2003 NISSAN TEANA engine

FRONT SUSPENSION MEMBER
FSU-17
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FRONT SUSPENSION MEMBERPFP:54401
Removal and InstallationBES0003S
REMOVAL
1. Remove cowl top panel and hood. Install engine slinger, and then hoist engine. (Models with VQ35DE)
Refer to EI-21, "
COWL TOP" , BL-13, "HOOD" .
2. Remove tires from the vehicle.
3. Remove undercover and splash guard.
4. Remove mounting nut on the lower side of stabilizer connecting
rod. Remove stabilizer connecting rod from stabilizer bar. Refer
to FSU-16, "
STABILIZER BAR" .
5. Remove fixing nut and bolt of transverse link ball joint, and then
remove transverse link from steering knuckle. Refer to FSU-14,
"TRANSVERSE LINK" .
6. Remove front exhaust tube. Refer to EX-2, "
EXHAUST SYS-
TEM" .
7. Remove heat insulator. (Except for QR20DE models)
8. Remove steering hydraulic piping bracket from front suspension
member and rear engine mounting insulator. Refer to PS-39,
"HYDRAULIC LINE" .
9. Set a jack under transaxle assembly.
10. Remove mounting bolts of front engine mounting bracket and front engine mounting insulator. Refer to
EM-223, "
ENGINE ASSEMBLY" .
11. Remove mounting bolts of rear engine mounting bracket and rear engine mounting insulator. Refer to EM-
223, "ENGINE ASSEMBLY" .
12. Remove steering gear mounting bolts, and then hang steering gear on vehicle. Refer to PS-17, "
POWER
STEERING GEAR AND LINKAGE" .
13. Set a jack under front suspension member.
14. Remove mounting nuts on the front side and rebound stopper of front suspension member.
15. Remove mounting nut and bolts of member stay, and then remove member stay. Refer to FSU-7, "
Com-
ponents" .
16. Gradually lower a jack to remove front suspension member, stabilizer bar and transverse link from vehicle
as a unit.
17. Remove front and rear engine mounting insulators from front suspension member. Refer to EM-223,
"ENGINE ASSEMBLY" .
18. Remove transverse link from front suspension member. Refer to FSU-14, "
TRANSVERSE LINK" .
19. Remove stabilizer bar from front suspension member.
INSPECTION AFTER REMOVAL
Check front suspension member for deformation, cracks, or other damage. Replace if there are.
INSTALLATION

Installation is the reverse order of the removal. For tightening torque, refer to FSU-7, "Components" .
NOTE:
Do not reuse non-reusable parts.

Perform final tightening of each of parts, under unladen conditions, which were removed when removing
front suspension member and transverse link. Check the wheel alignment. Refer to FSU-5, "
Wheel Align-
ment Inspection" .

Adjust neutral position of steering angle sensor after checking the wheel alignment for models with VDC.
Refer to BRC-40, "
Adjustment of Steering Angle Sensor Neutral Position" .
SEIA0375E

FSU-18
SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Wheel Alignment (Unladen*)BES0003T
*: Fuel, engine coolant and engine oil full. Spare tire, jack, hand tools and mats are in designated positions.
Ball JointBES0003U
Wheelarch Height (Unladen*)BES0003V
*: Fuel, engine coolant and engine oil full. Spare tire, jack, hand tools and mats are in designated positions.Camber
Degree minute (Decimal degree)Minimum –1° 00′ (–1.00°)
Nominal –0° 15′ (–0.25°)
Maximum 0° 30′ (0.50°)
Left and right difference 45′ (0.75°) or less
Caster
Degree minute (Decimal degree)Minimum 2° 05′ (2.08°)
Nominal 2° 50′ (2.83°)
Maximum 3° 35′ (3.58°)
Left and right difference 45′ (0.75°) or less
Kingpin inclination
Degree minute (Decimal degree)Minimum 13° 50′ (13.83°)
Nominal 14° 35′ (14.58°)
Maximum 15° 20′ (15.33°)
Total toe-inDistanceMinimum –0.3 mm (–0.01 in)
Nominal 0.7 mm (0.03 in)
Maximum 1.7 mm (0.07 in)
Angle (left plus right)
Degree minute (Degree)Minimum 0′ (0°)
Nominal 2′ (0.03°)
Maximum 4′ (0.07°)
Swing torque 0.5 - 3.4 N·m (0.06 - 0.34 kg-m, 5 - 30 in-lb)
Measurement on spring balance 13.5 - 91.9 N (1.4 - 9.3 kg, 3.08 - 20.5 lb)
Rotating torque 0.5 - 3.4 N·m (0.06 - 0.34 kg-m, 5 - 30 in-lb)
Axial end play0 mm (0 in)
Tire size 205/65R16 215/55R17
Front (Hf)721 mm
(28.39 in)718 mm
(28.27 in)
Rear (Hr)702 mm
(27.64 in)698 mm
(27.48 in)
SFA818A

GI-1
GENERAL INFORMATION
A GENERAL INFORMATION
CONTENTS
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SECTION GI

GENERAL INFORMATION
PRECAUTIONS .......................................................... 3
Description ............................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Precautions for NATS (NISSAN ANTI-THEFT SYS-
TEM) ........................................................................ 3
Precautions Necessary for Steering Wheel Rotation
After Battery Disconnect .......................................... 4
OPERATION PROCEDURE ................................. 4
General Precautions ................................................ 4
Precautions for Three Way Catalyst ......................... 6
Precautions for Fuel ................................................. 6
QR20DE/VQ23DE ENGINE (REGULAR GASO-
LINE, UNLEADED PREMIUM GASOLINE REC-
OMMENDED) ........................................................ 6
VQ35DE ENGINE (PREMIUM GASOLINE) ......... 6
Precautions for Multiport Fuel Injection System or
Engine Control System ............................................ 6
Precautions for Hoses .............................................. 7
HOSE REMOVAL AND INSTALLATION ............... 7
HOSE CLAMPING ................................................ 7
Precautions for Engine Oils ...................................... 8
HEALTH PROTECTION PRECAUTIONS ............. 8
Precautions for Air Conditioning ............................... 8
HOW TO USE THIS MANUAL ................................... 9
Description ............................................................... 9
Terms ....................................................................... 9
Units ......................................................................... 9
Contents ................................................................... 9
Components ........................................................... 10
SYMBOLS ........................................................... 10
How to Follow Trouble Diagnoses ........................... 11
DESCRIPTION ..................................................... 11
HOW TO FOLLOW TEST GROUPS IN TROU-
BLE DIAGNOSES ................................................ 11
HARNESS WIRE COLOR AND CONNECTOR
NUMBER INDICATION ....................................... 12
KEY TO SYMBOLS SIGNIFYING MEASURE-
MENTS OR PROCEDURES ............................... 13How to Read Wiring Diagrams ............................... 15
HEALTH PROTECTION PRECAUTIONS ............. 8
SYMBOLS ........................................................... 10
DESCRIPTION .................................................... 17
Abbreviations .......................................................... 23
SERVICE INFORMATION FOR ELECTRICAL INCI-
DENT ......................................................................... 24
How to Perform Efficient Diagnosis for an Electrical
Incident ................................................................... 24
WORK FLOW ...................................................... 24
INCIDENT SIMULATION TESTS ........................ 24
CIRCUIT INSPECTION ....................................... 27
Control Units and Electrical Parts ........................... 31
PRECAUTIONS .................................................. 31
CONSULT-II CHECKING SYSTEM .......................... 33
Description .............................................................. 33
Function and System Application ........................... 33
Nickel Metal Hydride Battery Replacement ............ 33
Checking Equipment .............................................. 34
CONSULT-II Start Procedure .................................. 34
CONSULT-II Data Link Connector (DLC) Circuit .... 35
INSPECTION PROCEDURE .............................. 35
CIRCUIT DIAGRAM ............................................... 36
LIFTING POINT ......................................................... 37
Commercial Service Tools ...................................... 37
Garage Jack and Safety Stand and 2-Pole Lift ....... 37
Board-On Lift .......................................................... 38
TOW TRUCK TOWING ............................................. 39
Tow Truck Towing ................................................... 39
TOWING AN AUTOMATIC TRANSAXLE
MODEL WITH THE FRONT WHEELS ON THE
GROUND ............................................................ 39
Vehicle Recovery (Freeing a Stuck Vehicle) ........... 39
TIGHTENING TORQUE OF STANDARD BOLTS .... 40
Tightening Torque Table ......................................... 40
IDENTIFICATION INFORMATION ............................ 41
Model Variation ....................................................... 41
IDENTIFICATION NUMBER ................................ 41
IDENTIFICATION PLATE .................................... 42
ENGINE SERIAL NUMBER ................................ 42

PRECAUTIONS
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PRECAUTIONSPFP:00001
DescriptionBAS0006Z
Observe the following precautions to ensure safe and proper servicing. These precautions are not
described in each individual section.
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
BAS00070
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for NATS (NISSAN ANTI-THEFT SYSTEM)BAS00071
NATS will immobilize the engine if someone tries to start it without the registered key of NATS.
Both of the originally supplied ignition key IDs have been NATS registered.
The security indicator is located on the instrument panel. The indicator blinks when the immobilizer system is
functioning.
Therefore, NATS warns outsiders that the vehicle is equipped with the anti-theft system.

When NATS detects trouble, the security indicator lamp lights up while ignition switch is in "ON" position.
This lighting up indicates that the anti-theft is not functioning, so prompt service is required.

When servicing NATS (trouble diagnoses, system initialization and additional registration of other NATS
ignition key IDs), CONSULT-II hardware and CONSULT-II NATS software is necessary.
Regarding the procedures of NATS initialization and NATS ignition key ID registration, refer to CONSULT-
II operation manual, NATS.
Therefore, CONSULT-II NATS software (program card and operation manual) must be kept strictly con-
fidential to maintain the integrity of the anti-theft function.

When servicing NATS (trouble diagnoses, system initialization and additional registration of other NATS
ignition key IDs), it may be necessary to re-register original key identification. Therefore, be sure to
receive all keys from vehicle owner. A maximum of four or five key IDs can be registered into NATS.

When failing to start the engine first time using the key of NATS, start as follows.
1. Leave the ignition key in "ON" position for approximately 5 seconds.
2. Turn ignition key to "OFF" or "LOCK" position and wait approximately 5 seconds.
3. Repeat step 1 and 2 again.
4. Restart the engine while keeping the key separate from any others on key-chain.

GI-4
PRECAUTIONS

Precautions Necessary for Steering Wheel Rotation After Battery DisconnectBAS00072
NOTE:

This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT
SYSTEM).

Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK″ position.

Always use CONSULT-II to perform self-diagnosis as a part of each function inspection after finishing
work. If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the ″LOCK″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of all control units using CONSULT-II.
General PrecautionsBAS00073

Do not operate the engine for an extended period of time without
proper exhaust ventilation.
Keep the work area well ventilated and free of any flammable
materials. Special care should be taken when handling any flam-
mable or poisonous materials, such as gasoline, refrigerant gas,
etc. When working in a pit or other enclosed area, be sure to
properly ventilate the area before working with hazardous mate-
rials.
Do not smoke while working on the vehicle.

Before jacking up the vehicle, apply wheel chocks or other tire
blocks to the wheels to prevent the vehicle from moving. After
jacking up the vehicle, support the vehicle weight with safety
stands at the points designated for proper lifting before working
on the vehicle.
These operations should be done on a level surface.

When removing a heavy component such as the engine or tran-
saxle/transmission, be careful not to lose your balance and drop
them. Also, do not allow them to strike adjacent parts, especially
the brake tubes and master cylinder.
SGI285
SGI231

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

GI-6
PRECAUTIONS

WARNING:
To prevent ECM from storing the diagnostic trouble codes, do not carelessly disconnect the harness
connectors which are related to the engine control system and TCM (transmission control module)
system. The connectors should be disconnected only when working according to the WORK FLOW of
TROUBLE DIAGNOSES in EC and AT sections.
Precautions for Three Way CatalystBAS00074
If a large amount of unburned fuel flows into the catalyst, the catalyst temperature will be excessively high. To
prevent this, follow the instructions.

Use unleaded gasoline only. Leaded gasoline will seriously damage the three way catalyst.

When checking for ignition spark or measuring engine compression, make tests quickly and only when
necessary.

Do not run engine when the fuel tank level is low, otherwise the engine may misfire, causing damage to
the catalyst.
Do not place the vehicle on flammable material. Keep flammable material off the exhaust pipe and the three
way catalyst.
Precautions for FuelBAS0008E
QR20DE/VQ23DE ENGINE (REGULAR GASOLINE, UNLEADED PREMIUM GASOLINE RECOM-
MENDED)
Use unleaded regular gasoline with an octane rating of at least 91 RON (research octane number).
CAUTION:
Do not use leaded gasoline. Using leaded gasoline will damage the three way catalyst. Using a fuel
other than that specified could adversely affect the emission control devices and systems, and could
also affect the warranty coverage validity.
VQ35DE ENGINE (PREMIUM GASOLINE)
Use unleaded premium gasoline with an octane rating of at least 95 RON (research octane number).
If unleaded premium gasoline is not available, unleaded regular gasoline with an octane rating of at least 91
RON (research octane number) can be used, but only under the following precautions:

have the fuel tank filled only partially with unleaded regular gasoline, and fill up with unleaded premium
gasoline as soon as possible.

avoid full throttle driving and abrupt acceleration.
However, for maximum vehicle performance, the use of unleaded premium gasoline is recommended.
CAUTION:
Do not use leaded gasoline. Using leaded gasoline will damage the three way catalyst. Using a fuel
other than that specified could adversely affect the emission control devices and systems, and could
also affect the warranty coverage validity.
Precautions for Multiport Fuel Injection System or Engine Control SystemBAS0008F

Before connecting or disconnecting any harness connector for
the multiport fuel injection system or ECM:
Turn ignition switch to “OFF” position.
Disconnect negative battery terminal.
Otherwise, there may be damage to ECM.

Before disconnecting pressurized fuel line from fuel pump to
injectors, be sure to release fuel pressure.

Be careful not to jar components such as ECM and mass air
flow sensor.
SGI787

GI-8
PRECAUTIONS

Precautions for Engine OilsBAS0008H
Prolonged and repeated contact with used engine oil may cause skin cancer. Try to avoid direct skin contact
with used oil.
If skin contact is made, wash thoroughly with soap or hand cleaner as soon as possible.
HEALTH PROTECTION PRECAUTIONS

Avoid prolonged and repeated contact with oils, particularly used engine oils.

Wear protective clothing, including impervious gloves where practicable.

Do not put oily rags in pockets.

Avoid contaminating clothes, particularly underpants, with oil.

Heavily soiled clothing and oil-impregnated footwear should not be worn. Overalls must be cleaned regu-
larly.

First aid treatment should be obtained immediately for open cuts and wounds.

Use barrier creams, applying them before each work period, to help the removal of oil from the skin.

Wash with soap and water to ensure all oil is removed (skin cleansers and nail brushes will help). Prepa-
rations containing lanolin replace the natural skin oils which have been removed.

Do not use gasoline, kerosene, diesel fuel, gas oil, thinners or solvents for cleaning skin.

If skin disorders develop, obtain medical advice without delay.

Where practical, degrease components prior to handling.

Where there is a risk of eye contact, eye protection should be worn, for example, chemical goggles or face
shields; in addition an eye wash facility should be provided.
Precautions for Air Conditioning BAS0008I
Use an approved refrigerant recovery unit any time the air conditioning system must be discharged. Refer to
ATC/MTC section “HFC-134a (R-134a) Service Procedure”, “REFRIGERANT LINES” for specific instructions.