2001 NISSAN X-TRAIL sensor

INTAKE MANIFOLD
EM-17
[QR]
C
D
E
F
G
H
I
J
K
L
MA
EM
QR25DE
REMOVAL
WARNING:
To avoid the danger of being scalded, never drain the coolant when the engine is hot.
1. Disconnect mass air flow sensor harness connector from mass air flow sensor and clamp.
2. Release fuel pressure. Refer to EC-775, "
FUEL PRESSURE RELEASE" [QR20DE (WITH EURO-OBD)],
EC-1139, "
FUEL PRESSURE RELEASE" [QR20DE (WITHOUT EURO-OBD)], EC-42, "FUEL PRES-
SURE RELEASE" [QR25DE (WITH EURO-OBD)] or EC-452, "FUEL PRESSURE RELEASE" [QR25DE
(WITHOUT EURO-OBD)].
3. Remove air cleaner case and air duct assembly. Refer to EM-14, "
AIR CLEANER AND AIR DUCT" .
4. Drain coolant when engine is cooled. Refer to CO-9, "
DRAINING ENGINE COOLANT" .
SBIA0229E
1. Bracket 2. PCV hose 3. Intake manifold collector
4. Gasket 5. Electric throttle control actuator 6. Intake manifold support
7.EVAP canister purge volume control
solenoid valve8. Vacuum hose 9. Intake manifold
10. Vacuum reservoir tank 11. VIAS control solenoid valve

EM-24
[QR]
EXHAUST MANIFOLD AND THREE WAY CATALYST
EXHAUST MANIFOLD AND THREE WAY CATALYST
PFP:14004
Removal and InstallationEBS00KND
REMOVAL
1. Remove heated oxygen sensors.
●Follow below steps to remove each heated oxygen sensor.
a. Remove engine undercover.
b. Disconnect harness connector of each heated oxygen sensor, and harness from bracket and middle
clamp.
c. Using heated oxygen sensor wrench, remove heated oxygen
sensors.
CAUTION:
●Be careful not to damage heated oxygen sensor.
●Discard any heated oxygen sensor which has been
dropped from a height of more than 0.5 m (19.7 in) onto a
hard surface such as a concrete floor; use a new one.
2. Remove exhaust manifold and three way catalyst assembly.
a. Remove exhaust manifold cover lower.
b. Remove exhaust front tube. Refer to EX-2, "
Removal and Instal-
lation" .
PBIC0279E
1.Exhaust manifold and three way cat-
alyst assembly2. Gasket 3. Exhaust manifold cover
4. Heated oxygen sensor 1 5. Heated oxygen sensor 2
KBIA0094E

EXHAUST MANIFOLD AND THREE WAY CATALYST
EM-25
[QR]
C
D
E
F
G
H
I
J
K
L
MA
EM
c. Remove exhaust manifold cover upper.
d. Loosen nuts in reverse order of illustration to remove exhaust
manifold and catalytic converter.
●Disregard the numerical order No. 6 and 7 when loosening.
3. Remove exhaust manifold and three way catalyst loosening nuts
in reverse order in the figure.
INSPECTION AFTER REMOVAL
Surface Distortion
Use a reliable straightedge and feeler gauge to check the flatness of
exhaust manifold fitting surface.
INSTALLATION
Install in the reverse order of removal paying attention to the following.
Exhaust Manifold Nuts
●Tighten nuts in the numerical order shown in the figure.
●No. 6 and 7 indicate double tightening of bolts No. 1 and 3.
Heated Oxygen Sensor
CAUTION:
Do not over torque the heated oxygen sensor. Doing so may cause damage to the heated oxygen sen-
sor, resulting in the MIL coming on.
KBIA0045E
Standard: 0.3 mm (0.012 in)
KBIA0046E
KBIA0045E

EM-46
[QR]
CAMSHAFT
CAMSHAFT
PFP:13001
Removal and InstallationEBS00LS2
CAUTION:
Apply new engine oil to parts marked in illustration before installation.
REMOVAL
The following procedure describes removing and installing camshaft without removing front cover. If the front
cover is removed or installed, removal of No. 1 camshaft bracket is easier before step 8. Installation is easier
after step 3. Regarding removal and installation of front cover, refer to EM-37, "
TIMING CHAIN" .
1. Release fuel pressure. Refer to EC-775, "
FUEL PRESSURE RELEASE" [QR20DE (WITH EURO-OBD)],
EC-1139, "
FUEL PRESSURE RELEASE" [QR20DE (WITHOUT EURO-OBD)], EC-42, "FUEL PRES-
SURE RELEASE" [QR25DE (WITH EURO-OBD)] or EC-452, "FUEL PRESSURE RELEASE" [QR25DE
(WITHOUT EURO-OBD)].
2. Remove parts listed below.
●Ignition coil; Refer to EM-29, "IGNITION COIL" .
●Rocker cover; Refer to EM-35, "ROCKER COVER" .
3. Remove power steering reservoir tank.
KBIA0244E
1. Camshaft bracket 2. Washer 3. Front cover
4. Chain guide 5. Chain tensioner 6. O-ring
7. Spring 8. Chain tensioner plunger 9.Intake valve timing control solenoid
valve
10. Intake valve timing control cover 11. Camshaft sprocket (EXH) 12. Camshaft sprocket (INT)
13. Valve lifter 14. Camshaft (EXH) 15. Camshaft (INT)
16. Camshaft position sensor (PHASE)

EM-48
[QR]
CAMSHAFT
c. Secure hexagonal part of camshaft with a tool such as a span-
ner. Loosen camshaft sprocket mounting bolts and remove the
camshaft sprockets.
CAUTION:
Do not rotate crankshaft or camshaft while timing chain is
removed. It causes interference between valve and piston.
NOTE:
Chain tension holding work is not necessary. Crank sprocket
and timing chain do not disconnect structurally while front cover
is attached.
8. Loosen mounting bolts in the reverse order shown in the figure,
and remove camshaft brackets and camshafts.
●Remove No. 1 camshaft bracket by slightly tapping it with a
soft tool such as a plastic hammer.
9. Remove valve lifter.
●Check mounting positions, and store them without mixing
them up.
INSTALLATION
1. Install valve lifter.
●Install them in the same positions they were in prior to removal.
2. Install camshaft.
●Distinction between intake and exhaust camshafts is per-
formed with a difference of shapes of rear end.
●Install camshafts so that dowel pins on the front side are posi-
tioned as shown in the figure.
KBIA0049E
SBIA0255E
Intake : Signal plate shape for camshaft position
(PHASE) sensor.
Exhaust : Cone end shape.
KBIA0246E
KBIA0051E

EM-70
[QR]
ENGINE ASSEMBLY
1. Release fuel pressure. Refer to EC-775, "FUEL PRESSURE RELEASE" [QR20DE (WITH EURO-OBD)],
EC-1139, "
FUEL PRESSURE RELEASE" [QR20DE (WITHOUT EURO-OBD)], EC-42, "FUEL PRES-
SURE RELEASE" [QR25DE (WITH EURO-OBD)] or EC-452, "FUEL PRESSURE RELEASE" [QR25DE
(WITHOUT EURO-OBD)].
2. Remove engine hood.
3. Drain engine coolant from radiator drain plug. Refer to CO-9, "
DRAINING ENGINE COOLANT" .
4. Remove the following parts.
●LH/RH undercovers
●LH/RH front wheels
●Battery
●Drive belts; Refer to EM-12, "REMOVAL" .
●Air duct and air cleaner case assembly; Refer to EM-14, "REMOVAL" .
●Alternator
●Radiator and radiator fan assembly; Refer to CO-11, "RADIATOR" .
5. Disconnect engine room harness from the engine side and set it aside for easier work.
6. Disconnect all the body-side vacuum hoses and air hoses at engine side.
Engine room LH
7. Disconnect fuel hose, and plug it to prevent fuel from draining. Refer to EM-16, "
INTAKE MANIFOLD"
8. Disconnect heater hose, and install plug it to prevent engine coolant from draining.
9. Disconnect select cable from transaxle (A/T models).
10. Remove clutch operating cylinder from transaxle, and move it aside (M/T models).
11. Disconnect shift cable from transaxle (M/T models).
Engine room RH
12. Remove engine coolant reservoir tank.
13. Remove air conditioner compressor with piping connected from engine. Temporarily secure it on body
with a rope to avoid putting load on it.
Vehicle underbody
14. Remove exhaust front tube.
15. Remove propeller shaft.
16. Remove steering shaft from steering gear.
17. Disconnect power steering fluid cooler piping at a point between body and engine.
18. Remove ABS sensor from brake caliper.
19. Remove brake caliper with piping connected from steering knuckle. Temporarily secure it on body with a
rope to avoid load on it.
20. Remove LH/RH suspensions from steering knuckle under strut.
Removal
21. Install engine slingers into front left of cylinder head and rear right of cylinder head.
●Use alternator bracket mounting bolt holes for the front side.
22. Lift with hoist and secure the engine in position.Slinger bolts:
Front
: 51.0 - 64.7 N·m (5.2 - 6.6 kg-m, 38 - 47 ft-lb)
Rear
: 24.5 - 31.4 N·m (2.5 - 3.2 kg-m, 18 - 23 ft-lb)
SBIA0271E

CYLINDER BLOCK
EM-73
[QR]
C
D
E
F
G
H
I
J
K
L
MA
EM
CYLINDER BLOCKPFP:11010
Disassembly and AssemblyEBS00KNU
KBIA0258E
1. Cylinder block 2. O-ring 3. Crankshaft position sensor (POS)
4. Knock sensor 5. Oil pressure switch 6. Lower cylinder block
7. Lower cylinder block bolt 8. Snap ring 9. Connecting rod
10. Connecting rod bearing 11. Connecting rod bearing cap 12. Connecting rod bolt
13. Piston 14. Oil ring 15. Second ring
16. Top ring 17. Piston pin 18. Thrust bearing
19. Main bearing upper 20. Crankshaft 21. Main bearing lower
22. Rear oil seal 23. Pilot convertor (A/T model) 24. Signal plate
25. Drive plate (A/T model) 26. Reinforce plate (A/T model) 27. Flywheel (M/T model)

CYLINDER BLOCK
EM-75
[QR]
C
D
E
F
G
H
I
J
K
L
MA
EM
●A commercial engine stand can be used.
NOTE:
This example is an engine stand for holding at transaxle
mounting side with the flywheel or drive plate removed.
3. Drain engine oil and engine coolant from inside of engine.
4. Remove the following components and associated parts.
●Exhaust manifold and three way catalyst assembly; Refer to
EM-24, "
EXHAUST MANIFOLD AND THREE WAY CATA-
LYST" .
●Intake manifold collector; Refer to EM-16, "INTAKE MANI-
FOLD" .
●Intake manifold and fuel tube assembly; Refer to EM-16, "INTAKE MANIFOLD" .
●Ignition coil; Refer to EM-29, "IGNITION COIL" .
●Rocker cover; Refer to EM-35, "ROCKER COVER" .
●Oil pan and oil strainer; Refer to EM-26, "OIL PAN AND OIL STRAINER" .
●Front cover, timing chain and balancer unit; Refer to EM-37, "TIMING CHAIN" .
●Camshaft; Refer to EM-46, "CAMSHAFT" .
●Cylinder head; Refer to EM-59, "CYLINDER HEAD" .
5. Remove knock sensor.
CAUTION:
Carefully handle the sensor avoiding shocks.
6. Remove crankshaft position sensor (POS).
CAUTION:
●Avoid impacts such as a dropping.
●Do not disassemble.
●Keep it away from metal particles.
●Do not place sensor close to magnetic materials.
7. Remove flywheel (M/T model) or drive plate (A/T model). Fix crankshaft with a stopper plate, and remove
mounting bolts.
Torx bit (size T55): Flywheel (M/T model)
Torx socket (size T55): Drive plate (A/T model)
CAUTION:
Be careful not to damage contact surface for the clutch disc
of the flywheel.
NOTE:
The flywheels, two block construction, allows movement in
response to transmission side pressure, or when twisted in its
rotational direction. Therefore, some amount of noise is normal.
PBIC0085E
SBIA0273E
KBIA0062E