2001 NISSAN X-TRAIL fuel pump

EM-178
[YD22DDTi]
PRIMARY TIMING CHAIN
b. Install four O-rings to the grooves of the cylinder block and fuel
supply pump bracket.
c. Install rear chain case.
●When installing, align the dowel pin with the pin hole.
d. Tighten bolts in the numerical order shown in the figure.
●Install the following four types of bolts, referring to the figure.
●The shank length under the bolt neck above is the length of
threaded part (pilot portion not included).
e. After tightening all the bolts, re-tighten in the same order.
2. Install power steering pump.
3. Install fuel supply pump.
●Before installing, make sure the notch on the fuel supply
pump flange and the hole 6 mm (0.24 in) in diameter on the
pump body are aligned.
4. Install chain guide and tension guides.
5. Install crankshaft sprocket, aligning it with the crankshaft key on
the far side.
6. Install primary timing chain with fuel supply pump sprocket.
●When installing, match the alignment marks on sprockets with
color coded alignment marks (colored links) on the chain.
●Install fuel supply pump sprocket washer with the surface
marked “F” (front mark) facing the front of the engine.
7. Install timing chain onto power steering pump sprocket and
through chain guide.
JEM141G
16 mm (0.63 in) : Bolt No. 1, 2, 16, 17, 18, 19, 20, 21, 22
20 mm (0.79 in) : Bolt No. 3, 4, 6, 9, 10, 11, 13, 14
25 mm (0.98 in) : Bolt No. 12, 15
35 mm (1.38 in) : Bolt No. 5, 7, 8
SBIA0211E
SBIA0210E
JEM136G

PRIMARY TIMING CHAIN
EM-179
[YD22DDTi]
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8. Use the positioning stopper pin (SST) to hold the fuel supply
pump sprocket and install the bolt.
●Using a TORX wrench (SST), turn the pump shaft little by little
to adjust the position of the pump flange. Insert positioning
stopper pin (SST) into the hole 6 mm (0.24 in) in diameter on
the fuel supply pump sprocket so that the stopper pin goes
through the pump flange to the pump body. While the stopper
pin is in place, install the bolt.
9. Install timing chain slack guide.
10. Install chain tensioner.
●Push the plunger of the chain tensioner. While keeping
plunger pressed down with a push pin, etc., install the chain
tensioner.
●After installation, pull out the push pin holding the plunger.
●Check again that the alignment marks on the sprockets
and the colored alignment marks on timing chain are
aligned.
11. Install front oil seal to oil pump housing.
●Using a suitable drift [62 mm (2.44 in) dia.], force fit the seal
until it hits the bottom.
●Do not touch lips of oil seal. Make sure seal surfaces are
free of foreign materials.
12. Install chain case cover (for opening for power steering pump
removal/installation) to oil pump.
●Apply a continuous bead of Genuine Liquid Gasket or equiva-
lent as shown in the figure. Refer to EM-111, "
Precautions For
Liquid Gasket" .
●Apply liquid gasket on oil pump-side surface.
SBIA0208E
PBIC0945E
JEM134G
JEM142G
JEM143G

EM-182
[YD22DDTi]
CYLINDER HEAD
CYLINDER HEAD
PFP:11041
On-Vehicle ServiceEBS00LRV
CHECKING COMPRESSION PRESSURE
1. Warm up engine thoroughly. Then, stop it.
2. Using CONSULT-II, make sure no error codes are indicated for self-diagnosis items. Refer to EC-1412,
"Basic Inspection" .
●Do not disconnect CONSULT-II until the end of this operation; it will be used to check engine rpm and
for error detection at the end of this operation.
3. Disconnect the negative battery terminal.
4. Remove charge air cooler. Refer to EM-122, "
Removal and Installation"
5. To prevent fuel from being injected during inspection, remove
fuel supply pump fuse [ENG CONT (20A)] from fuse box on the
left side of engine compartment.
●Among marks on fuse box, [ENG CONT 2 (20A)] is for fuel
supply pump fuse.
6. Remove glow plugs from all the cylinders. Refer to EM-138,
"Removal and Installation" .
CAUTION:
●Before removal, clean the surrounding area to prevent
entry of any foreign materials into the engine.
●Carefully remove glow plugs to prevent any damage or
breakage.
●Handle with care to avoid applying any shock to glow plugs.
7. Install adapter to installation holes of glow plugs and connect
compression gauge for diesel engine.
8. Connect battery negative terminal.
9. Set the ignition switch to “START” and crank. When gauge
pointer stabilizes, read compression pressure and engine rpm.
Repeat the above steps for each cylinder.
●Always use a fully-charged battery to obtain specified engine
speed.
Compression pressure
Unit: kPa (bar, kg/cm2 , psi)/rpm
●When engine rpm is out of the specified range, check the specific gravity of battery liquid. Measure
again under corrected conditions.
●If engine rpm exceeds the limit, check valve clearance and combustion chamber components (valves,
valve seats, cylinder head gaskets, piston rings, pistons, cylinder bores, cylinder block upper and lower
surfaces) and measure again.
●If compression pressure is low in some cylinders, apply engine oil from glow plug installation hole. Then
check pressure again.
–If compression pressure becomes normal after applying engine oil, piston ring may be worn or dam-
aged. Check piston ring for malfunction. If any, replace piston ring.
–If compression pressure is still low after applying engine oil, valve may be malfunctioning. Check valve
for malfunction. If contact malfunction is found, replace valve or valve seat.
●If compression pressure in adjacent two cylinders is low after applying engine oil, pressure may be
leaking from gasket. In this case, replace cylinder head gasket.
10. Complete this operation as follows:
PBIC0680E
: 18 - 21 N·m (1.8 - 2.2 kg-m, 13 - 15 ft-lb)
SEM112G
Standard Minimum Difference limit between cylinders
2,893 (28.9, 29.5, 419)/200 2,452 (24.52, 25.0, 356)/200 490 (4.90, 5.0, 71)/200

CYLINDER HEAD
EM-183
[YD22DDTi]
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a. Turn the ignition switch to “OFF”.
b. Disconnect battery negative terminal.
c. Install glow plug and install all the parts removed in step 4.
d. Install fuel supply pump fuse [ENG CONT (20A)].
e. Connect battery negative terminal.
f. Using CONSULT-II make sure no error code is indicated for items of self-diagnosis.
Removal and InstallationEBS00LRW
CAUTION:
Apply new engine oil to parts marked in illustration before installation.
REMOVAL
1. Drain engine coolant. Refer to CO-29, "Changing Engine Coolant" .
2. Remove the following parts:
●Charge air cooler (Refer to EM-122, "Removal and Installation" .)
●Rocker cover (Refer to EM-156, "Removal and Installation" .)
●Air cleaner and air duct (Refer to EM-120, "Removal and Installation" .)
●Vacuum pump (Refer to EM-139, "Removal and Installation" .)
●Injection tube, spill tube and fuel injector (Refer to EM-144, "Removal and Installation" .)
●Intake manifold (Refer to EM-123, "Removal and Installation" .)
●Exhaust manifold and Turbocharger (Refer to EM-127, "Removal and Installation" .)
●Secondary timing chain (Refer to EM-167, "Removal and Installation" .)
●Camshaft (Refer to EM-158, "Removal and Installation" .)
SBIA0193E
1. Glow plug 2. Cylinder head assembly 3. Cylinder head bolt
4. Thermal transmitter 5. Engine coolant temperature sensor 6. Gasket
7. Water outlet 8. Glow plate

CYLINDER BLOCK
EM-199
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e. Hoist engine and install it to the engine stand.
NOTE:
It is possible to set engine sub-attachment and engine attach-
ment to engine stand at first, then install engine later.
●Commercial engine stand can be used.
NOTE:
The figure shows an example of general-purpose engine
stand that can hold mating surface of transmission with drive
plate and rear plate removed.
5. Drain engine oil and engine coolant from inside engine.
6. Remove the following parts and related parts. (Only major parts are listed.)
●Intake manifold (Refer to EM-123, "Removal and Installation" .)
●Exhaust manifold and Turbocharger (Refer to EM-127, "Removal and Installation" .)
●Rocker cover (Refer to EM-156, "Removal and Installation" .)
●Injection tube and fuel injector (Refer to EM-144, "Removal and Installation" .)
●Oil pan and oil strainer (Refer to EM-133, "Removal and Installation" .)
●Water pump (Refer to CO-39, "WATER PUMP" .)
●Thermostat and water piping (Refer to CO-41, "THERMOSTAT AND WATER PIPING" .)
●Vacuum pump and vacuum pipe (Refer to EM-139, "Removal and Installation" .)
●Secondary timing chain (Refer to EM-167, "Removal and Installation" .)
●Primary timing chain (Refer to EM-172, "Removal and Installation" .)
●Fuel supply pump (Refer to EM-147, "Removal and Installation" .)
●Camshaft (Refer to EM-158, "Removal and Installation" .)
●Cylinder head (Refer to EM-183, "Removal and Installation" .)
●Oil cooler (Refer to LU-25, "OIL COOLER" .)
●Accessory, accessory bracket and mount brackets
7. Remove fuel supply pump bracket.
8. Remove rear oil seal retainer.
JEM193G
PBIC0085E

CYLINDER BLOCK
EM-205
[YD22DDTi]
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17. Install rear oil seal and retainer assembly.
●Apply a continuous bead of liquid gasket to rear oil seal and
retainer assembly as shown in the figure.
18. Press fit pilot bushing into flywheel.
●Using drift with outer diameter of 19 mm (0.75 in), press fit
pilot bushing until it stops.
19. Install fuel supply pump bracket.
●Align the bracket with the dowel pins on the block to install.
●The two bolts used for dowel pins have a longer shanks than
the other two.
20. Install parts to the engine in the reverse order of disassembly.
21. Remove engine from engine stand in the reverse order of
assembly.
22. Install flywheel.
●When installing flywheel to crankshaft, be sure to correctly
align crankshaft side dowel pin and flywheel side dowel pin-
hole.
JEM233G
JEM234G
PBIC0762E
PBIC0952E

EM-230
[YD22DDTi]
SERVICE DATA AND SPECIFICATIONS (SDS)
Common rail51.0 - 64.0 (5.2 - 6.5, 38 - 47)
Fuel supply pump51.0 - 56.0 (5.2 - 5.7, 38 - 41)
Fuel supply pump sprocket 37.0 - 41.0 (3.8 - 4.2, 28 - 30)
Fuel supply pump rear bracket 27.0 - 37.0 (2.8 - 3.8, 20 - 27)
Front chain case
6.9 - 8.8 (0.7 - 0.9, 61 - 78)*
2
Chain tensioner
8.5 - 10.7 (0.86 - 1.1, 75 - 95)*2
Tension guide21.0 - 26.0 (2.1 - 2.7, 16 - 19)
Slack guide21.0 - 26.0 (2.1 - 2.7, 16 - 19)
Camshaft sprocket 138 - 147 (14.0 - 15.0, 102 - 108)
Fuel supply pump sprocket 38.0 - 41.0 (3.8 - 4.2, 28 - 30)
Oil pump12.0 - 13.0 (1.3 - 1.4, 9 - 10)
Power steering pump51.0 - 56.0 (5.2 - 5.8, 38 - 41)
Rear chain case12.0 - 13.0 (1.2 - 1.4, 19 - 10)
Engine coolant temperature sensor 12.0 - 15.0 (1.2 - 1.6, 9 - 11)
*1 Cylinder head 1) 29 - 38 (2.9 - 3.9, 21 - 28)
2) 180° to 185°
3) 0 (0, 0)
4) 35 to 44 (3.5 - 4.5, 26 - 32)
5) 90° to 95°(angle tightening)
6) 90° to 95° (angle tightening)
Water outlet21 - 28 (2.1 - 2.9, 16 - 20)
Glow plug18.0 - 21.0 (1.8 - 2.2, 13 - 15)
*1 Flywheel103 - 112 (10.5 - 11.5, 76 - 83)
Oil pressure switch13.0 - 17.0 (1.25 - 1.75, 9 - 12)
Oil jet6.1 - 10.7(0.62 - 1.1, 54 - 95)
Oil jet relief valve40 - 58 (4.0 - 6.0, 29 - 43)
Rear oil seal retainer12.0 - 13.0 (1.2 - 1.4, 9 - 10)

EC-5
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ECA Wiring Diagram .................................................... 342
Diagnostic Procedure ........................................... 343
DTC P1706 PNP SWITCH ...................................... 345
Component Description ........................................ 345
CONSULT-II Reference Value in Data Monitor Mode
. 345
ECM Terminals and Reference Value .................. 345
On Board Diagnosis Logic ................................... 345
DTC Confirmation Procedure ............................... 345
Overall Function Check ........................................ 346
Wiring Diagram .................................................... 347
Diagnostic Procedure ........................................... 348
DTC P1805 BRAKE SWITCH ................................ 349
Description ........................................................... 349
CONSULT-II Reference Value in Data Monitor Mode
. 349
ECM Terminals and Reference Value .................. 349
On Board Diagnosis Logic ................................... 349
DTC Confirmation Procedure ............................... 349
Wiring Diagram .................................................... 351
Diagnostic Procedure ........................................... 352
Component Inspection ......................................... 353
DTC P2122, P2123 APP SENSOR ........................ 355
Component Description ........................................ 355
CONSULT-II Reference Value in Data Monitor Mode
. 355
ECM Terminals and Reference Value .................. 355
On Board Diagnosis Logic ................................... 356
DTC Confirmation Procedure ............................... 356
Wiring Diagram .................................................... 357
Diagnostic Procedure ........................................... 358
Component Inspection ......................................... 360
Remove and Installation ....................................... 360
DTC P2127, P2128 APP SENSOR ........................ 361
Component Description ........................................ 361
CONSULT-II Reference Value in Data Monitor Mode
. 361
ECM Terminals and Reference Value .................. 361
On Board Diagnosis Logic ................................... 362
DTC Confirmation Procedure ............................... 362
Wiring Diagram .................................................... 363
Diagnostic Procedure ........................................... 364
Component Inspection ......................................... 366
Remove and Installation ....................................... 366
DTC P2135 TP SENSOR ........................................ 367
Component Description ........................................ 367
CONSULT-II Reference Value in Data Monitor Mode
. 367
ECM Terminals and Reference Value .................. 367
On Board Diagnosis Logic ................................... 368
DTC Confirmation Procedure ............................... 368
Wiring Diagram ................................................
.... 369
Diagnostic Procedure ........................................... 370
Component Inspection ......................................... 372
Remove and Installation ....................................... 372
DTC P2138 APP SENSOR ..................................... 373
Component Description ........................................ 373
CONSULT-II Reference Value in Data Monitor Mode
. 373ECM Terminals and Reference Value ...................373
On Board Diagnosis Logic ....................................374
DTC Confirmation Procedure ...............................374
Wiring Diagram .....................................................375
Diagnostic Procedure ...........................................376
Component Inspection ..........................................378
Remove and Installation .......................................378
IGNITION SIGNAL ..................................................379
Component Description ........................................379
ECM Terminals and Reference Value ...................379
Wiring Diagram .....................................................380
Diagnostic Procedure ...........................................382
Component Inspection ..........................................386
Removal and Installation ......................................387
INJECTOR CIRCUIT ...............................................388
Component Description ........................................388
CONSULT-II Reference Value in Data Monitor Mode
.388
ECM Terminals and Reference Value ...................388
Wiring Diagram .....................................................389
Diagnostic Procedure ...........................................390
Component Inspection ..........................................392
Removal and Installation ......................................392
VIAS ........................................................................393
Description ............................................................393
CONSULT-II Reference Value in Data Monitor Mode
.394
ECM Terminals and Reference Value ...................394
Wiring Diagram .....................................................395
Diagnostic Procedure ...........................................396
Component Inspection ..........................................399
Removal and Installation ......................................400
START SIGNAL ......................................................401
CONSULT-II Reference Value in Data Monitor Mode
.401
ECM Terminals and Reference Value ...................401
Wiring Diagram .....................................................402
Diagnostic Procedure ...........................................403
FUEL PUMP CIRCUIT ............................................405
Description ............................................................405
CONSULT-II Reference Value in Data Monitor Mode
.405
ECM Terminals and Reference Value ..................
.405
Wiring Diagram .....................................................407
Diagnostic Procedure ...........................................408
Component Inspection ..........................................410
Removal and Installation ......................................411
REFRIGERANT PRESSURE SENSOR ..................412
Component Description ........................................412
ECM Terminals and Reference Value ...................412
Wiring Diagram .....................................................413
Diagnostic Procedure ...........................................414
Removal and Installation ......................................415
ELECTRICAL LOAD SIGNAL ................................416
CONSULT-II Reference Value in Data Monitor Mode
.416
ECM Terminals and Reference Value ...................416
Wiring Diagram .....................................................417
Diagnostic Procedure ...........................................419