Nissan Leaf. Manual - part 1063

 

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Nissan Leaf. Manual - part 1063

 

 

SEC-14

< SYSTEM DESCRIPTION >

[WITH INTELLIGENT KEY SYSTEM]

SYSTEM

When Intelligent Key battery is discharged, the NVIS (NATS) ID verification between transponder integrated

into Intelligent Key and BCM is performed when Intelligent Key backside is contacted to power switch. If the

verification result is OK, vehicle can be set to READY.

READY SET CONDITION TABLE BY POWER SWITCH OPERATION

The vehicle can be set to READY by the following operations.

For details for the power supply position, refer to 

PCS-35, "POWER DISTRIBUTION SYSTEM : System

Description"

.

NOTE:

• When an Intelligent Key is within the detection area of inside key antenna and when Intelligent Key backside

is contacted to power switch, it is equivalent to the operations below.

• When setting the vehicle to READY, the BCM monitors READY set conditions,

- Brake pedal operating condition

- Shift 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 power switch for 2 seconds or more.
• Press the power switch 3 times or more within 1.5 seconds.

NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS

Vehicle condition

Power switch operation frequency

Shift position

Brake pedal operation 

condition

OFF 

→ ACC

Not depressed

1

OFF 

→ ACC → ON

Not depressed

2

OFF 

→ ACC → ON → OFF

Not depressed

3

OFF 

→ READY

ACC 

→ READY

ON 

→ READY

P or N

Depressed

1

READY 

→ OFF

1

Vehicle condition

Power switch operation frequency

Shift position

Brake pedal operation 

condition

READY 

→ ACC 

Emergency stop operation

ACC 

→ READY

(Return operation after emergency 
stop operation while driving)

N position

1

SYSTEM

SEC-15

< SYSTEM DESCRIPTION >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS : System Description

INFOID:0000000010119231

SYSTEM DIAGRAM

INPUT/OUTPUT SIGNAL CHART

Input Signal Item

Output Signal Item

SYSTEM DESCRIPTION

ALKIA3529GB

Transmit unit

Signal name

VCM

CAN communication

ID verification signal
VCM status signal
READY set signal
Shift position signal

IPDM E/R

Power switch status signal
P position signal

Combination meter

Vehicle speed signal

ABS actuator and electric unit (control unit)

Vehicle speed signal

NATS antenna amp.

Key ID signal

Power switch

Power switch operation signal

Stop lamp switch

Brake pedal operation signal

Reception unit

Signal name

VCM

CAN communication

ID verification signal

READY signal

Combination meter

Security indicator lamp signal

SEC-16

< SYSTEM DESCRIPTION >

[WITH INTELLIGENT KEY SYSTEM]

SYSTEM

• The NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS [NVIS (NATS)] prevents the vehicle from being set

to READY by Intelligent Key whose ID is not registered to the vehicle (BCM). It has higher protection against

auto theft involving the duplication of mechanical keys.

• The mechanical key integrated into the Intelligent Key cannot set the vehicle to READY. When the Intelligent

Key battery is discharged, the NVIS (NATS) ID verification is performed between the transponder integrated

into Intelligent Key and BCM via NATS antenna amp. when the Intelligent Key backside is contacted to

power switch. If the verification results are OK, the vehicle can be set to READY by the power switch opera-

tion.

• Security indicator lamp is located on combination meter, and always blinks when the power switch is in any

position other than ON to warn that the vehicle is equipped with NVIS (NATS).

• Up to 4 Intelligent Keys can be registered upon request from the owner.

• When replacing VCM, BCM or Intelligent Key, the specified procedure (Initialization and registration) using

CONSULT is required.

• Possible symptom of NVIS (NATS) malfunction is “Vehicle cannot be set to READY”. This symptom also

occurs because of other than NVIS (NATS) malfunction, so start the trouble diagnosis according to 

SEC-62,

"Work Flow"

.

• If VCM other than genuine part is installed, the vehicle cannot be set to READY. For VCM replacement pro-

cedure, refer to 

EVC-423, "Removal and Installation"

.

PRECAUTIONS FOR KEY REGISTRATION

• When registering the Intelligent Key, perform the procedure following the instruction of CONSULT display.

• The ID registration procedure erases the current NVIS (NATS) ID once, and then reregisters a new ID.

Therefore before starting the registration procedure, collect all registered Intelligent Keys from the customer.

SECURITY INDICATOR LAMP

Security indicator lamp always blinks when the power switch is in any position other than ON, to warn that the

vehicle is equipped with NVIS (NATS).

NOTE:

Because security indicator lamp is highly efficient, the 12V battery is barely affected.

OPERATION WHEN INTELLIGENT KEY IS CONTACTED TO POWER SWITCH

1. When brake pedal is depressed while shift position is P, BCM activates NATS antenna amp. which is

located behind power switch.

2. When Intelligent Key (transponder built-in) backside is contacted to power switch, BCM starts NVIS

(NATS) ID verification between BCM and Intelligent Key (transponder built-in) via NATS antenna amp.

3. When the NVIS (NATS) ID verification result is OK, buzzer in combination meter sounds.
4. BCM turns ACC relay ON and transmits ON power supply signal to IPDM E/R.
5. IPDM E/R turns the ignition relay ON to start ON power supply.
6. BCM detects that the shift position and brake pedal operating position.
7. BCM transmits READY signal to VCM if BCM judges that the READY set condition* is satisfied.

*: For READY set condition, refer to “READY SET CONDITION TABLE BY POWER SWITCH OPERA-

TION” below.

8. When BCM receives feedback signal from VCM indicating that the vehicle is set to READY, BCM stops

transmitting READY signal.

READY SET CONDITION TABLE BY POWER SWITCH OPERATION

The vehicle can be set to READY by the following operations.

For details for the power supply position, refer to 

PCS-35, "POWER DISTRIBUTION SYSTEM : System

Description"

.

NOTE:

• When an Intelligent Key is within the detection area of inside key antenna and when Intelligent Key backside

is contacted to power switch, it is equivalent to the operations below.

• When setting the vehicle to READY, the BCM monitors READY set conditions,

- Brake pedal operating condition

- Shift position

- Vehicle speed

Vehicle speed: less than 4 km/h (2.5 MPH)

SYSTEM

SEC-17

< SYSTEM DESCRIPTION >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

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

Emergency stop operation
• Press and hold the power switch for 2 seconds or more.
• Press the power switch 3 times or more within 1.5 seconds.

VEHICLE SECURITY SYSTEM

Vehicle condition

Power switch operation frequency

Shift position

Brake pedal operation 

condition

OFF 

→ ACC

Not depressed

1

OFF 

→ ACC → ON

Not depressed

2

OFF 

→ ACC → ON → OFF

Not depressed

3

OFF 

→ READY

ACC 

→ READY

ON 

→ READY

P or N

Depressed

1

READY 

→ OFF

1

Vehicle condition

Power switch operation frequency

Shift position

Brake pedal operation 

condition

READY 

→ ACC 

Emergency stop operation

ACC 

→ READY

(Return operation after emergency 
stop operation while driving)

N position

1

 

 

 

 

 

 

 

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