Nissan Murano Z50 (2006 year). Manual - part 2

 

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Nissan Murano Z50 (2006 year). Manual - part 2

 

 

ADJUSTABLE PEDAL SYSTEM

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Check Pedal Adjusting Control Unit Power Supply and Ground

NIS001GX

1. 

CHECK PEDAL ADJUSTING CONTROL UNIT POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect pedal adjusting control unit connector.

3.

Check voltage between pedal adjusting control unit connector
M88 terminal 5 and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace the harness between pedal adjusting

control unit and BCM.

2. 

CHECK PEDAL ADJUSTING CONTROL UNIT GROUND CIRCUIT

Check continuity between pedal adjusting control unit connector
M88 terminal 1 and ground.

OK or NG

OK >> GO 

TO 

2.

NG

>> Repair or replace harness between pedal adjusting con-

trol unit and ground.

3. 

CHECK PEDAL ADJUSTING CONTROL UNIT OUTPUT POWER SUPPLY

1.

Connect pedal adjusting control unit connector.

2.

Check voltage between pedal adjusting control unit connector
M88 terminal 7 and ground.

OK or NG

OK

>> Pedal adjusting control unit power supply and ground is

OK.

NG

>> Replace pedal adjusting control unit.

5 (W/R) - Ground

: Battery voltage

PIIA7662E

1 (B) - Ground

: Continuity should exist.

PIIA7663E

7 (R) - Ground

: Battery voltage

PIIA7661E

AP-12

ADJUSTABLE PEDAL SYSTEM

Revision: 2006 August

2006 Murano

Check Key Switch and CVT Device Circuit (Without Intelligent Key)

NIS001GY

1. 

CHECK FUSE

Check 10A fuse [No. 21, located in fuse block (J/B)]
NOTE:
Refer to 

AP-3, "Component Parts and Harness Connector Location"

 .

OK or NG

OK

>> GO TO 2.

NG 

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to 

PG-

3, "POWER SUPPLY ROUTING CIRCUIT"

 .

2. 

CHECK PEDAL ADJUSTING CONTROL UNIT INPUT SIGNAL

1.

Disconnect pedal adjusting control unit connector.

2.

Key is inserted in ignition key cylinder.

3.

Check voltage between pedal adjusting control unit connector
and ground.

OK or NG

OK

>> Key switch and CVT device circuit is OK.

NG

>> GO TO 3.

3. 

CHECK KEY SWITCH POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Key is removed from ignition key cylinder.

3.

Check voltage between key switch connector M28 terminal 3
and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness between key switch and fuse.

4. 

CHECK KEY SWITCH

Check continuity between key switch as follows.

OK or NG

OK

>> GO TO 5.

NG

>> Replace key switch.

Connector

Terminal (Wire color)

Condition

Voltage (V)

(Approx.)

(+)

(-)

M88

3 (L)

Ground

P-position

0

Other than P-position.

Battery voltage

PIIA7664E

3 (Y/R) - Ground

: Battery voltage.

PIIB4730E

Terminals

Condition

Continuity

3

4

Key is inserted in ignition key cylinder.

Yes

Key is removed from ignition key cylinder.

No

PIIA3044E

ADJUSTABLE PEDAL SYSTEM

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5. 

CHECK CVT DEVICE POWER SUPPLY CIRCUIT

1.

Disconnect CVT device connector.

2.

Connect key switch connector.

3.

Key is inserted in ignition key cylinder.

4.

Check voltage between CVT device connector M57 terminal 5
and ground.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 6.

6. 

CHECK CVT DEVICE HARNESS

1.

Key is removed from ignition key cylinder.

2.

Disconnect key switch connector.

3.

Check continuity between CVT device connector M57 terminal 5
and key switch connector M28 terminal 4.

4.

Check continuity between CVT device connector M57 terminal 5
and ground.

OK or NG

OK 

>> Check the condition the harness and connector.

NG

>> Repair or replace harness between key switch and CVT device connector.

7. 

CHECK CVT DEVICE

Check continuity between CVT device as follows.

OK or NG

OK

>> GO TO 8.

NG

>> Replace CVT device.

5 (B/R) - Ground

: Battery voltage.

PIIA8451E

5 (B/R) - 4 (B/R)

: Continuity should exist.

5 (B/R) - Ground

: Continuity should not exist.

PIIB4731E

Terminals

Condition

Continuity

5

6

P-position.

No

Other than P-position.

Yes

PIIA4566E

AP-14

ADJUSTABLE PEDAL SYSTEM

Revision: 2006 August

2006 Murano

8. 

CHECK PEDAL ADJUSTING CONTROL UNIT HARNESS 

1.

Disconnect pedal adjusting control unit connector.

2.

Connect key switch connector.

3.

Check voltage between CVT device connector M57 terminal 6
and pedal adjusting control unit connector M88 terminal 3.

4.

Check voltage between CVT device connector M57 terminal 6
and ground.

OK or NG

OK

>> Check the condition of the harness and connector.

NG

>> Repair or replace harness between CVT device and pedal adjusting control unit.

Check Key Switch and CVT Device Circuit (With Intelligent Key)

NIS001GZ

1. 

CHECK FUSE

Check 10A fuse [No. 22, located in fuse block (J/B)]
NOTE:
Refer to 

AP-3, "Component Parts and Harness Connector Location"

 .

OK or NG

OK

>> GO TO 2.

NG 

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to 

PG-

3, "POWER SUPPLY ROUTING CIRCUIT"

 .

2. 

CHECK PEDAL ADJUSTING CONTROL UNIT INPUT SIGNAL

1.

Disconnect pedal adjusting control unit connector.

2.

Key is inserted in ignition key cylinder.

3.

Check voltage between pedal adjusting control unit connector
and ground.

OK or NG

OK

>> Key switch and CVT device circuit is OK.

NG

>> GO TO 3.

3. 

CHECK KEY SWITCH POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Key is removed from ignition key cylinder.

3.

Check voltage between key switch and ignition knob switch con-
nector M118 terminal 3 and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness between key switch and igni-

tion knob switch and fuse.

6 (L) - 3 (L)

: Continuity should exist.

6 (L) - Ground

: Continuity should not exist.

PIIA8452E

Connector

Terminal (Wire color)

Condition

Voltage (V)

(Approx.)

(+)

(-)

M88

3 (L)

Ground

P-position

0

Other than P-position.

Battery voltage

PIIA7664E

3 (G/Y) - Ground

: Battery voltage.

PIIB3181E

ADJUSTABLE PEDAL SYSTEM

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4. 

CHECK KEY SWITCH

Check continuity between key switch and ignition knob switch as fol-
lows.

OK or NG

OK

>> GO TO 5.

NG

>> Replace key switch and ignition knob switch.

5. 

CHECK CVT DEVICE POWER SUPPLY CIRCUIT

1.

Disconnect CVT device connector.

2.

Connect key switch and ignition knob switch connector.

3.

Key is inserted in ignition key cylinder.

4.

Check voltage between CVT device connector M57 terminal 5
and ground.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 6.

6. 

CHECK CVT DEVICE HARNESS

1.

Key is removed from ignition key cylinder.

2.

Disconnect key switch and ignition knob switch connector.

3.

Check continuity between CVT device connector M57 terminal 5
and key switch and ignition knob switch connector M118 termi-
nal 4.

4.

Check continuity between CVT device connector M57 terminal 5
and ground.

OK or NG

OK 

>> Check the condition the harness and connector.

NG

>> Repair or replace harness between key switch and ignition knob switch and CVT device connec-

tor.

7. 

CHECK CVT DEVICE

Check continuity between CVT device as follows.

OK or NG

OK

>> GO TO 8.

NG

>> Replace CVT device.

Terminals

Condition

Continuity

3

4

Key is inserted in ignition key cylinder.

Yes

Key is removed from ignition key cylinder.

No

PIIB3182E

5 (B/Y) - Ground

: Battery voltage.

PIIA8451E

5 (B/Y) - 4 (B/R)

: Continuity should exist.

5 (B/Y) - Ground

: Continuity should not exist.

PIIB3183E

Terminals

Condition

Continuity

5

6

P-position.

No

Other than P-position.

Yes

PIIA4566E

AP-16

ADJUSTABLE PEDAL SYSTEM

Revision: 2006 August

2006 Murano

8. 

CHECK PEDAL ADJUSTING CONTROL UNIT HARNESS 

1.

Disconnect pedal adjusting control unit connector.

2.

Connect key switch and ignition knob switch connector.

3.

Check voltage between CVT device connector M57 terminal 6
and pedal adjusting control unit connector M88 terminal 3.

4.

Check voltage between CVT device connector M57 terminal 6
and ground.

OK or NG

OK

>> Check the condition of the harness and connector.

NG

>> Repair or replace harness between CVT device and pedal adjusting control unit.

Check Pedal Adjusting Switch Power Supply and Ground

NIS001H0

1. 

CHECK PEDAL ADJUSTING SWITCH POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect pedal adjusting switch connector.

3.

Check voltage between pedal adjusting switch connector B306
terminal 64 and ground.

OK

>> GO TO 3.

NG

>> GO TO 2.

2. 

CHECK PEDAL ADJUSTING SWITCH HARNESS

1.

Disconnect pedal adjusting control unit connector.

2.

Check continuity between pedal adjusting control unit connector
M88 terminal 7 and pedal adjusting switch connector B306 ter-
minal 64.

3.

Check continuity between pedal adjusting control unit connector
M88 terminal 7 and ground.

OK or NG

OK

>> Check the condition of the harness and connector.

NG

>> Repair or replace harness between pedal adjusting control unit and pedal adjusting switch.

6 (L) - 3 (L)

: Continuity should exist.

6 (L) - Ground

: Continuity should not exist.

PIIA8452E

64 (GY) - Ground

: Battery voltage.

PIIA7666E

7 (R) - 64 (GY)

: Continuity should exist.

7 (R) - Ground

: Continuity should not exist.

PIIA7667E

ADJUSTABLE PEDAL SYSTEM

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3. 

CHECK PEDAL ADJUSTING SWITCH GROUND CIRCUIT INSPECTION

Check continuity pedal adjusting switch connector B306 terminal
48C and ground.

OK or NG

OK

>> Pedal adjusting switch power supply and ground circuit

is OK.

NG

>> Repair or replace the harness between pedal adjusting

switch and ground.

Check Pedal Adjusting Motor Circuit

NIS001H1

1. 

CHECK PEDAL ADJUSTING SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect pedal adjusting switch connector.

3.

Check continuity between pedal adjusting switch as follows.

OK or NG

OK

>> GO TO 2.

NG

>> Replace pedal adjusting switch.

2. 

CHECK PEDAL ADJUSTING MOTOR HARNESS

1.

Disconnect pedal adjusting motor connector.

2.

Check continuity between pedal adjusting switch connector
B306 terminal 15, 30 and pedal adjusting motor connector E113
terminal 1, 2.

3.

Check continuity between pedal adjusting switch connector
B306 terminal 15, 30 and ground.

OK or NG

OK

>> Pedal adjusting motor circuit is OK.

NG

>> Repair or replace harness between pedal adjusting switch and pedal adjusting motor.

48C (B) - Ground

: Continuity should exist.

PIIA7668E

Terminals

Condition

Continuity

30

64

pedal adjusting switch forward.

Yes

pedal adjusting switch neutral.

No

48C

pedal adjusting switch backward.

Yes

pedal adjusting switch neutral.

No

15

64

pedal adjusting switch backward.

Yes

pedal adjusting switch neutral.

No

48C

pedal adjusting switch forward.

Yes

pedal adjusting switch neutral.

No

PIIA7669E

15 (G/W) - 1 (L/Y)

: Continuity should exist.

30 (L/W) - 2 (L/R)

: Continuity should exist.

15 (G/W) - Ground

: Continuity should not exist.

30 (L/W) - Ground

: Continuity should not exist.

PIIB7811E

AP-18

ADJUSTABLE PEDAL SYSTEM

Revision: 2006 August

2006 Murano

Check CVT Device Circuit

NIS001H2

1. 

CHECK CVT DEVICE

1.

Turn ignition switch OFF.

2.

Disconnect CVT device connector.

3.

Check continuity between CVT device as follows.

OK or NG

OK

>> GO TO 2.

NG

>> Replace CVT device.

2. 

CHECK PEDAL ADJUSTING CONTROL UNIT HARNESS

1.

Disconnect pedal adjusting control unit connector.

2.

Connect key switch connector and key lock solenoid connector.

3.

Check voltage between CVT device connector M57 terminal 6
and ground.

OK or NG

OK

>> Replace pedal adjusting control unit.

NG

>> Repair or replace harness between CVT device and

pedal adjusting control unit.

Removal and Installation

NIS001H3

Refer to 

BR-9, "Removal and Installation"

 .

Terminals

Condition

Continuity

5

6

P-position.

No

Other than P-position.

Yes

PIIA4566E

6 (L) - Ground

: Continuity should not exist.

PIIB7812E

ATC-1

AUTOMATIC AIR CONDITIONER

J  AIR CONDITIONER

CONTENTS

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ATC

Revision: 2006 August

2006 Murano

AUTOMATIC AIR CONDITIONER

PRECAUTIONS .......................................................... 5

Precautions for Supplemental Restraint System 
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 5
Precautions Necessary for Steering Wheel Rotation 
After Battery Disconnect  .......................................... 5

OPERATION PROCEDURE  ................................. 5

Precautions for Procedures without Cowl Top Cover 

..... 6

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

..... 6

CONTAMINATED REFRIGERANT  ....................... 6

General Refrigerant Precautions .............................. 7
Precautions for Refrigerant Connection  ................... 8

ABOUT ONE-TOUCH JOINT ................................ 8
FEATURES OF NEW TYPE REFRIGERANT 
CONNECTION .................................................... 10
O-RING AND REFRIGERANT CONNECTION ....11

Precautions for Servicing Compressor ................... 13
Precautions for Service Equipment  ........................ 13

RECOVERY / RECYCLING EQUIPMENT .......... 13
ELECTRICAL LEAK DETECTOR  ....................... 13
VACUUM PUMP  ................................................. 13
MANIFOLD GAUGE SET .................................... 13
SERVICE HOSES  ............................................... 14
SERVICE COUPLERS ........................................ 14
REFRIGERANT WEIGHT SCALE  ...................... 14
CHARGING CYLINDER ...................................... 14

Precautions for Leak Detection Dye ....................... 15

IDENTIFICATION ................................................ 15
IDENTIFICATION LABEL FOR VEHICLE ........... 15

PREPARATION ......................................................... 16

Special Service Tools  ............................................. 16
HFC-134a (R-134a) Service Tools and Equipment 

... 17

Commercial Service Tools ...................................... 19

REFRIGERATION SYSTEM  ..................................... 20

Refrigerant Cycle  ................................................... 20

REFRIGERANT FLOW  ....................................... 20
FREEZE PROTECTION  ..................................... 20

Refrigerant System Protection  ............................... 20

REFRIGERANT PRESSURE SENSOR  ............. 20

PRESSURE RELIEF VALVE  ............................... 20

Component Layout  ................................................. 21

LUBRICANT .............................................................. 22

Maintenance of Lubricant Quantity in Compressor ... 22

LUBRICANT ........................................................ 22
LUBRICANT RETURN OPERATION  .................. 22
LUBRICANT ADJUSTING PROCEDURE FOR 
COMPONENTS REPLACEMENT EXCEPT 
COMPRESSOR .................................................. 23
LUBRICANT ADJUSTING PROCEDURE FOR 
COMPRESSOR REPLACEMENT ....................... 24

AIR CONDITIONER CONTROL  ............................... 25

Description of Air Conditioner LAN Control System ... 25
System Construction  .............................................. 25

OPERATION ........................................................ 25
TRANSMISSION DATA AND TRANSMISSION 
ORDER ............................................................... 26
AIR MIX DOOR CONTROL (AUTOMATIC TEM-
PERATURE CONTROL)  ..................................... 27
FAN SPEED CONTROL ...................................... 27
INTAKE DOOR CONTROL  ................................. 27
MODE DOOR CONTROL  ................................... 27
MAGNET CLUTCH CONTROL  ........................... 28
SELF-DIAGNOSIS SYSTEM  .............................. 28

Description of Control System  ................................ 29
Control Operation  ................................................... 29

DISPLAY SCREEN .............................................. 30
AUTO SWITCH  ................................................... 30
TEMPERATURE CONTROL DIAL (POTENTIO 
TEMPERATURE CONTROL) (DRIVER SIDE) ... 30
TEMPERATURE CONTROL DIAL (POTENTIO 
TEMPERATURE CONTROL) (PASSENGER 
SIDE) ................................................................... 30
RECIRCULATION (REC) SWITCH  ..................... 30
FRESH (FRE) SWITCH  ...................................... 30
DEFROSTER (DEF) SWITCH ............................. 30
REAR WINDOW DEFOGGER SWITCH  ............. 30
OFF SWITCH  ...................................................... 30
A/C SWITCH  ....................................................... 30
MODE SWITCH  .................................................. 30

ATC-2

Revision: 2006 August

2006 Murano

FAN CONTROL DIAL  .......................................... 30
DUAL SWITCH  .................................................... 30

Fail-safe Function  ................................................... 31
Discharge Air Flow  ................................................. 32
System Description ................................................. 33

SWITCHES AND THEIR CONTROL FUNCTION ... 33

CAN Communication System Description  .............. 34

TROUBLE DIAGNOSIS  ............................................ 35

CONSULT-II Function (BCM) .................................. 35

CONSULT-II BASIC OPERATION  ....................... 35
DATA MONITOR .................................................. 35

How to Perform Trouble Diagnosis for Quick and 
Accurate Repair  ...................................................... 36

WORK FLOW  ...................................................... 36
SYMPTOM TABLE  .............................................. 36

Component Parts and Harness Connector Location ... 37

ENGINE COMPARTMENT  .................................. 37
PASSENGER COMPARTMENT .......................... 38

Schematic ............................................................... 39
Wiring Diagram — A/C — ....................................... 40
Auto Amp. Terminals and Reference Value  ............ 45

PIN CONNECTOR TERMINAL LAYOUT  ............ 45
TERMINALS AND REFERENCE VALUE FOR 
UNIFIED METER AND A/C AMP. ........................ 45

Self-diagnosis Function  .......................................... 47

DESCRIPTION .................................................... 47
FUNCTION CONFIRMATION PROCEDURE ...... 48
AUXILIARY MECHANISM: TEMPERATURE 
SETTING TRIMMER  ........................................... 53
AUXILIARY MECHANISM: FOOT POSITION 
SETTING TRIMMER  ........................................... 54
AUXILIARY MECHANISM: INLET PORT MEM-
ORY FUNCTION  ................................................. 54

Operational Check  .................................................. 55

CHECKING MEMORY FUNCTION  ..................... 55
CHECKING BLOWER  ......................................... 55
CHECKING DISCHARGE AIR  ............................ 55
CHECKING INTAKE AIR  ..................................... 55
CHECKING TEMPERATURE DECREASE  ......... 55
CHECKING TEMPERATURE INCREASE  .......... 56
CHECK A/C SWITCH  .......................................... 56
CHECKING AUTO MODE  ................................... 56

Power Supply and Ground Circuit for Auto Amp. ... 57

INSPECTION FLOW  ........................................... 57
COMPONENT DESCRIPTION ............................ 57
DIAGNOSIS PROCEDURE FOR A/C SYSTEM ... 58

LAN System Circuit  ................................................ 59

DIAGNOSIS PROCEDURE FOR LAN CIRCUIT ... 59

Mode Door Motor Circuit  ........................................ 63

INSPECTION FLOW  ........................................... 63
SYSTEM DESCRIPTION  .................................... 64
COMPONENT DESCRIPTION ............................ 65
DIAGNOSIS PROCEDURE FOR MODE DOOR 
MOTOR ............................................................... 65

Air Mix Door Motor Circuit  ...................................... 66

INSPECTION FLOW  ........................................... 66
SYSTEM DESCRIPTION  .................................... 67
COMPONENT DESCRIPTION ............................ 68
DIAGNOSIS PROCEDURE FOR AIR MIX DOOR ... 68

Air Mix Door Motor PBR Circuit  ..............................68

DIAGNOSIS PROCEDURE FOR AIR MIX DOOR 
MOTOR PBR  .......................................................68

Intake Door Motor Circuit  ........................................69

INSPECTION FLOW ............................................69
SYSTEM DESCRIPTION .....................................70
COMPONENT DESCRIPTION  ............................71
DIAGNOSIS PROCEDURE FOR INTAKE DOOR 
MOTOR ................................................................71

Blower Motor Circuit ................................................72

INSPECTION FLOW ............................................72
SYSTEM DESCRIPTION .....................................73
COMPONENT DESCRIPTION  ............................74
DIAGNOSIS PROCEDURE FOR BLOWER 
MOTOR ................................................................74
COMPONENT INSPECTION ...............................76

Magnet Clutch Circuit ..............................................77

INSPECTION FLOW ............................................77
SYSTEM DESCRIPTION .....................................78
DIAGNOSIS PROCEDURE FOR MAGNET 
CLUTCH ..............................................................78
COMPONENT INSPECTION ...............................82

Insufficient Cooling ..................................................83

INSPECTION FLOW ............................................83
PERFORMANCE TEST DIAGNOSIS ..................85
PERFORMANCE CHART ....................................87
TROUBLE DIAGNOSIS FOR UNUSUAL PRES-
SURE ...................................................................88

Insufficient Heating  .................................................91

INSPECTION FLOW ............................................91

Noise .......................................................................92

INSPECTION FLOW ............................................92

Self-diagnosis .........................................................93

INSPECTION FLOW ............................................93

Memory Function  ....................................................94

INSPECTION FLOW ............................................94

Ambient Sensor Circuit  ...........................................95

COMPONENT DESCRIPTION  ............................95
AMBIENT TEMPERATURE INPUT PROCESS ...95
DIAGNOSIS PROCEDURE FOR AMBIENT 
SENSOR ..............................................................95
COMPONENT INSPECTION ...............................97

In-vehicle Sensor Circuit  .........................................98

COMPONENT DESCRIPTION  ............................98
DIAGNOSIS PROCEDURE FOR IN-VEHICLE 
SENSOR ..............................................................99
COMPONENT INSPECTION .............................100

Sunload Sensor Circuit  .........................................101

COMPONENT DESCRIPTION  ..........................101
SUNLOAD INPUT PROCESS  ...........................101
DIAGNOSIS PROCEDURE FOR SUNLOAD 
SENSOR ............................................................101
COMPONENT INSPECTION .............................103

Intake Sensor Circuit .............................................104

COMPONENT DESCRIPTION  ..........................104
DIAGNOSIS PROCEDURE FOR INTAKE SEN-
SOR ...................................................................104
COMPONENT INSPECTION .............................105

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CONTROLLER ....................................................... 106

Removal and Installation of A/C and AV Switch ... 106

REMOVAL ......................................................... 106
INSTALLATION ................................................. 106

AUTO AMP  ............................................................. 107

Removal and Installation of Unified Meter and A/C 
Amp. ..................................................................... 107

REMOVAL ......................................................... 107
INSTALLATION ................................................. 107

AMBIENT SENSOR ................................................ 108

Removal and Installation  ...................................... 108

REMOVAL ......................................................... 108
INSTALLATION ................................................. 108

IN-VEHICLE SENSOR ............................................ 109

Removal and Installation  ...................................... 109

REMOVAL ......................................................... 109
INSTALLATION ................................................. 109

SUNLOAD SENSOR  ...............................................110

Removal and Installation  .......................................110

REMOVAL ..........................................................110
INSTALLATION ..................................................110

INTAKE SENSOR  .................................................... 111

Removal and Installation  ....................................... 111

REMOVAL .......................................................... 111
INSTALLATION .................................................. 111

BLOWER UNIT  ........................................................112

Removal and Installation  .......................................112

REMOVAL ..........................................................112
INSTALLATION ..................................................112

Disassembly and Assembly  ..................................113
Removal and Installation of Blower Duct  ..............114

REMOVAL ..........................................................114
INSTALLATION ..................................................114

BLOWER MOTOR  ...................................................115

Removal and Installation  .......................................115

REMOVAL ..........................................................115
INSTALLATION ..................................................115

INTAKE DOOR MOTOR  ..........................................116

Removal and Installation  .......................................116

REMOVAL ..........................................................116
INSTALLATION ..................................................116

IN-CABIN MICROFILTER ........................................117

Removal and Installation  .......................................117

FUNCTION .........................................................117
REPLACEMENT TIMING ...................................117
REPLACEMENT PROCEDURES ......................117

HEATER & COOLING UNIT ASSEMBLY  ...............118

Removal and Installation  .......................................118

REMOVAL ..........................................................118
INSTALLATION ..................................................119

Disassembly and Assembly  ................................. 120

MODE DOOR MOTOR  ........................................... 122

Removal and Installation  ...................................... 122

REMOVAL ......................................................... 122
INSTALLATION ................................................. 122

AIR MIX DOOR MOTOR ......................................... 123

Removal and Installation  ...................................... 123

REMOVAL ......................................................... 123
INSTALLATION ................................................. 123

HEATER CORE ....................................................... 124

Removal and Installation  ...................................... 124

REMOVAL ......................................................... 124
INSTALLATION ................................................. 124

DUCTS AND GRILLES ........................................... 125

Removal and Installation  ...................................... 125

COMPONENT LAYOUT  .................................... 125
REMOVAL ......................................................... 125
INSTALLATION ................................................. 130

REFRIGERANT LINES  ........................................... 131

HFC-134a (R-134a) Service Procedure  ............... 131

SETTING OF SERVICE TOOLS AND EQUIP-
MENT ................................................................ 131

Components ......................................................... 133
Removal and Installation of Compressor .............. 134

REMOVAL ......................................................... 134
INSTALLATION ................................................. 134

Check Disc to Pulley Clearance  ........................... 135
Removal and Installation of Low-pressure Flexible 
Hose ..................................................................... 135

REMOVAL ......................................................... 135
INSTALLATION ................................................. 135

Removal and Installation of High-pressure Flexible 
Hose ..................................................................... 136

REMOVAL ......................................................... 136
INSTALLATION ................................................. 136

Removal and Installation of Low-pressure Pipe 1 
(Engine Compartment)  ......................................... 137

REMOVAL ......................................................... 137
INSTALLATION ................................................. 137

Removal and Installation of High-pressure Pipe 1 
(Engine Compartment)  ......................................... 138

REMOVAL ......................................................... 138
INSTALLATION ................................................. 138

Removal and Installation of Low-pressure Pipe 2 
and High-pressure Pipe 2 ..................................... 139

REMOVAL ......................................................... 139
INSTALLATION ................................................. 140

Removal and Installation of Liquid Tank  ............... 140

REMOVAL ......................................................... 140
INSTALLATION ................................................. 141

Removal and Installation of Condenser ................ 141

REMOVAL ......................................................... 141
INSTALLATION ................................................. 142

Removal and Installation of Refrigerant Pressure 
Sensor .................................................................. 142

REMOVAL ......................................................... 142
INSTALLATION ................................................. 142

Removal and Installation of Evaporator ................ 142

REMOVAL ......................................................... 142
INSTALLATION ................................................. 143

Removal and Installation of Expansion Valve ....... 143

REMOVAL ......................................................... 143
INSTALLATION ................................................. 143

Checking for Refrigerant Leaks  ............................ 144
Checking System for Leaks Using the Fluorescent 
Leak Detector  ....................................................... 144

PRECAUTIONS

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PRECAUTIONS

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Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT 
BELT PRE-TENSIONER”

NJS000A2

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.

WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.

Precautions Necessary for Steering Wheel Rotation After Battery Disconnect

NJS000CQ

NOTE:

This Procedure is applied only to models with Intelligent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).

Remove and install all control units after disconnecting both battery cables with the ignition knob in the

LOCK

 position.

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

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

OPERATION PROCEDURE

1.

Connect both battery cables.

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

2.

Use the Intelligent Key or mechanical key to turn the ignition switch to the 

ACC

 position. At this time, the

steering lock will be released.

3.

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

4.

Perform the necessary repair operation.

5.

When the repair work is completed, return the ignition switch to the 

LOCK

 position before connecting

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

6.

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

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Precautions for Procedures without Cowl Top Cover

NJS000CR

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

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

NJS000A3

CAUTION:

CFC-12 (R-12) refrigerant and HFC-134a (R-134a) refrigerant are not compatible. If the refrigerants
are mixed and compressor malfunction is likely to occur, refer to “CONTAMINATED REFRIGER-
ANT” below. To determine the purity of HFC-134a (R-134a) in the vehicle and recovery tank, use
Refrigerant Recovery/Recycling Recharging equipment and Refrigerant Identifier.

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

The specified HFC-134a (R-134a) lubricant rapidly absorbs moisture from the atmosphere. The fol-
lowing handling precautions must be observed:

When removing refrigerant components from a vehicle, immediately cap (seal) the component to
minimize the entry of moisture from the atmosphere.

When installing refrigerant components to a vehicle, never remove the caps (unseal) until just
before connecting the components. Connect all refrigerant loop components as quickly as possi-
ble to minimize the entry of moisture into system.

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

Never allow lubricant (Nissan A/C System Oil Type S) to come in contact with styrene foam parts.
Damage may result.

CONTAMINATED REFRIGERANT

If a refrigerant other than pure HFC-134a (R-134a) is identified in a vehicle, take appropriate steps
shown below:

Explain to the customer that environmental regulations prohibit the release of contaminated refrigerant
into the atmosphere.

Explain that recovery of the contaminated refrigerant could damage service equipment and refrigerant
supply.

Suggest the customer return the vehicle to the location of previous service where the contamination may
have occurred.

In case of repairing, recover the refrigerant using only dedicated equipment and containers. Never
recover contaminated refrigerant into the existing service equipment.
   If the facility does not have
dedicated recovery equipment, contact a local refrigerant product retailer for available service. This refrig-
erant 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.

If the vehicle is within the warranty period, the air conditioner warranty is void. Please contact Nissan Cus-
tomer Affairs for further assistance.

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General Refrigerant Precautions

NJS000A4

WARNING:

Avoid breathing 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 meet-
ing requirements of SAEJ-2210 [HFC-134a (R-134a) recycling equipment], or J-2209 [HFC-134a (R-
134a) recovery equipment]. If accidental system discharge occurs, ventilate work area before
resuming service. Additional health and safety information may be obtained from refrigerant and
lubricant manufacturers.

Never release refrigerant into the air. Use approved recovery/recycling equipment to capture the
refrigerant every time an air conditioning system is discharged.

Always wear eye and hand protection (goggles and gloves) when working with any refrigerant or
air conditioning system.

Never store or heat refrigerant containers above 52

°

C (126

°

F).

Never heat a refrigerant container with an open flame; if container warming is required, place the
bottom of the container in a warm pail of water.

Never intentionally drop, puncture, or incinerate refrigerant containers.

Keep refrigerant away from open flames: poisonous gas will be produced if refrigerant burns.

Refrigerant will displace oxygen, therefore be certain to work in well ventilated areas to prevent
suffocation.

Never pressure test or leak test HFC-134a (R-134a) service equipment and/or vehicle air condition-
ing 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 refrigerant
manufacturers.

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Precautions for Refrigerant Connection

NJS000A6

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

Expansion valve to evaporator

Refrigerant pressure sensor to condenser

ABOUT ONE-TOUCH JOINT
Description

One-touch joints are pipe joints which do not require tools during piping connection.

Unlike conventional connection methods using union nuts and flanges, controlling tightening torque at
connection point is not necessary.

When removing a pipe joint, use a disconnector.

COMPONENT PARTS

FUNCTIONS OF COMPONENT PARTS

NOTE:

Garter spring (2) cannot be removed from cage (A) of male-side piping.

Indicator ring (3) remains near piping connection point, however, this is not a malfunction. (This is to
check piping connection during factory assembly.)

1

Pipe (Male side)

Retains O-rings (4).

Retains garter spring (2) in cage (A).

2

Garter spring

Anchors female side piping (5).

3

Indicator ring

When connection is made properly, this is ejected from male-side piping (1). (This part is no longer 
necessary after connection.)

4

O-ring

Seals connection point. (Not reusable)

5

Pipe (Female side)

Seals connection by compressing O-rings (4).

Anchors piping connection using flare (B) and garter spring (2).

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