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SEC-22 < FUNCTION DIAGNOSIS > [COUPE] NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS) NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS) System Diagram INFOID:0000000004205993 System Description INFOID:0000000004205994 INPUT/OUTPUT SIGNAL CHART SYSTEM DESCRIPTION • The NVIS (NATS) is an anti-theft system by registering an Intelligent Key ID in to the vehicle and prevents the engine being started by an unregistered Intelligent Key. It has a higher protection against auto thefts that duplicate mechanical key. • It performs the ID verification when starting the engine in the same way as the Intelligent Key system. But, it performs the NVIS (NATS) ID verification when inserting the Intelligent Key and performs the Intelligent Key ID verification when carrying the Intelligent Key. • The Intelligent Key system of L32 is not the same as the conventional models. The mechanical key inte- grated in the Intelligent Key cannot start the engine. When the Intelligent Key battery is discharged, the NVIS (NATS) ID verification memorized to the transponder integrated with Intelligent Key is performed by inserting the Intelligent Key into the key slot. If the verification results are OK, the engine start operation can be per- formed by the push-button ignition switch operation. • Locate the security indicator and apply the anti-theft system equipment sticker, forewarn that the NVIS (NATS) is onboard with the model. • The security indicator always blinks when the Intelligent Key is removed from the key slot and when the power supply position is in LOCK position. • Intelligent Key can be registered up to 4 keys (Including the standard ignition key) on request from the owner. • The specified registration is required when replacing ECM, BCM or Intelligent Key. The registrations proce- dure for NVIS (NATS) and registration procedure for Intelligent Key when installing the BCM, refer to CON- SULT-III Operation Manual. JMKIA0058GB Switch Input signal to BCM BCM function Actuator Push-button ignition switch Push switch NVIS (NATS) • Steering lock relay CVT device (CVT models) P range PNP switch (CVT models) N, P range Clutch interlock switch (M/T models) Clutch ON/OFF Stop lamp switch Brake ON/OFF Key slot Key ID Each door switch Door open/close ECM Engine status signal |