Engine mechanical NISSAN TEANA 2003 Owner's Guide

PRECAUTIONS
EM-119
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[VQ]PRECAUTIONSPFP:00001
Precautions Necessary for Steering Wheel Rotation After Battery DisconnectBBS007TP
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.
Precautions for Drain Engine CoolantBBS007TQ
Drain engine coolant when engine is cooled.
Precautions for Disconnecting Fuel PipingBBS007TR

Before starting work, make sure no fire or spark producing items are in the work area.

Release fuel pressure before disconnecting and disassembly.

After disconnecting pipes, plug openings to stop fuel leakage.
Precautions for Removal and DisassemblyBBS007TS

When instructed to use special service tools, use specified tools. Always be careful to work safely, avoid
forceful or uninstructed operations.

Exercise maximum care to avoid damage to mating or sliding surfaces.

Cover openings of engine system with tape or equivalent, if necessary, to seal out foreign materials.

Mark and arrange disassembly parts in an organized way for easy troubleshooting and re-assembly.

When loosening bolts and nuts, as a basic rule, start with the one furthest outside, then the one diagonally
opposite, and so on. If the order of loosening is specified, do exactly as specified.
Precautions for Inspection, Repair and ReplacementBBS007TT
Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way, and
replace if necessary.
Precautions for Assembly and InstallationBBS007TU

Use torque wrench to tighten nuts and bolts to specification.

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

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SERVICE INFORMATION FOR ELECTRICAL INCIDENT

SERVICE INFORMATION FOR ELECTRICAL INCIDENTPFP:00000
How to Perform Efficient Diagnosis for an Electrical IncidentBAS0007I
WORK FLOW
INCIDENT SIMULATION TESTS
Introduction
Sometimes the symptom is not present when the vehicle is brought in for service. If possible, re-create the
conditions present at the time of the incident. Doing so may help avoid a No Trouble Found Diagnosis. The fol-
lowing section illustrates ways to simulate the conditions/environment under which the owner experiences an
electrical incident.
The section is broken into the six following topics:

Vehicle vibration
SGI838
STEP DESCRIPTION
STEP 1Get detailed information about the conditions and the environment when the incident occurred.
The following are key pieces of information required to make a good analysis:
WHATVehicle Model, Engine, Transmission/Transaxle and the System (i.e. Radio).
WHENDate, Time of Day, Weather Conditions, Frequency.
WHERERoad Conditions, Altitude and Traffic Situation.
HOWSystem Symptoms, Operating Conditions (Other Components Interaction).
Service History and if any After Market Accessories have been installed.
STEP 2Operate the system, road test if necessary.
Verify the parameter of the incident.
If the problem cannot be duplicated, refer to “Incident Simulation Tests”.
STEP 3Get the proper diagnosis materials together including:

Power Supply Routing

System Operation Descriptions

Applicable Service Manual Sections

Check for any Service Bulletins
Identify where to begin diagnosis based upon your knowledge of the system operation and the customer comments.
STEP 4Inspect the system for mechanical binding, loose connectors or wiring damage.
Determine which circuits and components are involved and diagnose using the Power Supply Routing and Harness
Layouts.
STEP 5 Repair or replace the incident circuit or component.
STEP 6Operate the system in all modes. Verify the system works properly under all conditions. Make sure you have not inad-
vertently created a new incident during your diagnosis or repair steps.

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CHARGING SYSTEM

Removal and InstallationBKS0027E
VQ23DE AND VQ35DE MODELS
Removal
1. Disconnect negative battery cable.
2. Remove engine undercover, using power tools.
3. Remove radiator. Refer to CO-37, "
RADIATOR" in “ENGINE COOLING SYSTEM (CO)” section.
4. Remove alternator and air conditioner compressor belt. Refer to EM-129, "
Removal and Installation" in
“ENGINE MECHANICAL (EM)” section.
5. Remove idler pulley.
6. Remove alternator mounting nut, using power tools.
7. Remove through bolt.
8. Disconnect alternator connector.
9. Remove B terminal nut.
10. Remove ground harness clip and ground harness mounting nut.
1. Through-bolt 2. Cylinder block 3. Timing chain case
4. Alternator mounting nut 5. Alternator 6. Alternator connector
7. B terminal harness 8. B terminal nut 9. Alternator mounting bolt
10. Alternator bracket 11. Alternator bracket mounting bolt
PKIA2926J
PKIA2431E
PKIA2432E

CHARGING SYSTEM
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11. Remove alternator mounting bolt, using power tools.
12. Remove alternator bracket mounting bolt and alternator bracket.
13. Remove alternator to the direction of upper side the vehicle.
Installation
Note the following, and install in the reverse order of removal.

Install alternator, and check tension of belt. Refer to EM-128, "Checking Drive Belts" in “ENGINE
MECHANICAL (EM)” section.
CAUTION:
Be sure to tighten B terminal nut carefully.
PKIA2433E

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CHARGING SYSTEM

QR20DE MODELS
Removal
1. Disconnect negative battery cable.
2. Remove drive belt. Refer to EM-14, "
Removal and Installation" .
3. Remove IPDM E/R bracket mounting bolts.
4. Slide IPDM E/R to the direction of arrow.
5. Disconnect alternator connector.
6. Remove B terminal nut.
7. Remove ground harness clip and ground harness bolt.
8. Remove alternator mounting bolts, using power tools.
9. Remove alternator to the direction of upper side the vehicle.
Installation
Note the following, and install in the reverse order of removal.

Install alternator, and check tension of belt. Refer to EM-14, "Checking Drive Belts" in “ENGINE
MECHANICAL (EM)” section.
CAUTION:
Be sure to tighten B terminal nut carefully.
1. Alternator bracket 2. Alternator mounting bolt (upper) 3. Alternator mounting bolt (lower)
4. Alternator 5. B terminal harness 6. B terminal nut
7. Alternator connector
PKIA2930J
PKIA4811E
PKIA4812E