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System Description
=NAEL0414
NATS (Nissan Anti-Theft System) has the following immobilizer functions:
I Since only NVIS (NATS) ignition keys, whose ID nos. have been registered into the ECM and IMMU of
NVIS (NATS), allow the engine to run, operation of a stolen vehicle without an NVIS (NATS) registered
key is prevented by NVIS (NATS).
That is to say, NVIS (NATS) will immobilise the engine if someone tries to start it without the registered
key of NVIS (NATS).
I All of the originally supplied ignition key IDs (except for card plate key) have been NVIS (NATS) regis-
tered.
If requested by the vehicle owner, a maximum of five key IDs can be registered into the NVIS (NATS)
components.
I The security indicator blinks when the ignition switch is in “OFF” or “ACC” position.Therefore, NVIS (NATS)
warns outsiders that the vehicle is equipped with the anti-theft system.
I When NVIS (NATS) detects trouble, the security indicator lamp lights up while ignition key is in the “ON”
position.
I NVIS (NATS) trouble diagnoses, system initialization and additional registration of other NVIS (NATS)
ignition key IDs must be carried out using CONSULT-II hardware and CONSULT-II NVIS (NATS) software.
When NVIS (NATS) initialization has been completed, the ID of the inserted ignition key is automatically
NVIS (NATS) registered. Then, if necessary, additional registration of other NVIS (NATS) ignition key IDs
can be carried out.
Regarding the procedures of NVIS (NATS) initialization and NVIS (NATS) ignition key ID registration, refer
to CONSULT-II operation manual, IVIS/NVIS.
I When servicing a malfunction of the NVIS (NATS) (indicated by lighting up of Security Indicator
Lamp) or registering another NVIS (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 Composition
NAEL0415
The immobiliser function of the NVIS (NATS) consists of the following:
I NVIS (NATS) ignition key
I NVIS (NATS) immobilizer control unit (IMMU) located in the ignition key cylinder
I Engine control module (ECM)
I Security indicator
SEL085WF
NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM — NATS)
System Description
EL-386
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