Engine control NISSAN TEANA 2003 Service Manual

EM-134
[VQ]
INTAKE MANIFOLD COLLECTOR


Refer to GI-10, "Components" for symbol marks in the figure.
NOTE:
The figure illustrates VQ35DE as an example. Each part form of VQ23DE is different from VQ35DE for differ-
ence of port diameter and so forth. Only portions which structures (components) differ are illustrated.
REMOVAL
WARNING:
To avoid the danger of being scalded, do not drain engine coolant when engine is hot.
NOTE:
Show VQ35DE as an example unless the figure includes specification.
1. Remove engine cover.
CAUTION:
Be careful not to damage or scratch engine cover.
2. Remove air cleaner case (upper) with mass air flow sensor and air duct assembly. Refer to EM-131, "
AIR
CLEANER AND AIR DUCT" .
3. Drain engine coolant, or when water hoses are disconnected, attach plug to prevent engine coolant leak-
age. Refer to CO-34, "
Changing Engine Coolant" .
CAUTION:
Perform this step when engine is cold.
4. Remove electric throttle control actuator as follows:
a. Disconnect harness connector.
b. Loosen mounting bolts in the reverse order as shown in the fig-
ure.
CAUTION:

Handle carefully to avoid any shock to electric throttle
control actuator.

Do not disassemble.
5. Disconnect water hoses from intake manifold collector (upper).

When engine coolant is not drained from radiator, attach plug to water hoses to prevent engine coolant
leakage.
PBIC2454E
KBIA2007J

INTAKE MANIFOLD COLLECTOR
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6. Remove the following:

Va c u u m h o s e

PCV hose

Power steering hose bracket

Intake manifold collector support

Harness bracket
7. Disconnect vacuum hose, EVAP hose and harness connector from EVAP canister purge volume control
solenoid valve.
8. Remove EVAP canister purge volume control solenoid valve.
9. Remove VIAS control solenoid valve and vacuum tank.

Add mating marks as necessary for easier installation.
10. Loosen mounting nuts and bolts in the reverse order as shown
in the figure to remove intake manifold collectors (upper and
lower) assembly and gasket.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
NOTE:
Disregard the numerical order No. 7 to 9 in removal. (VQ23DE)
11. Loosen mounting bolts in the reverse order as shown in the fig-
ure to remove intake manifold collector (upper) from intake man-
ifold collector (lower).
PBIC2455E
PBIC2456E
PBIC2457E
SEM712G

EM-164
[VQ]
FRONT TIMING CHAIN CASE

b. Make sure that intake and exhaust cam noses on No. 1 cylinder
(engine front side of right bank) are located as shown in the fig-
ure.

If not, turn crankshaft one revolution (360 degrees) and align
as shown in the figure.
NOTE:
When only timing chain (primary) is removed, rocker cover does
not need to be removed. To make sure that No. 1 cylinder is at
its compression TDC, remove front timing chain case first. Then
check mating marks on camshaft sprockets. Refer to EM-181,
"INSTALLATION" .
16. Remove crankshaft pulley as follows:
a. Fix crankshaft with pulley holder (SST).
b. Loosen crankshaft pulley bolt and locate bolt seating surface at
10 mm (0.39 in) from its original position.
CAUTION:
Do not remove crankshaft pulley bolt as it will be used as a
supporting point for suitable puller.
c. Place suitable puller tab on holes of crankshaft pulley, and pull
crankshaft pulley through.
CAUTION:
Do not put suitable puller tab on crankshaft pulley periph-
ery, as this will damage internal damper.
17. Remove oil pan (lower). Refer to EM-145, "
OIL PAN AND OIL STRAINER" .
18. Loosen two mounting bolts in front of oil pan (upper) in the
reverse order as shown in the figure.
19. Install oil pan (lower) temporarily.

Applying liquid gasket is unnecessary.
20. Support the oil pan (lower) bottom with jack.

Perform following operations with engine front side supported with jack.
CAUTION:
Put a piece of wood or something similar as the supporting surface, be careful not to damage oil
pan (lower).
21. Remove right and left intake valve timing control covers.
SEM418G
PBIC2475E
SEM915E
PBIC1637E

EM-170
[VQ]
FRONT TIMING CHAIN CASE

e. Tighten mounting bolts to the specified torque in numerical order
as shown in the figure.

There are two types of mounting bolt. Refer to the following
for locating bolts.
f. After all bolts tightening, retighten them to the specified torque in
numerical order as shown in the figure.
6. Install engine mounting bracket (RH) and engine mounting insulator (RH). Refer to EM-223, "
ENGINE
ASSEMBLY" .
7. Remove jack which supports the oil pan (lower) bottom.
8. Remove oil pan (lower).
9. Install two mounting bolts in front of oil pan (upper) in numerical
order as shown in the figure.
10. Install oil pan (lower). Refer to EM-145, "
OIL PAN AND OIL STRAINER" .
11. Install right and left intake valve timing control covers as follows:
a. Install new seal rings in shaft grooves.
b. Apply a continuous bead of liquid gasket with tube presser [SST:
WS39930000] to intake valve timing control covers as shown in
the figure.
Use Genuine Liquid Gasket or equivalent.
c. Install new collared O-rings in front timing chain case oil holes
(left and right sides).
d. Being careful not to move seal rings from the installation grooves, align dowel pins on front timing chain
case with the holes to install intake valve timing control covers.M8 bolts : 1, 2
: 28.4 N·m (2.9 kg-m, 21 ft-lb)
M6 bolts : Except the above
: 12.7 N·m (1.3 kg-m, 9 ft-lb)
: 17.2 N·m (1.8 kg-m, 13 ft-lb)
SEM730G
PBIC1637E
SBIA0492E
PBIC2631E

EM-174
[VQ]
TIMING CHAIN

NOTE:

This section describes procedures for removal/installation front timing chain case and timing chain related
parts, and rear timing chain case, when oil pan (upper) needs to be removed/installed for engine overhaul,
etc.

To removal/installation front timing chain case, timing chain, and timing chain related parts without remov-
ing oil pan (upper), refer to EM-163, "
FRONT TIMING CHAIN CASE" .
REMOVAL
1. Remove engine assembly from vehicle, and separate front suspension member and transaxle from
engine. Refer to EM-223, "
ENGINE ASSEMBLY" .
2. Install engine sub-attachment with engine stand shaft [SST: KV10117001 and KV10106500] to right side
of cylinder block, then lift engine, and mount it onto engine stand [SST: ST0501S000]. Refer to EM-228,
"CYLINDER BLOCK" .
3. Drain engine oil. Refer to LU-21, "
Changing Engine Oil" .
4. Drain engine coolant from inside engine. Refer to EM-229, "
DISASSEMBLY" .
5. Remove intake manifold collectors (upper and lower). Refer to EM-133, "
INTAKE MANIFOLD COLLEC-
TOR" .
6. Remove rocker covers (right and left banks). Refer to EM-160, "
ROCKER COVER" .
7. Remove oil pans (lower and upper) and oil strainer. Refer to EM-145, "
OIL PAN AND OIL STRAINER" .
8. Remove idler pulley and bracket.
9. Separate engine harness removing their brackets from front timing chain case
10. Remove right and left intake valve timing control covers.

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 ] t o c u t l i q u i d g a s k e t f o r
removal.
CAUTION:
Shaft is internally jointed with camshaft sprocket (INT) cen-
ter hole. When removing, keep it horizontal until it is com-
pletely disconnected.
11. Remove collared O-ring from front timing chain case oil hole (left
and right sides).
1. O-ring 2. Timing chain tensioner (secondary) 3. Internal chain guide
4. Timing chain tensioner (secondary) 5. Camshaft sprocket (EXH) 6. Timing chain (secondary)
7. Timing chain (primary) 8. Camshaft sprocket (INT) 9. Slack guide
10. Timing chain tensioner (primary) 11. Camshaft sprocket (EXH) 12. Timing chain (secondary)
13. Camshaft sprocket (INT) 14. Crankshaft sprocket 15. Collared O-ring
16. Seal ring 17. Intake valve timing control cover 18. Chain tensioner cover
19. Intake valve timing control cover 20. Water pump cover 21. Front oil seal
22. Crankshaft pulley 23. Idler pulley 24. Idler pulley bracket
25. Center shaft 26. Washer 27. Front timing chain case
28. Rear timing chain case 29. Water drain plug (front) 30. Tension guide
PBIC0918E
PBIC2631E

EM-192
[VQ]
CAMSHAFT

CAMSHAFTPFP:13001
Removal and InstallationBBS004W1
REMOVAL
1. Remove engine assembly from vehicle, and separate front suspension member and transaxle from
engine. Refer to EM-223, "
ENGINE ASSEMBLY" .
1.Intake valve timing control solenoid
valve2. Gasket 3. Camshaft bracket (No. 2 to 4)
4. Seal washer 5. Camshaft (EXH) 6. Camshaft (INT)
7. Camshaft bracket (No. 1) 8. Dowel pin 9. Valve lifter
10. O-ring 11. Timing chain tensioner (secondary) 12. Spring
13. Plunger 14. Cylinder head (right bank) 15. Cylinder head (left bank)
16. O-ring 17.Camshaft position sensor (PHASE)
(right bank)18.Camshaft position sensor (PHASE)
(left bank)
PBIC2477E

CAMSHAFT
EM-193
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2. Install engine sub-attachment with engine stand shaft [SST: KV10117001 and KV10106500] to right side
of cylinder block, then lift engine, and mount it onto engine stand [SST: ST0501S000]. Refer to EM-228,
"CYLINDER BLOCK" .
3. Remove front timing chain case, camshaft sprocket, timing chain and rear timing chain case. Refer to EM-
173, "TIMING CHAIN" .
4. Remove camshaft position sensors (PHASE) (right and left
banks) from cylinder head back side.
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 sensors in a location where they are
exposed to magnetism.
5. Remove intake valve timing control solenoid valves.

Discard intake valve timing control solenoid valve gaskets and
use new gaskets for installation.
6. Remove camshaft brackets.

Mark camshafts, camshaft brackets and bolts so they are placed in the same position and direction for
installation.

Equally loosen camshaft bracket bolts in several steps in the
reverse order as shown in the figure.
7. Remove camshafts.
8. Remove valve lifters.
KBIA1046E
SEM443GA
PBIC2050E

CAMSHAFT
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INSPECTION AFTER INSTALLATION
Inspection of Camshaft Sprocket (INT) Oil Groove
CAUTION:

Perform this inspection only when DTC P0011 or P0021 are detected in self-diagnostic results of
CONSULT-II and it is directed according to inspection procedure of EC section. Refer to EC-427,
"SELF-DIAG RESULTS MODE" .

Check when engine ins cold so as to prevent burns from any splashing engine oil.
1. Check the engine oil level. Refer to LU-19, "
ENGINE OIL" .
2. Perform the following procedure so as to prevent the engine from being unintentionally started while
checking.
a. Release fuel pressure. Refer to EC-392, "
FUEL PRESSURE RELEASE" .
b. Disconnect ignition coil and injector harness connectors.
3. Remove intake manifold control solenoid valve. Refer to EM-192, "
CAMSHAFT" .
4. Crank the engine, and then make sure that engine oil comes out
from camshaft bracket (No. 1) oil hole. End crank after checking.
WARNING:
Be careful not to touch rotating parts (drive belts, idler pul-
ley, and crankshaft pulley, etc.).
CAUTION:
Engine oil may squirt from intake valve timing control sole-
noid valve installation hole during cranking. Use a shop
cloth to prevent the engine components and the vehicle. Do
not allow engine oil to get on rubber components such as
drive belt or engine mount insulators. Immediately wipe off
any splashed engine oil.

Clean oil groove between oil strainer and intake valve timing control solenoid valve if engine oil does not
come out from camshaft bracket (No. 1) oil hole. Refer to LU-17, "
LUBRICATION SYSTEM" .
5. Remove components between intake valve timing control solenoid valve and camshaft sprocket (INT),
and then check each oil groove for clogging.

Clean oil groove if necessary. Refer to LU-17, "LUBRICATION SYSTEM" .
6. After inspection, install removed parts.
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak and exhaust gases leak.

Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-14, "
RECOMMENDED FLUIDS AND LUBRICANTS" .

Use procedure below to check for fuel leakage.
–Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.

Run engine to check for unusual noise and vibration.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal/installation, slack in the guide may
generate a pounding noise during and just after engine start. However, this is normal. Noise will stop after
hydraulic pressure rises.

Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.

Bleed air from lines and hoses of applicable lines, such as in cooling system.

After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
PBIC2869E

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.

SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00100
Standard and LimitBBS004WE
GENERAL SPECIFICATIONS
VA LV E T I M I N G
EngineVQ23DE VQ35DE
Cylinder arrangementV- 6
Displacement cm
3 (cu in)2,349 (143.34) 3,498 (213.45)
Bore and stroke mm (in)85.0 × 69.0
(3.346 × 2.717)95.5 × 81.4
(3.760 × 3.205)
Valve arrangementDOHC
Firing order1-2-3-4-5-6
Number of piston ringsCompression 2
Oil 1
Number of main bearings4
Compression ratio 9.8 10.3
Compression pressure
kPa (bar, kg/cm
2 , psi) / 300 rpmStandard 1,050 (10.5, 10.7, 152) 1,270 (12.7, 13.0, 184)
Minimum 750 (7.5, 7.7, 109) 980 (9.8, 10.0, 142)
Differential limit between cylinders 100 (1.0, 1.0, 15) 100 (1.0, 1.0, 15)
Cylinder number
SEM713A
Valve timing
(Intake valve timing control - “OFF”)
Unit: degree
abcde f
VQ23DE 232 230−757646
VQ35DE 240 238−664852
PBIC0187E