Infiniti Vehicle Immobilizer System (IVIS ) - NATS

System Description
IVIS (Infinity Vehicle Immobilizer System - NATS) has the following immobilizer functions:
- Since only IVIS (NATS) electronic 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 a IVIS (NATS) registered electronic key is pre-vented by IVIS (NATS).
That is to say, IVIS (NATS) will immobilize the engine if someone tries to start it without the registered electronic key of IVIS (NATS).
- All of the originally supplied electronic key IDs (except for card key and emergency key) have been IVIS (NATS) registered. If requested by the vehicle owner, a maximum of four key IDs can be registered into the IVIS (NATS) components.
- The security indicator 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.
- When IVIS (NATS) detects any malfunctions, the security indicator lamp lights up while electronic key is in the "ON" position.
- IVIS (NATS) trouble diagnoses, system initialization and additional registration of other IVIS (NATS) electronic 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 electronic key is automatically IVIS (NATS) registered. Then, if necessary, additional registration of other IVIS (NATS) electronic key IDs can be carried out.
Regarding the procedures of IVIS (NATS) initialization and IVIS (NATS) electronic key ID registration, refer to CONSULT-II operation manual, IVIS/NVIS.

NOTE: When servicing a malfunction of the IVIS (NATS) indicated by lighting up of Security Indicator Lamp or registering another IVIS (NATS) electronic key ID no., it is necessary to re-register original key identification. Therefore, be sure to receive ALL ELECTRONIC KEYS from vehicle owner.






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