2001 INFINITI QX4 Factory Service Manual

key fob battery adding oil climate settings fuel reserve child restraint open hood

Page 1513 of 2395

INFINITI QX4 2001 Factory Service Manual Component Parts and Harness Connetor
Location
NBEL0170
SEL357X
NOTE:
If customer reports a ªNo Startº condition, request ALL KEYS
to be brought to an INFINITI dealer in case of an IVIS (NATS)
malfun

Page 1514 of 2395

INFINITI QX4 2001 Factory Service Manual System Description=NBEL0171NATS (Nissan Anti-Theft System) has the following immobilizer functions:
ISince only IVIS (NATS) ignition keys, whose ID nos. have been registered into the ECM and IMMU of I

System Description=NBEL0171NATS (Nissan Anti-Theft System) has the following immobilizer functions:
ISince only IVIS (NATS) ignition keys, whose ID nos. have been registered into the ECM and IMMU of IVIS
(NATS), allow the engine to run, operation of a stolen vehicle without an IVIS (NATS) registered key is
prevented by IVIS (NATS).
That is to say, IVIS (NATS) will immobilise the engine if someone tries to start it without the registered key
of IVIS (NATS).
IAll of the originally supplied ignition key IDs (except for card plate key) have been IVIS (NATS) registered.
If requested by the vehicle owner, a maximum of five key IDs can be registered into the IVIS (NATS) com-
ponents.
IThe security indicator blinks when the ignition switch is in ªOFFº or ªACCº 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 key is in the ªONº
position.
IIVIS (NATS) trouble diagnoses, system initialization and additional registration of other IVIS (NATS) igni-
tion key IDs must be carried out using CONSULT-II hardware and CONSULT-II IVIS (NATS) software.
When IVIS (NATS) initialization has been completed, the ID of the inserted ignition key is automatically
IVIS (NATS) registered. Then, if necessary, additional registration of other IVIS (NATS) ignition key IDs
can be carried out.
Regarding the procedures of IVIS (NATS) initialization and IVIS (NATS) ignition key ID registration, refer
to CONSULT-II operation manual, IVIS/NVIS.
IWhen servicing a malfunction of the IVIS (NATS) (indicated by lighting up of Security Indicator
Lamp) or registering another IVIS (NATS) ignition key ID no., it is necessary to re-register original
key identification. Therefore, be sure to receive ALL KEYS from vehicle owner.
System CompositionNBEL0172The immobiliser function of the IVIS (NATS) consists of the following:
IIVIS (NATS) ignition key
IIVIS (NATS) immobilizer control unit (IMMU) located in the ignition key cylinder
IEngine control module (ECM)
ISecurity indicator
SEL085WE
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM Ð NATS)
System Description
EL-329

Page 1515 of 2395

INFINITI QX4 2001 Factory Service Manual Wiring Diagram Ð NATS ÐNBEL0173
MEL865L
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM Ð NATS)
Wiring Diagram Ð NATS Ð
EL-330

Page 1516 of 2395

INFINITI QX4 2001 Factory Service Manual SEL331X
CONSULT-IINBEL0223CONSULT-II INSPECTION PROCEDURENBEL0223S011. Turn ignition switch OFF.
2. Insert IVIS (NATS) program card into CONSULT-II.
: Program card
NATS (UEN99A)
3. Connect CONSULT-II

Page 1517 of 2395

INFINITI QX4 2001 Factory Service Manual NOTE:
IWhen any initialization is performed, all ID previously reg-
istered will be erased and all IVIS (NATS) ignition keys
must be registered again.
IThe engine cannot be started with an unregistere

Page 1518 of 2395

INFINITI QX4 2001 Factory Service Manual Detected items (NATS program card
screen terms)P No. Code
(Self-diag-
nostic
result of
ªENGINEºMalfunction is detected when .....
Reference page
LOCK MODENATS MAL-
FUNCTION
P1610When the starting op

Page 1519 of 2395

INFINITI QX4 2001 Factory Service Manual Trouble DiagnosesNBEL0224WORK FLOWNBEL0224S01
SEL024X
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM Ð NATS)
Trouble Diagnoses
EL-334

Page 1520 of 2395

INFINITI QX4 2001 Factory Service Manual SYMPTOM MATRIX CHART 1NBEL0224S02(Self-diagnosis related item)
SYMPTOMDisplayed ªSELF-DIAG
RESULTSº on CON-
SULT-II screen.DIAGNOSTIC PROCE-
DURE
(Reference page)SYSTEM
(Malfunctioning part or
mode)

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