2001 INFINITI QX4 lights

The security indicator is located on the instrument panel. The indi-
cator blinks when the ignition switch is in OFF or ACC position.
Therefore, IVIS (NATS) warns outsiders that the vehicle is
equipped with the anti-theft system.
IWhen IVIS (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.
IWhen servicing IVIS (NATS) (trouble diagnoses, system initial-
ization and additional registration of other IVIS (NATS) ignition
key IDs), CONSULT-II hardware and CONSULT-II IVIS (NATS)
software is necessary.
Regarding the procedures of IVIS (NATS) initialization and
IVIS (NATS) ignition key ID registration, refer to CONSULT-II
operation manual, IVIS/NVIS.
Therefore, CONSULT-II IVIS (NATS) software (program card
and operation manual) must be kept strictly confidential to
maintain the integrity of the anti-theft function.
IWhen servicing IVIS (NATS) (trouble diagnoses, system initial-
ization and additional registration of other IVIS (NATS) ignition
key IDs), it may be necessary to re-register original key iden-
tification. Therefore, be sure to receive all keys from vehicle
owner.
A maximum of five key IDs can be registered into IVIS (NATS).
IWhen failing to start the engine first time using the key of IVIS
(NATS) (for example, when interference is caused by another
IVIS (NATS) key, an automated full road device or automated
payment device on the key ring), restart as follows.
a) Leave the ignition switch in ON position for approximately 5
seconds.
b) Turn ignition switch to OFF or LOCK position and wait approxi-
mately 5 seconds.
c) Repeat step 1 and 2.
d) Restart the engine while holding the device (which may have
caused the interference) separate from the registered NATS
key. If the no start condition re-occurs, NISSAN recommends
placing the registered IVIS (NATS) key on a separate key ring
to avoid interference from other devices.
PRECAUTIONS FOR INFINITI COMMUNICATOR (IVCS)NBGI0001S09The purpose of INFINITI Communicator is to increase security for
the vehicle owner by providing a convenient way to contact the
most appropriate emergency assistance provider during an emer-
gency.
Improper operation of the system may result in a police response.
The theft warning system also activates INFINITI Communicator.
For details, refer to INFINITI Communicator (IVCS) in the EL sec-
tion.
PRECAUTIONS
Precautions (Cont'd)
GI-4

SGI854
CONTROL UNIT CIRCUIT TESTNBGI0004S0307System Description: When the switch is ON, the control unit lights
up the lamp.
MGI034A
Input-output voltage chart
Pin No. Item ConditionVoltage
value [V]In case of high resistance such as single strand [V]
*
1 Switch Switch ON Battery voltage Lower than battery voltage Approx. 8 (Example)
Switch OFF Approx. 0 Approx. 0
2 Lamp Switch ON Battery voltage Approx. 0 (Inoperative lamp)
Switch OFF Approx. 0 Approx. 0
The voltage value is based on the body ground.
* : If high resistance exists in the switch side circuit (caused by a single strand), terminal 1 does not detect battery voltage. Control unit
does not detect the switch is ON even if the switch does not turn ON. Therefore, the control unit does not supply power to light up the
lamp.
HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT
Circuit Inspection (Cont'd)
GI-32

HOW TO CHANGE SELF-DIAGNOSIS MODE WITH CONSULT-II=NBRS0040S03From User Mode to Diagnosis ModeNBRS0040S0301After selecting ªAIR BAGº on the ªSELECT SYSTEMº screen, User mode automatically changes to Diagno-
sis mode.
SRS803
From Diagnosis Mode to User ModeNBRS0040S0302To return to User mode from Diagnosis mode, touch ªBACKº key of CONSULT-II until ªSELECT SYSTEMº
appears, Diagnosis mode automatically changes to User mode.
SRS804
HOW TO CHANGE SELF-DIAGNOSIS MODE WITHOUT CONSULT-IINBRS0040S04From User Mode to Diagnosis ModeNBRS0040S0401Diagnosis mode activates only when a malfunction is detected, by turning ignition switch as follows:
1) Turn ignition switch ªONº.
2) After ªAIR BAGº warning lamp lights for 7 seconds, turn ignition switch ªOFFº within 1 second.
3) Wait more than 3 seconds.
4) Repeat steps 1 to 3 three times.
5) Turn ignition switch ªONº.
SRS will not enter Diagnosis mode, if no malfunction is detected.
From Diagnosis Mode to User ModeNBRS0040S0402After a malfunction is repaired, switch the ignition ªOFFº for at least one second, then back ªONº. Diagnosis
mode is returned to User mode.
If switching Diagnosis mode to User mode is required while malfunction is being detected, by turning ignition
switch as follows:
1) Turn ignition switch ªONº.
2) After ªAIR BAGº warning lamp lights for 7 seconds, turn ignition switch ªOFFº within 1 second.
3) Wait more than 3 seconds.
4) Repeat steps 1 to 3 three times.
5) Turn ignition switch ªONº.
HOW TO ERASE SELF-DIAGNOSIS RESULTSNBRS0040S05With CONSULT-IINBRS0040S0501IªSELF-DIAG [CURRENT]º
A current Self-diagnosis result is displayed on the CONSULT-II screen in real time.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses Introduction (Cont'd)
RS-30

Diagnostic item Explanation Repair order
CONTROL UNITIDiagnosis sensor unit is malfunctioning. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. If the harness check is OK, replace
the diagnosis sensor unit.
* Follow the procedures in numerical order when repairing malfunctioning parts, then make the final system check.
SRS800
Trouble Diagnoses without CONSULT-IINBRS0046DIAGNOSTIC PROCEDURE 6NBRS0046S01Inspecting SRS malfunctioning parts by using ªAIR BAGº
warning lamp Ð Diagnosis mode
NOTE:
SRS will not enter Diagnosis mode if no malfunction is
detected in User mode.
1. Turn ignition switch ªONº.
2. After ªAIR BAGº warning lamp lights for 7 seconds, turn igni-
tion switch ªOFFº within 1 second.
3. Wait more than 3 seconds.
4. Repeat steps 1 to 3 three times.
5. Turn ignition switch ªONº.
SRS is now in Diagnosis mode.
6. ªAIR BAGº warning lamp operates in Diagnosis mode as fol-
lows:
NOTE:
If SRS does not enter Diagnosis mode even though malfunction is
detected in User mode, check the battery voltage.
If the battery voltage is less than 9V, charge the battery. Then go
to DIAGNOSTIC PROCEDURE 7, page RS-53.
If the battery voltage is OK, replace the diagnosis sensor unit.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses with CONSULT-II (Cont'd)
RS-48

No. ªAIR BAGº warning lamp flash pattern Ð Diagnosis mode Ð SRS condition
1
SRS333
athroughbare repeated. No malfunction
is detected or
repair is com-
pleted.
No further
action is nec-
essary.
2
SRS341
athroughdare repeated.
bÐ Driver and passenger air
bag and seat belt pre-tensioner
marker (For identifying driver
air bag, passenger air bag
and/or seat belt pre-tensioners
malfunctioning)
dÐ Indicates malfunctioning
part. The number of flashes
varies with malfunctioning part
(0.5 sec. ON and 0.5 sec. OFF
is counted as one flash.)The system is
malfunctioning
and needs to
be repaired.
3
SRS342-A
athroughfare repeated.
b,c,dÐ Side air bag marker
(For identifying side air bag
malfunctioning)
fÐ Indicates malfunctioning
part. The number of flashes
varies with malfunctioning part
(0.5 sec. ON and 0.5 sec. OFF
is counted as one flash.)
NOTE:
When diagnosis sensor unit is replaced with new one, ªAIR BAGº
warning lamp will operate in User mode. Checking ªAIR BAGº
warning lamp operation in Diagnosis mode is not required. Go to
step 6.
5. If ªAIR BAGº warning lamp operates as shown in No. 1 in chart
above, turn ignition switch ªOFFº to reset from Diagnosis mode
to User mode and to erase the memory of the malfunction.
Then go to step 6.
If ªAIR BAGº warning lamp operates as shown in No. 2 or No.
3 in chart above, the malfunctioning part is not repaired
completely, or another malfunctioning part is detected. Go to
DIAGNOSTIC PROCEDURE 6, page RS-48, and repair mal-
functioning part completely.
6. Turn ignition switch ªONº. ªAIR BAGº warning lamp operates in
User mode. Compare ªAIR BAGº warning lamp operation to
the chart below.
NOTE:
If switching Diagnosis mode to User mode is required while mal-
function is being detected, by turning ignition switch as follows:
1) Turn ignition switch ªONº.
2) After ªAIR BAGº warning lamp lights for 7 seconds, turn igni-
tion switch ªOFFº within 1 second.
3) Wait more than 3 seconds.
4) Repeat steps 1 to 3 three times.
5) Turn ignition switch ªONº.
SRS is now in User mode.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses without CONSULT-II (Cont'd)
RS-54

Trouble Diagnoses with
Battery/Starting/Charging System Tester
NBSC0018CAUTION:
When working with batteries, always wear appropriate eye
protection.
NOTE:
ITo ensure a complete and thorough diagnosis, the battery,
starter and alternator test segments must be done as a set
from start to finish.
IIf battery surface charge is detected while testing, the tester
will prompt you to turn on the headlights to remove the surface
charge.
IIf necessary, the tester will prompt you to determine if the bat-
tery temperature is above or below 0ÉC (32ÉF). Choose the
appropriate selection by pressing the up or down arrow button,
then press ªENTERº to make the selection.
SEL404X
1. Turn off all loads on the vehicle electrical system. Clean or
repair as necessary.
2. Visually inspect the battery, battery terminals and cable ends
with ignition switch in ªOFFº position.
NOTE:
The contact surface between the battery terminals, cable ends and
tester leads must be clean for a valid test. A poor connection will
prevent testing and a ªCHECK CONNECTIONº message will
appear during the test procedures. If this occurs, clean the battery
post and terminals, reconnect them and restart the test.
3. Connect the red tester lead clamp to the positive battery
terminal, and the black to the negative terminal.
SEL405X
4. The tester will turn on automatically. Using the arrow keys,
select ªIN VEHICLEº on the tester and then press the ªENTERº
key.
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BATTERY
Trouble Diagnoses with Battery/Starting/Charging System Tester
SC-7

ALL-MODE 4WD TRANSFER BASIC CONTROLNBTF0007S01
SMT043D
HYDRAULIC CONTROL CIRCUITSNBTF0007S02
SMT040D
OUTLINENBTF0007S03All-mode 4WD transfer is controlled by the transfer control unit and
sensors.
If a malfunction occurs in the all-mode 4WD system, the 4WD
warning lamp lights up to indicate the system malfunction. There
are two ways to identify the cause of the malfunction.
1) Performing the self-diagnosis. (The 4WD warning lamp will
indicate what kind of malfunction has occurred by flickering.)
2) Performing diagnosis using CONSULT-II.
ALL-MODE 4WD SYSTEM
Control System (Cont'd)
TF-12

IntroductionNBTF0013DESCRIPTIONNBTF0013S01When a malfunction (indicated by the 4WD warning lamp illumination) occurs, collect information first from the
customer about how the malfunction occurs. Then, proceed with the diagnosis presuming it is the cause. Also
inspect the electrical system, paying close attention to other possibilities such as fluid level and leaks.
All-mode 4WD transfer is controlled by transfer control unit and sensors.
If a malfunction occurs in the all-mode 4WD system, the 4WD warning lamp lights up to inform of the system
malfunction. There are two ways to identify the cause of the malfunction.
1) Performing the self-diagnosis. (The 4WD warning lamp will indicate what kind of malfunction has occurred
by flickering.)
2) Performing diagnosis using CONSULT-II.
DIAGNOSTIC WORKSHEETNBTF0013S02Information from CustomerNBTF0013S0201KEY POINTS
WHAT..... Vehicle model
WHEN..... Date, Frequencies
WHERE..... Road conditions
HOW..... Operating conditions, Symptoms
Information sheet from customer
Customer name MR/MS Model & Year VIN
Transfer model
ATX14AEngine Mileage
Incident Date Manuf. Date In Service Date
FrequencylContinuouslIntermittent ( times a day)
Symptomsl4WD shift indicator lamp does not turn on.
l4WD warning lamp does not turn on.
l4WD shift indicator lamp does not turn off.
lATP warning lamp does not turn on.
l4LO indicator lamp does not turn on.
l4WD shift indicator lamp does not indicate ª4Hº.
l4WD shift indicator lamp repeats flicking.
lTight corner braking symptom occurs.
l4WD system does not operate.
lOthers.
4WD warning lamplContinuously litlNot lit
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TROUBLE DIAGNOSIS Ð INTRODUCTION
Introduction
TF-41