ECU NISSAN TEANA 2003 Service Manual

CYLINDER BLOCK
EM-83
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A widely use engine stand can be used.
CAUTION:
Use engine stand that has a load capacity [approximately
150 kg (331 lb) or more] large enough for supporting the
engine weight.
NOTE:
This example is an engine stand for holding at transaxle
mounting side with drive plate removed.
3. Drain engine oil. Refer to LU-9, "
Changing Engine Oil" .
4. Drain engine coolant by removing water drain plug from inside of
engine.
5. Remove cylinder head. Refer to EM-65, "
CYLINDER HEAD" .
6. Remove knock sensor.
CAUTION:
Carefully handle knock sensor avoiding shocks.
7. 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 in a location where it is exposed to
magnetism.
8. Remove drive plate.

Secure drive plate with stopper plate, and remove mounting
bolts.
NOTE:
Use TORX socket (size E20).
CAUTION:
Be careful not to damage or scratch drive plate.
PBIC0085E
PBIC2443E
PBIC2191E
PBIC2352E

EM-90
[QR]
CYLINDER BLOCK


Using piston ring compressor (SST) or suitable tool, install
piston with the front mark on the piston head facing the front
of the engine.
CAUTION:
Be careful not to damage the cylinder wall and crankshaft
pin, resulting from an interference of the connecting rod
big end.
13. Install connecting rod cap.

Match the stamped cylinder number marks on connecting rod
with those on connecting rod cap to install.
14. Tighten connecting rod bolts with the following procedure:
a. Apply new engine oil to the threads and seats of connecting rod bolts.
b. Tighten bolts.
c. Then turn all bolts 90 degrees clockwise (Angle tightening).
CAUTION:
Check and confirm the tightening angle by using angle
wrench (SST) or protractor. Avoid judgement by visual
inspection without the tool.

After tightening connecting rod bolts, make sure that crankshaft rotates smoothly.

Check the connecting rod side clearance. Refer to EM-99, "CONNECTING ROD SIDE CLEARANCE" .
15. Install drive plate.

Secure drive plate with stopper plate, and tighten mounting bolts crosswise over several times.
PBIC1619E
PBIC2196E
: 19.6 N·m (2.0 kg-m, 14 ft-lb)
KBIA0068E

EM-146
[VQ]
OIL PAN AND OIL STRAINER

CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
3. Remove the following:

Engine cover; Refer to EM-133, "INTAKE MANIFOLD COLLECTOR" .

Splash guard (RH)

Exhaust front tube; Refer to EX-2, "EXHAUST SYSTEM" .

Drive belts; Refer to EM-128, "DRIVE BELTS" .
4. Remove A/C compressor with piping connected, and temporarily secure it to aside. Refer to ATC-133,
"Components" .
5. Remove three way catalysts (right and left banks) from exhaust manifolds (right and left banks). Refer to
EM-140, "
EXHAUST MANIFOLD AND THREE WAY CATALYST" .
6. Remove oil pressure switch. Refer to LU-20, "
OIL PRESSURE CHECK" .
7. Remove crankshaft position sensor (POS).
CAUTION:

Handle carefully to avoid dropping and shocks.

Do not disassemble.

Do not allow metal powder to adhere to magnetic part at sensor tip.

Do not place sensor in a location where it is exposed to magnetism.
8. Remove oil filter. Refer to LU-22, "
OIL FILTER" .
9. Remove oil cooler and water pipes (VQ35DE). Refer to LU-23, "
OIL COOLER (VQ35DE)" .
10. Remove oil pan (lower) as follows:
a. Loosen mounting bolts in the reverse order as shown in the fig-
ure.
b. Insert seal cutter (SST) between oil pan (lower) and oil pan
(upper).
CAUTION:

Be careful not to damage the mating surfaces.

Do not insert screwdriver, this will damage the mating
surfaces.
c. Slide seal cutter by tapping on the side of the tool with hammer.
Remove oil pan (lower).
PBIC0782E
SEM365ED

EM-158
[VQ]
FUEL INJECTOR AND FUEL TUBE

CAUTION:

Upper and lower O-rings are different. Be careful not to confuse them.

Handle O-ring with bare hands. Do not wear gloves.

Lubricate O-ring with new engine oil.

Do not clean O-ring with solvent.

Make sure that O-ring and its mating part are free of foreign material.

When installing O-ring, be careful not to scratch it with tool or fingernails. Also be careful not to
twist or stretch O-ring. If O-ring was stretched while it was being attached, do not insert it
quickly into fuel tube.

Insert O-ring straight into fuel injector. Do not decenter or twist it.
3. Install fuel injector to fuel tube as follows:
a. Insert clip into clip mounting groove on fuel injector.

Insert clip so that protrusion “A” of fuel injector matches cut-
out“A” of clip.
CAUTION:

Do not reuse clip. Replace it with new one.

Be careful to keep clip from interfering with O-ring. If
interference occurs, replace O-ring.
b. Insert fuel injector into fuel tube with clip attached.

Insert it while matching it to the axial center.

Insert fuel injector so that protrusion “B” of fuel tube matches
cutout “B” of clip.

Make sure that fuel tube flange is securely fixed in flange fix-
ing groove on clip.
c. Make sure that installation is complete by checking that fuel
injector does not rotate or come off.

Make sure that protrusions of fuel injectors are aligned with
cutouts of clips after installation.
4. Install spacers on intake manifold.
5. Install fuel tube and fuel injector assembly to intake manifold
CAUTION:
Be careful not to let tip of injector nozzle come in contact with other parts.

Tighten mounting bolts in two steps in numerical order as
shown in the figure.Fuel tube side
VQ23DE : Black
VQ35DE : Blue
Nozzle side
VQ23DE : Green
VQ35DE : Brown
PBIC2545E
1st step
: 10.1 N·m (1.0 kg-m, 7 ft-lb)
2nd step
: 23.6 N·m (2.4 kg-m, 17 ft-lb)
SEC999C

FRONT TIMING CHAIN CASE
EM-163
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FRONT TIMING CHAIN CASEPFP:13599
Removal and InstallationBBS004VZ
NOTE:

This section describes removal/installation procedure of front timing chain case and timing chain related
parts without removing oil pan (upper) on vehicle.

When oil pan (upper) needs to be removed or installed, or when rear timing chain case is removed or
installed, remove oil pans (lower and upper) first. Then remove front timing chain case, timing chain
related parts, and rear timing chain case in this order, and install in the reverse order of removal. Refer to
EM-173, "
TIMING CHAIN" .

Refer to EM-173, "TIMING CHAIN" for component parts location.
REMOVAL
1. Remove engine cover. Refer to EM-133, "INTAKE MANIFOLD COLLECTOR" .
2. Remove air duct (inlet), air cleaner case (upper) with mass air flow sensor and air duct assembly. Refer to
EM-131, "
AIR CLEANER AND AIR DUCT" .
3. Remove undercover and splash guard (RH).
4. Remove right side front road wheel and tire.
5. Drain engine oil. Refer to LU-21, "
Changing Engine Oil" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine oil on drive belts.
6. Drain engine coolant from radiator. Refer to CO-34, "
Changing Engine Coolant" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
7. Remove intake manifold collectors (upper and lower). Refer to EM-133, "
INTAKE MANIFOLD COLLEC-
TOR" .
8. Remove drive belts. Refer to EM-128, "
DRIVE BELTS" .
9. Remove alternator. Refer to SC-27, "
CHARGING SYSTEM" .
10. Remove power steering oil pump from bracket with piping connected, and temporarily secure it to aside.
Refer to PS-29, "
POWER STEERING OIL PUMP" .
11. Remove power steering oil pump bracket. Refer to PS-29, "
POWER STEERING OIL PUMP" .
12. Remove idler pulley and bracket. Refer to EM-173, "
TIMING CHAIN" .
13. Separate engine harnesses removing their brackets from front timing chain case.
14. Remove rocker covers (right and left bank). Refer to EM-160, "
ROCKER COVER" .
NOTE:
When only timing chain (primary) is removed, rocker cover does not need to be removed.
15. Obtain No. 1 cylinder at TDC of its compression stroke as follows:
NOTE:
When timing chain is not removed/installed, this step is not required.
a. Rotate crankshaft pulley clockwise to align timing mark (grooved
line without color) with timing indicator.
SEM918G

FRONT TIMING CHAIN CASE
EM-165
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Loosen mounting bolts in the reverse order as shown in the
figure.

U s e s e a l c u t t e r [ S S T: K V 1 0 1111 0 0 ] o r e q u i v a l e n t t o o l t o c u t
liquid gasket for removal.
CAUTION:
Shaft is internally jointed with camshaft sprocket (INT) cen-
ter hole. When removing, keep it horizontal until it is com-
pletely disconnected.
22. Remove collared O-rings from front timing chain case oil holes
(left and right sides).
23. Remove engine mounting insulator (RH) and engine mounting bracket (RH). Refer to EM-223, "
ENGINE
ASSEMBLY" .
24. Raise engine front side with jack. (This secures workspace to remove front timing chain case.)
25. Remove front timing chain case as follows:
a. Loosen mounting bolts in the reverse order as shown in the fig-
ure.
b. Insert suitable tool into the notch at the top of front timing chain
case as shown (1).
c. Pry off case by moving tool as shown (2).

U s e s e a l c u t t e r [ S S T: K V 1 0 1111 0 0 ] t o c u t l i q u i d g a s k e t f o r
removal.
CAUTION:

Do not use screwdriver or something similar.

After removal, handle front timing chain case carefully so
it does not tilt, cant, or warp under a load.
PBIC0918E
PBIC2631E
SEM730G
SEM156F

EM-178
[VQ]
TIMING CHAIN

b. Remove camshaft sprockets (INT and EXH) mounting bolts.

Secure the hexagonal portion of camshaft using wrench to
loosen mounting bolts.
CAUTION:
Do not loosen mounting bolts with securing anything
other than the camshaft hexagonal portion or with ten-
sioning the timing chain.
c. Remove timing chain (secondary) together with camshaft sprockets.

Turn camshaft slightly to secure slackness of timing chain on timing chain tensioner (secondary) side.

Insert 0.5 mm (0.020 in)-thick metal or resin plate between
timing chain and timing chain tensioner plunger (guide).
Remove timing chain (secondary) together with camshaft
sprockets with timing chain loose from guide groove.
CAUTION:
Be careful of plunger coming-off when removing timing
chain (secondary). This is because plunger of timing
chain tensioner (secondary) moves during operation,
leading to coming-off of fixed stopper pin.
NOTE:
Camshaft sprocket (INT) is two-for-one structure of sprockets
for timing chain (primary) and for timing chain (secondary).

When handling camshaft sprocket (INT), be careful of the fol-
lowing caution:
CAUTION:

Handle carefully to avoid any shock to camshaft
sprocket.

Do not disassemble. (Do not loosen bolts “A” as
shown in the figure).
22. Remove water pump. Refer to CO-46, "
WATER PUMP" .
23. Remove rear timing chain case as follows:
a. Loosen and remove mounting bolts in the reverse order as
shown in the figure.
b . C u t l i q u i d g a s k e t u s i n g s e a l c u t t e r [ S S T: K V 1 0 1111 0 0 ] a n d
remove rear timing chain case.
KBIA1698J
PBIC1978E
PBIC2980E
SEM735G

TIMING CHAIN
EM-185
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c. After confirming the mating marks are aligned, tighten camshaft
sprocket mounting bolts.

Secure camshaft using wrench at the hexagonal portion to
tighten mounting bolts.
d. Pull stopper pins out from timing chain tensioners (secondary).
6. Install tension guide.
7. Install timing chain (primary) as follows:
a. Install crankshaft sprocket.

Make sure the mating marks on crankshaft sprocket face the
front of engine.
b. Install timing chain (primary).
KBIA1698J
SEM923G
SEM929E

TIMING CHAIN
EM-187
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CAUTION:
Do not overtighten slack guide mounting bolt. It is normal
for a gap to exist under the bolt seat when mounting bolt is
tightened to specification.
9. Install the timing chain tensioner (primary) with the following procedure:
a. Pull plunger stopper tab up (or turn lever downward) so as to
remove plunger stopper tab from the ratchet of plunger.
NOTE:
Plunger stopper tab and lever are synchronized.
b. Push plunger into the inside of tensioner body.
c. Hold plunger in the fully compressed position by engaging
plunger stopper tab with the tip of ratchet.
d. To secure lever, insert stopper pin through hole of lever into ten-
sioner body hole.

The lever parts and the tab are synchronized. Therefore, the
plunger will be secured under this condition.
NOTE:
Figure shows the example of 1.2 mm (0.047 in) diameter thin screwdriver being used as the stopper pin.
e. Install timing chain tensioner (primary).

Remove any dirt and foreign materials completely from the
back and the mounting surfaces of timing chain tensioner (pri-
mary).
f. Pull out stopper pin after installing, and then release plunger.
10. Make sure again that the mating marks on each sprocket and each timing chain have not slipped out of
alignment.
11. Install new O-rings on rear timing chain case.
12. Install new front oil seal on front timing chain case.

Apply new engine oil to both oil seal lip and dust seal lip.
PBIC2633E
PBIC3568E
PBIC3569E
PBIC2548E

EM-224
[VQ]
ENGINE ASSEMBLY


Do not start working until exhaust system and engine coolant are cool enough.

If items or work required are not covered by the engine section, refer to the applicable sections.

Always use the support point specified for lifting.

Use either 2-pole lift type or separate type lift as best you can. If board-on type is used for
unavoidable reasons, support at the rear axle jacking point with transmission jack or similar tool
before starting work, in preparation for the backward shift of center of gravity.

For supporting points for lifting and jacking point at rear axle, refer to GI-37, "Garage Jack and
Safety Stand and 2-Pole Lift" .
REMOVAL
Outline
At first, remove engine and transaxle assembly with front suspension member from vehicle downward. Sepa-
rate front suspension member, and then separate engine from transaxle.
Preparation
1. Release fuel pressure. Refer to EC-392, "FUEL PRESSURE RELEASE" .
2. Drain engine coolant from radiator. Refer to CO-34, "
Changing Engine Coolant" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
3. Remove the following parts:

Engine cover; Refer to EM-133, "INTAKE MANIFOLD COLLECTOR" .

Hood assembly; Refer to BL-13, "HOOD" .

Front road wheels and tires.

Undercover and splash guards (RH and LH).

Air duct (inlet), air cleaner case (upper) with mass air flow sensor and air duct assembly; Refer to EM-
131, "AIR CLEANER AND AIR DUCT" .

Battery, battery tray and battery tray bracket; Refer to SC-4, "BATTERY" .

Drive belts; Refer to EM-128, "DRIVE BELTS" .

Radiator, reservoir of radiator; Refer to CO-37, "RADIATOR" .

Front wiper arm; Refer to WW-4, "FRONT WIPER AND WASHER SYSTEM" .

Cowl top cover. Refer to EI-21, "COWL TOP" .
4. Disconnect engine room harness at the ECM side.
CAUTION:
To keep clean harness connector and avoid damage and foreign materials, cover them completely
with plastic bags or something similar.
Engine Room
1. Disconnect heater hoses. Refer to CO-52, "WATER OUTLET AND WATER PIPING" .

Install plug to avoid leakage of engine coolant.
2. Remove EVAP hose. Refer to EM-133, "
INTAKE MANIFOLD COLLECTOR" .
3. Disconnect fuel feed hose (with fuel damper) quick connector at centralized under-floor piping side. Refer
to EM-155, "
FUEL INJECTOR AND FUEL TUBE" .

Install plug to avoid leakage of fuel.
4. Disconnect shift control cable at transaxle side. Refer to AT- 2 1 3 , "
SHIFT CONTROL SYSTEM" .
5. Disconnect brake booster vacuum hose at engine side. Refer to EM-133, "
INTAKE MANIFOLD COLLEC-
TOR" .
6. Remove IPDM E/R mounting bolt and IPDM E/R bracket mounting bolts, and move it to aside. Refer to
PG-17, "
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)" .
7. Remove alternator. Refer to SC-27, "
CHARGING SYSTEM" .
8. Remove A/C compressor with piping connected, and temporarily secure it to aside. Refer to ATC-133,
"Components" .
9. Disconnect suction hoses of power steering oil pump at reservoir tank side.

Install plug to avoid leakage of power steering fluid.