2001 NISSAN X-TRAIL sensor oxygen

HARNESS
PG-61
C
D
E
F
G
H
I
J
L
MA
B
PG
FUEL EC Fuel Injection System Function
GLOW EC Glow Control System
H/AIM LT Headlamp Aiming Control System
H/LAMP LT Headlamp
H/SEAT SE Heated Seat
HEATER MTC Heater System
HLC WW Headlamp Cleaner
HO2S1 EC Heated Oxygen Sensor 1 (Front)
HO2S1H EC Heated Oxygen Sensor 1 Heater (Front)
HO2S2 EC Heated Oxygen Sensor 2 (Rear)
HO2S2H EC Heated Oxygen Sensor 2 Heater (Rear)
HORN WW Horn
IATS EC Intake Air Temperature Sensor
IATSEN EC Intake Air Temperature Sensor
IGN/SG EC Ignition Signal
IGNSYS EC Ignition Signal
ILL LT Illumination
INJECT EC Injector
INT/L LT Map Lamp
IVC EC Intake Valve Timing Control Solenoid Valve
IVC/V EC Intake Valve Timing Control Solenoid Valve
KS EC Knock Sensor (KS)
LOAD EC Electrical Load Signal
LPSV AT Line Pressure Solenoid Valve
MAFS EC Mass Air Flow Sensor (MAFS)
MAIN EC, AT Main Power Supply and Ground Circuit
METER DI Meter and Gauge
MIL EC Malfunction Indicator Lamp
MIL/DL EC MIL and Data Link Connector
MIRROR GW Door Mirror
MULTI BL Multi-Remote Control System
NATS BL Nissan Anti-Theft System
NONDTC AT Non-Detective Items
OVRCSV AT Overrun Clutch Solenoid Valve
PGC/V EC EVAP Canister Purge Volume Control Solenoid Valve
PHASE EC Camshaft Position Sensor (PHASE)
PNP/SW EC, AT Park/Neutral Position (PNP) Switch
PNPSW1 EC Park/Neutral Position (PNP) Switch
POS EC Crankshaft Position Sensor (CKPS) (POS)
POWER PG Power Supply Routing
PRGVLV EC EVAP Canister Purge Volume Control Solenoid Valve
PRWIRE BL Theft Warning System (Pre-wire)
PS/SEN EC Power Steering Pressure Sensor
PST/SW EC Power Steering Oil Pressure SwitchCode Section Wiring Diagram Name

PG-62
HARNESS
R/FOG LT Rear Fog Lamp
ROOM/L LT Interior Room Lamp
RP/SEN EC Refrigerant Pressure Sensor
RRO2 EC Heated Oxygen Sensor 2 (Rear)
RRO2/H EC Heated Oxygen Sensor 2 Heater (Rear)
S/LOCK BL Super Lock
S/SIG EC Start Signal
S/WARN SB Seat Belt Warning System
SCTC/V EC Suction Control Valve
SHIFT AT A/T Shift Lock System
SROOF BL Sunroof
SRS SRS Supplemental Restraint System (SRS)
SSV/A AT Shift Solenoid Valve A
SSV/B AT Shift Solenoid Valve B
START SC Starting System
STOP/L LT Stop Lamp
T/MTR EC Throttle Control Motor
TAIL/L LT Parking, License and Tail Lamps
TCV AT Torque Converter Clutch Solenoid Valve
TM/RLY EC Throttle Control Motor Relay
TPS EC, AT Throttle Position Sensor
TURN LT Turn Signal and Hazard Warning Lamps
VDC BRC Vehicle Dynamics Control System
VIAS/V EC Variable Air Induction Control System
VSS EC Vehicle Speed Sensor (VSS)
VSSAT AT Vehicle Speed Sensor A/T (Revolution Sensor)
VSSMTR AT Vehicle Speed Sensor MTR
WARN DI Warning Lamps
WINDOW GW Power Window
WIP/R WW Rear Wiper and Washer
WIPER WW Front Wiper and WasherCode Section Wiring Diagram Name

PERIODIC MAINTENANCE
MA-7
C
D
E
F
G
H
I
J
K
MA
B
MA
PERIODIC MAINTENANCEPFP:00026
Periodic MaintenanceELS000AM
The following tables show the normal maintenance schedule. Depending upon weather and atmospheric con-
ditions, varying road surfaces, individual driving habits and vehicle usage, additional or more frequent mainte-
nance may be required.
Periodic maintenance beyond the last period shown on the tables requires similar maintenance.
ENGINE AND EMISSION CONTROL MAINTENANCE (QR20DE AND QR25DE PETROL ENGINE)
(Annual Mileage <30,000 Km/year)
Abbreviations: I = Inspect and correct or replace as necessary,R = Replace,.
NOTE:
● Maintenance items with “ ” should be performed more frequently according to “Maintenance Under Severe Driving
Conditions”.
●(1)Periodic maintenance is not required. However, if valve noise increases, check valve clearance.
●(2) Replace the drive belts if found damaged or if the auto belt tensioner reading reaches the maximum limit.
●(3) First replace at 90,000 Km (54,000 miles)/60 months, then every 60,000 km (36,000 miles)/48 months. Perform "I"
(Checking the mixture ratio and correcting the mixture ratio if necessary) at the middle of replacement interval.
●(4) Fuel filter is maintenance-free. For service procedures, refer to FL section.
●(5) Perform only according to "Maintenance Under Severe Driving conditions" for models without Euro-OBD system. For
models with Euro-OBD system, periodic maintenance is not required.
CHASSIS AND BODY MAINTENANCE (QR20DE AND QR25DE PETROL ENGINE)
(Annual Mileage <30,000 Km/year)
MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Refer-
ence
page Perform on a kilometer basis, but on an annual
basis when driving less than 15,000 km (9,000
miles) per yearkm x
1,000
(Miles x
1,000)
Months15
(9)
1230
(18)
2445
(27)
3660
(36)
4875
(45)
6090
(54)
72105
(63)
84120
(72)
96
Engine compartment and under vehicle
Intake and exhaust valve clearanceSee
NOTE (1)EM-53
Drive beltsSee
NOTE (2)MA-19
Engine oil (Use recommended oil.)R RRRRRRRMA-23
Engine oil filter (Use NISSAN genuine part or
equivalent)R RRRRRRRMA-23
Engine anti-freeze coolant (Use genuine NISSAN
Anti-Freeze Coolant (L2N) or equivalent.)See
NOTE (3)IRIMA-19
Cooling system II IIIIIIMA-21
Fuel lines I I I IMA-22
Air cleaner filterRRMA-22
Fuel filter (In-tank type)See
NOTE (4)FL-4
Spark plugs R R R RMA-24
EVAP vapor lines (With carbon canister) I I I IEC-425or EC-
111 2
Heated oxygen sensor 1 See
NOTE (5)EC-1320

PERIODIC MAINTENANCE
MA-11
C
D
E
F
G
H
I
J
K
MA
B
MAENGINE AND EMISSION CONTROL MAINTENANCE (QR20DE AND QR25DE PETROL ENGINE)
(Annual Mileage >30,000 Km/year)
Abbreviations: I = Inspect and correct or replace as necessary,R = Replace,. ...........LHeated oxygen
sensor 1Petrol models InspectEvery 30,000 km
(18,000 miles) or 24
monthsEC-1320
.....F......Brake fluidPetrol models ReplaceEvery 15,000 km (9,000
miles) or 12 monthsMA-39Diesel models ReplaceEvery 20,000 km
(12,000 miles) or 12
monthsMA-39
..C
....H
....Differential gear
oilPetrol models ReplaceEvery 30,000 km
(18,000 miles) or 24
monthsMA-38
Diesel models ReplaceEvery 30,000 km
(18,000 miles) or 18
monthsMA-38
..C....H....Automatic tran-
saxle fluidPetrol models ReplaceEvery 30,000 km
(18,000 miles) or 24
monthsMA-37
......GH....Steering gear &
linkage, axle &
suspension
parts, propeller
shaft, front drive
shafts & exhaust
systemPetrol models InspectEvery 7,500 km (4,500
miles) or 6 monthsMA-
40,MA-41
,MA-37
,MA-41
,MA-35
Diesel models InspectEvery 10,000 km (6,000
miles) or 6 monthsMA-
40,MA-41
,MA-37
,MA-41
,MA-35
A.C...GHI...Brake pads,
rotors & other
brake compo-
nentsPetrol models InspectEvery 7,500 km (4,500
miles) or 6 monthsMA-
40,MA-39
,MA-40
Diesel models InspectEvery 10,000 km (6,000
miles) or 6 monthsMA-40,MA-39
,MA-40
A...........Ventilation air fil-
terPetrol models ReplaceEvery 15,000 km (9,000
miles) or 12 monthsAT C - 1 2 1Diesel models ReplaceEvery 10,000 km (6,000
miles) or 6 monthsAT C - 1 2 1
MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Refer-
ence
page Perform on a kilometer basis, but on an annual
basis when driving less than 15,000 km (9.000
miles) per yearkm x
1,000
(Miles x
1,000)
Months15
(9)30
(18)45
(27)60
(36)75
(45)90
(54)105
(63)120
(72)
Engine compartment and under vehicle
Intake and exhaust valve clearanceSee
NOTE (1)EM-53
Drive beltsSee
NOTE (2)II IIIIIIMA-19
Engine oil (Use recommended oil.)R RRRRRRRMA-23
Engine oil filter (Use NISSAN genuine part or
equivalent)R RRRRRRRMA-23
Engine anti-freeze coolant (Use genuine NISSAN
Anti-Freeze Coolant (L2N) or equivalent.)See
NOTE (3)IRIMA-19

MA-12
PERIODIC MAINTENANCE
NOTE:
● Maintenance items with “ ” should be performed more frequently according to “Maintenance Under Severe Driving
Conditions”.
●(1)Periodic maintenance is not required. However, if valve noise increases, check valve clearance.
●(2) Replace the drive belts if found damaged or if the auto belt tensioner reading reaches the maximum limit.
●(3) First replace at 90,000 Km (54,000 miles), then every 60,000 km (36,000 miles). Perform "I" (Checking the mixture ratio
and correcting the mixture ratio if necessary) at the middle of replacement interval.
●(4) Fuel filter is maintenance-free. For service procedures, refer to FL section.
●(5) Perform only according to "Maintenance Under Severe Driving conditions" for models without Euro-OBD system. For
models with Euro-OBD system, periodic maintenance is not required.
CHASSIS AND BODY MAINTENANCE (QR20DE AND QR25DE PETROL ENGINE)
(Annual Mileage >30,000 Km/year)
Abbreviations: I = Inspect and correct or replace as necessary,R = Replace, L = Lubricate. Cooling system I I I IMA-21
Fuel linesIIMA-22
Air cleaner filterRRMA-22
Fuel filter (In-tank type)See
NOTE (4)FL-4
Spark plugs R R R RMA-24
EVAP vapor lines (With carbon canister) I IEC-111 2 o r
EC-
111 2
Heated oxygen sensor 1 See
NOTE (5)EC-1320
MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Refer-
ence
page Perform on a kilometer basis, but on an annual
basis when driving less than 15,000 km (9.000
miles) per yearkm x
1,000
(Miles x
1,000)
Months15
(9)30
(18)45
(27)60
(36)75
(45)90
(54)105
(63)120
(72)
MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Reference
page Perform either at number of kilometers
(miles) or months, whichever comes
first.km x 1,000
(Miles x 1,000)
Months15
(9)30
(18)45
(27)60
(36)75
(45)90
(54)105
(63)120
(72)
Underhood and under vehicle
Headlamp aiming I I I ILT- 6
Brake & clutch, systems and fluid (For
level & leaks)IIIIMA-35,MA-
39
Brake fluidRRMA-39
Brake booster vacuum hoses, connec-
tions & check valveIIBR-19
Power steering fluid & lines (For level
& leaks)IIIIMA-40
Manual transaxle gear oil (For level &
leaks)IIIIMA-35
Automatic transaxle fluid (For level &
leaks)IIIIMA-36
Transfer gear oil (For level & leaks) I I I IMA-37
Differential gear oil (For level & leaks
or replace)IRIRMA-38,MA-
38

PERIODIC MAINTENANCE
MA-15
C
D
E
F
G
H
I
J
K
MA
B
MA
H — Driving on rough and/or muddy roads or in the desert
I — Driving with frequent use of braking or in mountainous areas
J — Frequent off road use or driving in water
K —Sustained high speed driving
L — For models without Euro-OBD system
Maintenance operation: Check = Check and correct or replace as necessary.
Driving conditionMaintenance itemMainte-
nance
opera-
tionMaintenance intervalRefer-
ence
page
A
...........Air cleaner filterPetrol models ReplaceEvery 30,000 km
(18,000 miles) MA-22
Diesel models ReplaceEvery 30,000 km
(18,000 miles) MA-32
ABCD
........Engine oil &
engine oil filter Petrol models ReplaceEvery 7,500 km (4,500
miles) MA-23
,
MA-23
Diesel models ReplaceEvery 10,000 km (6,000
miles) MA-32,
MA-33
A...E.......Fuel filter Diesel models Check &
drain
waterEvery 10,000 km (6,000
miles) FL-15
ReplaceEvery 30,000 km
(18,000 miles) MA-31
...........LHeated oxygen
sensor 1Petrol models InspectEvery 60,000 km
(36,000 miles) EC-1320
.....F......Brake fluidPetrol models ReplaceEvery 30,000 km
(18,000 miles) MA-39Diesel models ReplaceEvery 30,000 km
(18,000 miles) MA-39
..C
....H
....Differential gear
oilPetrol models ReplaceEvery 30,000 km
(18,000 miles) MA-38Diesel models ReplaceEvery 30,000 km
(18,000 miles) MA-38
..C....H....Automatic tran-
saxle fluidPetrol models ReplaceEvery 60,000 km
(36,000 miles) MA-37
......GH....Steering gear &
linkage, axle &
suspension
parts, propeller
shaft, front drive
shafts & exhaust
systemPetrol models InspectEvery 30,000 km
(18,000 miles) MA-
40,MA-41
,MA-37
,MA-41
,MA-35
Diesel models InspectEvery 30,000 km
(18,000 miles) MA-
40,MA-41
,MA-37
,MA-41
,MA-35
A.C...GHI...Brake pads,
rotors & other
brake compo-
nentsPetrol models InspectEvery 15,000 km (9,000
miles) MA-
40,MA-39
,MA-40
Diesel models InspectEvery 10,000 km (6,000
miles) MA-40,MA-39
,MA-40
A...........Ventilation air fil-
terPetrol models ReplaceEvery 15,000 km (9,000
miles) AT C - 1 2 1Diesel models ReplaceEvery 10,000 km (6,000
miles) AT C - 1 2 1

IDX-5
A
C
D
E
F
G
H
I
J
K
L B
IDX
ALPHABETICAL INDEX
EC-1368
Fan control amp. ............................. ATC-74,ATC-120
Fan switch ........................................ ATC-30,MTC-17
FIAR - Wiring diagram ................................... EC-1526
Final drive (FF M/T) .............................. MT-21,MT-26
Final drive disassembly ................................... RFD-11
Final drive removal and installation ................. RFD-11
Finisher, interior - See Trim ...................... EI-23,EI-25
Finisher, rear panel .............................................. EI-22
Floor trim ............................................................. EI-28
Flow charts ......................................................... GI-23
Fluid temperature sensor (A/T) ........................ AT-121
Fluorescent leak detector .............................. ATC-147
Flywheel (clutch) ................................................ CL-15
Flywheel runout(QR20DE•QR25DE) ................. EM-97
Flywheel runout(YD22DDTi) ............................ EM-218
Fog lamp, front ................................................... LT-33
Fork rod (M/T) ....................................... MT-20,MT-25
Freeze frame data EC-48,EC-455,EC-780,EC-1142
FRO2 - Wiring diagram .................... EC-672,EC-1321
FRO2/H - Wiring diagram ................ EC-658,EC-1308
Front bumper ......................................................... EI-6
Front disc brake ................................................. BR-21
Front door ............................................................. BL-8
Front Door Trim ................................................... EI-23
Front fog lamp .................................................... LT-33
Front passenger air bag .................................. SRS-35
Front seat ............................................................ SE-7
Front seat belt ...................................................... SB-3
Front seat belt pre-tensioner .... SB-2,SRS-3,SRS-39
Front side air bag ............................................. SRS-36
Front suspension ............................................... FSU-5
Front washer ...................................................... WW-4
Front wiper ......................................................... WW-4
FTS - Wiring diagram .................................... EC-1497
Fuel check valve ................ EC-425,EC-746,EC-1112
Fuel cut control (at no load high engine speed) EC-37,
EC-447
,EC-769,EC-1133,EC-1401
Fuel filler lid ........................................................ BL-75
Fuel filter ........................................................ EC-1404
Fuel filter replacement(QR20DE•QR25DE) .......... FL-4
Fuel filter replacement(YD22DDTi) ....... FL-15,MA-31
Fuel gauge .................................................. DI-4,DI-24
Fuel injection control system ......................... EC-1399
Fuel injection system .......... EC-200,EC-206,EC-934,
EC-940
Fuel injector ................................................... EC-1472
Fuel injector adjustment resistor .................... EC-1525
Fuel injector and fuel tube(QR20DE•QR25DE) . EM-32
Fuel injector and fuel tube(YD22DDTi) ............ EM-144
Fuel leak ........................................................ EC-1529
Fuel line inspection(QR20DE•QR25DE) . FL-3,MA-22
Fuel line inspection(YD22DDTi) ............ FL-14,MA-30
Fuel pressure check EC-42,EC-452,EC-775,EC-1139
Fuel pressure release ........... EC-42,EC-452,EC-775,
EC-1139
Fuel pressure relief valve .............................. EC-1405
Fuel pump ......... EC-405,EC-726,EC-1092,EC-1366
Fuel pump and gauge(QR20DE•QR25DE) .......... FL-4
Fuel system(QR20DE•QR25DE) .......................... FL-3
Fuel system(YD22DDTi) ..................................... FL-14
Fuel tank(QR20DE•QR25DE) ............................... FL-9
Fuel tank(YD22DDTi) ......................................... FL-21
Fuel temperature sensor ................................ EC-1496
Fuse ................................................................... PG-12
Fuse and fusible link box ................................... PG-75
Fusible link ......................................................... PG-12
G
Gear components (M/T) ........................ MT-18
,MT-23
Generator ........................................................... SC-12
Generator - See Alternator ................................ SC-12
Generic scan tool (GST) .................... EC-104,EC-836
Glass ................................................... GW-44,GW-46
GLOW - Wiring diagram ................................ EC-1545
Glow plug ....................................................... EC-1544
Glow plug(YD22DDTi) .................................... EM-138
Glow relay ...................................................... EC-1544
Grille - See Exterior ............................................ EI-11
Ground distribution ............................................ PG-13
G-sensor ............................................................ TF-50
H
H/AIM - Wiring diagram ...................................... LT-15
H/LAMP - Wiring diagram ........................... LT-4,LT-5
H/MIRROR - Wiring diagram ............................ GW-15
Harness connector ............................................. PG-68
Harness layout ................................................... PG-29
Headlamp ............................................................. LT-4
Headlamp aiming control .................................... LT-15
Headlamp leveler - See Headlamp aiming control .......
LT-15
Headlamp washer ............................................ WW-19
Headlining - See Roof trim .................................. EI-29
Heated oxygen sensor 1 .... EC-163,EC-169,EC-178,
EC-295
,EC-301,EC-534,EC-671,EC-899,EC-905,
EC-914
,EC-1023,EC-1029,EC-1229,EC-1320
Heated oxygen sensor 1 heater ........ EC-128,EC-657,
EC-860
,EC-1307
Heated oxygen sensor 2 .... EC-185,EC-192,EC-307,
EC-315
,EC-677,EC-921,EC-927,EC-1035,EC-1042,
EC-1326
Heated oxygen sensor 2 heater ........ EC-133,EC-662,
EC-865
,EC-1312
Heated seat ............................................... SE-3,SE-5
HEATER - Wiring diagram ................................ MTC-6
Heater and cooling unit (Heater core) ............ ATC-122
Heater mirror ..................................................... GW-15
Heater system - Wiring diagram ....................... MTC-6
Heater unit (heater core) .. ATC-126,MTC-24,MTC-26
HFC134a (R134a) system precaution ............... ATC-4
HFC134a (R134a) system service procedure ATC-129
HFC134a (R134a) system service tools .......... ATC-15
HFC134a system service equipment precaution ..........
ATC-10
HO2S1 - Wiring diaram ...... EC-130,EC-165,EC-172,