Without Intelligent Key System

NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS

System Description


SYSTEM DESCRIPTION

NVIS (Nissan Vehicle Immobilizer System-NATS) has the following immobilizer functions:
- Engine immobilizer shows high anti-theft performance to prevent engine start by other than the owner.
- Only a key with key ID registered in BCM and ECM can start engine, and shows high anti-theft performance to prevent key from being copied or stolen.
- If system detects malfunction, security indicator lamp illuminate when ignition switch is turned to ON position.
- If the owner requires, ignition key ID can be registered for up to 5 keys.
- During trouble diagnosis, when the following parts have been replaced or additional ignition key is needed, the specified procedure (Initializing of BCM and registration* of ignition keys) using CONSULT is required.
*: All keys kept by the owner of the vehicle should be registered with ignition key.
- ECM
- BCM
- Ignition key
- Possible symptom of NVIS(NATS) malfunction is "Engine cannot start". However, this symptom also occurs because of other than the NVIS(NATS) malfunction, so start the trouble diagnosis according to Without Intelligent Key System.
- If ECM other than Genuine NISSAN parts is installed, the engine cannot be started. For ECM replacement procedure, Without Intelligent Key System.

PRECAUTIONS FOR KEY REGISTRATION

- The key registration is a procedure that erases the current NVIS(NATS) ID once, and then registers a new
ID. Therefore the registered ignition key is necessary for this procedure. Before starting the registration operation collect all registered ignition keys from the customer
- NVIS(NATS) ID registration is the procedure that registers the ID stored into the transponder (integrated in ignition key) to BCM.

SECURITY INDICATOR LAMP

- Security indicator lamp is located on combination meter and warns that the vehicle is equipped with
NVIS(NATS).
- Security indicator lamp always blinks, when the ignition switch is in any position except the ON position.
- Security indicator lamp turns OFF, when the ignition switch is in ON position.