2001 INFINITI QX4 Battery replace

REMOTE CONTROLLER BATTERY CHECK=NBEL0115S02
1 CHECK REMOTE CONTROLLER BATTERY
Remove battery (refer to EL-293) and measure voltage across battery positive and negative terminals, (+) and (þ).
Voltage [V]:
2.5 - 3.0
NOTE:
Remote controller does not function if battery is not set correctly.
SEL277V
OK or NG
OK©Check remote controller battery terminals for corrosion or damage.
NG©Replace battery.
MULTI-REMOTE CONTROL SYSTEM
Trouble Diagnoses (Cont'd)
EL-278

Remote Controller Battery ReplacementNBEL0118
SEL732W
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MULTI-REMOTE CONTROL SYSTEM
Remote Controller Battery Replacement
EL-293

NOTE:
If an unavailable number is input as ªSYS IDº, ªGR IDº or
ªOVERLOAD CLASSº, CONSULT-II may be locked. In such
cases, disconnect the vehicle battery cable once and then
setup the system again.
5. Touch ªENTERº.
SEL465W
6. Touch ªOKº.
7. Carry out the next system setting or contact Communicator
Response Center and inform them that data has been updated
or IVCS unit has been replaced. For details, refer to EL-381.
NOTE:
Whenever the phone number is updated or the IVCS unit is
replaced, the INFINITI Communicator system automatically
contacts the Communicator Response Center the first time the
vehicle is stared.
SEL466W
STOLEN VEHICLE TRACKING/ALARM NOTIFICATION
SETTING CHECK
NBEL0187S051. Touch ªCONFIGURATIONº.
2. Touch ªVEHICLE TRACKINGº or ªALARM NOTIFICATIONº.
SEL467W
3. This function should always be ªONº (function activate.)
NOTE:
IIf either setting is ªOFFº, contact the Communicator
Response Center at 1-888-427-4812 to verify the system
setting.
IWhenever dialing the above number, information about
the vehicle is required by the operator. For details, refer to
EL-348.
INFINITI COMMUNICATOR (IVCS)
System Setting (When IVCS Unit is Replaced) (Cont'd)
EL-384

SEL611X
6. To delete all the stored places in the ªAddress Bookº, ªAvoid
Areaº and ªPrevious Dest.º, select ªYesº.
Trouble diagnosesNBEL0234SYMPTOM CHARTNBEL0234S01
Symptom Diagnoses/service procedureReference
page
Any function of the system
does not operate.Check power supply and ground circuit for display & NAVI control unit. EL-420
Strange screen color or
unusual screen brightness.1. Check ªDISPLAY SETTINGº. EL-412
2. Check display in ªDiagnosis of Displayº MODE. Ð
The display is not dimmed
when turning lighting switch
to ON.1. Check ªDISPLAY SETTINGº. EL-412
2. Check lighting switch signal input to display & NAVI control unit correctly in
ªDiagnosis for the signals from the carº MODE.EL-404
No navigation guide voice
are heard from both front
speakers.1. Check ªVoice Guidance Settingº. Ð
2. Check voice guide operation. EL-421
Beep does not sound when
the system guides route.Check ªBEEP ON/OFF SETTINGº. EL-412
Position marker does not
trace along the route being
traveled.Go to ªWORK FLOW FOR NAVIGATION INSPECTIONº. EL-418
Position marker does not
indicate forward or backward
movement.Check reverse signal input to display & NAVI control unit correctly by ªDiagnosis
for the signals from the carº MODE.EL-404
Radio wave of GPS cannot
be received. (GPS marker
on the display does not
become green color.)1. Is there anything obstructing the GPS antenna on the rear parcel finisher?
(GPS antenna located under the rear parcel finisher.)Ð
2. Check GPS radio wave receive condition in ªGPS INFORMATION SETTINGº. EL-410
3. Check GPS antenna in ªSelf Diagnosisº MODE. EL-397
Heading direction of position
marker does not match
vehicle direction.1. Perform ªADJUST CURRENT LOCATIONº SETTING. EL-411
2. Go to ªWORK FLOW FOR NAVIGATION INSPECTIONº. EL-418
Stored location in the
address book and other
memory functions are lost
when battery is disconnected
or becomes discharged.Stored location in the address book and other memory functions may be lost if the
battery is disconnected or becomes discharged. If this should occur, charge or
replace the battery as necessary and re-enter the information.Ð
Map appears grey and can-
not be scrolled.The current location in the memory is out of the map data area.
Perform ªInitialize Locationº.EL-433
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NAVIGATION SYSTEM
Setting Mode (Cont'd)
EL-417

NBEM0007
SEM480G
SEM481G
JEM482G
SEM387C
1. Warm up engine.
2. Turn ignition switch OFF.
3. Release fuel pressure.
Refer to EC-39, ªFuel Pressure Releaseº.
4. Remove engine cover and throttle wire.
5. Remove air duct with air cleaner case.
6. Remove harness connectors and harness brackets around
ignition coils.
7. Remove throttle body.
8. Disconnect ignition coil with power transistor harness
connectors, then remove ignition coils.
9. Remove all spark plugs.
IClean area around plug with compressed air before removing
the spark plug.
10. Attach a compression tester to No. 1 cylinder.
11. Depress accelerator pedal fully to keep throttle valve wide
open.
12. Crank engine and record highest gauge indication.
13. Repeat the measurement on each cylinder as shown above.
IAlways use a fully-charged battery to obtain specified
engine speed.
Unit: kPa (kg/cm2, psi)/rpm
Standard MinimumDifference limit between
cylinders
1,275 (13.0, 185)/300 981 (10.0, 142)/300 98 (1.0, 14)/300
14. If compression in one or more cylinders is low:
a. Pour a small amount of engine oil into cylinders through spark
plug holes.
b. Retest compression.
IIf adding oil helps compression, piston rings may be worn
or damaged. If so, replace piston rings after checking pis-
ton.
IIf pressure stays low, a valve may be sticking or seating
improperly. Inspect and repair valve and valve seat. (Refer
to SDS, EM-76 and EM-79.) If valve or valve seat is dam-
aged excessively, replace them.
IIf compression stays low in two cylinders that are next to
each other:
a) The cylinder head gasket may be leaking, or
b) Both cylinders may have valve component damage. Inspect
and repair as necessary.
15. Install parts in reverse order of removal.
16. Perform ªSelf-diagnosis Procedureº referring to EC-72, ªHow to
Erase DTCº if any DTC appears.
MEASUREMENT OF COMPRESSION PRESSURE
EM-14

Removal and InstallationNBFE0004WARNING:
When replacing fuel line parts, be sure to observe the follow-
ing:
IPut a ªCAUTION: INFLAMMABLEº sign in workshop.
IDo not smoke while servicing fuel system. Keep open
flames and sparks away from work area.
IBe sure to furnish the workshop with a CO
2fire extin-
guisher.
CAUTION:
IBefore removing fuel line parts, carry out the following
procedures:
a) Put drained fuel in an explosion-proof container and put
lid on securely.
b) Release fuel pressure from fuel line. Refer to MA-16,
ªChanging Fuel Filterº.
c) Disconnect battery ground cable.
IAlways replace O-ring with new ones.
IDo not kink or twist hose and tube when they are installed.
IDo not tighten hose clamps excessively to avoid damag-
ing hoses.
IWhen installing fuel check valve, be careful of its desig-
nated direction. Refer to EC-32, ªEVAPORATIVE EMIS-
SION SYSTEMº.
IAfter installation, run engine and check for fuel leaks at
connections.
FUEL SYSTEM
Removal and Installation
FE-4

GENERAL INFORMATION
SECTION
GI
CONTENTS
PRECAUTIONS...............................................................3
Precautions ..................................................................3
PRECAUTIONS FOR SUPPLEMENTAL
RESTRAINT SYSTEM (SRS)²AIR BAG²AND
²SEAT BELT PRE-TENSIONER²
.................................3
PRECAUTIONS FOR IVIS (INFINITI VEHICLE
IMMOBILIZER SYSTEM - NATS)
.................................3
PRECAUTIONS FOR INFINITI COMMUNICATOR
(IVCS)
.......................................................................4
GENERAL PRECAUTIONS.........................................5
PRECAUTIONS FOR MULTIPORT FUEL
INJECTION SYSTEM OR ENGINE CONTROL
SYSTEM
...................................................................6
PRECAUTIONS FOR THREE WAY CATALYST...........6
PRECAUTIONS FOR HOSES.....................................7
PRECAUTIONS FOR ENGINE OILS...........................8
PRECAUTIONS FOR FUEL........................................8
PRECAUTIONS FOR AIR CONDITIONING..................8
HOW TO USE THIS MANUAL........................................9
HOW TO READ WIRING DIAGRAMS.......................... 11
Sample/Wiring Diagram - EXAMPL - ........................ 11
OPTIONAL SPLICE..................................................12
Description .................................................................13
CONNECTOR SYMBOLS.........................................15
HARNESS INDICATION...........................................16
COMPONENT INDICATION......................................16
SWITCH POSITIONS...............................................16
DETECTABLE LINES AND NON-DETECTABLE
LINES
.....................................................................17
MULTIPLE SWITCH.................................................18
REFERENCE AREA.................................................19
HOW TO CHECK TERMINAL.......................................21
Connector and Terminal Pin Kit.................................21
How to Probe Connectors .........................................21
PROBING FROM HARNESS SIDE............................21
PROBING FROM TERMINAL SIDE...........................21
How to Check Enlarged Contact Spring of
Terminal .....................................................................22
Waterproof Connector Inspection ..............................23
RUBBER SEAL INSPECTION...................................23
WIRE SEAL INSPECTION........................................23Terminal Lock Inspection ...........................................23
HOW TO PERFORM EFFICIENT DIAGNOSIS
FOR AN ELECTRICAL INCIDENT...............................24
Work Flow ..................................................................24
Incident Simulation Tests ...........................................25
INTRODUCTION......................................................25
VEHICLE VIBRATION..............................................25
HEAT SENSITIVE....................................................26
FREEZING..............................................................26
WATER INTRUSION................................................27
ELECTRICAL LOAD.................................................27
COLD OR HOT START UP.......................................27
Circuit Inspection .......................................................27
INTRODUCTION......................................................27
TESTING FOR²OPENS²IN THE CIRCUIT................28
TESTING FOR²SHORTS²IN THE CIRCUIT..............29
GROUND INSPECTION...........................................30
VOLTAGE DROP TESTS..........................................30
CONTROL UNIT CIRCUIT TEST...............................32
HOW TO FOLLOW TROUBLE DIAGNOSIS................34
How to Follow Test Groups in Trouble Diagnosis .....35
Key to Symbols Signifying Measurements or
Procedures.................................................................36
CONSULT-II CHECKING SYSTEM...............................38
Function and System Application ..............................38
Nickel Metal Hydride Battery Replacement...............39
Checking Equipment..................................................39
CONSULT-II Data Link Connector (DLC) Circuit ......40
INSPECTION PROCEDURE.....................................40
IDENTIFICATION INFORMATION................................41
Model Variation ..........................................................41
PREFIX AND SUFFIX DESIGNATIONS.....................41
Identification Number .................................................41
VEHICLE IDENTIFICATION NUMBER
ARRANGEMENT
.....................................................42
IDENTIFICATION PLATE..........................................42
ENGINE SERIAL NUMBER.......................................43
AUTOMATIC TRANSMISSION NUMBER...................43
TRANSFER SERIAL NUMBER..................................43
Dimensions ................................................................43
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IClean all disassembled parts in the designated liquid or solvent
prior to inspection or assembly.
IReplace oil seals, gaskets, packings, O-rings, locking washers,
cotter pins, self-locking nuts, etc. with new ones.
IReplace inner and outer races of tapered roller bearings and
needle bearings as a set.
IArrange the disassembled parts in accordance with their
assembled locations and sequence.
IDo not touch the terminals of electrical components which use
microcomputers (such as ECMs).
Static electricity may damage internal electronic components.
IAfter disconnecting vacuum or air hoses, attach a tag to indi-
cate the proper connection.
IUse only the fluids and lubricants specified in this manual.
IUse approved bonding agent, sealants or their equivalents
when required.
IUse tools and recommended special tools where specified for
safe and efficient service repairs.
IWhen repairing the fuel, oil, water, vacuum or exhaust
systems, check all affected lines for leaks.
IDispose of drained oil or the solvent used for cleaning parts in
an appropriate manner.
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 discon-
nected only when working according to the WORK FLOW of
TROUBLE DIAGNOSES in EC and AT sections.
SGI787
PRECAUTIONS FOR MULTIPORT FUEL INJECTION
SYSTEM OR ENGINE CONTROL SYSTEM
NBGI0001S03IBefore connecting or disconnecting any harness connector for
the multiport fuel injection system or ECM (Engine Control
Module):
Turn ignition switch to OFF position.
Disconnect negative battery terminal.
Otherwise, there may be damage to ECM.
IBefore disconnecting pressurized fuel line from fuel pump to
injectors, be sure to release fuel pressure.
IBe careful not to jar components such as ECM and mass air
flow sensor.
PRECAUTIONS FOR THREE WAY CATALYSTNBGI0001S04If a large amount of unburned fuel flows into the catalyst, the cata-
lyst temperature will be excessively high. To prevent this, follow the
instructions below:
IUse unleaded gasoline only. Leaded gasoline will seriously
damage the three way catalyst.
IWhen checking for ignition spark or measuring engine
compression, make tests quickly and only when necessary.
IDo not run engine when the fuel tank level is low, otherwise the
engine may misfire causing damage to the catalyst.
PRECAUTIONS
Precautions (Cont'd)
GI-6