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IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS) BL-173 C D E F G H J K L M A B BL ● All of the originally supplied electronic key IDs (except for card key and emergency key) have been IVIS ● The security indicator blinks when the ignition switch is in OFF or ACC position. Therefore, IVIS (NATS) ● When IVIS (NATS) detects any malfunctions, the security indicator lamp lights up while electronic key is in ● IVIS (NATS) trouble diagnoses, system initialization and additional registration of other IVIS (NATS) elec- NOTE: System Composition AIS002AP 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 (NATS IMMU) ● Engine control module (ECM) ● Security indicator OUTLINE OF IVIS (NATS) FUNCTION 1. By inserting the ignition key (electronic key: built-in transponder) into the key cylinder, the key detection 2. The power is supplied from the NATS IMMU → NATS antenna amp. → antenna coil. 3. The current through the antenna coil induces a magnetic field. 4. The coil in the transponder induces electromotive force by mutual induction, which is charged in the 5. The transponder uses the charged energy to transmit the built-in key ID signal. 6. The sent key ID signal is received by the antenna coil and transmitted via the NATS antenna amp. to PIIA0376E |