2003 NISSAN TEANA Radiator

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

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.

PRECAUTIONS
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Before starting repairs which do not require battery power:
Turn off ignition switch.
Disconnect the negative battery terminal.

If the battery terminals are disconnected, recorded memory of
radio and each control unit is erased.

Battery posts, terminals and related accessories contain lead
and lead compounds. Wash hands after handling.

To prevent serious burns:
Avoid contact with hot metal parts.
Do not remove the radiator cap when the engine is hot.

Dispose of or recycle drained oil or the solvent used for cleaning
parts in an appropriate manner.

Do not attempt to top off the fuel tank after the fuel pump nozzle
shuts off automatically.
Continued refueling may cause fuel overflow, resulting in fuel
spray and possibly a fire.

Clean all disassembled parts in the designated liquid or solvent
prior to inspection or assembly.

Replace oil seals, gaskets, packings, O-rings, locking washers, cotter pins, self-locking nuts, etc. with new
ones.

Replace inner and outer races of tapered roller bearings and needle bearings as a set.

Arrange the disassembled parts in accordance with their assembled locations and sequence.

Do not touch the terminals of electrical components which use microcomputers (such as ECM).
Static electricity may damage internal electronic components.

After disconnecting vacuum or air hoses, attach a tag to indicate the proper connection.

Use only the fluids and lubricants specified in this manual.

Use approved bonding agent, sealants or their equivalents when required.

Use hand tools, power tools (disassembly only) and recom-
mended special tools where specified for safe and efficient ser-
vice repairs.

When repairing the fuel, oil, water, vacuum or exhaust systems,
check all affected lines for leaks.

Before servicing the vehicle:
Protect fenders, upholstery and carpeting with appropriate cov-
ers.
Take caution that keys, buckles or buttons do not scratch paint.
SEF289H
SGI233
PBIC0190E
SGI234

GW-8
SQUEAK AND RATTLE TROUBLE DIAGNOSES

TRUNK
Trunk noises are often caused by a loose jack or loose items put into the trunk by the owner.
In addition look for:
1. Trunk lid dumpers out of adjustment
2. Trunk lid striker out of adjustment
3. Trunk lid torsion bars knocking together
4. A loose license plate or bracket
Most of these incidents can be repaired by adjusting, securing or insulating the item(s) or component(s) caus-
ing the noise.
SUNROOF/HEADLINING
Noises in the sunroof/headlining area can often be traced to one of the following:
1. Sunroof lid, rail, linkage or seals making a rattle or light knocking noise
2. Sunvisor shaft shaking in the holder
3. Front or rear windshield touching headlining and squeaking
Again, pressing on the components to stop the noise while duplicating the conditions can isolate most of these
incidents. Repairs usually consist of insulating with felt cloth tape.
SEATS
When isolating seat noise it's important to note the position the seat is in and the load placed on the seat when
the noise is present. These conditions should be duplicated when verifying and isolating the cause of the
noise.
Cause of seat noise include:
1. Headrest rods and holder
2. A squeak between the seat pad cushion and frame
3. Rear seatback lock and bracket
These noises can be isolated by moving or pressing on the suspected components while duplicating the con-
ditions under which the noise occurs. Most of these incidents can be repaired by repositioning the component
or applying urethane tape to the contact area.
UNDERHOOD
Some interior noise may be caused by components under the hood or on the engine wall. The noise is then
transmitted into the passenger compartment.
Causes of transmitted underhood noise include:
1. Any component mounted to the engine wall
2. Components that pass through the engine wall
3. Engine wall mounts and connectors
4. Loose radiator mounting pins
5. Hood bumpers out of adjustment
6. Hood striker out of adjustment
These noises can be difficult to isolate since they cannot be reached from the interior of the vehicle. The best
method is to secure, move or insulate one component at a time and test drive the vehicle. Also, engine RPM
or load can be changed to isolate the noise. Repairs can usually be made by moving, adjusting, securing, or
insulating the component causing the noise.

IDX-6
ALPHABETICAL INDEX
NVH troubleshooting (BR) ................................... BR-5
NVH troubleshooting (EM)(QR20DE) ............... EM-12
NVH troubleshooting (EM)(VQ23DE and VQ35DE) .....
EM-126
O
O2S1B1 - Wiring diagram .................. EC-488
, EC-498
O2S1B2 - Wiring diagram .................. EC-490, EC-500
Oil cooler (engine)(VQ23DE and VQ35DE) ....... LU-23
Oil filter(QR20DE) .............................................. LU-10
Oil filter(VQ23DE and VQ35DE) ........................ LU-22
Oil pan (engine)(QR20DE) ............................... EM-26
Oil pan (engine)(VQ23DE and VQ35DE) ....... EM-145
Oil pressure (engine)(QR20DE) .......................... LU-7
Oil pressure (engine)(VQ23DE and VQ35DE) .. LU-20
Oil pump (engine)(QR20DE) ............................. LU-11
Oil pump (engine)(VQ23DE and VQ35DE) ....... LU-25
Oil pump regulator valve (engine)(QR20DE) ..... LU-11
Oil pump regulator valve (engine)(VQ23DE and
VQ35DE) ........................................................... LU-25
Oil seal replacement (engine)(QR20DE) ......... EM-53,
EM-62
, EM-70, EM-81
Oil seal replacement (engine)(VQ23DE and VQ35DE)
EM-207
On board diagnostic system ................ EC-33, EC-373
Out side mirror .................................... GW-74, GW-77
Overheat ............................................ EC-218, EC-575
Oversize piston(QR20DE) .............................. EM-103
Oversize piston(VQ23DE and VQ35DE) ........ EM-249
OVRCSV - Wiring diagram .............................. AT-101
P
Park/Neutral position switch .............. EC-238
, EC-614
Park/neutral position switch (A/T) ...... AT-161, AT-210
Park/neutral position switch (CVT) .................. CVT-62
PCV (positive crankcase ventilation) ... EC-30, EC-370
PHASE - Wiring diagram ................................. EC-178
PHSB1 - Wiring diagram .................................. EC-526
PHSB2 - Wiring diagram .................................. EC-528
Pilot bushing replacement - See Pilot
converter(QR20DE) .......................................... EM-81
Pilot bushing replacement - See Pilot
converter(VQ23DE and VQ35DE) .................. EM-228
Piston assembly(QR20DE) ............................... EM-92
Piston assembly(VQ23DE and VQ35DE) ....... EM-240
Piston pin inspection(QR20DE) ........................ EM-99
Piston pin inspection(VQ23DE and VQ35DE) EM-245
Piston ring inspection(QR20DE) ..................... EM-100
Piston ring inspection(VQ23DE and VQ35DE) EM-246
Piston to bore clearance(QR20DE) ................ EM-103
Piston to bore clearance(VQ23DE and VQ35DE) ........
EM-249
PNP/SW - Wiring diagram .. EC-239, EC-615, CVT-64
POS - Wiring diagram ........................ EC-171, EC-519
POWER - Wiring diagram ................... CVT-135, PG-4
Power door mirror .............................................. BL-21
Power seat ......................................................... SE-59
Power steering fluid level .................................. MA-42
Power steering gear ........................................... PS-17
Power steering oil pump .................................... PS-29
Power steering pressure (PSP) sensor .......... EC-185,
EC-533
Power supply routing .......................................... PG-3
Power window .................................................. GW-17
Precations for Leak detection dye .................. ATC-14
Precautions (General) ........................................... GI-4
Pressure control solenoid valve A .. CVT-97, CVT-102
Pressure control solenoid valve B CVT-105, CVT-108
Pressure test (CVT) ........................................ CVT-33
PRGVLV - Wirng diagram ................. EC-283, EC-678
Primary pressure sensor ............................... CVT-126
Primary Speed Sensor .................................... CVT-74
PRIPS - Wiring diagram ................................ CVT-127
PRSCVT - Wiring diagram .............................. CVT-75
PS/SEN - Wiring diagram ................. EC-186, EC-534
PT/SEN - Wiring diagram ................................ AT-121
R
R/FOG - Wiring diagram .................................. LT-144
Radiator(QR20DE) ............................... CO-13, CO-16
Radiator(VQ23DE and VQ35DE) ..................... CO-37
Radio - See Audio .................................... AV-4, AV-18
Rear bumper ....................................................... EI-17
Rear disc brake .................................................. BR-33
Rear door ............................................ BL-119, GW-50
Rear parcel shelf finisher .................................... EI-43
Rear seat ......................................................... SE-112
Rear window defogger ..................................... GW-54
Refrigerant connection precaution .................... ATC-6
Refrigerant discharging evacuating charging ATC-131
Refrigerant general precaution ......................... ATC-6
Refrigerant lines ............................................ ATC-131
Refrigerant pressure sensor EC-339, EC-748, ATC-83,
ATC-144
Refrigeration cycle .......................................... ATC-19
Removal and installation (A/T) ......................... AT-241
Road test ......... AT-48, AT-50, AT-51, AT-52, CVT-35
Rocker cover(QR20DE) .................................... EM-39
Rocker cover(VQ23DE and VQ35DE) ............ EM-160
Room lamp - See Interior lamp ........................ LT-219
ROOM/L - Wiring diagram ............................... LT-225
RP/SEN - Wiring diagram ................. EC-340, EC-749
RRO2 - Wiring diagram .................... EC-314, EC-320
RRO2B1 - Wiring diagram ................ EC-715, EC-724
RRO2B2 - Wiring diagram ................ EC-717, EC-726
S
SEAT - Wiring diagram ...................................... SE-59
Seat belt pre-tensioner disposal ..................... SRS-48
Seat belt, front ..................................................... SB-3
Seat, rear ......................................................... SE-112
Secondary pressure sensor .......................... CVT-118
Secondary Speed Sensor ............................... CVT-79
SECPS - Wiring diagram .............................. CVT-119

SQUEAK AND RATTLE TROUBLE DIAGNOSES
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TRUNK
Trunk noises are often caused by a loose jack or loose items put into the trunk by the owner.
In addition look for:
1. Trunk lid dumpers out of adjustment
2. Trunk lid striker out of adjustment
3. Trunk lid torsion bars knocking together
4. A loose license plate or bracket
Most of these incidents can be repaired by adjusting, securing or insulating the item(s) or component(s) caus-
ing the noise.
SUNROOF/HEADLINING
Noises in the sunroof/headlining area can often be traced to one of the following:
1. Sunroof lid, rail, linkage or seals making a rattle or light knocking noise
2. Sunvisor shaft shaking in the holder
3. Front or rear windshield touching headlining and squeaking
Again, pressing on the components to stop the noise while duplicating the conditions can isolate most of these
incidents. Repairs usually consist of insulating with felt cloth tape.
SEATS
When isolating seat noise it's important to note the position the seat is in and the load placed on the seat when
the noise is present. These conditions should be duplicated when verifying and isolating the cause of the
noise.
Cause of seat noise include:
1. Headrest rods and holder
2. A squeak between the seat pad cushion and frame
3. Rear seatback lock and bracket
These noises can be isolated by moving or pressing on the suspected components while duplicating the con-
ditions under which the noise occurs. Most of these incidents can be repaired by repositioning the component
or applying urethane tape to the contact area.
UNDERHOOD
Some interior noise may be caused by components under the hood or on the engine wall. The noise is then
transmitted into the passenger compartment.
Causes of transmitted underhood noise include:
1. Any component mounted to the engine wall
2. Components that pass through the engine wall
3. Engine wall mounts and connectors
4. Loose radiator mounting pins
5. Hood bumpers out of adjustment
6. Hood striker out of adjustment
These noises can be difficult to isolate since they cannot be reached from the interior of the vehicle. The best
method is to secure, move or insulate one component at a time and test drive the vehicle. Also, engine RPM
or load can be changed to isolate the noise. Repairs can usually be made by moving, adjusting, securing, or
insulating the component causing the noise.

OIL COOLER (VQ35DE)
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OIL COOLER (VQ35DE)PFP:21305
Removal and InstallationBBS004WN

Refer to GI-10, "Components" for symbol marks in the figure.
WARNING:
Be careful not to get burn yourself, as engine oil and engine coolant may be hot.
REMOVAL
NOTE:
When removing oil cooler only, step 2 is unnecessary.
1. Remove splash guard (RH).
2. Drain engine coolant from radiator and cylinder block. Refer to CO-34, "
Changing Engine Coolant" and
EM-229, "
DISASSEMBLY" .
NOTE:
Perform this step when removing water pipes.
3. Remove oil filter. Refer to LU-22, "
OIL FILTER" .
CAUTION:
Do not spill engine oil on drive belts.
4. Disconnect water hoses from oil cooler.

When removing oil cooler only, pinching water hoses near oil cooler to prevent engine coolant spilling.
1. Connector bolt 2. Copper gasket 3. Water drain plug
4. Water pipe 5. Bracket 6. Water hose
7. Relief valve 8. O-ring 9. Oil cooler
10. Connector bolt 11. Oil filter 12. Water hose
13. Water pipe 14. Clamp 15. Water hose
16. Clamp
A. Refer to LU-22
:Engine front
PBIC4731E

MA-1
MAINTENANCE
L MAINTENANCE
CONTENTS
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SECTION MA
A
B
MA

MAINTENANCE
PREPARATION ........................................................... 3
Special Service Tools ............................................... 3
Commercial Service Tools ........................................ 3
DESCRIPTION ............................................................ 4
Pre-Delivery Inspection Items .................................. 4
GENERAL MAINTENANCE ....................................... 6
General Maintenance ............................................... 6
OUTSIDE THE VEHICLE ...................................... 6
INSIDE THE VEHICLE .......................................... 6
UNDER THE HOOD AND VEHICLE .................... 7
PERIODIC MAINTENANCE ....................................... 8
Periodic Maintenance ............................................... 8
ENGINE AND EMISSION CONTROL MAINTE-
NANCE .................................................................. 8
CHASSIS AND BODY MAINTENANCE ............... 9
MAINTENANCE UNDER SEVERE DRIVING
CONDITIONS ...................................................... 10
ENGINE AND EMISSION CONTROL MAINTE-
NANCE ................................................................. 11
CHASSIS AND BODY MAINTENANCE ............. 12
MAINTENANCE UNDER SEVERE DRIVING
CONDITIONS ...................................................... 13
RECOMMENDED FLUIDS AND LUBRICANTS ...... 14
Fluids and Lubricants ............................................. 14
SAE Viscosity Number ........................................... 15
GASOLINE ENGINE ........................................... 15
Anti-Freeze Coolant Mixture Ratio ......................... 15
ENGINE MAINTENANCE (QR20DE) ....................... 16
Checking Drive Belts .............................................. 16
Tension Adjustment ................................................ 16
Changing Engine Coolant ...................................... 16
DRAINING ENGINE COOLANT ......................... 16
REFILLING ENGINE COOLANT ........................ 17
FLUSHING COOLING SYSTEM ......................... 18
Checking Cooling System ...................................... 18
CHECKING COOLING SYSTEM HOSES .......... 19
CHECKING RADIATOR CAP .............................. 19
CHECKING RADIATOR SYSTEM FOR LEAKS ... 20
Checking Fuel Lines ............................................... 20
Changing Air Cleaner Filter .................................... 20VISCOUS PAPER TYPE ..................................... 20
Changing Engine Oil ............................................... 20
Changing Oil Filter .................................................. 21
REMOVAL ........................................................... 21
INSTALLATION ................................................... 22
INSPECTION AFTER INSTALLATION ................ 22
Checking and Changing Spark Plugs ..................... 22
REMOVAL ........................................................... 22
INSPECTION AFTER REMOVAL ....................... 23
INSTALLATION ................................................... 23
Checking EVAP Vapor Lines .................................. 23
ENGINE MAINTENANCE (VQ23DE AND VQ35DE) ... 24
Checking Drive Belts .............................................. 24
Tension Adjustment ................................................ 24
ALTERNATOR AND A/C COMPRESSOR BELT ... 25
POWER STEERING OIL PUMP BELT ................ 25
Changing Engine Coolant ....................................... 25
DRAINING ENGINE COOLANT .......................... 26
REFILLING ENGINE COOLANT ......................... 26
FLUSHING COOLING SYSTEM ......................... 27
Checking Cooling System ...................................... 28
CHECKING COOLING SYSTEM HOSES ........... 28
CHECKING RADIATOR CAP .............................. 28
CHECKING RADIATOR ...................................... 29
CHECKING COOLING SYSTEM FOR LEAKS ... 29
Checking Fuel Lines ............................................... 30
Changing Air Cleaner Filter .................................... 30
VISCOUS PAPER TYPE ..................................... 30
Changing Engine Oil ............................................... 30
Changing Oil Filter .................................................. 31
REMOVAL ........................................................... 31
INSTALLATION ................................................... 31
INSPECTION AFTER INSTALLATION ................ 32
Changing Spark Plug (Platinum-Tipped Type) ....... 32
REMOVAL ........................................................... 32
INSPECTION AFTER REMOVAL ....................... 32
INSTALLATION ................................................... 33
Checking Positive Crankcase Ventilation System ... 33
PCV (POSITIVE CRANKCASE VENTILATION)
VALVE ................................................................. 33