ENGINE START FUNCTION : System Description
INPUT/OUTPUT SIGNAL CHART
INPUT AND OUTPUT SIGNAL CHART
| Switch | Input signal to BCM | BCM function | Actuator |
|---|---|---|---|
| Push-button ignition switch | Push switch | NVIS (NATS) |
|
| Control device | P range | ||
| PNP switch | N, P range | ||
| Stop lamp switch | Brake ON/OFF | ||
| Key slot | Key ID | ||
| Each door switch | Door open/close | ||
| ECM | Engine status signal |
SYSTEM DESCRIPTION
- The NVIS (NATS) is an anti-theft system by registering an key ID in to the vehicle and prevents the engine being started by an unregistered key fob. It has a higher protection against auto thefts that duplicate mechanical key.
- It performs the NVIS (NATS) ID verification when inserting the key fob into the key slot and performs the key ID verification.
- The mechanical key integrated in the key fob can not start the engine. When the key fob battery is discharged, the NVIS (NATS) ID verification memorized to the transponder integrated with key fob is performed by inserting the key fob 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 and apply the anti-theft system equipment sticker, forewarn that the NVIS (NATS) is on board with the model.
- The security indicator always blinks when the power supply position is in ACC, OFF or LOCK position.
- Key fob 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 key fob. The registrations procedure for NVIS (NATS) and registration procedure for key fob when installing the BCM, refer to CONSULT-III Operation Manual NATS-IVIS/NVIS.
- Possible symptom of NVIS (NATS) malfunction is "Engine can not start". The engine can be started with the NVIS (NATS). Identify the possible causes according to "Work Flow", Refer to "WORK FLOW ".
- If ECM other than Genuine NISSAN is installed, the engine cannot be started. For ECM replacement procedure, refer to "ECM RE-COMMUNICATING FUNCTION : SPECIAL REPAIR REQUIREMENT ".
PRECAUTIONS FOR KEY REGISTRATION
- The key registration is a procedure that erases the current NVIS (NATS) ID once, and then re-registers a new ID operation. Therefore the registered key fob is necessary for this procedure. Before starting the registration operation collect all registered key fob from the customer
- When registering the key fob, performs only one procedure to register simultaneously both ID (NVIS "NATS" ID registration and key ID registration).
The NVIS (NATS) ID registration is the procedure that registers the ID stored into the transponder (integrated in key fob) to BCM.
The key ID registration is the procedure that registers the ID to BCM.
STEERING LOCK OPERATION
Steering is locked by steering lock unit when ignition switch is in the OFF position, selector lever is in the P position and any of the following conditions are met.
- Opening door
- Closing door
- Door is locked with key fob
SECURITY INDICATOR
- Warns that the vehicle is equipped with NVIS (NATS).
- The security indicator always blinks when the ignition switch is in ACC or LOCK position.
NOTE: Because security indicator is highly efficient, the battery is barely affected.