2001 NISSAN X-TRAIL cooling

BLOWER MOTOR
MTC-21
C
D
E
F
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L
MA
B
MTC
BLOWER MOTORPFP:27226
Removal and InstallationEJS000XK
1. Remove the blower unit.
2. Separate the blower unit.
3. Remove the cooling hose, blower fan resistor and blower fan.
RJIA0054E
RJIA0092E

MTC-24
HEATER UNIT
HEATER UNIT
PFP:27100
Removal and InstallationEJS001F9
REMOVAL
1. Drain coolant from cooling system.
2. Disconnect two heater hoses from heater core pipe.
3. Remove the instrument panel.
4. Remove the blower unit.
5. Remove the clips of vehicle harness from steering member.
6. Remove the instrument stay.
NOTE:
This illustration is for RHD models. The layout for LHD models is symmetrically opposite.
RJIA0060E
RJIA0061E
RJIA0062E

PG-60
HARNESS
Wiring Diagram Codes (Cell Codes)
EKS0032J
Use the chart below to find out what each wiring diagram code stands for.
Refer to the wiring diagram code in the alphabetical index to find the location (page number) of each wiring
diagram.
Code Section Wiring Diagram Name
1STSIG AT A/T 1st Signal
2NDSIG AT A/T 2nd Signal
3RDSIG AT A/T 3rd Signal
4THSIG AT A/T 4th Signal
4WD BRC 4WD Control system
A/C ATC Air Conditioner
ABS BRC ABS Control System
APPS EC Accelerator Pedal Position (APP) Sensor
APRSW EC Accelerator Pedal Released Position Sensor
AT/IND DI A/T Indicator
AUDIO AV Audio
BA/FTS AT A/T Fluid Temperature Sensor and TCM Power Supply
BACK/L LT Back-up Lamp
BRK/SW EC Brake Switch
CAN EC,AT CAN Communication Line
CAN LAN CAN System
CHARGE SC Charging System
CHIME DI Warning Chime
CIGAR WW Cigarette Lighter
CLOCK DI Clock
CKPS EC Crankshaft Position Sensor
CMPS EC Camshaft Position Sensor
COOL/F EC Cooling Fan Control
CRFPS EC Common Rail Fuel Pressure Sensor
D/LOCK BL Power Door Lock
DEF GW Rear Window Defogger
DTRL LT Headlamp - With Daytime Light System
ECM/PW EC ECM Power
ECMRLY EC ECM Relay
ECTS EC Engine Coolant Temperature Sensor
EGRC/V EC EGR Volume Control Valve
ENGSS AT Engine Speed Signal
ETC1 EC Electric Throttle Function
ETC2 EC Electric Throttle Control Motor Relay
ETC3 EC Electric Throttle Control Motor
F/FOG LT Front Fog Lamp
FIAR EC Fuel Injector Adjustment resister
FRO2 EC Heated Oxygen Sensor 1 (Front)
FRO2/H EC Heated Oxygen Sensor 1 Heater (Front)
FTS EC Fuel Temperature Sensor
FTS AT A/T Fluid Temperature Sensor

MA-1
MAINTENANCE
L MAINTENANCE
CONTENTS
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SECTION
A
B
MA
MAINTENANCE
PREPARATION ........................................................... 3
Special Service Tools ............................................... 3
Commercial Service Tools ........................................ 3
DESCRIPTION ............................................................ 4
Pre-delivery Inspection Items ................................... 4
GENERAL MAINTENANCE ....................................... 6
General Maintenance ............................................... 6
PERIODIC MAINTENANCE ....................................... 7
Periodic Maintenance ............................................... 7
ENGINE AND EMISSION CONTROL MAINTE-
NANCE (QR20DE AND QR25DE PETROL
ENGINE) ............................................................... 7
CHASSIS AND BODY MAINTENANCE
(QR20DE AND QR25DE PETROL ENGINE) ....... 7
ENGINE AND EMISSION CONTROL MAINTE-
NANCE (YD22DDTI DIESEL ENGINE) ................ 8
CHASSIS AND BODY MAINTENANCE
(YD22DDTI DIESEL ENGINE) .............................. 9
MAINTENANCE UNDER SEVERE DRIVING
CONDITIONS ...................................................... 10
ENGINE AND EMISSION CONTROL MAINTE-
NANCE (QR20DE AND QR25DE PETROL
ENGINE) .............................................................. 11
CHASSIS AND BODY MAINTENANCE
(QR20DE AND QR25DE PETROL ENGINE) ..... 12
ENGINE AND EMISSION CONTROL MAINTE-
NANCE (YD22DDTI DIESEL ENGINE) .............. 13
CHASSIS AND BODY MAINTENANCE
(YD22DDTI DIESEL ENGINE) ............................ 14
MAINTENANCE UNDER SEVERE DRIVING
CONDITIONS ...................................................... 14
RECOMMENDED FLUIDS AND LUBRICANTS ...... 16
Fluids and Lubricants ............................................. 16
SAE Viscosity Number ........................................... 17
GASOLINE ENGINE ........................................... 17
DIESEL ENGINE ................................................. 17
Engine Coolant Mixture Ratio ................................ 18
ENGINE MAINTENANCE (QR20DE·QR25DE) ........ 19
Checking Drive Belts .............................................. 19
Tension Adjustment ................................................ 19Changing Engine Coolant ....................................... 19
DRAINING ENGINE COOLANT .......................... 19
REFILLING ENGINE COOLANT ......................... 20
FLUSHING COOLING SYSTEM ......................... 21
Checking Cooling System ...................................... 21
CHECKING COOLING SYSTEM HOSES ........... 21
CHECKING RADIATOR ...................................... 21
CHECKING RADIATOR CAP .............................. 21
CHECKING RADIATOR SYSTEM FOR LEAKS ... 22
Checking Fuel Lines ............................................ ... 22
Changing Air Cleaner Filter .................................... 22
VISCOUS PAPER TYPE ..................................... 22
DRY PAPER TYPE .............................................. 22
Changing Engine Oil ............................................ ... 23
Changing Oil Filter .................................................. 23
Checking and Changing Spark Plugs ..................... 24
REMOVAL ........................................................... 24
INSPECTION AFTER REMOVAL ....................... 24
INSTALLATION ................................................... 25
Checking EVAP Vapor Lines .................................. 25
ENGINE MAINTENANCE (YD22DDTI) .................... 26
Checking Drive Belts .............................................. 26
Tension Adjustment ............................................. ... 26
AIR CONDITIONER COMPRESSOR BELT ........ 27
ALTERNATOR AND WATER PUMP BELT .......... 27
Changing Engine Coolant ....................................... 27
DRAINING ENGINE COOLANT .......................... 27
REFILLING ENGINE COOLANT ......................... 28
FLUSHING COOLING SYSTEM ......................... 29
Checking Cooling System ...................................... 29
CHECKING COOLING SYSTEM HOSES ........... 29
CHECKING RADIATOR ...................................... 29
CHECKING RADIATOR CAP .............................. 30
CHECKING RADIATOR SYSTEM FOR LEAKS ... 30
Checking Fuel Lines ............................................ ... 30
Changing Fuel Filter ............................................... 31
REMOVAL ........................................................... 31
INSTALLATION ................................................... 31
Changing Air Cleaner Filter .................................... 32
VISCOUS PAPER TYPE ..................................... 32

PERIODIC MAINTENANCE
MA-7
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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-9
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NOTE:
● Maintenance items with “ ” should be performed more frequently according to “Maintenance Under Severe Driving
Conditions”.
●(1) If valve noise increases, check valve clearance.
●(2) Never use CG-4 oil.
●(3) Oil filter element assembly and O-ring seal are replacement parts.
●(4) First replace at 100,000 Km (60,000 miles)/60 months, then every 60,000Km (36,000 miles)/36 months. After first
replacement, perform "I" (checking the mixture ratio and correcting the mixture ratio if necessary) at the middle of
replacement interval.
●(5) If engine power decreases, black exhaust smoke is emitted or engine noise increases, perform this maintenance item.
CHASSIS AND BODY MAINTENANCE (YD22DDTI DIESEL ENGINE)
(Annual Mileage <30,000 Km/year)
Abbreviations: I = Inspect and correct or replace as necessary,R = Replace, L = Lubricate. Engine oil filter (Use Eco filter or equivalent)See NOTE
(3)RRRRRRMA-33
Engine anti-freeze coolant (Use genuine Nissan Anti-
freeze coolant (L2N) or equivalent)See NOTE
(4)IRMA-27
Cooling system I I I I I IMA-29
Fuel lines I I IMA-30
Air cleaner filter RRMA-32
Fuel filterDRDRDRMA-31
Fuel injectorSee NOTE
(5)EM-144
MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Refer-
ence page Perform either at number of kilometers (miles) or
months, whichever comes first.km x 1,000
(Miles x
1,000)
Months20
(12)
1240
(24)
2460
(36)
3680
(48)
48100
(60)
60120
(72)
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)
Months20
(12)
1240
(24)
2460
(36)
3680
(48)
48100
(60)
60120
(72)
72
Underhood and under vehicle
Headlamp aiming IIIIIILT- 6
Brake & clutch, systems and fluid (For level
& leaks)IIIIIIMA-39,MA-35
Brake fluidRRRMA-39
Brake booster vacuum hoses, connections
& check valveIIIBR-19
Power steering fluid & lines (For level &
leaks)IIIIIIMA-40
Manual transaxle gear oil (For level & leaks) IIIIIIMA-35,
Transfer gear oil (For level & leaks) IIIIIIMA-37
Differential gear oil (For level & leaks or
replace)IIRIIRMA-38
Steering gear & linkage, axle & suspension
parts, propeller shaft, front drive shafts &
exhaust systemIIIIIIMA-40,MA-41
,MA-37 ,MA-
41 ,MA-35
Wheel alignment (If necessary, rotate & bal-
ance wheels)IIIIIIFSU-6,MA-38

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-13
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NOTE:
●(1) Inspect once per year.
● Maintenance items with “ ” should be performed more frequently according to “Maintenance Under Severe Driving
Conditions”.
ENGINE AND EMISSION CONTROL MAINTENANCE (YD22DDTI DIESEL ENGINE)
(Annual Mileage >30,000 Km/year)
Abbreviations: I = Inspect and correct or replace as necessary,R = Replace, D = Check filter and drain water
NOTE:
● Maintenance items with “ ” should be performed more frequently according to “Maintenance Under Severe Driving
Conditions”.
●(1) If valve noise increases, check valve clearance.
●(2) Never use CG-4 oil.
●(3) Oil filter element assembly and O-ring seal are replacement parts. Steering gear & linkage, axle & sus-
pension parts, propeller shaft, front
drive shafts & exhaust systemIIIIMA-40
,MA-
41 ,MA-37
,MA-41,
"Drive
Shaft"
Wheel alignment (If necessary, rotate
& balance wheels)IIIIFSU-6,MA-
38
Brake pads, rotors & other brake com-
ponentsIIIIMA-40,MA-
40 ,MA-39
Foot brake, parking brake & clutch (For
free play, stroke & operation)IIIIBR-6,PB-3 ,
CL-5
Ventilation air filterRRRRAT C - 1 2 1
Body corrosion See NOTE (1)MA-42
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)
MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Refer-
ence page Perform either at number of kilometers (miles) or
months, whichever comes first.km x 1,000
(Miles x
1,000)
Months20
(12)40
(24)60
(36)80
(48)100
(60)120
(72)
Engine compartment and under vehicle
Intake & exhaust valve clearanceSee NOTE
(1)EM-163
Drive belts I I I I I IMA-26
Engine oil (Use API CD, CE, CF, CF-4 oil.)See NOTE
(2)RRRRRRMA-32
Engine oil filter (Use Eco filter or equivalent)See NOTE
(3)RRRRRRMA-33
Engine anti-freeze coolant (Use genuine Nissan Anti-
freeze coolant (L2N) or equivalent)See NOTE
(4)IRMA-27
Cooling system I I I I I IMA-29
Fuel linesIIMA-30
Air cleaner filter RRMA-32
Fuel filterDDRDDRMA-31
Fuel injectorSee NOTE
(5)EM-144