Nissan Versa (N17): Nissan anti-theft system
NISSAN ANTI-THEFT SYSTEM : System Description
SYSTEM DIAGRAM

SYSTEM DESCRIPTION
PRECAUTIONS FOR KEY REGISTRATION
- The ID registration is a procedure that erases the current NATS ID once,
and then registers a new ID. Therefore
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 IDs (NATS
ID and Intelligent Key ID).
SECURITY INDICATOR LAMP
- Security indicator lamp warns that the vehicle is equipped with NATS.
- Security indicator lamp always blinks when the ignition switch is in any
position other than ON.
NOTE:
Because security indicator lamp is highly efficient, the battery is barely
affected.
ENGINE START OPERATION WHEN INTELLIGENT KEY IS CONTACTED TO PUSH-BUTTON
IGNITION
SWITCH
- When brake pedal is depressed while selector lever is in the P position
the BCM activates NATS antenna
amp. that is located behind push-button ignition switch.
- When Intelligent Key (transponder built-in) backside is contacted to
push-button ignition switch, BCM
starts NATS ID verification between BCM and Intelligent Key (transponder
built-in) via NATS antenna
amp.
- When NATS ID verification result is OK, buzzer in combination meter
sounds and BCM transmits the
result to ECM.
- BCM turns ACC relay ON and transmits ignition power supply ON signal to
IPDM E/R.
- IPDM E/R turns the ignition relay ON and starts the ignition power
supply.
- IPDM E/R turns the starter control relay ON for engine starting in
advance.
- BCM detects that the selector lever position and brake pedal operation
condition.
- BCM transmits starter request signal to IPDM E/R and turns the starter
relay in IPDM E/R ON if BCM
judges that the engine start condition* is satisfied.
- Power supply is supplied through the starter relay and the starter
control relay to operate the starter motor.
- When BCM receives feedback signal from ECM indicating that the engine is
started, BCM transmits a
stop signal to IPDM E/R and stops cranking by turning off the starter motor
relay. (If engine start is unsuccessful,
cranking stops automatically within 5 seconds.)
*: For the engine start condition, refer to "IGNITION SWITCH POSITION
CHANGE TABLE BY PUSH-BUTTON
IGNITION SWITCH OPERATION" below.
IGNITION SWITCH POSITION CHANGE TABLE BY PUSH-BUTTON IGNITION SWITCH
OPERATION
The ignition switch position can be changed by the following operations.
NOTE:
- When an Intelligent Key is within the detection area of inside key
antenna or when Intelligent Key backside is
contacted to push-button ignition switch, it is equivalent to the operations
below.
- When starting the engine, the BCM monitors under the engine start
conditions,
- Brake pedal operation condition
- Selector lever position
- Vehicle speed
Vehicle speed: less than 4 km/h (2.5 MPH)


Vehicle speed: 4 km/h (2.5 MPH) or more

Emergency stop operation
- Press and hold the push-button ignition switch for 2 seconds or more.
- Press the push-button ignition switch 3 times or more within 1.5
seconds.
INTELLIGENT KEY SYSTEM/ENGINE START
FUNCTION : System Description
SYSTEM DIAGRAM
SYSTEM DESCRIPTION
The engine start function of Intelligent Key system makes it possible to
start and sto ...
VEHICLE SECURITY SYSTEM : System Description
The vehicle security system has two alarm functions (theft warning alarm
and panic alarm) and reduces the
possibility of a theft or mischief by ac ...
Other materials:
Servicing air conditioner
The air conditioner system in your NISSAN vehicle
is charged with a refrigerant designed with
the environment in mind.
This refrigerant does not harm the earth's
ozone layer.
Special charging equipment and lubricant is required
when servicing your NISSAN air conditioner.
Using improper ...
U0100 Lost communication (ECM A)
Description
CAN (Controller Area Network) is a serial communication line for real-time
application. It is an on-vehicle multiplex
communication line with high data communication speed and excellent malfunction
detection ability.
Many electronic control units are equipped onto a vehicle, an ...