NVIS (NISSAN Vehicle Immobilizer System - NATS)

NATS (NISSAN Anti-Theft system) has the following immobilizer functions:

^ Since only NATS ignition keys, whose ID nos. have been registered into the ECM and IMMU of NATS, allow the engine to run, operation of a stolen vehicle without a NATS registered key is prevented by NATS. That is to say, NATS will immobilize the engine if someone tries to start it without the registered key of NATS.
^ Both of the originally supplied ignition key IDs have been NATS registered.
If requested by the vehicle owner, a maximum of five key IDs can be registered into the NATS components.
^ The security indicator (Security ind.) blinks when the ignition switch is in "OFF" or "ACC" position. Therefore, NATS warns outsiders that the vehicle is equipped with the anti-theft system.
^ When NATS detects trouble, the security indicator lamp lights up while ignition key is in the "ON" position.
^ NATS trouble diagnoses, system initialization and additional registration of other NATS ignition key IDs must be carried out using CONSULT hardware and CONSULT NATS software.
When NATS initialization has been completed, the ID of the inserted ignition key is automatically NATS registered. Then, if necessary, additional registration of other NATS ignition key IDs can be carried out. Regarding the procedures of NATS initialization and NATS ignition key ID registration, refer to CONSULT operation manual, NATS.
^ When servicing a malfunction of the NATS (indicated by lighting up of Security Indicator Lamp) or registering another NATS ignition key ID no., it may be necessary to re-register original key identification. Therefore, be sure to receive all keys from vehicle owner.





System Composition
The immobilizer function of the NATS consists of the following:
^ NATS ignition key
^ NATS antenna amp. located in the ignition key cylinder
^ NATS immobilizer control unit (NATS IMMU)
^ Engine control module (ECM)
^ Security indicator