2001 NISSAN X-TRAIL check engine

ENGINE MAINTENANCE (QR20DE·QR25DE)
MA-21
C
D
E
F
G
H
I
J
K
MA
B
MA
●Clean excess engine coolant from engine.
FLUSHING COOLING SYSTEM
1. Fill radiator and reservoir tank with water and reinstall radiator cap.
2. Run engine and warm it up to normal operating temperature.
3. Rev engine two or three times under no-load.
4. Stop engine and wait until it cools down.
5. Drain water.
6. Repeat steps 1 through 5 until clear water begins to drain from radiator.
Checking Cooling SystemELS000JW
WARNING:
Never remove the radiator cap when the engine is hot; serious burns could be caused by high pres-
sure fluid escaping from the radiator.
Wrap a thick cloth around the cap and carefully remove it by turning it a quarter turn to allow built-up
pressure to escape and then turn the cap all the way off.
CHECKING COOLING SYSTEM HOSES
Check hoses for improper attachment, leaks, cracks, damage, loose connections, chafing and deterioration.
CHECKING RADIATOR
Check radiator for mud or clogging. If necessary, clean radiator as follows.
●Be careful not to bend or damage the radiator fins.
●When radiator is cleaned without removal, remove all surrounding parts such as cooling fan, radiator
shroud and horns. Then tape the harness and connectors to prevent water from entering.
1. Apply water by hose to the back side of the radiator core vertically downward.
2. Apply water again to all radiator core surfaces once per minute.
3. Stop washing if any stains no longer flow out from the radiator.
4. Blow air into the back side of radiator core vertically downward.
●Use compressed air lower than 490 kPa (4.9 bar, 5 kg/cm2 , 71 psi) and keep distance more than 30 cm
(11.8 in).
5. Blow air again into all the radiator core surfaces once per minute until no water sprays out.
CHECKING RADIATOR CAP
1. Pull the negative pressure valve to open it and check that it
close completely when released.
●Check that there is no dirt or damage on the valve seat of the
radiator cap negative-pressure valve.
●Check that there are no abnormalities in the opening and
closing conditions of the negative-pressure valve.
2. Check radiator cap relief pressure.
●When connecting the radiator cap to the tester, apply engine
coolant to the cap seal part.
SMA967B
Standard:
78 - 98 kPa (0.78 - 0.98 bar, 0.8 - 1.0 kg/cm
2 , 11 - 14 psi)
Limit:
59 kpa (0.59 bar, 0.6 kg/cm
2 , 9 psi)
SLC755AC

MA-22
ENGINE MAINTENANCE (QR20DE·QR25DE)
●Replace the radiator cap if there is an abnormality in the negative-pressure valve, or if the open-valve
pressure is outside of the standard values.
CHECKING RADIATOR SYSTEM FOR LEAKS
To check for leakage, apply pressure to the cooling system with a
tester.
WARNING:
Never remove the radiator cap when the engine is hot. Serious
burns could occur from high pressure engine coolant escaping
from the radiator.
CAUTION:
Higher pressure than specified may cause radiator damage.
Checking Fuel LinesELS000JX
Inspect fuel lines, filler cap and tank for improper attachment, leaks,
cracks, damage, loose connections, chafing or deterioration. If nec-
essary, repair or replace faulty parts.
Fuel Hose Clamp
CAUTION:
Tighten high-pressure rubber hose clamp so that clamp end is
3 mm (0.12 in) from hose end.
Tightening torque specifications are the same for all rubber
hose clamps.
Ensure that screw does not contact adjacent parts.
Changing Air Cleaner FilterELS000JY
VISCOUS PAPER TYPE
The viscous paper type filter does not need cleaning.
DRY PAPER TYPE
It is necessary to clean the filter or replace it at the recommended intervals, more often under dusty driving
conditions.Testing pressure:
157 kPa (1.57 bar, 1.6 kg/cm
2 , 23 psi)
SLC756AA
SMA803A
MMA104A
SMA037D

ENGINE MAINTENANCE (QR20DE·QR25DE)
MA-23
C
D
E
F
G
H
I
J
K
MA
B
MA
Changing Engine OilELS000JZ
WARNING:
●Be careful not to burn yourself, as the engine oil is hot.
●Prolonged and repeated contact with used engine oil may
cause skin cancer. Try to avoid direct skin contact with
used engine oil. If skin contact is made, wash thoroughly
with soap or hand cleaner as soon as possible.
1. Warm up engine, put vehicle horizontally and check for engine
oil leakage from engine components.
2. Stop engine and wait for 10 minutes.
3. Remove drain plug and oil filler cap.
4. Drain engine oil.
●Install drain plug and refill with new engine oil.
Engine oil specifications and viscosity:
●API grade SG, SH, SJ or SL.
●ILSAC grade GF-I, GF-II or GF-III
●ACEA 96-A2
●Refer to MA-16, "RECOMMENDED FLUIDS AND LUBRICANTS" for further detail.
Engine oil capacity (Approximate):
Unit: liter (lmp qt)
CAUTION:
●Be sure to clean drain plug and install with new washer.
●The refill capacity depends on the engine oil temperature and drain time. Use these specifica-
tions for reference only.
●Always use the dipstick to the determine when the proper amount of engine oil is in the engine.
5. Warm up engine and check area around drain plug and oil filter for engine oil leakage.
6. Stop engine and wait for 10 minutes.
7. Check engine oil level. Refer to LU-7, "
ENGINE OIL" .
Changing Oil FilterELS000K0
1. Open the oil filter installation/removal cover on the undercover.
2. Using an oil filter wrench, remove the oil filter.
CAUTION:
●The oil filter is provided with a relief valve.
Use genuine NISSAN oil filter or equivalent.
●Be careful not to get burned when the engine and engine
oil are hot.
●When removing, prepare a shop cloth to absorb any
engine oil leakage or spillage.
●Do not allow engine oil to adhere to the drive belts.
●Completely wipe off any engine oil that adhere to the
engine and the vehicle.
3. Remove foreign materials adhering to the oil filter installation surface.
PBIC0250E
Drain and refillWith oil filter change Approximately 3.9 (3-3/8)
Without oil filter change Approximately 3.5 (3-1/8)
Dry engine (engine overhaul)Approximately 4.5 (4)
Oil pan drain plug:
: 29.4 - 39.2 N·m (3.0 - 4.0 kg-m, 22 - 28 ft-lb)
KBIA0303E

MA-24
ENGINE MAINTENANCE (QR20DE·QR25DE)
4. Apply engine oil to the oil seal circumference of the new oil filter.
5. Screw the oil filter manually until it touches the installation sur-
face, then tighten it by 2/3 turn.
6. After warming up the engine, check for engine oil leakage.
7. Check engine oil level and add engine oil. Refer to LU-7, "
ENGINE OIL" .
Checking and Changing Spark PlugsELS000K1
REMOVAL
1. Remove ignition coil. Refer to EM-29, "IGNITION COIL" .
2. Remove spark plug with suitable spark plug wrench.
CAUTION:
Do not drop or shock it.
INSPECTION AFTER REMOVAL
●Use standard type spark plug for normal condition.
●The hot type spark plug is suitable when fouling occurs with the standard type spark plug under conditions
such as.
–frequent engine starts.
–low ambient temperatures.
●The cold type spark plug is suitable when spark knock occurs with the standard type spark plug under
conditions such as.
–extended highway driving.
–frequent high engine revolution.
SMA010
Oil filter:
: 14.7 - 20.5 N·m (1.5 - 2.1 Kg-m, 11 - 15 ft-lb)
SMA229B
SEM294A
MakeNGK
Standard typeLFR5A-11
Hot typeLFR4A-11
Cold typeLFR6A-11

ENGINE MAINTENANCE (QR20DE·QR25DE)
MA-25
C
D
E
F
G
H
I
J
K
MA
B
MA
Check plug gap of each spark plug. Adjust or replace if necessary.
●Use a wire brush for cleaning, if necessary.
INSTALLATION
Install in the reverse order of removal.
Checking EVAP Vapor LinesELS000K2
1. Visually inspect EVAP vapor lines for improper attachment and for cracks, damage, loose connections,
chafing and deterioration.
2. Inspect fuel tank filler cap vacuum relief valve for clogging, sticking, etc.
Refer to EC-747, "
EVAPORATIVE EMISSION LINE DRAWING" (QR25DE), EC-1113, "EVAPORATIVE
EMISSION LINE DRAWING" (QR20DE). Spark plug gap: 1.0 - 1.1 mm (0.039 - 0.043 in)
SMA476
Spark plug:
: 19.6 - 29.4 N·m (2.0 - 3.0 kg-m, 15 - 21 ft-lb)

MA-26
ENGINE MAINTENANCE (YD22DDTI)
ENGINE MAINTENANCE (YD22DDTI)
PFP:00100
Checking Drive BeltsELS000CC
●Before inspecting the engine, make sure the engine has cooled
down; wait approximately 30 minutes after the engine has been
stopped.
●Visually inspect all belts for wear, damage or cracks on contact-
ing surfaces and edge areas.
●When measuring deflection, apply 98 N (10 kg, 22 lb) at the
marked point ( ).
CAUTION:
●When checking belt deflection immediately after installa-
tion, first adjust it to the specified value. Then, after turn-
ing the crankshaft two turns or more, re-adjust to the
specified value to avoid variation in deflection between
pulleys.
●Tighten idler pulley lock nut by hand and measure deflection without looseness.
Belt Deflection:
*: When engine is cold.
Tension AdjustmentELS000K5
Adjust belts with the parts shown below.
CAUTION:
●When a new belt is installed as a replacement, adjust it to the value specified under “New” value
because of insufficient adaptability with pulley grooves.
●If the belt deflection of the current belt is out of the “Limit for re-adjusting”, adjust to the
“Adjusted” value.
●When checking belt deflection immediately after installation, first adjust it to the specified value.
Then, after turning crankshaft two turns or more, re-adjust it to the specified value to avoid varia-
tion in deflection between pulleys.
●Make sure the belts are fully fitted into the pulley grooves during installation.
●Handle with care to avoid smearing the belts with engine oil or cooling water etc.
●Do not twist or bend the belts with strong force.
PBIC1251E
Applied beltBelt deflection with 98 N (10 kg, 22 lb) force applied* mm (in)
New Adjusted Limit for re-adjusting
Air conditioner compressor belt 4 - 5 (0.16 - 0.20) 6 - 7 (0.24 - 0.28) 8.5 (0.335)
Alternator and water pump belt 9.0 - 10.5 (0.354 - 0.413) 11.0 - 12.5 (0.433 - 0.492) 16.5 (0.650)
Applied belt Belt adjustment method
Air conditioner compressor belt Adjusting bolt on idler pulley
Alternator and water pump belt Adjusting bolt on alternator

ENGINE MAINTENANCE (YD22DDTI)
MA-27
C
D
E
F
G
H
I
J
K
MA
B
MA
AIR CONDITIONER COMPRESSOR BELT
1. Remove RH splash cover (with undercover attached).
2. Loosen idler pulley lock nut (A).
3. Turn adjusting bolt (B) to adjust.
●Refer to MA-26, "Checking Drive Belts" .
4. Tighten lock nut (A).
ALTERNATOR AND WATER PUMP BELT
1. Loosen adjusting lock nut (C).
2. Loosen alternator fixing bolts (D) (each on front and rear).
3. Turn adjusting bolt (E) to adjust.
●Refer to MA-26, "Tension Adjustment" .
4. Tighten nut (C) and bolt (D) in this order.
Changing Engine CoolantELS000CD
WARNING:
●To avoid being scalded, never change the engine coolant when the engine is hot.
●Wrap a thick cloth around cap and carefully remove the cap. First, turn the cap a quarter of a turn
to release built-up pressure. Then turn the cap all the way.
DRAINING ENGINE COOLANT
1. Open radiator drain plug at the bottom of radiator, and remove
radiator cap.
●Be careful not to allow engine coolant to contact drive
belts.
●Cover the exhaust tube heat shield to prevent from splashing
engine coolant.Nut A:
: 31 - 39 N-m (3.1 - 4.0 kg-m, 23 - 28 ft-lb)
PBIC1252E
Nut C:
: 19 - 24 N-m (1.9 - 2.5 kg-m, 14 - 18 ft-lb)
Bolt D:
: 44 - 57 N-m (4.4 - 5.9 kg-m, 32 - 42 ft-lb)
PBIC0236E

MA-28
ENGINE MAINTENANCE (YD22DDTI)
2. Open drain plug on cylinder block and air relief plug.
3. Remove reservoir tank, drain engine coolant, then clean reser-
voir tank.
4. Check drained engine coolant for contaminants such as rust,
corrosion or discoloration.
If contaminated, flush engine cooling system. Refer to MA-29,
"FLUSHING COOLING SYSTEM" .
REFILLING ENGINE COOLANT
1. Install reservoir tank, radiator drain plug and cylinder block drain plug.
●Apply sealant to the thread of cylinder block drain plug.
Use Genuine Liquid Gasket or equivalent.
2. Fill radiator slowly with engine coolant until engine coolant spills
from the air relief plugs, then install air relief plugs.
CAUTION:
If the filling rate is too fast, this could lead to air being
mixed in the engine coolant. Be sure to fill the engine cool-
ant slowly according to the rate indicated above.
●Replace the copper washer of the air bleeding plug.
●Use genuine Nissan anti-freeze engine coolant or equiva-
lent mixed with water (distilled or demineralized).
Refer to MA-16, "
RECOMMENDED FLUIDS AND LUBRICANTS".
●Pour engine coolant through engine coolant filler neck slowly of less than 2 (1-3/4 lmp qt) a
minute to allow air in system to escape.
SBIA0129E
SBIA0130E
Cylinder block drain plug:
: 7.8 - 11.8 N·m (0.8 -1.2 kg-m , 69 - 104 in-lb)
Air relief plug:
: 6.7 - 7.9 N·m (0.68 - 0.81 kg-m, 59 - 70 in-lb)
Engine coolant capacity (With reservoir tank):
9.5 (8-3/8 Imp qt)
SMA182B
Reservoir tank:
0.6 (1/2 lmp qt)