2001 NISSAN X-TRAIL Line pressure

TROUBLE DIAGNOSIS
BRC-93
[ESP/TCS/ABS]
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3.CHECK WHEEL SENSOR CIRCUIT
1. Disconnect connectors of the ESP/TCS/ABS control unit and
wheel sensors.
2. Check for continuity among the ESP/TCS/ABS control unit
(vehicle-side connector B111) and wheel sensors (vehicle-side
connector E59, E17, B129 and B130), body grand.
Is inspection result OK?
YES >> GO TO 4
NO >> Repair harness and connector between the control unit and the wheel sensor.
4.INSPECTION THE TIRE
Check the tire pressure, wear, size.
Check if the pressure, wear, and size are in range of the standard?
YES >> GO TO 5
NO >> Adjusting tire pressure, and replace tire.
SFIA0914E
ESP/TCS/ABS control unit
(vehicle-side connector B111)Wheel sensor
(Vehicle-side connector E59,
E17, B129 and B130)Continuity (Resistance)
Front RH15 (W) 1 (W)
Yes (0 - 0.5Ω)
16 (B) 2 (B)
Front LH8 (Y) 1 (Y)
Yes (0 - 0.5Ω)
10 (G) 2 (G)
Rear RH11 ( Y ) 2 ( Y )
Yes (0 - 0.5Ω)
12 (BR) 1 (BR)
Rear LH13 (L) 2 (L)
Yes (0 - 0.5Ω)
14 (B/W) 1 (B/W)
ESP/TCS/ABS control unit
(vehicle-side connector B111)Body ground Continuity
Grand line28 (B) —
Ye s
29 (B) —

PS-1
POWER STEERING SYSTEM
G STEERING
CONTENTS
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SECTION
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PS
POWER STEERING SYSTEM
PRECAUTIONS .......................................................... 2
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 2
Caution ..................................................................... 2
PREPARATION ........................................................... 3
Special Service Tools ............................................... 3
NOISE, VIBRATION, AND HARSHNESS (NVH)
TROUBLESHOOTING ................................................ 4
NVH Trouble shooting Chart .................................... 4
POWER STEERING FLUID ........................................ 5
Checking Fluid Level ........................................... ..... 5
Checking Fluid Leak ............................................ ..... 5
Bleeding Hydraulic System ...................................... 5
STEERING WHEEL .................................................... 6
On-Vehicle Inspection and Service .......................... 6
PLAY INSPECTION .............................................. 6
NEUTRAL POSITION INSPECTION .................... 6
STEERING TORQUE CHECK .............................. 6
STEERING ANGLE INSPECTION ........................ 6
Removal and Installation .......................................... 7
REMOVAL ............................................................. 7
INSTALLATION ..................................................... 7
STEERING COLUMN ................................................. 9
Removal and Installation .......................................... 9
REMOVAL OF LOWER JOINT AND HOLE
COVER ................................................................. 9
INSTALLATION OF LOWER JOINT AND HOLE
COVER ................................................................. 9
REMOVAL OF STEERING COLUMN ASSEM-
BLY ...................................................................... 10
INSTALLING STEERING COLUMN ASSEMBLY ... 10
Disassembly and Assembly .................................... 11
DISASSEMBLY .................................................... 11
INSPECTION AFTER DISASSEMBLY. ............... 11
ASSEMBLY .......................................................... 11
POWER STEERING GEAR AND LINKAGE ............ 12
Removal and Installation ........................................ 12
REMOVAL ........................................................... 12INSTALLATION ................................................... 12
Components ........................................................... 14
MODEL PR24AD ................................................. 14
Disassembly and Assembly .................................... 15
DISASSEMBLY ................................................... 15
INSPECTION AFTER DISASSEMBLY ................ 16
ASSEMBLY ......................................................... 17
POWER STEERING OIL PUMP ............................... 24
On-Vehicle Inspection and Service ......................... 24
OIL PUMP PULLEY HYDRAULIC PRESSURE
INSPECTION ...................................................... 24
Removal and Installation (QR20DE and QR25DE
engine models) ....................................................... 24
REMOVAL ........................................................... 24
INSTALLATION ................................................... 24
Disassembly and Assembly(QR20DE and
QR25DE engine models) ........................................ 25
INSPECTION BEFORE DISASSEMBLY ............. 25
DISASSEMBLY ................................................... 25
INSPECTION AFTER DISASSEMBLY ................ 26
ASSEMBLY ......................................................... 26
Removal and Installation (YD22DDTi engine
model) ..................................................................... 29
Disassembly and Assembly (YD22DDTi engine
model) ..................................................................... 30
INSPECTION BEFORE DISASSEMBLY ............. 30
DISASSEMBLY ................................................... 31
INSPECTION AFTER DISASSEMBLY ................ 32
ASSEMBLY ......................................................... 32
HYDRAULIC LINE .................................................
... 34
Removal and Installation ........................................ 34
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 36
Wheel ..................................................................... 36
Steering Angle ........................................................ 36
Steering Column ..................................................... 36
Steering Linkage ..................................................... 36
Steering Gear ......................................................... 37
Oil Pump ................................................................. 37
Steering Fluid .......................................................... 37

SB-10
SEAT BELT WARNING SYSTEM
Terminal and Reference Value for Time Control Unit
EHS000H3
NOTE:
*1: When seat pressure switch is ON.
*2: Wire color is different depending on vehicle. Each wire color are as follows:
Symptom ChartEHS000GS
TERMINALWIRE
COLORITEM CONDITION VOLTAGE (V)
8W/BSeat belt warning lamp
(driver side) signalSeat belt warning lamp (driver
side) is illuminated.0
Seat belt warning lamp (driver
side) is not illuminated.Battery voltage
15 W/GSeat belt warning lamp
(passenger side) signalSeat belt warning lamp (passen-
ger side) is illuminated.0
Seat belt warning lamp (passen-
ger side) is not illuminated.Battery voltage
21 BR/WSeat belt buckle switch
(driver side) signalSeat belt buckle switch (driver
side) is unfastened.0
Seat belt buckle switch (driver
side) is fastened.Battery voltage
22 G/ORSeat belt buckle switch
(passenger side) signalSeat belt buckle switch (passen-
ger side) is unfastened.*10
Seat belt buckle switch (passen-
ger side) is fastened.*1Battery voltage
36 *2 Vehicle speed signal When the vehicle speed is
approx. 40km (25MPH).
Vehicle Wire color
A/T models L/W
M/T models with gasoline engine L/Y
Diesel engine models L/B
ELF1080D
Symptom Diagnoses/Service procedure Reference page
Seat belt warning lamp (driver side) is not
illuminated.Seat belt warning lamp inspection (driver side)SB-11
Seat belt buckle switch inspection (driver side)SB-14
If the above system are normal, replace time control unit. —
Seat belt warning lamp (passenger side) is
not illuminated.Seat belt warning lamp inspection (passenger side)SB-13
Seat belt buckle switch inspection (passenger side)SB-15
Seat pressure switch inspectionSB-16
If the above system are normal, replace time control unit. —
Seat belt chime does not activate.(Seat belt
warning lamp is operated)Vehicle speed signal inspectionSB-18
If the above system is normal, replace time control unit —

ATC-1
AUTOMATIC AIR CONDITIONER
J AIR CONDITIONER
CONTENTS
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SECTION
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AUTOMATIC AIR CONDITIONER
PRECAUTIONS .......................................................... 4
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 4
Precautions for Working with HFC-134a (R-134a) ..... 4
General Refrigerant Precautions .............................. 5
Lubricant Precautions .............................................. 5
Precautions for Refrigerant Connection ................... 5
FEATURES OF NEW TYPE REFRIGERANT
CONNECTION ...................................................... 6
O-RING AND REFRIGERANT CONNECTION ..... 7
Precautions for Servicing Compressor ..................... 9
Precautions for Service Equipment ........................ 10
RECOVERY/RECYCLING EQUIPMENT ............ 10
ELECTRONIC LEAK DETECTOR ...................... 10
VACUUM PUMP ................................................. 10
MANIFOLD GAUGE SET .................................... 10
SERVICE HOSES ................................................ 11
SERVICE COUPLERS ......................................... 11
REFRIGERANT WEIGHT SCALE ....................... 11
CALIBRATING ACR4 WEIGHT SCALE ............... 11
CHARGING CYLINDER ...................................... 12
Precautions for Leak Detection Dye ....................... 12
IDENTIFICATION ................................................ 12
IDENTIFICATION LABEL FOR VEHICLE ........... 13
Wiring Diagrams and Trouble Diagnosis ................ 13
PREPARATION ......................................................... 14
Special Service Tools ............................................. 14
WITH GASOLINE ENGINE (CWV-615M COM-
PRESSOR) ......................................................... 14
WITH DIESEL ENGINE (DKV-11G COMPRES-
SOR) ................................................................... 14
HFC-134a (R-134a) Service Tools and Equipment ... 15
REFRIGERATION SYSTEM ..................................... 18
Refrigerant Cycle ................................................... 18
REFRIGERANT FLOW ....................................... 18
FREEZE PROTECTION (WITH GASOLINE
ENGINE: CWV-615M COMPRESSOR) .............. 18
Refrigerant System Protection ............................... 18
REFRIGERANT PRESSURE SENSOR (WITH GASOLINE ENGINE: CWV-615M COMPRES-
SOR) ................................................................... 18
DUAL-PRESSURE SWITCH (WITH DIESEL
ENGINE: DKV-11G COMPRESSOR) .................. 18
PRESSURE RELIEF VALVE (WITH GASOLINE
ENGINE: CWV-615M COMPRESSOR) .............. 18
V-6 Variable Displacement Compressor (With Gas-
oline Engine: CWV-615M Compressor) .................. 19
GENERAL INFORMATION ................................. 19
DESCRIPTION .................................................... 20
Component Layout ................................................. 23
LUBRICANT .............................................................. 24
Maintenance of Lubricant Quantity in Compressor ... 24
LUBRICANT ........................................................ 24
LUBRICANT RETURN OPERATION .................. 24
LUBRICANT ADJUSTING PROCEDURE FOR
COMPONENTS REPLACEMENT EXCEPT
COMPRESSOR .................................................. 25
LUBRICANT ADJUSTING PROCEDURE FOR
COMPRESSOR REPLACEMENT ....................... 25
AIR CONDITIONER CONTROL ............................... 27
Overview Air Conditioner LAN Control System ...... 27
System Construction .............................................. 27
OPERATION ........................................................ 27
TRANSMISSION DATA AND TRANSMISSION
ORDER ............................................................... 28
AIR MIX DOOR CONTROL (AUTOMATIC TEM-
PERATURE CONTROL) ..................................... 28
FAN SPEED CONTROL ...................................... 29
INTAKE DOOR CONTROL ................................. 29
OUTLET DOOR CONTROL ................................ 29
MAGNET CLUTCH CONTROL ........................... 29
SELF-DIAGNOSTIC SYSTEM ............................ 29
Overview of Control system .................................... 29
Control Operation ................................................... 30
DISPLAY SCREEN .............................................. 30
AUTO SWITCH ................................................... 30
TEMPERATURE DIAL (POTENTIO TEMPERA-
TURE CONTROL) ............................................... 30
A/C SWITCH ....................................................... 30

ATC-3
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AT C Removal and Installation ....................................... 116
REMOVAL .......................................................... 116
INSTALLATION .................................................. 116
Disassembly and Assembly .................................. 117
BLOWER MOTOR ...................................................118
Removal and Installation ....................................... 118
INTAKE DOOR MOTOR ..........................................119
Removal and Installation ....................................... 119
FAN CONTROL AMPLIFIER .................................. 120
Removal and Installation ...................................... 120
VENTILATION AIR FILTER .................................... 121
Removal and Installation ...................................... 121
FUNCTION ........................................................ 121
REPLACEMENT TIMING .................................. 121
REPLACEMENT AND PROCEDURES ............ 121
CLEANING ....................................................... . 121
HEATER & COOLING UNIT ASSEMBLY .............. 122
Removal and Installation ...................................... 122
REMOVAL ......................................................... 122
INSTALLATION ................................................. 123
Disassembly and Assembly ................................. 123
MODE DOOR MOTOR ........................................... 124
Removal and Installation ...................................... 124
AIR MIX DOOR MOTOR ......................................... 125
Removal and Installation ...................................... 125
HEATER CORE ...................................................... 126
Removal and Installation ...................................... 126
DUCTS AND GRILLES .......................................... 127
Removal and Installation ...................................... 127
VENTILATOR DUCT, DEFROSTER NOZZLE
AND DEFROSTER DUCTS .............................. 127
CENTER VENTILATOR GRILLE ...................... 127
SIDE VENTILATOR GRILLE ............................. 127
FOOT DUCT ..................................................... 128
FLOOR DUCT ................................................... 128
REFRIGERANT LINES ........................................... 129
HFC-134a (R-134a) Service Procedure ............... 129
SETTING OF SERVICE TOOLS AND EQUIP-
MENT ................................................................ 129
Components ......................................................... 131
WITH GASOLINE ENGINE ............................... 131
WITH DIESEL ENGINE .................................... 132
Removal and Installation for Compressor ............ 132REMOVAL .........................................................132
INSTALLATION .................................................134
Removal and Installation for Compressor Clutch . 135
REMOVAL .........................................................135
INSTALLATION .................................................138
Removal and Installation for Low-pressure flexible
hose ......................................................................141
REMOVAL .........................................................141
INSTALLATION .................................................141
Removal and Installation for High-pressure flexible
hose ......................................................................142
REMOVAL .........................................................142
INSTALLATION .................................................142
Removal and Installation for High-pressure pipe ..142
REMOVAL .........................................................142
INSTALLATION .................................................142
Removal and Installation for Refrigerant Pressure
Sensor ..................................................................143
Removal and Installation for Dual-pressure Switch .143
Removal and Installation for Condenser ..............143
REMOVAL .........................................................143
INSTALLATION .................................................144
Removal and Installation for Evaporator ..............145
REMOVAL .........................................................145
INSTALLATION .................................................145
Removal and Installation for Expansion Valve ......146
Removal and Installation for Liquid Tank ..............146
REMOVAL .........................................................146
INSTALLATION .................................................146
Checking for Refrigerant Leaks ............................146
Checking System for Leaks Using the Fluorescent
Leak Detector .......................................................147
Dye Injection .........................................................147
Electronic Refrigerant Leak Detector ....................147
PRECAUTIONS FOR HANDLING LEAK
DETECTOR .......................................................147
CHECKING PROCEDURE ...............................148
SERVICE DATA AND SPECIFICATIONS (SDS) ....150
COMPRESSOR ....................................................150
LUBRICANT .........................................................150
REFRIGERANT ....................................................150
ENGINE IDLING SPEED ......................................150
BELT TENSION ................................................... .150

PRECAUTIONS
ATC-5
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General Refrigerant PrecautionsEJS000T2
WARNING:
●Do not release refrigerant into the air. Use approved recovery/recycling equipment to capture the
refrigerant every time an air conditioning system is discharged.
●Always wear eye and hand protection (goggles and gloves) when working with any refrigerant or
air conditioning system.
●Do not store or heat refrigerant containers above 52°C (125°F).
●Do not heat a refrigerant container with an open flame; if container warming is required, place the
bottom of the container in a warm pail of water.
●Do not intentionally drop, puncture, or incinerate refrigerant containers.
●Keep refrigerant away from open flames: poisonous gas will be produced if refrigerant burns.
●Refrigerant will displace oxygen, therefore be certain to work in well ventilated areas to prevent
suffocation.
●Do not pressure test or leak test HFC-134a (R-134a) service equipment and/or vehicle air 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.
Lubricant PrecautionsEJS0027Y
●Use only specified lubricant for the HFC-134a (R-134a) A/C system and HFC-134a (R-134a) components.
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 following
handling precautions must be observed:
●When removing refrigerant components from a vehicle, immediately cap (seal) the component to minimize
the entry of moisture from the atmosphere.
●When installing refrigerant components to a vehicle, do not remove the caps (unseal) until just before con-
necting the components. Connect all refrigerant loop components as quickly as possible to minimize the
entry of moisture into system.
●Only use the specified lubricant from a sealed container. Immediately reseal containers of lubricant. With-
out proper sealing, lubricant will become moisture saturated and should not be used.
●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 meeting require-
ments of SAE J2210 HFC-134a (R-134a) recycling equipment, or J2209 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.
●Do not allow lubricant (Nissan A/C System Oil Type S or R) to come in contact with styrofoam parts. Dam-
age may result.
Precautions for Refrigerant ConnectionEJS000T4
A new type refrigerant connection has been introduced to all refrigerant lines except the following location.
●Expansion valve to cooling unit
●Refrigerant pressure sensor to liquid tank

PRECAUTIONS
ATC-9
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CAUTION:
When replacing or cleaning refrigerant cycle components, observe the following.
●When the compressor is removed, store it in the same position as it is when mounted on the car.
Malfunction to do so will cause lubricant to enter the low pressure chamber.
●When connecting tubes, always use a torque wrench and a back-up wrench.
●After disconnecting tubes, immediately plug all openings to prevent entry of dirt and moisture.
●When installing an air conditioner in the vehicle, connect the pipes as the final stage of the opera-
tion. Do not remove the seal caps of pipes and other components until just before required for
connection.
●Allow components stored in cool areas to warm to working area temperature before removing seal
caps. This prevents condensation from forming inside A/C components.
●Thoroughly remove moisture from the refrigeration system before charging the refrigerant.
●Always replace used O-rings.
●When connecting tube, apply lubricant to circle of the O-rings shown in illustration. Be careful not
to apply lubricant to threaded portion.
●O-ring must be closely attached to dented portion of tube.
●When replacing the O-ring, be careful not to damage O-ring and tube.
●Connect tube until you hear it click, then tighten the nut or bolt by hand until snug. Make sure that
the O-ring is installed to tube correctly.
●After connecting line, conduct leak test and make sure that there is no leakage from connections.
When the gas leaking point is found, disconnect that line and replace the O-ring. Then tighten con-
nections of seal seat to the specified torque.
Precautions for Servicing CompressorEJS000T5
●Plug all openings to prevent moisture and foreign matter from entering.
●When the compressor is removed, store it in the same position as it is when mounted on the car.
●When replacing or repairing compressor, follow “Maintenance of Lubricant Quantity in Compres-
sor” exactly. Refer to ATC-24, "
Maintenance of Lubricant Quantity in Compressor" .
●Keep friction surfaces between clutch and pulley clean. If the surface is contaminated, with lubri-
cant, wipe it off by using a clean waste cloth moistened with thinner. With gasoline engine
(CWV-615M compressor)With diesel engine
(DKV-11G compressor)
Lubricant name: Nissan A/C System Oil Type S Nissan A/C System Oil Type R
Part number: KLH00-PAGS0 KLH00-PAGR0
RHA861F

ATC-18
REFRIGERATION SYSTEM
REFRIGERATION SYSTEM
PFP:KA990
Refrigerant CycleEJS000TD
REFRIGERANT FLOW
The refrigerant flows in the standard pattern, that is, through the compressor, the condenser with liquid tank,
through the evaporator, and back to the compressor. The refrigerant evaporation through the evaporator coil is
controlled by an externally equalized expansion valve, located inside the evaporator case.
FREEZE PROTECTION (WITH GASOLINE ENGINE: CWV-615M COMPRESSOR)
Under normal operating conditions, when the A/C is switched on, the compressor runs continuously, and the
evaporator pressure, and therefore, temperature is controlled by the V-6 variable displacement compressor to
prevent freeze up.
Refrigerant System ProtectionEJS000TE
REFRIGERANT PRESSURE SENSOR (WITH GASOLINE ENGINE: CWV-615M COMPRESSOR)
The refrigerant system is protected against excessively high or low pressures by the refrigerant pressure sen-
sor, located on the liquid tank. If the system pressure rises above, or falls below the specifications, the refriger-
ant pressure sensor detects the pressure inside the refrigerant line and sends the voltage signal to the ECM.
ECM makes the A/C relay go OFF and stops the compressor when pressure on the high pressure side
detected by refrigerant pressure sensor is over about 2,746 kPa (28 kg/cm
2 , 398 psi), or below about 134 kPa
(1.4 kg/cm
2 , 20 psi).
DUAL-PRESSURE SWITCH (WITH DIESEL ENGINE: DKV-11G COMPRESSOR)
The refrigerant system is protected against excessively high or low pressures by the dual-pressure switch,
located on the liquid tank. If the system pressure rises above or falls below the specifications, the dual-pres-
sure switch opens to interrupt the compressor operation.
PRESSURE RELIEF VALVE (WITH GASOLINE ENGINE: CWV-615M COMPRESSOR)
The refrigerant system is also protected by a pressure relief valve, located in the rear head of the compressor.
When the pressure of refrigerant in the system increases to an abnormal level [more than 3,727 kPa (38 kg/
cm
2 , 540 psi)], the release port on the pressure relief valve automatically opens and releases refrigerant into
the atmosphere.
RJIA0676E