System Description

INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS


System Description


SYSTEM DESCRIPTION
- The IVIS (NATS) is an anti-theft system that registers an Intelligent Key ID to the vehicle and prevents the engine from being started by an unregistered Intelligent Key. It has higher protection against auto theft involving the duplication of mechanical keys.
- It performs ID verification when starting the engine in the same way as the Intelligent Key system. But, it performs the IVIS (NATS) ID verification when inserting the Intelligent Key and performs the Intelligent Key ID verification when carrying the Intelligent Key.
- The mechanical key integrated in the Intelligent Key cannot start the engine. When the Intelligent Key battery is discharged, the IVIS (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 performed by the push-button ignition switch operation.
- Locate the security indicator lamp and apply the anti-theft system equipment sticker that warns that the IVIS (NATS) is on-board the model.
- Security indicator lamp always blinks when the power supply position is in the except ON position.
- Up to 4 Intelligent Keys can be registered (including the standard ignition key) upon request from the owner.
- Specified registration is required when replacing ECM, BCM, or Intelligent Key. For the registrations procedures for IVIS (NATS) and Intelligent Key when installing the BCM, refer to CONSULT-III Operation Manual
NATS-IVIS/NVIS.
- Possible symptom of IVIS (NATS) malfunction is "Engine cannot start". The engine can be started with the
Intelligent Key system and IVIS (NATS). Identify the possible causes according to "Work Flow". Refer to Work Flow.
- If ECM other than genuine part is installed, the engine cannot be started. For ECM replacement procedure, refer to Special Repair Requirement.

PRECAUTIONS FOR KEY REGISTRATION
- The key registration is a procedure that erases the current IVIS (NATS) ID once, and then reregisters a new
ID operation. Therefore a registered Intelligent Key is necessary for this procedure. Before starting the registration operation collect all registered Intelligent Keys from the customer.
- When registering the Intelligent Key, perform only one procedure to simultaneously register both ID (IVIS
"NATS" ID and Intelligent Key ID).
The IVIS (NATS) ID registration is the procedure that registers the ID stored into the transponder (integrated in Intelligent Key) to BCM.
The Intelligent key ID registration is the procedure that registers the ID to BCM.
- When performing the Intelligent Key system registration only, the engine cannot be started by inserting the key into the key slot. When performing the IVIS (NATS) registration only, the engine cannot be started by the operation when carrying the key. The registrations of both systems should be performed.

SECURITY INDICATOR LAMP
- Warns that the vehicle is equipped with IVIS (NATS).
- Security indicator lamp always blinks when the ignition switch is in the except ON position.

NOTE:
Because security indicator lamp is highly efficient, the battery is barely affected.