND-OIL12
Total in system 110 (3.9)
Capacity
m (Imp fl oz) Compressor (service part) charging
110 (3.9)
amount

Refrigerant INFOID:0000000010501569

Type HFO-1234yf (R-1234yf)

Capacity
0.5 (1.1)
kg (lb)

Engine Idling Speed INFOID:0000000010501570

Refer to ECK-405, "Idle Speed" (K9K engine models) or EC9-411, "Idle Speed" (R9M engine models).
Belt Tension INFOID:0000000010501571

Refer to EM-352, "Drive Belt" (K9K engine models) or EM-472, "Drive Belts" (R9M engine models).

HA-92
APPLICATION NOTICE
< HOW TO USE THIS MANUAL > [TYPE 3]

HOW TO USE THIS MANUAL A

APPLICATION NOTICE
Information INFOID:0000000010709191
B
Check the vehicle type to use the service information in this section.

Service information Destination C

HA-93
PRECAUTIONS
< PRECAUTION > [TYPE 3]

PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER" INFOID:0000000010704925

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 AIR BAG” and
“SEAT BELT” of this Service Manual.
WARNING:
Always observe the following items for preventing accidental activation.
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see “SRS AIR BAG”.
• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-
vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
Always observe the following items for preventing accidental activation.
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the
ignition ON or engine running, never use air or electric power tools or strike near the sensor(s) with
a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the
battery, and wait at least 3 minutes before performing any service.
Precaution Necessary for Steering Wheel Rotation After Battery Disconnect
INFOID:0000000010704926

CAUTION:
Comply with the following cautions to prevent any error and malfunction.
• Before removing and installing any control units, first turn the ignition power source and accessory
power source to the OFF, then disconnect both battery cables.
• After finishing work, confirm that all control unit connectors are connected properly, then re-connect
both battery cables.
• Always use CONSULT to perform self-diagnosis as a part of each function inspection after finishing
work. If a DTC is detected, perform trouble diagnosis according to self-diagnosis results.
For vehicle with steering lock unit, if the battery is disconnected or discharged, the steering wheel will lock and
cannot be turned.
If turning the steering wheel is required with the battery disconnected or discharged, follow the operation pro-
cedure below before starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Open driver door.
3. Turn the ignition switch to the ON position.
(At this time, the steering lock will be released.)
4. Turn the ignition switch to OFF position with driver door open.
5. Wait for 3 minutes or longer with driver door open.
NOTE:
• Do not close driver door because the steering wheel locks when driver door is closed.

HA-94
PRECAUTIONS
< PRECAUTION > [TYPE 3]
• The auto acc function is adapted to this vehicle. For this reason, even when the ignition switch is turned
to OFF position, the accessory power source does not turned OFF and continues to be supplied for a A
certain amount of time.
6. Disconnect both battery cables. The steering lock will remain released with both battery cables discon-
nected and the steering wheel can be turned. B
7. Perform the necessary repair operation.
8. When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn
the ignition switch from OFF position to ON position, then to LOCK position. (The steering wheel will lock C
when the ignition switch is turned to LOCK position.)
9. Perform self-diagnosis check of all control units using CONSULT.
Precaution for Procedure without Cowl Top Cover INFOID:0000000010704927
D

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

PIIB3706J

H
Precautions for Removing Battery Terminal INFOID:0000000010868425

• With the adoption of Auto ACC function, ACC power is automatically supplied by operating the intelligent key
or remote keyless entry or by opening/closing the driver side door. In addition, ACC power is supplied even HA
after the ignition switch is turned to the OFF position, i.e. ACC power is supplied for a certain fixed time.
• When disconnecting the 12V battery terminal, turn off the ACC
power before disconnecting the 12V battery terminal, observing J
“How to disconnect 12V battery terminal” described below.
NOTE:
Some ECUs operate for a certain fixed time even after ignition
switch is turned OFF and ignition power supply is stopped. If the K
battery terminal is disconnected before ECU stops, accidental DTC
detection or ECU data damage may occur.
• For vehicles with the 2-batteries, be sure to connect the main bat- L
tery and the sub battery before turning ON the ignition switch.
NOTE:
SEF289H
If the ignition switch is turned ON with any one of the terminals of
main battery and sub battery disconnected, then DTC may be detected. M
• After installing the 12V battery, always check "Self Diagnosis Result" of all ECUs and erase DTC.
NOTE:
The removal of 12V battery may cause a DTC detection error. N
HOW TO DISCONNECT 12V BATTERY TERMINAL
Disconnect 12V battery terminal according to Instruction 1 or Instruction 2 described below.
For vehicles parked by ignition switch OFF, refer to Instruction 2. O
INSTRUCTION 1
1. Open the hood.
P
2. Turn key switch to the OFF position with the driver side door opened.
3. Get out of the vehicle and close the driver side door.
4. Wait at least 3 minutes. For vehicle with the engine listed below, remove the battery terminal after a lapse
of the specified time.

D4D engine : 20 minutes

HRA2DDT : 12 minutes

HA-95
PRECAUTIONS
< PRECAUTION > [TYPE 3]
K9K engine : 4 minutes
M9R engine : 4 minutes
R9M engine : 4 minutes
V9X engine : 4 minutes
CAUTION:
While waiting, never operate the vehicle such as locking, opening, and closing doors. Violation of
this caution results in the activation of ACC power supply according to the Auto ACC function.
5. Remove 12V battery terminal.
CAUTION:
After installing 12V battery, always check self-diagnosis results of all ECUs and erase DTC.
INSTRUCTION 2 (FOR VEHICLES PARKED BY IGNITION SWITCH OFF)
1. Unlock the door with intelligent key or remote keyless entry.
NOTE:
At this moment, ACC power is supplied.
2. Open the driver side door.
3. Open the hood.
4. Close the driver side door.
5. Wait at least 3 minutes.
CAUTION:
While waiting, never operate the vehicle such as locking, opening, and closing doors. Violation of
this caution results in the activation of ACC power supply according to the Auto ACC function.
6. Remove 12V battery terminal.
CAUTION:
After installing 12V battery, always check self-diagnosis results of all ECUs and erase DTC.
Precautions For Refrigerant System Service INFOID:0000000010704928

GENERAL REFRIGERANT PRECAUTION

WARNING:
• Never breathe A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose and
throat. Remove HFC-134a (R-134a) from the A/C system, using certified service equipment meeting
requirements of SAE J-2210 [HFC-134a (R-134a) recycling equipment], or J-2209 [HFC-134a (R-134a)
recovery equipment]. Ventilate work area before resuming service if accidental system discharge
occurs. Additional health and safety information may be obtained from refrigerant and lubricant
manufacturers.
• Never release refrigerant into the air. Use approved recovery/recycling recharging equipment to cap-
ture the refrigerant each time an air conditioning system is discharged.
• Wear always eye and hand protection (goggles and gloves) when working with any refrigerant or air
conditioning system.
• Never store or heat refrigerant containers above 52°C (126°F).
• Never heat a refrigerant container with an open flame; Place the bottom of the container in a warm
pail of water if container warming is required.
• Never intentionally drop, puncture, or incinerate refrigerant containers.
• Keep refrigerant away from open flames: poisonous gas is produced if refrigerant burns.
• Refrigerant displaces oxygen, therefore be certain to work in well ventilated areas to prevent suffo-
cation.
• Never pressure test or leakage test HFC-134a (R-134a) service equipment and/or vehicle air condi-
tioning systems with compressed air during repair. Some mixtures of air and HFC-134a (R-134a)
have been shown to be combustible at elevated pressures. These mixtures, if ignited, may cause
injury or property damage. Additional health and safety information may be obtained from refriger-
ant manufacturers.
WORKING WITH HFC-134a (R-134a)
CAUTION:
• CFC-12 (R-12) refrigerant and HFC-134a (R-134a) refrigerant are not compatible. Compressor mal-
function is likely to occur if the refrigerants are mixed, refer to “CONTAMINATED REFRIGERANT”
below. To determine the purity of HFC-134a (R-134a) in the vehicle and recovery tank, use Refriger-
ant recovery/recycling recharging equipment and Refrigerant Identifier.
HA-96
PRECAUTIONS
< PRECAUTION > [TYPE 3]
• Use only specified lubricant for the HFC-134a (R-134a) A/C system and HFC-134a (R-134a) compo-
nents. Compressor malfunction is likely to occur if lubricant other than that specified is used. A
• The specified HFC-134a (R-134a) lubricant rapidly absorbs moisture from the atmosphere. The fol-
lowing handling precautions must be observed:
- Cap (seal) immediately the component to minimize the entry of moisture from the atmosphere when
B
removing refrigerant components from a vehicle.
- Never remove the caps (unseal) until just before connecting the components when installing refrig-
erant components to a vehicle. Connect all refrigerant loop components as quickly as possible to
minimize the entry of moisture into system. C
- Use only the specified lubricant from a sealed container. Reseal immediately containers of lubricant.
Lubricant becomes moisture saturated and should not be used without proper sealing.
- Never allow lubricant to come in contact with styrene foam parts. Damage may result. D
CONTAMINATED REFRIGERANT
Take appropriate steps shown below if a refrigerant other than pure HFC-134a (R-134a) is identified in
a vehicle: E
• Explain to the customer that environmental regulations prohibit the release of contaminated refrigerant into
the atmosphere.
• Explain that recovery of the contaminated refrigerant could damage service equipment and refrigerant sup-
ply. F
• Suggest the customer return the vehicle to the location of previous service where the contamination may
have occurred.
• In case of repairing, recover the refrigerant using only dedicated equipment and containers. Never G
recover contaminated refrigerant into the existing service equipment. Contact a local refrigerant prod-
uct retailer for available service if the facility does not have dedicated recovery equipment. This refrigerant
must be disposed of in accordance with all federal and local regulations. In addition, replacement of all
H
refrigerant system components on the vehicle is recommended.
• The air conditioner warranty is void if the vehicle is within the warranty period. Please contact Nissan Cus-
tomer Affairs for further assistance.
HA
REFRIGERANT CONNECTION
A new type refrigerant connection has been introduced to all refrigerant lines except the following location.
• Expansion valve to evaporator
• Refrigerant pressure sensor to high-pressure pipe 1 J
WARNING:
Check that all refrigerant is discharged into the recycling equipment and the pressure in the system is
less than atmospheric pressure. Then gradually loosen the discharge side hose fitting and remove it. K
CAUTION:
Observe the following when replacing or cleaning refrigerant cycle components.
• Store it in the same way at it is when mounted on the car when the compressor is removed. Failure L
to do so will cause lubricant to enter the low-pressure chamber.
• Use always a torque wrench and a back-up wrench when connecting tubes.
• Plug immediately all openings to prevent entry of dust and moisture after disconnecting tubes.
• Connect the pipes at the final stage of the operation when installing an air conditioner in the vehicle. M
Never remove the seal caps of pipes and other components until just before required for connection.
• Allow components stored in cool areas to warm to working area temperature before removing seal
caps. This prevents condensation from forming inside A/C components. N
• Remove thoroughly moisture from the refrigeration system before charging the refrigerant.
• Replace always used O-rings.
• Apply lubricant to circle of the O-rings shown in illustration when connecting tube. Be careful not to
apply lubricant to threaded portion. O
• O-ring must be closely attached to the groove portion of tube.
• Never damage O-ring and tube when replacing the O-ring.
• Connect tube until a click can be heard. Then tighten the nut or bolt by hand. Check that the O-ring is P
installed to tube correctly.

HA-97
PRECAUTIONS
< PRECAUTION > [TYPE 3]
• Perform leakage test and make sure that there is no leakage from connections after connecting line.
Disconnect that line and replace the O-ring when the refrigerant leaking point is found. Then tighten
connections of seal seat to the specified torque.

RHA861F

COMPRESSOR
CAUTION:
• Plug all openings to prevent moisture and foreign matter from entering.
• Store it in the same way at 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 HA-113, "Description".
• Keep friction surfaces between clutch and pulley clean. Wipe it off by using a clean waste cloth
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 distributes equally 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 one and check for normal operation after replacing the compressor magnet
clutch.
LEAK DETECTION DYE
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.
• Wear always 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 manufacture’s operating instructions and precautions prior to performing the
work for the purpose of safety and customer’s satisfaction.
• A compressor shaft seal should not necessarily be repaired because of dye seepage. The compres-
sor shaft seal should only be repaired after confirming the leakage with an electrical leak detector
(SST: J-41995).
• Remove always any remaining dye from the leakage area after repairs are completed to avoid a mis-
diagnosis during a future service.
• Never allow dye to come into contact with painted body panels or interior components. Clean imme-
diately 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 the 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, or A/C system damage may result.
• The fluorescent properties of the dye remains for three or more years unless a compressor malfunc-
tion occurs.
HA-98
PRECAUTIONS
< PRECAUTION > [TYPE 3]
NOTE:
Identification A
• Vehicles with factory installed fluorescent dye have a green label.
• Vehicles without factory installed fluorescent dye have a blue label.
Service Equipment INFOID:0000000010704929 B

RECOVERY/RECYCLING RECHARGING EQUIPMENT

Be certain to follow the manufacturer’s instructions for machine operation and machine maintenance. Never C
introduce any refrigerant other than that specified into the machine.
ELECTRICAL LEAK DETECTOR
Be certain to follow the manufacturer’s instructions for tester operation and tester maintenance. D

VACUUM PUMP
The lubricant contained inside the vacuum pump is not compatible E
with the specified lubricant for HFC-134a (R-134a) A/C systems.
The vent side of the vacuum pump is exposed to atmospheric pres-
sure. So the vacuum pump lubricant may migrate out of the pump
into the service hose. This is possible when the pump is switched F
OFF after evacuation (vacuuming) and hose is connected to it.
To prevent this migration, use a manual valve placed near the hose-
to-pump connection, as per the following. G
• 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 H
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 HA
and lubricating oil may migrate.
Some one-way valves open when vacuum is applied and close
under no vacuum condition. Such valves may restrict the pump’s
ability to pull a deep vacuum and are not recommended. J

K
RHA270DA

MANIFOLD GAUGE SET L

Be certain that the gauge face indicates HFC-134a or R-134a. Be
sure the gauge set has 1/2″-16 ACME threaded connections for ser-
vice hoses. Confirm the set has been used only with refrigerant
HFC-134a (R-134a) and specified lubricants. M

O
SHA533D

SERVICE HOSES
P

HA-99
PRECAUTIONS
< PRECAUTION > [TYPE 3]
Be certain that the service hoses display the markings described
(colored hose with 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.

RHA272D

SERVICE COUPLERS
Never attempt to connect HFC-134a (R-134a) service couplers to
the 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
RHA273D

REFRIGERANT WEIGHT SCALE

Verify that no refrigerant other than HFC-134a (R-134a) and speci-
fied lubricants have been used with the scale. The hose fitting must
be 1/2″-16 ACME if the scale controls refrigerant flow electronically.

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.

HA-100
PREPARATION
< PREPARATION > [TYPE 3]

PREPARATION A
PREPARATION
Special Service Tool INFOID:0000000010704931
B

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/ C
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 which handles D
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 E
compressor malfunction may result.

Tool number
F
(SPX-North America No.) Description
Tool name

Refrigerant dye leak detection G

kit
Kit includes:
UV lamp and UV safety goggles
HFC-134a (R-134a) dye injector H
Power supply:
Use with J-41447, 1/4 ounce
DC 12 V (Battery terminal)
bottle
HFC-134a (R-134a) fluorescent
HA
leak detection dye
(Box of 24, 1/4 ounce bottles)
Refrigerant dye cleaner
ZHA200H
J

Power supply:
DC 12 V (Battery terminal)
K
For checking refrigerant leak when fluores-
UV lamp and UV safety goggles
cent dye is installed in A/C system
Includes:
UV lamp and UV safety goggles L
SHA438F

Application:
M
For HFC-134a (R-134a) PAG oil
HFC-134a (R-134a) fluorescent Container:
leak detection dye 1/4 ounce (7.4 cc) bottle
(Box of 24, 1/4 ounce bottles) (Includes self-adhesive dye identification N
labels for affixing to vehicle after charging
system with dye.)
SHA439F

HA-101
PREPARATION
< PREPARATION > [TYPE 3]
Tool number
(SPX-North America No.) Description
Tool name

HFC-134a (R-134a) dye injector

For injecting 1/4 ounce of fluorescent leak
Use with J-41447, 1/4 ounce
detection dye into A/C system
bottle

SHA440F

Refrigerant dye cleaner For cleaning dye spills

SHA441F

Commercial Service Tools INFOID:0000000010704932

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 which handles
refrigerant and/or lubricant) are different between CFC-12 (R-12) and HFC-134a (R-134a). This is to avoid
mixed use of the refrigerants/lubricant.
• Never use adapters that convert one size fitting to another: refrigerant/lubricant contamination occurs and
compressor malfunction may result.

Tool name Description

Recovery/recycling/recharg- Function: Refrigerant recovery, recycling

ing equipment (ACR4) and recharging

RJIA0195E

Power supply:
Electrical leak detector
DC 12 V (Cigarette lighter)

SHA705EB

HA-102
PREPARATION
< PREPARATION > [TYPE 3]
Tool name Description
A

Identification:
B
• The gauge face indicates HFC-134a (R-
Manifold gauge set (with hos- 134a).
es and couplers) Fitting size: Thread size C
• 1/2″-16 ACME

D
RJIA0196E

Hose color:
• Low-pressure side hose: Blue with black
E
stripe
Service hoses • High-pressure side hose: Red with black
• High-pressure side hose stripe
• Low-pressure side hose • Utility hose: Yellow with black stripe or
• Utility hose F
green with black stripe
Hose fitting to gauge:
S-NT201
• 1/2″-16 ACME
G

Service couplers Hose fitting to service hose: H

• High-pressure side coupler M14 x 1.5 fitting is optional or permanently
• Low-pressure side coupler attached.

HA
S-NT202

J
For measuring of refrigerant
Refrigerant weight scale Fitting size: Thread size
1/2″-16 ACME
K

S-NT200

L
Capacity:
• Air displacement: 4 CFM
Vacuum pump • Micron rating: 20 microns
(Including the isolator valve) • Oil capacity: 482 g (17 oz.) M
Fitting size: Thread size
• 1/2″-16 ACME
S-NT203
N
Sealant or/and Lubricant INFOID:0000000010704933

O
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/ P
lubricant.
• Refrigerant container fittings, service hose fittings and service equipment fittings (equipment which 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.

HA-103
PREPARATION
< PREPARATION > [TYPE 3]

Tool name Description

Container color: Light blue

Container marking: HFC-134a (R-
HFC-134a (R-134a) refrigerant 134a)
Fitting size: Thread size
• Large container 1/2″-16 ACME

S-NT196

Type: Polyalkylene glycol oil (PAG),

ND-OIL8
ND-OIL8 Application:
HFC-134a (R-134a) swash plate com-
pressors

JMIIA1759ZZ

HA-104
COMPONENT PARTS
< SYSTEM DESCRIPTION > [TYPE 3]

SYSTEM DESCRIPTION A
COMPONENT PARTS
Component Parts Location INFOID:0000000010867293
B

JMIIA3523ZZ J

1. Refrigerant pressure sensor 2. Compressor 3. Condenser

4. Liquid tank 5. Expansion valve 6. Evaporator K
A. Built-in A/C unit assembly

Component Description INFOID:0000000010867291

HA-105
SYSTEM
< SYSTEM DESCRIPTION > [TYPE 3]
SYSTEM
System Diagram INFOID:0000000010704935

JPIIA1671GB

System Description INFOID:0000000010704936

REFRIGERANT CYCLE
Refrigerant Flow
The refrigerant from the compressor, flows the condenser with liquid tank, the evaporator, and returns to the
compressor. The refrigerant evaporation in the evaporator is controlled by an expansion valve.
Freeze Protection
To prevent evaporator from freezing up, the evaporator air temperature is monitored, and the voltage signal to
the A/C auto amp. makes the A/C relay go OFF and stop the compressor.
REFRIGERANT SYSTEM PROTECTION
Refrigerant Pressure Sensor
• The refrigerant system is protected against excessively high- or low-pressures by the refrigerant pressure
sensor, located on the high-pressure pipe 1. The refrigerant pressure sensor detects the pressure inside the
refrigerant line and sends the voltage signal to the ECM if the system pressure rises above, or falls below
the specifications.
• ECM turns the A/C relay to OFF and stops the compressor when the high-pressure side detected by refriger-
ant pressure sensor is following conditions;
- Approximately 3,120 kPa (31.2 bar, 31.8 kg/cm2, 452 psi) or more (Engine speed is 1,500 rpm or more.)
- Approximately 2,740 kPa (27.4 bar, 27.9 kg/cm2, 397 psi) or more (Engine speed is less than 1,500 rpm.)
- Approximately 140 kPa (1.4 bar, 1.2 kg/cm2, 17 psi) or less
Pressure Relief Valve
The refrigerant system is also protected by a pressure relief valve, located in the rear head of the compressor.
The release port on the pressure relief valve automatically opens and releases refrigerant into the atmosphere
when the pressure of refrigerant in the system increases to an unusual level [more than 3,800 kPa (38.0 bar,
38.8 kg/cm2, 551 psi)].

HA-106
DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION > [TYPE 3]

BASIC INSPECTION A
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow INFOID:0000000010704937
B

OVERALL SEQUENCE
C

P
NNIIA0143GB

DETAILED FLOW
1.INTERVIEW FOR MALFUNCTION
Interview the symptom to the customer.

HA-107
DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION > [TYPE 3]
>> GO TO 2.
2.SYMPTOM CHECK
Check the symptom from the customer's information. Check that any symptom occurs other than the inter-
viewed symptom.

Insufficient cooling/heating>>GO TO 3.
Refrigerant leakage>>GO TO 6.
Noise >> GO TO 7.
3.CONTROL SYSTEM DIAGNOSIS
Perform the system diagnosis for the A/C control system. Refer to HAC-68, "Work Flow" (AUTOMATOC AIR
CONDITIONING SYSTEM), HAC-182, "Work Flow"(MANUAL AIR CONDITIONING SYSTEM).
Is A/C control system normal?
YES >> GO TO 4.
NO >> GO TO 8.
4.PERFORMANCE TEST
Perform the performance test. Check the operation of each part. Refer to HA-116, "Inspection".

Low refrigerant charge>>GO TO 6.

Except above>>GO TO 8.
6.CHECK REFRIGERANT FOR LEAKAGES
Check refrigerant for leakages. Specify the malfunctioning part. Refer to HA-109, "Leak Test".

>> GO TO 8.
7.TROUBLE DIAGNOSIS FOR NOISE
Perform trouble diagnosis for noise. Specify the malfunctioning part. Refer to HA-120, "Symptom Table".

>> GO TO 8.
8.MALFUNCTION PART REPAIR
Repair or replace the malfunctioning part.

>> GO TO 9.
9.REPAIR CHECK (OPERATION CHECK)
Check the operation of each part.
Does it operate normally?
YES >> INSPECTION END
NO >> GO TO 2.

HA-108
REFRIGERANT
< BASIC INSPECTION > [TYPE 3]
REFRIGERANT
A
Description INFOID:0000000010704938

CONNECTION OF SERVICE TOOLS AND EQUIPMENT B

JSIIA0258ZZ

H
1. Shut-off valve 2. A/C service valve 3. Recovery/recycling/recharging
equipment
4. Vacuum pump 5. Manifold gauge set 6. Refrigerant container (HFC-134a)
7. Weight scale
HA
A. Preferred (best) method B. Alternative method C. For charging

Leak Test INFOID:0000000010704939 J

CHECK REFRIGERANT LEAKAGE USING FLUORESCENT LEAK DETECTION DYE

RJIA3815J P
1. Install a fender cover (1).
2. Wear UV safety goggles (2) provided with refrigerant dye leak detection kit.
3. Connect power cable (4) of UV lamp (6) to positive and negative terminals of the battery (3).
4. Press UV lamp switch (5) and check A/C system for refrigerant leakage. (Where refrigerant leakage
occurs, fluorescent leak detection dye appears in green color.)
WARNING:

HA-109
REFRIGERANT
< BASIC INSPECTION > [TYPE 3]
Never look directly into UV lamp light source.
NOTE:
• For continuous operating time of UV lamp, follow the manufacturer operating instructions.
• Illuminate piping joints from different angles using UV lamp and check that there is no leakage.
• Use a mirror in area that is difficult to see to check refrigerant leakage.
• Refrigerant leakage from evaporator can be detected by soaking cotton swab or a similar material with
drain hose water and illuminating it using UV lamp.
• Dust, dirt, and packing materials adhesive used for condenser, evaporator, and other locations may flu-
oresce. Be careful not to misidentify leakage.
5. Repair or replace parts where refrigerant leakage occurs and wipe off fluorescent leak detection dye.
NOTE:
Completely wipe off fluorescent leak detection dye from gaps between parts, screw threads, and others
using a cotton swab or similar materials.
6. Use a UV lamp to check that no fluorescent leak detection dye remains after finishing work.
WARNING:
Never look directly into UV lamp light source.
NOTE:
• For continuous operating time of UV lamp, follow the manufacturer operating instructions.
• Dust, dirt, and packing materials adhesive used for condenser, evaporator, and other locations may flu-
oresce. Be careful not to misidentify leakage.
CHECK REFRIGERANT LEAKAGE USING ELECTRICAL LEAK DETECTOR
WARNING:
Never check refrigerant leakage while the engine is running.
CAUTION:
Be careful of the following items so that inaccurate checks or misidentifications are avoided.
• Never allow refrigerant vapor, shop chemical vapors, cigarette smoke, or others around the vehicle.
• Always check refrigerant leakage in a low air flow environment so that refrigerant may not disperse
when leakage occurs.
1. Stop the engine.
2. Connect recovery/recycling/recharging equipment or manifold gauge set to A/C service valve.
3. Check that A/C refrigerant pressure is 345 kPa (3.45 bar, 3.52 kg/cm2, 50 psi) or more when temperature
is 16°C (61°F) or more. When pressure is lower than the specified value, recycle refrigerant completely
and fill refrigerant to the specified level.
NOTE:
Leakages may not be detected if A/C refrigerant pressure is 345 kPa (3.45 bar, 3.52 kg/cm2, 50 psi) or
less when temperature is less than 16°C (61°F).
4. Clean area where refrigerant leakage check is performed, and check refrigerant leakage along all sur-
faces of pipe connections and A/C system components using electrical leak detector probe.
CAUTION:
• Continue checking when a leakage is found. Always continue and complete checking along all
pipe connections and A/C system components for additional leakage.
• When a leakage is detected, clean leakage area using compressed air and check again.
• When checking leakage of cooling unit inside, always clean inside of drain hose so that the
probe surface may not be exposed to water or dirt.
NOTE:
• Always check leakage starting from high-pressure side and continue to low-pressure side.
• When checking leakage of cooling unit inside, operate blower fan motor for 15 minutes or more at the
maximum fan speed while the engine is stopped, and then insert electrical leak detector probe into drain
hose and hold for 10 minutes or more.
• When disconnecting shut-off valve that is connected to A/C service valve, always evacuate remaining
refrigerant so that misidentification can be avoided.
5. Repair or replace parts where refrigerant leakage is detected. (Leakage is detected but leakage area is
unknown. GO TO 6.)
6. Start the engine and set A/C control in the following conditions.
• A/C switch ON
• Air flow: VENT (ventilation)
• Intake door position: Recirculation

HA-110
REFRIGERANT
< BASIC INSPECTION > [TYPE 3]
• Temperature setting: Full cold
• Fan (blower) speed: Maximum speed set A
7. Run the engine at approximately 1,500 rpm for 2 minutes or more.
8. Stop the engine. Check again for refrigerant leakage. GO TO 4.
WARNING: B
Be careful not to get burned when the engine is hot.
NOTE:
• Start refrigerant leakage check immediately after the engine is C
stopped.
• When refrigerant circulation is stopped, pressure on the low-
pressure side rises gradually, and after this, pressure on the
high-pressure side falls gradually. D
• The higher the pressure is, the easier it is to find the refriger-
ant leakage.
E

SHA839E F
Recycle Refrigerant INFOID:0000000010704940

WARNING: G
• Always use HFC-134a for A/C refrigerant. If CFC-12 is accidentally charged, compressor is damaged
due to insufficient lubrication.
• Always observe and follow precautions described on refrigerant container. Incorrect handling may H
result in an explosion of refrigerant container, frostbite, or the loss of eyesight.
• Never breathe A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose, or
throat.
• Never allow HFC-134a to be exposed to an open flame or others because it generates poisonous gas HA
when in contact with high temperature objects. Keep workshop well ventilated.
1. Perform lubricant return operation. Refer to HA-113, "Perform Lubricant Return Operation". (If refrigerant
or lubricant leakage is detected in a large amount, omit this step, and then GO TO 2.) J
CAUTION:
Never perform lubricant return operation if a large amount of refrigerant or lubricant leakage is
detected. K
2. Check gauge pressure readings of recovery/recycling/recharging equipment. When remaining pressure
exists, recycle refrigerant from high-pressure hose and low-pressure hose.
NOTE: L
Follow manufacturer instructions for the handling or maintenance of the equipment. Never fill the equip-
ment with non-specified refrigerant.
3. Remove A/C service valve cap from the vehicle.
M
4. Connect recovery/recycling/recharging equipment to A/C service valve.
5. Operate recovery/recycling/recharging equipment, and recycle refrigerant from the vehicle.
6. Evacuate air for 10 minutes or more to remove any remaining refrigerant integrated to compressor lubri- N
cant, etc.
7. Refrigerant recycle operation is complete.
Charge Refrigerant INFOID:0000000010704941 O

WARNING:
• Always use HFC-134a for A/C refrigerant. If CFC-12 is accidentally charged, compressor is damaged P
due to insufficient lubrication.
• Always observe and follow precautions described on refrigerant container. Incorrect handling may
result in an explosion of refrigerant container, frostbite, or the loss of eyesight.
• Never breathe A/C refrigerant and lubricant vapor or mist. Exposure my irritate eyes, nose, or throat.
• Never allow HFC-134a to be exposed to an open flame or others because it generates poisonous gas
when in contact with high temperature objects. Keep workshop well ventilated.
1. Connect recovery/recycling/recharging equipment to the A/C service valve.

HA-111
REFRIGERANT
< BASIC INSPECTION > [TYPE 3]
2. Operate recovery/recycling/recharging equipment, and evacuate air from A/C system for 25 minutes or
more.
CAUTION:
Evacuate air for 15 minutes or more if the parts are replaced.
3. Check the airtightness of A/C system for 25 minutes or more. If pressure raises more than the specified
level, charge A/C system with approximately 200 g refrigerant and check that there is no refrigerant leak-
age. Refer to HA-109, "Leak Test".
CAUTION:
Check the airtightness for 15 minutes or more if the parts are replaced.
4. If parts other than compressor are replaced, fill compressor lubricant according to parts that are replaced.
5. Charge the specified amount of refrigerant to A/C system.
6. Check that A/C system operates normally.
7. Disconnect recovery/recycling/recharging equipment. (Collect the refrigerant from the high-pressure hose
and low-pressure hose of recovery/recycling/recharging equipment.)
8. Install A/C service valve cap.
9. Refrigerant charge is complete.

HA-112
LUBRICANT
< BASIC INSPECTION > [TYPE 3]
LUBRICANT
A
Description INFOID:0000000010704942

MAINTENANCE OF LUBRICANT LEVEL B

The compressor lubricant is circulating in the system together with the refrigerant. It is necessary to fill com-
pressor with lubricant when replacing A/C system parts or when a large amount of refrigerant leakage is
detected. It is important to always maintain lubricant level within the specified level. Or otherwise, the following C
conditions may occur.
• Insufficient lubricant amount: Stuck compressor
• Excessive lubricant amount: Insufficient cooling (caused by insufficient heat exchange)
D
Name : ND-OIL8

Inspection INFOID:0000000010704943 E

If a compressor is malfunctioning (internal noise, insufficient cooling), check the compressor oil.
1.COMPRESSOR OIL JUDGMENT F
1. Remove the compressor. Refer to HA-121, "Removal and Installation".
2. Sample a compressor oil and judge on the figure.
G

JSIIA0927GB

J
Judgement result 1>>Replace compressor only.
Judgement result 2>>Replace compressor and condenser & liquid tank assembly.
K
Perform Lubricant Return Operation INFOID:0000000010704944

CAUTION:
If a large amount of refrigerant or lubricant leakage is detected, never perform lubricant return opera- L
tion.
1. Start the engine and set to the following conditions.
• Engine speed: Idling to 1,200 rpm M
• A/C switch: ON
• Fan (blower) speed: Maximum speed set
• Intake door position: Recirculation
• Temperature setting: Full cold N
2. Perform lubricant return operation for approximately 10 minutes.
3. Stop the engine.
O
4. Lubricant return operation is complete.
Lubricant Adjusting Procedure for Components Replacement Except Compressor
INFOID:0000000010704945 P
Fill with lubricant for the amount that is calculated according to the following conditions.
Example: Lubricant amount to be added when replacing evaporator and condenser & liquid tank [m (Imp fl
oz)] = 45 (1.6) + 15 (0.5) + α

HA-113
LUBRICANT
< BASIC INSPECTION > [TYPE 3]

Lubricant amount to be added to A/C system

Conditions
m (Imp fl oz)
Replace evaporator 35 (1.2)
Replace condenser & liquid tank assembly 20 (0.7)
Large amount leakage 30 (1.1)
Refrigerant leakage is detected
Small amount leakage —
Lubricant amount that is recycled together with refrigerant during recycle operation α

Lubricant Adjusting Procedure for Compressor Replacement INFOID:0000000010704946

1. Drain lubricant from removed compressor and measure lubricant amount.

• Remove drain bolt (A), and then drain lubricant from drain
port.
• Measure total amount of lubricant that is drained from
removed compressor.

JMIIA3527ZZ

2. Drain lubricant from a new compressor that is calculated accord-

ing to the following conditions.

Amount to be drained (A) [m (Imp fl oz)] = F − (D +

S + R + α)
F : Lubricant amount that a new compressor con-
tains [90 (3.2)]
D : Lubricant amount that is drained from re-
moved compressor
S : Lubricant amount that remains inside of re- JPIIA1455GB

moved compressor [20 (0.7)]

R : Lubricant amount to be added according to
components that are removed except compres-
sor
α : Lubricant amount that is recycled together
with refrigerant during recycle operation
CAUTION:
If lubricant amount that is drained from removed compressor is less than 60 m (2.1 Imp fl oz),
perform calculation by setting “D” as 40 m (1.4 Imp fl oz).

Lubricant amount to be added to A/C system

Conditions
m (Imp fl oz)
Replace evaporator 45 (1.6)
Replace condenser & liquid tank 30 (1.1)
Example: Lubricant amount to be drained from a new compressor when replacing compressor and con-
denser & liquid tank assembly [m (Imp fl oz)] [D = 60 (2.1), α = 5 (0.2)]
90 (3.2) − [60 (2.1) + 20 (0.7) + 30 (1.1) + 5 (0.2)] = −25 (−0.9)
3. Tighten drain bolt to the specified torque

HA-114
LUBRICANT
< BASIC INSPECTION > [TYPE 3]

Specified torque : 30 N·m (3.1 kg-m, 22 ft-lb) A

4. Install compressor and check the operation.
B

HA-115
PERFORMANCE TEST
< BASIC INSPECTION > [TYPE 3]
PERFORMANCE TEST
Inspection INFOID:0000000010704947

INSPECTION PROCEDURE
1. Connect recovery/recycling/recharging equipment (for HFC-134a) or manifold gauge.
2. Start the engine, and set to the following condition.
Test condition
Surrounding condition Indoors or in the shade (in a well-ventilated place)
Door Closed
Door glass Full open
Vehicle condition
Hood Open
Engine speed Idle speed
Temperature control switch or dial Full cold
A/C switch ON
A/C condition Air outlet VENT (ventilation)
Intake door position Recirculation
Fan (blower) speed Maximum speed set
3. Maintain test condition until A/C system becomes stable. (More than 15 minutes)
4. Check that test results of “recirculating-to-discharge air temperature” and “ambient air temperature-to-
operating pressure” are within the specified value.
5. When test results are within the specified value, inspection is complete.
If any of test result is out of the specified value, perform diagnosis by gauge pressure. Refer to HA-118,
"Symptom Table".
RECIRCULATING-TO-DISCHARGE AIR TEMPERATURE TABLE

Inside air (Recirculating air) at blower assembly inlet

Discharge air temperature from center ventilator
Relative humidity Air temperature °C (°F)
% °C (°F)
15 (59) 5.1 – 6.7 (42 – 44)
20 (68) 10.3 – 12.3 (51 – 54)
50 – 60
25 (77) 14.2 – 16.7 (58 – 62)
30 (86) 17.4 – 20.2 (63 – 68)
15 (59) 6.7 – 8.3 (44 – 47)
20 (68) 12.3 – 14.4 (54 – 58)
60 – 70
25 (77) 16.7 – 19.1 (62 – 66)
30 (86) 20.2 – 23.0 (68 – 73)

AMBIENT AIR TEMPERATURE-TO-OPERATING PRESSURE TABLE

HA-116
PERFORMANCE TEST
< BASIC INSPECTION > [TYPE 3]
Fresh air
High-pressure (Discharge side) Low-pressure (Suction side) A
Relative humidity Air temperature kPa (bar, kg/cm2, psi) kPa (bar, kg/cm2, psi)
% °C (°F)
870 – 1,060
160 – 180 B
25 (77) (8.7 – 10.6, 8.9 – 10.8, 134.3 –
(1.6 – 1.8, 1.6 – 1.8, 23.2 – 26.1)
164.2)
1,040 -– 1,270
180 – 210
30 (86) (10.4 – 12.7, 10.6 – 13.0, 150.8 – C
(1.8 – 2.1, 1.8 – 2.1, 26.1 – 30.5)
184.2)
50 – 70
1,250 – 1,530
210 – 270
35 (95) (12.5 – 15.3, 12.8 – 15.6, 181.3 – D
(2.1 – 2.7, 2.1 – 2.8, 30.5 – 39.2)
221.9)
1,530 – 1,860
270 – 330
40 (104) (15.3 – 18.6, 15.6 – 19.0, 221.9 –
(2.7 – 3.3, 2.8 – 3.4, 39.2 – 47.9) E
269.7)

HA-117
REFRIGERATION SYSTEM SYMPTOMS
< SYMPTOM DIAGNOSIS > [TYPE 3]

SYMPTOM DIAGNOSIS
REFRIGERATION SYSTEM SYMPTOMS
Trouble Diagnosis For Unusual Pressure INFOID:0000000010707266

Gauge indication Refrigerant cycle Probable cause Corrective action

Collect all refrigerant, evacuate
The pressure returns to nor-
refrigerant cycle again, and
mal soon after sprinkling wa- Overfilled refrigerant.
then refill it with the specified
ter on condenser.
amount of refrigerant.
Insufficient condenser cooling
performance.
• Poor fan rotation of radiator • Repair or replace malfunc-
Both high- and low-pressure sides Air flow to condenser is insuf- and condenser. tioning parts.
are too high. ficient. • Improper installation of air • Clean and repair condenser
guide. fins.
• Clogged or dirty condenser
fins.
When compressor is stopped,
a high-pressure reading Collect all refrigerant, evacuate
quickly drops by approximate- refrigerant cycle again, and
ly 196 kPa (1.96 bar, 2 kg/ Air mixed in refrigerant cycle.
AC359A then refill it with the specified
cm2, 28 psi). It then gradually amount of refrigerant.
decreases.
• Low-pressure pipe is cooler
than the outlet of evapora- Expansion valve opened too
tor. much (excessive flow of refrig- Replace expansion valve.
• Low-pressure pipe is frost- erant).
ed.
High-pressure side is excessively
high and low-pressure side is too
low.
High-pressure pipe and upper
Clogged or crushed high-pres-
side of condenser become Repair or replace the malfunc-
sure pipe located between
hot, however, liquid tank does tioning parts.
compressor and condenser.
not become so hot.

AC360A

High-pressure side is too low and

HA-118
REFRIGERATION SYSTEM SYMPTOMS
< SYMPTOM DIAGNOSIS > [TYPE 3]
Gauge indication Refrigerant cycle Probable cause Corrective action
A
• The area around evapora-
Clogged expansion valve.
tor outlet does not become
• Breakage of temperature Eliminate foreign material from
cold.
sensor. expansion valve, or replace it.
• The area around evapora- B
• Clogging by foreign material.
tor inlet becomes frosted.
• There is a temperature dif-
ference between the areas
around outlet and inlet Malfunction in inner liquid tank Replace condenser & liquid
C
Both high- and low-pressure sides pipes of liquid tank. (clogged strainer). tank assembly.
are too low. • Liquid tank becomes frost-
ed. D
Clogged or crushed low-pres- Repair or replace malfunction-
sure pipe. ing parts.
Check intake sensor system. E
Refer to HAC-82, "Diagnosis
Evaporator becomes frosted. Procedure" (AUTOMATIC AIR
Malfunction in intake air tem-
AC353A CONDITIONING SYSTEM),
perature sensor.
HAC-191, "Diagnosis Proce- F
dure" (MANUAL AIR CONDI-
TIONING SYSTEM).
• Check for leakage. G
There is a small temperature
• Collect all refrigerant, evacu-
difference between the high • Shortage of refrigerant.
ate refrigerant cycle again,
and low pressure pipes for re- • Leakage of refrigerant.
and then refill it with the spec-
frigerant cycle.
ified amount of refrigerant. H
Low-pressure side sometimes be-
comes negative. • Collect all refrigerant.
• Sometimes the area
around evaporator outlet • Icing caused by the mixing of
• Evacuate refrigerant cycle HA
completely, and then refill it
does not become cold. water in cooler cycle.
with the specified amount of
• Sometimes the area • Deteriorated dryer in liquid
refrigerant. At this time, al-
around evaporator inlet is tank. J
ways replace condenser &
frosted.
liquid tank assembly.
AC354A

HA-119
NOISE
< SYMPTOM DIAGNOSIS > [TYPE 3]
NOISE
Symptom Table INFOID:0000000010707268

Symptom Noise source Probable cause Corrective action

Wear, breakage, or clogging of foreign Check compressor oil. Re-
Inside of compressor
material in inner parts. fer to HA-113, "Inspection".
Check clearance between
Unusual noise from compressor Magnet clutch Contact of clutch disc with pulley. clutch disc and pulley. Refer
when A/C is ON. to HA-122, "Inspection".
Check bolts for tightness.
Compressor body Loosened compressor mounting bolts. Refer to HA-121, "Exploded
View".
Check the installation condi-
Cooler piping (pipe and Improper installation of clip and brack- tion of the cooler piping. Re-
Unusual noise from cooler piping.
flexible hose) et. fer to HA-123, "Exploded
View".
• Check for leakage.
• Collect all refrigerant,
evacuate refrigerant cycle
Shortage of refrigerant.
again, and then refill it
Unusual noise from expansion with the specified amount
Expansion valve
valve when A/C is ON. of refrigerant.
Eliminate foreign material
Wear, breakage, or clogging of foreign
from expansion valve, or re-
material in inner parts.
place it.
Check belt tension. Refer to
EM-114, "Drive Belts"
Loosened belt
Unusual noise from belt. — (HRA2DDT), EM-248,
"Drive Belt" (MR20DD).
Internal compressor parts get locked Replace compressor.

HA-120
COMPRESSOR
< REMOVAL AND INSTALLATION > [TYPE 3]

REMOVAL AND INSTALLATION A

COMPRESSOR
Exploded View INFOID:0000000010501658
B

REMOVAL
HRA2DDT engine models C

H
JMIIA3525GB

1. Compressor HA
: N·m (kg-m, ft-lb)

MR20DD engine models J

O
JMIIA3526GB

1. Compressor
: N·m (kg-m, ft-lb)
P

Removal and Installation INFOID:0000000010501659

HA-121
COMPRESSOR
< REMOVAL AND INSTALLATION > [TYPE 3]
REMOVAL
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to HA-111,
"Recycle Refrigerant".
2. Remove drive belt. Refer to EM-16, "Removal and Installation" (HRA2DDT engine models) or EM-139,
"Removal and Installation" (MR20DD engine models).
3. Remove mounting bolts, and then disconnect low-pressure flexible hose and high-pressure flexible hose
from the compressor.
CAUTION:
Cap or wrap the joint of the A/C piping and compressor with suitable material such as vinyl tape to
avoid the entry of air.
4. Disconnect compressor harness connectors.
5. Remove mounting bolts and nut, and then remove compressor form the vehicle. (HRA2DDT engine mod-
els)
6. Remove mounting bolts, and then remove compressor form the vehicle. (MR20DD engine models)
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Perform lubricant adjusting procedure before installing new compressor. Refer to HA-114, "Lubri-
cant Adjusting Procedure for Compressor Replacement".
• Check for leakages when recharging refrigerant. Refer to HA-109, "Leak Test".
• Check tension of the drive belt after installing compressor. Refer to EM-16, "Checking" (HRA2DDT
engine models) or EM-140, "Inspection" (MR20DD engine models).
Inspection INFOID:0000000010501660

CHECK DISC TO PULLEY CLEARANCE

Check the clearance (B) between pulley assembly (1) and clutch
disc (2) along the entire periphery with a feeler gauge (A).

Clearance : Refer to HA-140, "Compressor".

CAUTION:
Replace compressor if the specified clearance is not obtained,
replace adjusting spacer and readjust.

JSIIA0087ZZ

HA-122
COOLER PIPE AND HOSE
< REMOVAL AND INSTALLATION > [TYPE 3]
COOLER PIPE AND HOSE
A
Exploded View INFOID:0000000010501661

HRA2DDT engine models B

L
JMIIA3630GB

1. A/C unit assembly 2. O-ring 3. High-pressure pipe 3 M

: N·m (kg-m, in-lb)

O
: N·m (kg-m, ft-lb)

HA-123
COOLER PIPE AND HOSE
< REMOVAL AND INSTALLATION > [TYPE 3]
MR20DD engine models

JMIIA3631GB

1. A/C unit assembly 2. O-ring 3. High-pressure pipe 3

: N·m (kg-m, in-lb)

: N·m (kg-m, ft-lb)

: Indicate that the part is connected at point with same symbol in actual cehicle.

HIGH-PRESSURE FLEXIBLE HOSE

HIGH-PRESSURE FLEXIBLE HOSE : Removal and Installation INFOID:0000000010501662

HA-124
COOLER PIPE AND HOSE
< REMOVAL AND INSTALLATION > [TYPE 3]
2. Remove mounting bolt, and then disconnect high-pressure flexible hose from the high-pressure pipe 2.
CAUTION: A
Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid the entry
of air.
3. Remove mounting bolt, and then disconnect high-pressure flexible hose from the compressor. B
CAUTION:
Cap or wrap the joint of the A/C piping and compressor with suitable material such as vinyl tape to
avoid the entry of air.
C
4. Remove high-pressure flexible hose from the vehicle.
INSTALLATION
Note the following items, and then install in the reverse order of removal. D
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to HA-109, "Leak Test".
E
LOW-PRESSURE FLEXIBLE HOSE
LOW-PRESSURE FLEXIBLE HOSE : Removal and Installation INFOID:0000000010501663

F
CAUTION:
Perform lubricant return operation before each refrigeration system disassembly. However, if a large
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to HA-
G
113, "Perform Lubricant Return Operation".
REMOVAL
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to HA-111, H
"Recycle Refrigerant".
2. Remove cowl top extension. Refer to EXT-29, "Removal and Installation". (MR20DD engine models)
3. Disengage fixing clip, and then remove insulator upper side. (MR20DD engine models) HA
4. Remove mounting bolt, and then disconnect low-pressure flexible hose from low-pressure pipe.
(HRA2DDT engine models)
CAUTION: J
Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid the entry
of air.
5. Remove mounting bolt, and then disconnect low-pressure flexible hose from expansion valve. (MR20DD K
engine models)
CAUTION:
Cap or wrap the joint of the A/C piping and expansion valve with suitable material such as vinyl
tape to avoid the entry of air. L
6. Remove mounting bolt, and then disconnect low-pressure flexible hose from the compressor.
CAUTION:
Cap or wrap the joint of the A/C piping and compressor with suitable material such as vinyl tape to M
avoid the entry of air.
7. Remove low-pressure flexible hose mounting bolt. (MR20DD engine models)
8. Remove low-pressure flexible hose from the vehicle. N

INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION: O
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to HA-109, "Leak Test".
LOW-PRESSURE PIPE P

LOW-PRESSURE PIPE : Removal and Installation INFOID:0000000010501664

HA-125
COOLER PIPE AND HOSE
< REMOVAL AND INSTALLATION > [TYPE 3]
REMOVAL
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to HA-111,
"Recycle Refrigerant".
2. Remove fixing clip, and then remove insulator upper side.
3. Remove cowl top extension. Refer to EXT-29, "Removal and Installation".
4. Remove mounting bolt, and then disconnect low-pressure pipe from expansion valve.
CAUTION:
Cap or wrap the joint of the A/C piping and expansion valve with suitable material such as vinyl
tape to avoid the entry of air.
5. Remove mounting bolts, and then disconnect low-pressure pipe from low-pressure flexible hose.
CAUTION:
Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid the entry
of air.
6. Remove mounting nut, and then remove low-pressure pipe.
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to HA-109, "Leak Test".
HIGH-PRESSURE PIPE 1
HIGH-PRESSURE PIPE 1 : Removal and Installation INFOID:0000000010501665

HA-126
COOLER PIPE AND HOSE
< REMOVAL AND INSTALLATION > [TYPE 3]
REMOVAL
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to HA-111, A
"Recycle Refrigerant".
2. Remove front bumper fascia assembly. Refer to EXT-19, "Removal and Installation".
3. Remove mounting bolt, and then disconnect high-pressure pipe 2 from high-pressure flexible hose. B
CAUTION:
Cap or wrap the joint of the A/C piping and expansion valve with suitable material such as vinyl
tape to avoid the entry of air. C
4. Remove mounting bolt, and then disconnect high-pressure pipe 2 from condenser & liquid tank assembly.
CAUTION:
Cap or wrap the joint of the A/C piping and condenser with suitable material such as vinyl tape to D
avoid the entry of air.
5. Remove high-pressure pipe 2 from the vehicle.
INSTALLATION E
Note the following items, and then install in the reverse order of removal.
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing. F
• Check for leakages when recharging refrigerant. Refer to HA-109, "Leak Test".
HIGH-PRESSURE PIPE 3
G
HIGH-PRESSURE PIPE 3 : Removal and Installation INFOID:0000000010709171

CAUTION:
Perform lubricant return operation before each refrigeration system disassembly. However, if a large H
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to HA-
113, "Perform Lubricant Return Operation".
REMOVAL HA
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to HA-111,
"Recycle Refrigerant".
2. Disconnect fixing clip, and then remove insulator upper side. J
3. Remove mounting bolt, and then disconnect high-pressure pipe 3 and low-pressure pipe from expansion
valve. (HRA2DDT engine models)
CAUTION: K
Cap or wrap the joint of the A/C piping and expansion valve with suitable material such as vinyl
tape to avoid the entry of air.
4. Remove mounting bolt, and then disconnect high-pressure pipe 3 and low-pressure flexible hose from L
expansion valve. (MR20DD engine models)
CAUTION:
Cap or wrap the joint of the A/C piping and expansion valve with suitable material such as vinyl
M
tape to avoid the entry of air.
5. Remove mounting bolt, and then disconnect high-pressure pipe 3 from high-pressure pipe 1.
CAUTION:
Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid the entry N
of air.
6. Remove high-pressure pipe 3 from the vehicle.
O
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing. P
• Check for leakages when recharging refrigerant. Refer to HA-109, "Leak Test".
REFRIGERANT PRESSURE SENSOR
REFRIGERANT PRESSURE SENSOR : Removal and Installation INFOID:0000000010501667

CAUTION:

HA-127
COOLER PIPE AND HOSE
< REMOVAL AND INSTALLATION > [TYPE 3]
Perform lubricant return operation before each refrigeration system disassembly. However, if a large
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to HA-
113, "Perform Lubricant Return Operation".
REMOVAL
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to HA-111,
"Recycle Refrigerant".
2. Remove front bumper fascia assembly. Refer to EXT-19, "Removal and Installation".
3. Clean refrigerant pressure sensor and its surrounding area, and then remove dust and rust from refriger-
ant pressure sensor.
CAUTION:
Be sure to clean carefully.
4. Disconnect refrigerant pressure sensor connector.
5. Use a adjustable wrench or other tool to hold the refrigerant pressure sensor mounting block, and then
remove the refrigerant pressure sensor from high-pressure pipe 1.
CAUTION:
• Never damage high-pressure pipe 1.
• Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid the entry
of air.
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION:
• Replace O-ring with new one. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to HA-109, "Leak Test".

HA-128
CONDENSER
< REMOVAL AND INSTALLATION > [TYPE 3]
CONDENSER
A
Exploded View INFOID:0000000010501668

G
JMIIA3533ZZ

1. Condenser & liquid tank assembly 2. Radiator

H
: Pawl

CONDENSER
HA
CONDENSER : Removal and Installation INFOID:0000000010501669

CAUTION:
J
Perform lubricant return operation before each refrigeration system disassembly. However, if a large
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to HA-
113, "Perform Lubricant Return Operation".
K
REMOVAL
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to HA-111,
"Recycle Refrigerant". L
2. Remove front bumper fascia assembly. Refer to EXT-19, "Removal and Installation".
3. Remove mounting bolt, and then disconnect high-pressure pipe 1 from the condenser & liquid tank
assembly. M
CAUTION:
Cap or wrap the joint of the A/C piping and condenser with suitable material such as vinyl tape to
avoid the entry of air.
N
4. Remove mounting bolt, and then disconnect high-pressure pipe 2 from the condenser & liquid tank
assembly.
CAUTION: O
Cap or wrap the joint of the A/C piping and condenser with suitable material such as vinyl tape to
avoid the entry of air.
5. Disengage fixing pawls, and then remove the condenser & liquid tank assembly from the vehicle.
CAUTION: P
Never damage core surface of condenser.
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.

HA-129
CONDENSER
< REMOVAL AND INSTALLATION > [TYPE 3]
• Perform lubricant adjusting procedure before installing new condenser. Refer to HA-113, "Lubricant
Adjusting Procedure for Components Replacement Except Compressor".
• Check for leakages when recharging refrigerant. Refer to HA-109, "Leak Test".

HA-130
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 3]
A/C UNIT ASSEMBLY
A
Exploded View INFOID:0000000010501670

REMOVAL B
RHD models
C

JMIIA3405GB K

1. A/C unit assembly 2. Drain hose 3. Cap

4. Instrument stay LH 5. Instrument stay RH 6. Steering member L
: N·m (kg-m, in-lb)

: N·m (kg-m, ft-lb)

HA-131
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 3]
LHD models

JMIIA3519GB

1. Cap 2. Steering member 3. Instrument stay LH

4. Instrument stay RH 5. A/C unit assembly 6. Drain hose
: N·m (kg-m, in-lb)

: N·m (kg-m, ft-lb)

DISASSEMBLY

HA-132
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 3]
A/C unit
A

HA
JMIIA3520GB

• *1: Automatic air conditioner

• *2: Manual air conditioner

HA-133
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 3]
Heater unit

JMIIA3522ZZ

A/C UNIT ASSEMBLY

A/C UNIT ASSEMBLY : Removal and Installation INFOID:0000000010501671

HA-134
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 3]
2. Drain engine coolant from cooling system. Refer to CO-11, "Draining" (HRA2DDT engine models) or CO-
38, "Draining" (MR20DD engine models). A
3. Remove front wiper drive assembly. Refer to WW-78, "WIPER DRIVE ASSEMBLY : Removal and Installa-
tion".
4. Remove fixing clip, and then remove insulator upper side. B
5. Remove mounting bolt, and then disconnect high-pressure pipe 3 and low-pressure pipe from expansion
valve. (If equipped) (HRA2DDT engine models)
CAUTION: C
Cap or wrap the joint of the A/C piping and expansion valve with suitable material such as vinyl
tape to avoid the entry of air.
6. Remove mounting bolt, and then disconnect high-pressure pipe 3 and low-pressure flexible hose from D
expansion valve. (If equipped) (MR20DD engine models)
CAUTION:
Cap or wrap the joint of the A/C piping and expansion valve with suitable material such as vinyl
tape to avoid the entry of air. E
7. Remove air duct. Refer to EM-23, "Removal and Installation" (HRA2DDT engine models) or EM-147,
"Removal and Installation" (MR20DD engine models).
8. Remove clamps, and then disconnect heater hoses from A/C unit assembly. F
CAUTION:
• Some coolant may spill when heater hoses are disconnected.
• Close off the coolant inlet and outlet on the heater core (2 locations) with shop cloths. G
9. Remove instrument panel assembly. Refer to IP-13, "Removal and Installation".
10. Remove rear floor duct 1. Refer to VTL-15, "REAR FLOOR DUCT 1 : Removal and Installation".
11. Remove mounting nuts (A), and then remove instrument stay LH and RH. H

JMIIA3353ZZ K
12. Disconnect drain hose from A/C unit assembly.

N
JMIIA3407ZZ

13. Remove ground bolts. O

14. Remove the BCM mounting screws.
15. Remove the J/B mounting screws.
16. Disconnect the harness connectors and clips required to remove the steering member, and then move the P
vehicle harness to the position without hindrance for work.
17. Remove mounting nuts, and then move steering column assembly to a position where it dose not inhibit
work. Refer to ST-10, "Removal and Installation".
18. Remove caps from steering member mounting bolts.

HA-135
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 3]
19. Remove steering member mounting bolts (A) and A/C unit mounting bolts (B), and then remove steering
member from the vehicle.

JMIIA3362ZZ

CAUTION:
When removing steering member, 2 workers are required to prevent it from dropping.
20. Remove A/C unit assembly.
CAUTION:
When removing A/C unit assembly, 2 workers are required to prevent it from dropping.
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to HA-109, "Leak Test".
NOTE:
• When installing drain hose (1), match the rib portion (B) of A/C unit
(2) and mark (A) of drain hose.

JMIIA3408ZZ

• Refer to CO-11, "Refilling" (HRA2DDT engine models) or CO-38, "Refilling" (MR20DD engine models) when
filling radiator with engine coolant.
EVAPORATOR

HA-136
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 3]
EVAPORATOR : Removal and Installation INFOID:0000000010501672

A
REMOVAL
1. Remove A/C unit assembly. Refer to HA-134, "A/C UNIT ASSEMBLY : Removal and Installation".
B
2. Remove fixing screws (A) and disengage fixing pawls.

: Pawl
C
3. Remove main case rear.

E
JMIIA3382ZZ

4. Remove fixing screws (A), and then remove intake box assem-
F
bly.

JMIIA3383ZZ
HA
5. Remove fixing screws (A) and disengage fixing pawls, and then
separate heater& cooler unit case assembly.
J
: Pawl

JMIIA3384ZZ

6. Remove evaporator assembly from heater& cooler unit case. M

7. Remove mounting bolts, and then remove expansion valve from evaporator.
INSTALLATION N
Installation is basically the reverse order of removal.
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Perform lubricant adjusting procedure after installing new evaporator. Refer to HA-113, "Lubricant O
Adjusting Procedure for Components Replacement Except Compressor".
HEATER CORE
P
HEATER CORE : Removal and Installation INFOID:0000000010501673

REMOVAL
1. Remove A/C unit assembly. Refer to HA-134, "A/C UNIT ASSEMBLY : Removal and Installation".
2. Remove foot duct LH. Refer to VTL-15, "FOOT DUCT : Removal and Installation".

HA-137
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 3]
3. Remove fixing screws (A), and then remove heater pipe cover.

JMIIA3386ZZ

4. Remove heater pipe packing.

5. Disengage fixing pawl, and then remove heater pipe clamp.

: Pawl

JMIIA3387ZZ

6. Remove heater core from A/C unit assembly.

JMIIA3388ZZ

INSTALLATION
Note the following items, and then install in the reverse order of removal.
NOTE:
Refer to CO-11, "Refilling" (HRA2DDT engine models) or CO-38, "Refilling" (MR20DD engine models) when
filling radiator with engine coolant.
EXPANSION VALVE
EXPANSION VALVE : Removal and Installation INFOID:0000000010501674

INSTALLATION
Note the following items, and then install in the reverse order of removal.
D
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to HA-109, "Leak Test".
E

HA-139
SERVICE DATA AND SPECIFICATIONS (SDS)
< SERVICE DATA AND SPECIFICATIONS (SDS) [TYPE 3]

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)
Compressor INFOID:0000000010501653

Lubricant INFOID:0000000010501654

Name ND-OIL8
Total in system 110 (3.9)
Capacity
m (Imp fl oz) Compressor (service part) charging
110 (3.9)
amount

Refrigerant INFOID:0000000010501655

Type HFC-134a (R-134a)

Capacity
0.5 (1.1)
kg (lb)

Engine Idling Speed INFOID:0000000010501656

Refer to ECH-316, "Idle Speed" (HRA2DDT engine models) or ECM-417, "Idle Speed" (MR20DD engine mod-
els).
Belt Tension INFOID:0000000010501657

Refer to EM-114, "Drive Belts" (HRA2DDT engine models) or EM-248, "Drive Belt" (MR20DD engine models).

HA-140
APPLICATION NOTICE
< HOW TO USE THIS MANUAL > [TYPE 4]

HOW TO USE THIS MANUAL A

APPLICATION NOTICE
Information INFOID:0000000010709192
B
Check the vehicle type to use the service information in this section.

Service information Destination C

HA-141
PRECAUTIONS
< PRECAUTION > [TYPE 4]

PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER" INFOID:0000000010704668

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 AIR BAG” and
“SEAT BELT” of this Service Manual.
WARNING:
Always observe the following items for preventing accidental activation.
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see “SRS AIR BAG”.
• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-
vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
Always observe the following items for preventing accidental activation.
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the
ignition ON or engine running, never use air or electric power tools or strike near the sensor(s) with
a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the
battery, and wait at least 3 minutes before performing any service.
Precaution Necessary for Steering Wheel Rotation After Battery Disconnect
INFOID:0000000010704669

HA-142
PRECAUTIONS
< PRECAUTION > [TYPE 4]
• The auto acc function is adapted to this vehicle. For this reason, even when the ignition switch is turned
to OFF position, the accessory power source does not turned OFF and continues to be supplied for a A
certain amount of time.
6. Disconnect both battery cables. The steering lock will remain released with both battery cables discon-
nected and the steering wheel can be turned. B
7. Perform the necessary repair operation.
8. When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn
the ignition switch from OFF position to ON position, then to LOCK position. (The steering wheel will lock C
when the ignition switch is turned to LOCK position.)
9. Perform self-diagnosis check of all control units using CONSULT.
Precaution for Procedure without Cowl Top Cover INFOID:0000000010704670
D

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

PIIB3706J

H
Precautions for Removing Battery Terminal INFOID:0000000010868428

• With the adoption of Auto ACC function, ACC power is automatically supplied by operating the intelligent key
or remote keyless entry or by opening/closing the driver side door. In addition, ACC power is supplied even HA
after the ignition switch is turned to the OFF position, i.e. ACC power is supplied for a certain fixed time.
• When disconnecting the 12V battery terminal, turn off the ACC
power before disconnecting the 12V battery terminal, observing J
“How to disconnect 12V battery terminal” described below.
NOTE:
Some ECUs operate for a certain fixed time even after ignition
switch is turned OFF and ignition power supply is stopped. If the K
battery terminal is disconnected before ECU stops, accidental DTC
detection or ECU data damage may occur.
• For vehicles with the 2-batteries, be sure to connect the main bat- L
tery and the sub battery before turning ON the ignition switch.
NOTE:
SEF289H
If the ignition switch is turned ON with any one of the terminals of
main battery and sub battery disconnected, then DTC may be detected. M
• After installing the 12V battery, always check "Self Diagnosis Result" of all ECUs and erase DTC.
NOTE:
The removal of 12V battery may cause a DTC detection error. N
HOW TO DISCONNECT 12V BATTERY TERMINAL
Disconnect 12V battery terminal according to Instruction 1 or Instruction 2 described below.
For vehicles parked by ignition switch OFF, refer to Instruction 2. O
INSTRUCTION 1
1. Open the hood.
P
2. Turn key switch to the OFF position with the driver side door opened.
3. Get out of the vehicle and close the driver side door.
4. Wait at least 3 minutes. For vehicle with the engine listed below, remove the battery terminal after a lapse
of the specified time.

D4D engine : 20 minutes

HRA2DDT : 12 minutes

HA-143
PRECAUTIONS
< PRECAUTION > [TYPE 4]
K9K engine : 4 minutes
M9R engine : 4 minutes
R9M engine : 4 minutes
V9X engine : 4 minutes
CAUTION:
While waiting, never operate the vehicle such as locking, opening, and closing doors. Violation of
this caution results in the activation of ACC power supply according to the Auto ACC function.
5. Remove 12V battery terminal.
CAUTION:
After installing 12V battery, always check self-diagnosis results of all ECUs and erase DTC.
INSTRUCTION 2 (FOR VEHICLES PARKED BY IGNITION SWITCH OFF)
1. Unlock the door with intelligent key or remote keyless entry.
NOTE:
At this moment, ACC power is supplied.
2. Open the driver side door.
3. Open the hood.
4. Close the driver side door.
5. Wait at least 3 minutes.
CAUTION:
While waiting, never operate the vehicle such as locking, opening, and closing doors. Violation of
this caution results in the activation of ACC power supply according to the Auto ACC function.
6. Remove 12V battery terminal.
CAUTION:
After installing 12V battery, always check self-diagnosis results of all ECUs and erase DTC.
Precautions For Refrigerant System Service INFOID:0000000010704671

GENERAL REFRIGERANT PRECAUTION

WARNING:
• Never breathe A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose and
throat. Remove HFC-134a (R-134a) from the A/C system, using certified service equipment meeting
requirements of SAE J-2210 [HFC-134a (R-134a) recycling equipment], or J-2209 [HFC-134a (R-134a)
recovery equipment]. Ventilate work area before resuming service if accidental system discharge
occurs. Additional health and safety information may be obtained from refrigerant and lubricant
manufacturers.
• Never release refrigerant into the air. Use approved recovery/recycling recharging equipment to cap-
ture the refrigerant each time an air conditioning system is discharged.
• Wear always eye and hand protection (goggles and gloves) when working with any refrigerant or air
conditioning system.
• Never store or heat refrigerant containers above 52°C (126°F).
• Never heat a refrigerant container with an open flame; Place the bottom of the container in a warm
pail of water if container warming is required.
• Never intentionally drop, puncture, or incinerate refrigerant containers.
• Keep refrigerant away from open flames: poisonous gas is produced if refrigerant burns.
• Refrigerant displaces oxygen, therefore be certain to work in well ventilated areas to prevent suffo-
cation.
• Never pressure test or leakage test HFC-134a (R-134a) service equipment and/or vehicle air condi-
tioning systems with compressed air during repair. Some mixtures of air and HFC-134a (R-134a)
have been shown to be combustible at elevated pressures. These mixtures, if ignited, may cause
injury or property damage. Additional health and safety information may be obtained from refriger-
ant manufacturers.
WORKING WITH HFC-134a (R-134a)
CAUTION:
• CFC-12 (R-12) refrigerant and HFC-134a (R-134a) refrigerant are not compatible. Compressor mal-
function is likely to occur if the refrigerants are mixed, refer to “CONTAMINATED REFRIGERANT”
below. To determine the purity of HFC-134a (R-134a) in the vehicle and recovery tank, use Refriger-
ant recovery/recycling recharging equipment and Refrigerant Identifier.
HA-144
PRECAUTIONS
< PRECAUTION > [TYPE 4]
• Use only specified lubricant for the HFC-134a (R-134a) A/C system and HFC-134a (R-134a) compo-
nents. Compressor malfunction is likely to occur if lubricant other than that specified is used. A
• The specified HFC-134a (R-134a) lubricant rapidly absorbs moisture from the atmosphere. The fol-
lowing handling precautions must be observed:
- Cap (seal) immediately the component to minimize the entry of moisture from the atmosphere when
B
removing refrigerant components from a vehicle.
- Never remove the caps (unseal) until just before connecting the components when installing refrig-
erant components to a vehicle. Connect all refrigerant loop components as quickly as possible to
minimize the entry of moisture into system. C
- Use only the specified lubricant from a sealed container. Reseal immediately containers of lubricant.
Lubricant becomes moisture saturated and should not be used without proper sealing.
- Never allow lubricant to come in contact with styrene foam parts. Damage may result. D
CONTAMINATED REFRIGERANT
Take appropriate steps shown below if a refrigerant other than pure HFC-134a (R-134a) is identified in
a vehicle: E
• Explain to the customer that environmental regulations prohibit the release of contaminated refrigerant into
the atmosphere.
• Explain that recovery of the contaminated refrigerant could damage service equipment and refrigerant sup-
ply. F
• Suggest the customer return the vehicle to the location of previous service where the contamination may
have occurred.
• In case of repairing, recover the refrigerant using only dedicated equipment and containers. Never G
recover contaminated refrigerant into the existing service equipment. Contact a local refrigerant prod-
uct retailer for available service if the facility does not have dedicated recovery equipment. This refrigerant
must be disposed of in accordance with all federal and local regulations. In addition, replacement of all
H
refrigerant system components on the vehicle is recommended.
• The air conditioner warranty is void if the vehicle is within the warranty period. Please contact Nissan Cus-
tomer Affairs for further assistance.
HA
REFRIGERANT CONNECTION
A new type refrigerant connection has been introduced to all refrigerant lines except the following location.
• Expansion valve to evaporator
• Refrigerant pressure sensor to high-pressure pipe 1 J
WARNING:
Check that all refrigerant is discharged into the recycling equipment and the pressure in the system is
less than atmospheric pressure. Then gradually loosen the discharge side hose fitting and remove it. K
CAUTION:
Observe the following when replacing or cleaning refrigerant cycle components.
• Store it in the same way at it is when mounted on the car when the compressor is removed. Failure L
to do so will cause lubricant to enter the low-pressure chamber.
• Use always a torque wrench and a back-up wrench when connecting tubes.
• Plug immediately all openings to prevent entry of dust and moisture after disconnecting tubes.
• Connect the pipes at the final stage of the operation when installing an air conditioner in the vehicle. M
Never remove the seal caps of pipes and other components until just before required for connection.
• Allow components stored in cool areas to warm to working area temperature before removing seal
caps. This prevents condensation from forming inside A/C components. N
• Remove thoroughly moisture from the refrigeration system before charging the refrigerant.
• Replace always used O-rings.
• Apply lubricant to circle of the O-rings shown in illustration when connecting tube. Be careful not to
apply lubricant to threaded portion. O
• O-ring must be closely attached to the groove portion of tube.
• Never damage O-ring and tube when replacing the O-ring.
• Connect tube until a click can be heard. Then tighten the nut or bolt by hand. Check that the O-ring is P
installed to tube correctly.

HA-145
PRECAUTIONS
< PRECAUTION > [TYPE 4]
• Perform leakage test and make sure that there is no leakage from connections after connecting line.
Disconnect that line and replace the O-ring when the refrigerant leaking point is found. Then tighten
connections of seal seat to the specified torque.

RHA861F

COMPRESSOR
CAUTION:
• Plug all openings to prevent moisture and foreign matter from entering.
• Store it in the same way at 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 HA-113, "Description".
• Keep friction surfaces between clutch and pulley clean. Wipe it off by using a clean waste cloth
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 distributes equally 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 one and check for normal operation after replacing the compressor magnet
clutch.
LEAK DETECTION DYE
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.
• Wear always 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 manufacture’s operating instructions and precautions prior to performing the
work for the purpose of safety and customer’s satisfaction.
• A compressor shaft seal should not necessarily be repaired because of dye seepage. The compres-
sor shaft seal should only be repaired after confirming the leakage with an electrical leak detector
(SST: J-41995).
• Remove always any remaining dye from the leakage area after repairs are completed to avoid a mis-
diagnosis during a future service.
• Never allow dye to come into contact with painted body panels or interior components. Clean imme-
diately 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 the 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, or A/C system damage may result.
• The fluorescent properties of the dye remains for three or more years unless a compressor malfunc-
tion occurs.
HA-146
PRECAUTIONS
< PRECAUTION > [TYPE 4]
NOTE:
Identification A
• Vehicles with factory installed fluorescent dye have a green label.
• Vehicles without factory installed fluorescent dye have a blue label.
Service Equipment INFOID:0000000010704672 B

RECOVERY/RECYCLING RECHARGING EQUIPMENT

K
RHA270DA

MANIFOLD GAUGE SET L

O
SHA533D

SERVICE HOSES
P

HA-147
PRECAUTIONS
< PRECAUTION > [TYPE 4]
Be certain that the service hoses display the markings described
(colored hose with 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.

RHA272D

Shut-off valve rotation A/C service valve

Clockwise Open
Counterclockwise Close
RHA273D

REFRIGERANT WEIGHT SCALE

RHA274D

HA-148
PREPARATION
< PREPARATION > [TYPE 4]

PREPARATION A
PREPARATION
Special Service Tool INFOID:0000000010704689
B

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

Tool number
F
(SPX-North America No.) Description
Tool name

Refrigerant dye leak detection G

HA-149
PREPARATION
< PREPARATION > [TYPE 4]
Tool number
(SPX-North America No.) Description
Tool name

HFC-134a (R-134a) dye injector

For injecting 1/4 ounce of fluorescent leak
Use with J-41447, 1/4 ounce
detection dye into A/C system
bottle

SHA440F

Refrigerant dye cleaner For cleaning dye spills

SHA441F

Commercial Service Tools INFOID:0000000010704690

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

Tool name Description

Recovery/recycling/recharg- Function: Refrigerant recovery, recycling

ing equipment (ACR4) and recharging

RJIA0195E

Power supply:
Electrical leak detector
DC 12 V (Cigarette lighter)

SHA705EB

HA-150
PREPARATION
< PREPARATION > [TYPE 4]
Tool name Description
A

Identification:
B
• The gauge face indicates HFC-134a (R-
Manifold gauge set (with hos- 134a).
es and couplers) Fitting size: Thread size C
• 1/2″-16 ACME

D
RJIA0196E

Service couplers Hose fitting to service hose: H

• High-pressure side coupler M14 x 1.5 fitting is optional or permanently
• Low-pressure side coupler attached.

HA
S-NT202

J
For measuring of refrigerant
Refrigerant weight scale Fitting size: Thread size
1/2″-16 ACME
K

S-NT200

HA-151
PREPARATION
< PREPARATION > [TYPE 4]

Tool name Description

Container color: Light blue

Container marking: HFC-134a (R-
HFC-134a (R-134a) refrigerant 134a)
Fitting size: Thread size
• Large container 1/2″-16 ACME

S-NT196

Type: Polyalkylene glycol oil (PAG),

ND-OIL8
ND-OIL8 Application:
HFC-134a (R-134a) swash plate com-
pressors

JMIIA1759ZZ

HA-152
COMPONENT PARTS
< SYSTEM DESCRIPTION > [TYPE 4]

SYSTEM DESCRIPTION A
COMPONENT PARTS
Component Parts Location INFOID:0000000010867294
B

JMIIA3523ZZ J

1. Refrigerant pressure sensor 2. Compressor 3. Condenser

4. Liquid tank 5. Expansion valve 6. Evaporator K
A. Built-in A/C unit assembly

Component Description INFOID:0000000010867295

HA-153
SYSTEM
< SYSTEM DESCRIPTION > [TYPE 4]
SYSTEM
System Diagram INFOID:0000000010704693

JPIIA1671GB

System Description INFOID:0000000010704694

REFRIGERANT CYCLE
Refrigerant Flow
The refrigerant from the compressor, flows the condenser with liquid tank, the evaporator, and returns to the
compressor. The refrigerant evaporation in the evaporator is controlled by an expansion valve.
Freeze Protection
To prevent evaporator from freezing up, the evaporator air temperature is monitored, and the voltage signal to
the A/C auto amp. makes the A/C relay go OFF and stop the compressor.
REFRIGERANT SYSTEM PROTECTION
Refrigerant Pressure Sensor
• The refrigerant system is protected against excessively high- or low-pressures by the refrigerant pressure
sensor, located on the condenser & liquid tank assembly. The refrigerant pressure sensor detects the pres-
sure inside the refrigerant line and sends the voltage signal to the ECM if the system pressure rises above,
or falls below the specifications.
• ECM turns the A/C relay to OFF and stops the compressor when the high-pressure side detected by refriger-
ant pressure sensor is following conditions;
- Approximately 3,120 kPa (31.2 bar, 31.8 kg/cm2, 452 psi) or more (Engine speed is 1,500 rpm or more.)
- Approximately 2,740 kPa (27.4 bar, 27.9 kg/cm2, 397 psi) or more (Engine speed is less than 1,500 rpm.)
- Approximately 140 kPa (1.4 bar, 1.2 kg/cm2, 17 psi) or less
Pressure Relief Valve
The refrigerant system is also protected by a pressure relief valve, located in the rear head of the compressor.
The release port on the pressure relief valve automatically opens and releases refrigerant into the atmosphere
when the pressure of refrigerant in the system increases to an unusual level [more than 3,800 kPa (38.0 bar,
38.8 kg/cm2, 551 psi)].

HA-154
DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION > [TYPE 4]

BASIC INSPECTION A
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow INFOID:0000000010704909
B

OVERALL SEQUENCE
C

P
NNIIA0143GB

DETAILED FLOW
1.INTERVIEW FOR MALFUNCTION
Interview the symptom to the customer.

HA-155
DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION > [TYPE 4]
>> GO TO 2.
2.SYMPTOM CHECK
Check the symptom from the customer's information. Check that any symptom occurs other than the inter-
viewed symptom.

Insufficient cooling/heating>>GO TO 3.
Refrigerant leakage>>GO TO 6.
Noise >> GO TO 7.
3.CONTROL SYSTEM DIAGNOSIS
Perform the system diagnosis for the A/C control system. Refer to HAC-68, "Work Flow" (AUTOMATOC AIR
CONDITIONING SYSTEM), HAC-182, "Work Flow"(MANUAL AIR CONDITIONING SYSTEM).
Is A/C control system normal?
YES >> GO TO 4.
NO >> GO TO 8.
4.PERFORMANCE TEST
Perform the performance test. Check the operation of each part. Refer to HA-116, "Inspection".

Low refrigerant charge>>GO TO 6.

Except above>>GO TO 8.
6.CHECK REFRIGERANT FOR LEAKAGES
Check refrigerant for leakages. Specify the malfunctioning part. Refer to HA-109, "Leak Test".

>> GO TO 8.
7.TROUBLE DIAGNOSIS FOR NOISE
Perform trouble diagnosis for noise. Specify the malfunctioning part. Refer to HA-120, "Symptom Table".

>> GO TO 8.
8.MALFUNCTION PART REPAIR
Repair or replace the malfunctioning part.

>> GO TO 9.
9.REPAIR CHECK (OPERATION CHECK)
Check the operation of each part.
Does it operate normally?
YES >> INSPECTION END
NO >> GO TO 2.

HA-156
REFRIGERANT
< BASIC INSPECTION > [TYPE 4]
REFRIGERANT
A
Description INFOID:0000000010704910

CONNECTION OF SERVICE TOOLS AND EQUIPMENT B

JSIIA0258ZZ

H
Shut-off valve A/C service valve Recovery/recycling/recharging
equipment
Vacuum pump Manifold gauge set Refrigerant container (HFC-134a)
HA
Weight scale
Preferred (best) method Alternative method For charging
J
Leak Test INFOID:0000000010704911

CHECK REFRIGERANT LEAKAGE USING FLUORESCENT LEAK DETECTION DYE K

P
RJIA3815J

1. Install a fender cover (1).

2. Wear UV safety goggles (2) provided with refrigerant dye leak detection kit.
3. Connect power cable (4) of UV lamp (6) to positive and negative terminals of the battery (3).
4. Press UV lamp switch (5) and check A/C system for refrigerant leakage. (Where refrigerant leakage
occurs, fluorescent leak detection dye appears in green color.)
WARNING:
HA-157
REFRIGERANT
< BASIC INSPECTION > [TYPE 4]
Never look directly into UV lamp light source.
NOTE:
• For continuous operating time of UV lamp, follow the manufacturer operating instructions.
• Illuminate piping joints from different angles using UV lamp and check that there is no leakage.
• Use a mirror in area that is difficult to see to check refrigerant leakage.
• Refrigerant leakage from evaporator can be detected by soaking cotton swab or a similar material with
drain hose water and illuminating it using UV lamp.
• Dust, dirt, and packing materials adhesive used for condenser, evaporator, and other locations may flu-
oresce. Be careful not to misidentify leakage.
5. Repair or replace parts where refrigerant leakage occurs and wipe off fluorescent leak detection dye.
NOTE:
Completely wipe off fluorescent leak detection dye from gaps between parts, screw threads, and others
using a cotton swab or similar materials.
6. Use a UV lamp to check that no fluorescent leak detection dye remains after finishing work.
WARNING:
Never look directly into UV lamp light source.
NOTE:
• For continuous operating time of UV lamp, follow the manufacturer operating instructions.
• Dust, dirt, and packing materials adhesive used for condenser, evaporator, and other locations may flu-
oresce. Be careful not to misidentify leakage.
CHECK REFRIGERANT LEAKAGE USING ELECTRICAL LEAK DETECTOR
WARNING:
Never check refrigerant leakage while the engine is running.
CAUTION:
Be careful of the following items so that inaccurate checks or misidentifications are avoided.
• Never allow refrigerant vapor, shop chemical vapors, cigarette smoke, or others around the vehicle.
• Always check refrigerant leakage in a low air flow environment so that refrigerant may not disperse
when leakage occurs.
1. Stop the engine.
2. Connect recovery/recycling/recharging equipment or manifold gauge set to A/C service valve.
3. Check that A/C refrigerant pressure is 345 kPa (3.45 bar, 3.52 kg/cm2, 50 psi) or more when temperature
is 16°C (61°F) or more. When pressure is lower than the specified value, recycle refrigerant completely
and fill refrigerant to the specified level.
NOTE:
Leakages may not be detected if A/C refrigerant pressure is 345 kPa (3.45 bar, 3.52 kg/cm2, 50 psi) or
less when temperature is less than 16°C (61°F).
4. Clean area where refrigerant leakage check is performed, and check refrigerant leakage along all sur-
faces of pipe connections and A/C system components using electrical leak detector probe.
CAUTION:
• Continue checking when a leakage is found. Always continue and complete checking along all
pipe connections and A/C system components for additional leakage.
• When a leakage is detected, clean leakage area using compressed air and check again.
• When checking leakage of cooling unit inside, always clean inside of drain hose so that the
probe surface may not be exposed to water or dirt.
NOTE:
• Always check leakage starting from high-pressure side and continue to low-pressure side.
• When checking leakage of cooling unit inside, operate blower fan motor for 15 minutes or more at the
maximum fan speed while the engine is stopped, and then insert electrical leak detector probe into drain
hose and hold for 10 minutes or more.
• When disconnecting shut-off valve that is connected to A/C service valve, always evacuate remaining
refrigerant so that misidentification can be avoided.
5. Repair or replace parts where refrigerant leakage is detected. (Leakage is detected but leakage area is
unknown. GO TO 6.)
6. Start the engine and set A/C control in the following conditions.
• A/C switch ON
• Air flow: VENT (ventilation)
• Intake door position: Recirculation

HA-158
REFRIGERANT
< BASIC INSPECTION > [TYPE 4]
• Temperature setting: Full cold
• Fan (blower) speed: Maximum speed set A
7. Run the engine at approximately 1,500 rpm for 2 minutes or more.
8. Stop the engine. Check again for refrigerant leakage. GO TO 4.
WARNING: B
Be careful not to get burned when the engine is hot.
NOTE:
• Start refrigerant leakage check immediately after the engine is C
stopped.
• When refrigerant circulation is stopped, pressure on the low-
pressure side rises gradually, and after this, pressure on the
high-pressure side falls gradually. D
• The higher the pressure is, the easier it is to find the refriger-
ant leakage.
E

SHA839E F
Recycle Refrigerant INFOID:0000000010704912

HA-159
REFRIGERANT
< BASIC INSPECTION > [TYPE 4]
2. Operate recovery/recycling/recharging equipment, and evacuate air from A/C system for 25 minutes or
more.
CAUTION:
Evacuate air for 15 minutes or more if the parts are replaced.
3. Check the airtightness of A/C system for 25 minutes or more. If pressure raises more than the specified
level, charge A/C system with approximately 200 g refrigerant and check that there is no refrigerant leak-
age. Refer to HA-109, "Leak Test".
CAUTION:
Check the airtightness for 15 minutes or more if the parts are replaced.
4. If parts other than compressor are replaced, fill compressor lubricant according to parts that are replaced.
5. Charge the specified amount of refrigerant to A/C system.
6. Check that A/C system operates normally.
7. Disconnect recovery/recycling/recharging equipment. (Collect the refrigerant from the high-pressure hose
and low-pressure hose of recovery/recycling/recharging equipment.)
8. Install A/C service valve cap.
9. Refrigerant charge is complete.

HA-160
LUBRICANT
< BASIC INSPECTION > [TYPE 4]
LUBRICANT
A
Description INFOID:0000000010704914

MAINTENANCE OF LUBRICANT LEVEL B

The compressor lubricant is circulating in the system together with the refrigerant. It is necessary to fill com-
pressor with lubricant when replacing A/C system parts or when a large amount of refrigerant leakage is
detected. It is important to always maintain lubricant level within the specified level. Or otherwise, the following C
conditions may occur.
• Insufficient lubricant amount: Stuck compressor
• Excessive lubricant amount: Insufficient cooling (caused by insufficient heat exchange)
D
Name : ND-OIL8

Inspection INFOID:0000000010704915 E

If a compressor is malfunctioning (internal noise, insufficient cooling), check the compressor oil.
1.COMPRESSOR OIL JUDGMENT F
1. Remove the compressor. Refer to HA-169, "Removal and Installation".
2. Sample a compressor oil and judge on the figure.
G

JSIIA0927GB

J
Judgement result 1>>Replace compressor only.
Judgement result 2>>Replace compressor and condenser & liquid tank assembly.
K
Perform Lubricant Return Operation INFOID:0000000010704916

CAUTION:
If a large amount of refrigerant or lubricant leakage is detected, never perform lubricant return opera- L
tion.
1. Start the engine and set to the following conditions.
• Engine speed: Idling to 1,200 rpm M
• A/C switch: ON
• Fan (blower) speed: Maximum speed set
• Intake door position: Recirculation
• Temperature setting: Full cold N
2. Perform lubricant return operation for approximately 10 minutes.
3. Stop the engine.
O
4. Lubricant return operation is complete.
Lubricant Adjusting Procedure for Components Replacement Except Compressor
INFOID:0000000010704917 P
Fill with lubricant for the amount that is calculated according to the following conditions.
Example: Lubricant amount to be added when replacing evaporator and condenser & liquid tank assembly
[m (Imp fl oz)] = 45 (1.6) + 15 (0.5) + α

HA-161
LUBRICANT
< BASIC INSPECTION > [TYPE 4]

Lubricant amount to be added to A/C system

Lubricant Adjusting Procedure for Compressor Replacement INFOID:0000000010704918

1. Drain lubricant from removed compressor and measure lubricant amount.

• Remove drain bolt (A), and then drain lubricant from drain
port.
• Measure total amount of lubricant that is drained from
removed compressor.

JMIIA3527ZZ

2. Drain lubricant from a new compressor that is calculated accord-

ing to the following conditions.

Amount to be drained (A) [m (Imp fl oz)] = F − (D +

S + R + α)
F : Lubricant amount that a new compressor con-
tains [90 (3.2)]
D : Lubricant amount that is drained from re-
moved compressor
S : Lubricant amount that remains inside of re- JPIIA1455GB

moved compressor [20 (0.7)]

Lubricant amount to be added to A/C system

HA-162
LUBRICANT
< BASIC INSPECTION > [TYPE 4]

Specified torque : 30 N·m (3.1 kg-m, 22 ft-lb) A

4. Install compressor and check the operation.
B

HA-163
PERFORMANCE TEST
< BASIC INSPECTION > [TYPE 4]
PERFORMANCE TEST
Inspection INFOID:0000000010704919

Inside air (Recirculating air) at blower assembly inlet

AMBIENT AIR TEMPERATURE-TO-OPERATING PRESSURE TABLE

HA-164
PERFORMANCE TEST
< BASIC INSPECTION > [TYPE 4]
Fresh air
High-pressure (Discharge side) Low-pressure (Suction side) A
Relative humidity Air temperature kPa (bar, kg/cm2, psi) kPa (bar, kg/cm2, psi)
% °C (°F)
870 – 1,060
160 – 180 B
25 (77) (8.7 – 10.6, 8.9 – 10.8, 134.3 –
(1.6 – 1.8, 1.6 – 1.8, 23.2 – 26.1)
164.2)
1,040 -– 1,270
180 – 210
30 (86) (10.4 – 12.7, 10.6 – 13.0, 150.8 – C
(1.8 – 2.1, 1.8 – 2.1, 26.1 – 30.5)
184.2)
50 – 70
1,250 – 1,530
210 – 270
35 (95) (12.5 – 15.3, 12.8 – 15.6, 181.3 – D
(2.1 – 2.7, 2.1 – 2.8, 30.5 – 39.2)
221.9)
1,530 – 1,860
270 – 330
40 (104) (15.3 – 18.6, 15.6 – 19.0, 221.9 –
(2.7 – 3.3, 2.8 – 3.4, 39.2 – 47.9) E
269.7)

HA-165
REFRIGERATION SYSTEM SYMPTOMS
< SYMPTOM DIAGNOSIS > [TYPE 4]

SYMPTOM DIAGNOSIS
REFRIGERATION SYSTEM SYMPTOMS
Trouble Diagnosis For Unusual Pressure INFOID:0000000010704922

Gauge indication Refrigerant cycle Probable cause Corrective action

Collect all refrigerant, evacuate
The pressure returns to nor-
refrigerant cycle again, and
mal soon after sprinkling wa- Overfilled refrigerant.
then refill it with the specified
ter on condenser.
amount of refrigerant.
Insufficient condenser cooling
performance.
• Poor fan rotation of radiator • Repair or replace malfunc-
Both high- and low-pressure sides Air flow to condenser is insuf- and condenser. tioning parts.
are too high. ficient. • Improper installation of air • Clean and repair condenser
guide. fins.
• Clogged or dirty condenser
fins.
When compressor is stopped,
a high-pressure reading Collect all refrigerant, evacuate
quickly drops by approximate- refrigerant cycle again, and
ly 196 kPa (1.96 bar, 2 kg/ Air mixed in refrigerant cycle.
AC359A then refill it with the specified
cm2, 28 psi). It then gradually amount of refrigerant.
decreases.
• Low-pressure pipe is cooler
than the outlet of evapora- Expansion valve opened too
tor. much (excessive flow of refrig- Replace expansion valve.
• Low-pressure pipe is frost- erant).
ed.
High-pressure side is excessively
high and low-pressure side is too
low.
High-pressure pipe and upper
Clogged or crushed high-pres-
side of condenser become Repair or replace the malfunc-
sure pipe located between
hot, however, liquid tank does tioning parts.
compressor and condenser.
not become so hot.

AC360A

High-pressure side is too low and

HA-166
REFRIGERATION SYSTEM SYMPTOMS
< SYMPTOM DIAGNOSIS > [TYPE 4]
Gauge indication Refrigerant cycle Probable cause Corrective action
A
• The area around evapora-
Clogged expansion valve.
tor outlet does not become
• Breakage of temperature Eliminate foreign material from
cold.
sensor. expansion valve, or replace it.
• The area around evapora- B
• Clogging by foreign material.
tor inlet becomes frosted.
• There is a temperature dif-
ference between the areas
around outlet and inlet Malfunction in inner liquid tank Replace condenser & liquid
C
Both high- and low-pressure sides pipes of liquid tank. (clogged strainer). tank assembly.
are too low. • Liquid tank becomes frost-
ed. D
Clogged or crushed low-pres- Repair or replace malfunction-
sure pipe. ing parts.
Check intake sensor system. E
Refer to HAC-82, "Diagnosis
Evaporator becomes frosted. Procedure" (AUTOMATIC AIR
Malfunction in intake air tem-
AC353A CONDITIONING SYSTEM),
perature sensor.
HAC-191, "Diagnosis Proce- F
dure" (MANUAL AIR CONDI-
TIONING SYSTEM).
• Check for leakage. G
There is a small temperature
• Collect all refrigerant, evacu-
difference between the high • Shortage of refrigerant.
ate refrigerant cycle again,
and low pressure pipes for re- • Leakage of refrigerant.
and then refill it with the spec-
frigerant cycle.
ified amount of refrigerant. H
Low-pressure side sometimes be-
comes negative. • Collect all refrigerant.
• Sometimes the area
around evaporator outlet • Icing caused by the mixing of
• Evacuate refrigerant cycle HA
completely, and then refill it
does not become cold. water in cooler cycle.
with the specified amount of
• Sometimes the area • Deteriorated dryer in liquid
refrigerant. At this time, al-
around evaporator inlet is tank. J
ways replace condenser &
frosted.
liquid tank assembly.
AC354A

HA-167
NOISE
< SYMPTOM DIAGNOSIS > [TYPE 4]
NOISE
Symptom Table INFOID:0000000010704924

Symptom Noise source Probable cause Corrective action

Wear, breakage, or clogging of foreign Check compressor oil. Re-
Inside of compressor
material in inner parts. fer to HA-113, "Inspection".
Check clearance between
Unusual noise from compressor Magnet clutch Contact of clutch disc with pulley. clutch disc and pulley. Refer
when A/C is ON. to HA-170, "Inspection".
Check bolts for tightness.
Compressor body Loosened compressor mounting bolts. Refer to HA-169, "Exploded
View".
Check the installation condi-
Cooler piping (pipe and Improper installation of clip and brack- tion of the cooler piping. Re-
Unusual noise from cooler piping.
flexible hose) et. fer to HA-171, "Exploded
View".
• Check for leakage.
• Collect all refrigerant,
evacuate refrigerant cycle
Shortage of refrigerant.
again, and then refill it
Unusual noise from expansion with the specified amount
Expansion valve
valve when A/C is ON. of refrigerant.
Eliminate foreign material
Wear, breakage, or clogging of foreign
from expansion valve, or re-
material in inner parts.
place it.
Check belt tension. Refer to
EM-352, "Drive Belt" (K9K),
Loosened belt
Unusual noise from belt. — EM-472, "Drive Belts"
(R9M).
Internal compressor parts get locked Replace compressor.

HA-168
COMPRESSOR
< REMOVAL AND INSTALLATION > [TYPE 4]

REMOVAL AND INSTALLATION A

COMPRESSOR
Exploded View INFOID:0000000010707890
B

REMOVAL
C

H
JMIIA3526GB

1. Compressor
HA
: N·m (kg-m, ft-lb)

Removal and Installation INFOID:0000000010707891

J
CAUTION:
Perform lubricant return operation before each refrigeration system disassembly. However, if a large
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to HA- K
66, "Perform Lubricant Return Operation".
REMOVAL
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to HA-64, "Recy- L
cle Refrigerant".
2. Remove alternator. Refer to the following items.
• K9K engine models: Refer to CHG-30, "K9K : Removal and Installation". M
• R9M engine models (with stop/start system): Refer to CHG-31, "R9M : Removal and Installation".
• R9M engine models (without stop/start system): Refer to CHG-53, "R9M : Removal and Installation".
3. Remove mounting bolts, and then disconnect low-pressure flexible hose and high-pressure flexible hose N
from the compressor.
CAUTION:
Cap or wrap the joint of the A/C piping and compressor with suitable material such as vinyl tape to
O
avoid the entry of air.
4. Disconnect compressor harness connectors.
5. Remove mounting bolts, and then remove compressor form the vehicle. P
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Perform lubricant adjusting procedure before installing new compressor. Refer to HA-67, "Lubricant
Adjusting Procedure for Compressor Replacement".
• Check for leakages when recharging refrigerant. Refer to HA-63, "Leak Test".

HA-169
COMPRESSOR
< REMOVAL AND INSTALLATION > [TYPE 4]
Inspection INFOID:0000000010707892

CHECK DISC TO PULLEY CLEARANCE

Check the clearance (B) between pulley assembly (1) and clutch
disc (2) along the entire periphery with a feeler gauge (A).

Clearance : Refer to HA-188, "Compressor".

CAUTION:
Replace compressor if the specified clearance is not obtained,
replace adjusting spacer and readjust.

JSIIA0087ZZ

HA-170
COOLER PIPE AND HOSE
< REMOVAL AND INSTALLATION > [TYPE 4]
COOLER PIPE AND HOSE
A
Exploded View INFOID:0000000010707893

K9K engine models B

L
JMIIA3632GB

1. A/C unit assembly 2. O-ring 3. High-pressure pipe 3 M

: N·m (kg-m, in-lb)

O
: N·m (kg-m, ft-lb)

HA-171
COOLER PIPE AND HOSE
< REMOVAL AND INSTALLATION > [TYPE 4]
R9M engine models

JMIIA3632GB

1. A/C unit assembly 2. O-ring 3. High-pressure pipe 3

: N·m (kg-m, in-lb)

: N·m (kg-m, ft-lb)

HIGH-PRESSURE FLEXIBLE HOSE

HIGH-PRESSURE FLEXIBLE HOSE : Removal and Installation INFOID:0000000010707894

HA-172
COOLER PIPE AND HOSE
< REMOVAL AND INSTALLATION > [TYPE 4]
CAUTION:
Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid the entry A
of air.
3. Remove mounting bolt, and then disconnect high-pressure flexible hose from the compressor.
CAUTION: B
Cap or wrap the joint of the A/C piping and compressor with suitable material such as vinyl tape to
avoid the entry of air.
4. Remove high-pressure flexible hose from the vehicle.
C
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION: D
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to HA-63, "Leak Test".
LOW-PRESSURE FLEXIBLE HOSE E
LOW-PRESSURE FLEXIBLE HOSE : Removal and Installation INFOID:0000000010707895

CAUTION: F
Perform lubricant return operation before each refrigeration system disassembly. However, if a large
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to HA-
66, "Perform Lubricant Return Operation".
G
REMOVAL
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to HA-64, "Recy-
cle Refrigerant". H
2. Remove mounting bolt, and then disconnect low-pressure flexible hose from low-pressure pipe.
CAUTION:
Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid the entry HA
of air.
3. Remove mounting bolt, and then disconnect low-pressure flexible hose from the compressor.
CAUTION: J
Cap or wrap the joint of the A/C piping and compressor with suitable material such as vinyl tape to
avoid the entry of air.
4. Remove low-pressure flexible hose from the vehicle.
K
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION: L
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to HA-63, "Leak Test".
LOW-PRESSURE PIPE M
LOW-PRESSURE PIPE : Removal and Installation INFOID:0000000010707896

CAUTION: N
Perform lubricant return operation before each refrigeration system disassembly. However, if a large
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to HA-
66, "Perform Lubricant Return Operation".
O
REMOVAL
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to HA-64, "Recy-
cle Refrigerant". P
2. Remove fixing clip, and then remove insulator upper side.
3. Remove cowl top extension. Refer to EXT-29, "Removal and Installation".
4. Remove mounting bolt, and then disconnect low-pressure pipe from expansion valve.
CAUTION:
Cap or wrap the joint of the A/C piping and expansion valve with suitable material such as vinyl
tape to avoid the entry of air.

HA-173
COOLER PIPE AND HOSE
< REMOVAL AND INSTALLATION > [TYPE 4]
5. Remove mounting bolt, and then disconnect low-pressure flexible hose from low-pressure pipe.
CAUTION:
Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid the entry
of air.
6. Remove mounting bolt, and then remove low-pressure pipe.
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to HA-63, "Leak Test".
HIGH-PRESSURE PIPE 1
HIGH-PRESSURE PIPE 1 : Removal and Installation INFOID:0000000010707897

HA-174
COOLER PIPE AND HOSE
< REMOVAL AND INSTALLATION > [TYPE 4]
CAUTION:
Cap or wrap the joint of the A/C piping and condenser with suitable material such as vinyl tape to A
avoid the entry of air.
5. Remove high-pressure pipe 2 from the vehicle.
INSTALLATION B
Note the following items, and then install in the reverse order of removal.
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing. C
• Check for leakages when recharging refrigerant. Refer to HA-63, "Leak Test".
HIGH-PRESSURE PIPE 3
D
HIGH-PRESSURE PIPE 3 : Removal and Installation INFOID:0000000010707921

CAUTION:
Perform lubricant return operation before each refrigeration system disassembly. However, if a large E
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to HA-
66, "Perform Lubricant Return Operation".
REMOVAL F
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to HA-64, "Recy-
cle Refrigerant".
G
2. Disconnect fixing clip, and then remove insulator upper side.
3. Remove mounting bolt, and then disconnect high-pressure pipe 3 and low-pressure pipe from expansion
valve.
CAUTION: H
Cap or wrap the joint of the A/C piping and expansion valve with suitable material such as vinyl
tape to avoid the entry of air.
4. Remove mounting bolt, and then disconnect high-pressure pipe 3 from the high-pressure pipe 1. HA
CAUTION:
Cap or wrap the joint of the A/C piping and condenser with suitable material such as vinyl tape to
avoid the entry of air. J
5. Remove mounting bolt, and then remove high-pressure pipe 3 from the vehicle.
INSTALLATION
Note the following items, and then install in the reverse order of removal. K
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to HA-63, "Leak Test". L
REFRIGERANT PRESSURE SENSOR
REFRIGERANT PRESSURE SENSOR : Removal and Installation INFOID:0000000010707899
M
CAUTION:
Perform lubricant return operation before each refrigeration system disassembly. However, if a large
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to HA- N
66, "Perform Lubricant Return Operation".
REMOVAL
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to HA-64, "Recy- O
cle Refrigerant".
2. Remove front bumper fascia assembly. Refer to EXT-19, "Removal and Installation".
P
3. Clean refrigerant pressure sensor and its surrounding area, and then remove dust and rust from refriger-
ant pressure sensor.
CAUTION:
Be sure to clean carefully.
4. Disconnect refrigerant pressure sensor connector.
5. Use a adjustable wrench or other tool to hold the refrigerant pressure sensor mounting block, and then
remove the refrigerant pressure sensor from high-pressure pipe 1.

HA-175
COOLER PIPE AND HOSE
< REMOVAL AND INSTALLATION > [TYPE 4]
CAUTION:
• Never damage high-pressure pipe 1.
• Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid the entry
of air.
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION:
• Replace O-ring with new one. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to HA-63, "Leak Test".

HA-176
CONDENSER
< REMOVAL AND INSTALLATION > [TYPE 4]
CONDENSER
A
Exploded View INFOID:0000000010707900

G
JMIIA3533ZZ

1. Condenser & liquid tank assembly 2. Radiator

H
: Pawl

CONDENSER
HA
CONDENSER : Removal and Installation INFOID:0000000010707901

CAUTION:
J
Perform lubricant return operation before each refrigeration system disassembly. However, if a large
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to HA-
66, "Perform Lubricant Return Operation".
K
REMOVAL
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to HA-64, "Recy-
cle Refrigerant". L
2. Remove front bumper fascia assembly. Refer to EXT-19, "Removal and Installation".
3. Remove mounting bolt, and then disconnect high-pressure pipe 1 from the condenser & liquid tank
assembly. M
CAUTION:
Cap or wrap the joint of the A/C piping and condenser with suitable material such as vinyl tape to
avoid the entry of air.
N
4. Remove mounting bolt, and then disconnect high-pressure pipe 2 from the condenser & liquid tank
assembly.
CAUTION: O
Cap or wrap the joint of the A/C piping and condenser with suitable material such as vinyl tape to
avoid the entry of air.
5. Disengage fixing pawls, and then remove the condenser from the vehicle.
CAUTION: P
Never damage core surface of condenser.
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.

HA-177
CONDENSER
< REMOVAL AND INSTALLATION > [TYPE 4]
• Perform lubricant adjusting procedure before installing new condenser. Refer to HA-67, "Lubricant
Adjusting Procedure for Compressor Replacement".
• Check for leakages when recharging refrigerant. Refer to HA-63, "Leak Test".

HA-178
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 4]
A/C UNIT ASSEMBLY
A
Exploded View INFOID:0000000010707902

REMOVAL B
RHD models
C

JMIIA3405GB K

1. A/C unit assembly 2. Drain hose 3. Cap

4. Instrument stay LH 5. Instrument stay RH 6. Steering member L
: N·m (kg-m, in-lb)

: N·m (kg-m, ft-lb)

HA-179
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 4]
LHD models

JMIIA3519GB

1. Cap 2. Steering member 3. Instrument stay LH

4. Instrument stay RH 5. A/C unit assembly 6. Drain hose
: N·m (kg-m, in-lb)

: N·m (kg-m, ft-lb)

DISASSEMBLY

HA-180
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 4]
A/C unit
A

HA
JMIIA3520GB

• *1: Automatic air conditioning

• *2: Manual air conditioning

HA-181
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 4]
Heater unit

JMIIA3522ZZ

A/C UNIT ASSEMBLY

A/C UNIT ASSEMBLY : Removal and Installation INFOID:0000000010707903

HA-182
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 4]
2. Drain engine coolant from cooling system. Refer to CO-65, "Draining" (K9K engine models) or CO-89,
"Draining" (R9M engine models). A
3. Remove front wiper drive assembly. Refer to WW-78, "WIPER DRIVE ASSEMBLY : Removal and Installa-
tion".
4. Remove fixing clip, and then remove insulator upper side. B
5. Remove mounting bolt, and then disconnect low-pressure pipe and high-pressure pipe 3 from expansion
valve. (If equipped)
CAUTION: C
Cap or wrap the joint of the A/C piping and expansion valve with suitable material such as vinyl
tape to avoid the entry of air.
6. Remove clamps, and then disconnect heater hoses from A/C unit assembly. D
CAUTION:
• Some coolant may spill when heater hoses are disconnected.
• Close off the coolant inlet and outlet on the heater core (2 locations) with shop cloths.
E
7. Remove instrument panel assembly. Refer to IP-13, "Removal and Installation".
8. Remove rear floor duct 1. Refer to VTL-15, "REAR FLOOR DUCT 1 : Removal and Installation".
9. Remove mounting nuts (A), and then remove instrument stay LH and RH.
F

JMIIA3353ZZ
HA
10. Disconnect drain hose from A/C unit assembly.

L
JMIIA3407ZZ

11. Remove ground bolts.

12. Remove the BCM mounting screws. M
13. Remove the J/B mounting screws.
14. Disconnect the harness connectors and clips required to remove the steering member, and then move the
N
vehicle harness to the position without hindrance for work.
15. Remove mounting nuts, and then move steering column assembly to a position where it dose not inhibit
work. Refer to ST-10, "Removal and Installation".
O
16. Remove caps from steering member mounting bolts.

HA-183
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 4]
17. Remove steering member mounting bolts (A) and A/C unit mounting bolts (B), and then remove steering
member from the vehicle.

JMIIA3362ZZ

CAUTION:
When removing steering member, 2 workers are required to prevent it from dropping.
18. Remove A/C unit assembly.
CAUTION:
When removing A/C unit assembly, 2 workers are required to prevent it from dropping.
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant. Refer to HA-63, "Leak Test".
NOTE:
• When installing drain hose (1), match the rib porsion (B) of A/C unit
(2) and mark (A) of drain hose.

JMIIA3408ZZ

• Refer to CO-65, "Refilling" (K9K engine models) or CO-89, "Refilling" (R9M engine models) when filling radi-
ator with engine coolant.
EVAPORATOR

HA-184
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 4]
EVAPORATOR : Removal and Installation INFOID:0000000010707904

A
REMOVAL
1. Remove A/C unit assembly. Refer to HA-182, "A/C UNIT ASSEMBLY : Removal and Installation".
B
2. Remove fixing screws (A) and disengage fixing pawls.

: Pawl
C
3. Remove main case rear.

E
JMIIA3382ZZ

4. Remove fixing screws (A), and then remove intake box assem-
F
bly.

JMIIA3383ZZ
HA
5. Remove fixing screws (A) and disengage fixing pawls.

J
: Pawl

6. Separate heater & cooling unit case assembly.

JMIIA3384ZZ

M
7. Remove evaporator assembly from A/C unit case.
8. Remove mounting bolts, and then remove expansion valve from evaporator.
INSTALLATION N
Note the following items, and then install in the reverse order of removal.
CAUTION:
• Replace O-rings with new ones. Then apply compressor oil to them when installing. O
• Perform lubricant adjusting procedure after installing new evaporator. Refer to HA-66, "Lubricant
Adjusting Procedure for Components Replacement Except Compressor".
HEATER CORE
P
HEATER CORE : Removal and Installation INFOID:0000000010707905

REMOVAL
1. Remove A/C unit assembly. Refer to HA-182, "A/C UNIT ASSEMBLY : Removal and Installation".
2. Remove foot duct LH. Refer to VTL-15, "FOOT DUCT : Removal and Installation".

HA-185
A/C UNIT ASSEMBLY
< REMOVAL AND INSTALLATION > [TYPE 4]
3. Remove fixing screws (A), and then remove heater pipe cover.

JMIIA3386ZZ

4. Remove heater pipe packing.

5. Disengage fixing pawl, and then remove heater pipe clamp.

: Pawl

JMIIA3387ZZ

6. Remove heater core from A/C unit assembly.

JMIIA3388ZZ

HA-187
SERVICE DATA AND SPECIFICATIONS (SDS)
< SERVICE DATA AND SPECIFICATIONS (SDS) [TYPE 4]

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)
Compressor INFOID:0000000010707911

Lubricant INFOID:0000000010707912

Name ND-OIL8
Total in system 110 (3.9)
Capacity
m (Imp fl oz) Compressor (service part) charging
110 (3.9)
amount

Refrigerant INFOID:0000000010707913

Type HFC-134a (R-134a)

Capacity
0.5 (1.1)
kg (lb)

Engine Idling Speed INFOID:0000000010707914

Refer to ECK-405, "Idle Speed" (K9K engine models) or EC9-411, "Idle Speed" (R9M engine models).
Belt Tension INFOID:0000000010707915

Refer to EM-352, "Drive Belt" (K9K engine models) or EM-472, "Drive Belts" (R9M engine models).

HA-188

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