Nissan Versa Sedan. Instruction - part 685

SEC-12

< SYSTEM DESCRIPTION >

[WITH INTELLIGENT KEY SYSTEM]

COMPONENT PARTS

• P/N position signal from TCM

• P/N position signal from BCM (CAN)

SYSTEM

SEC-13

< SYSTEM DESCRIPTION >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

SYSTEM

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION : System Description

INFOID:0000000009268369

SYSTEM DIAGRAM

SYSTEM DESCRIPTION 

• The engine start function of Intelligent Key system makes it possible to start and stop the engine without

using the key, based on the electronic ID verification. The electronic ID verification is performed between

BCM and Intelligent Key when the push-button ignition switch is pressed while the Intelligent Key is within

the detection area of inside key antenna.

NOTE:

The driver should carry the Intelligent Key at all times.

• Intelligent Key has 2 IDs (Intelligent Key ID and NATS ID). It can perform the door lock/unlock operation and

the push-button ignition switch operation when the registered Intelligent Key is carried.

• If the ID is successfully verified, when push-button ignition switch is pressed the engine can be started.

• Up to 4 Intelligent Keys can be registered (Including the standard Intelligent Key) upon request from the cus-

tomer.

NOTE:

Refer to 

STR-8, "STARTING SYSTEM (WITHOUT INTELLIGENT KEY) : System Description"

 for any func-

tions other than engine start function of Intelligent Key system.

ALKIA2828GB

SEC-14

< SYSTEM DESCRIPTION >

[WITH INTELLIGENT KEY SYSTEM]

SYSTEM

PRECAUTIONS FOR INTELLIGENT KEY SYSTEM

The transponder (the chip for NATS ID verification) is integrated into the Intelligent Key. (For the con-

ventional models, it is integrated into the mechanical key.) Therefore, ID verification cannot be per-

formed by mechanical key only.

In that case, NATS ID verification can be performed when Intelligent Key backside is contacted to

push-button ignition switch while brake pedal is depressed. If verification result is OK, engine can be

started.

OPERATION WHEN INTELLIGENT KEY IS CARRIED

1. When the push-button ignition switch is pressed, the BCM activates the inside key antenna and transmits

the request signal to the Intelligent Key.

2. The Intelligent Key receives the request signal and transmits the Intelligent Key ID signal to the BCM.
3. BCM receives the Intelligent Key ID signal via remote keyless entry receiver and verifies it with the regis-

tered ID.

4. BCM turns ACC relay ON and transmits the ignition power supply ON signal to IPDM E/R.
5. IPDM E/R turns the ignition relay ON and starts the ignition power supply.
6. IPDM E/R turns the starter control relay ON for engine starting in advance.
7. BCM detects the selector lever position and brake pedal operation condition.
8. BCM transmits the 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.

9. Power supply is supplied through the starter relay and the starter control relay to operate the starter motor.

CAUTION:

If a malfunction is detected in the Intelligent Key system, the “KEY” warning lamp on the combina-

tion meter illuminates. At that time, the engine cannot be started.

10. When BCM receives feedback signal from ECM indicating that the engine is started, the 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.)

CAUTION:

When the Intelligent Key is carried outside of the vehicle (inside key antenna detection area) while

the power supply is in the ACC or ON position, even if the engine start condition* is satisfied, the

engine cannot be started.

*: For the engine start condition, refer to “IGNITION SWITCH POSITION CHANGE TABLE BY PUSH-BUT-

TON IGNITION SWITCH OPERATION”.

OPERATION RANGE

Engine can be started when Intelligent Key is inside the vehicle. However, sometimes engine may not start

when Intelligent Key is on instrument panel or in glove box.

ENGINE START OPERATION WHEN INTELLIGENT KEY IS CONTACTED TO PUSH-BUTTON IG-
NITION SWITCH

When Intelligent Key battery is discharged, NATS ID verification between transponder in Intelligent Key and

BCM is performed when Intelligent Key backside is contacted to push-button ignition switch while brake pedal

is depressed. If the verification result is OK, engine can be started.

IGNITION SWITCH POSITION CHANGE TABLE BY PUSH-BUTTON IGNITION SWITCH OPERA-
TION

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)

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

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.

NISSAN ANTI-THEFT SYSTEM

Power supply position

Condition

Push-button ignition switch 

operation frequency

Selector lever

Brake pedal operation 

condition

OFF 

→ ACC

—

Not depressed

1

OFF 

→ ACC → ON

—

Not depressed

2

OFF 

→ ACC → ON → 

OFF

—

Not depressed

3

OFF 

→ START

ACC 

→ START

ON 

→ START

P or N position

Depressed

1

Engine is running 

→ 

OFF

—

—

1

Power supply position

Condition

Push-button ignition switch 

operation frequency

Selector lever

Brake pedal operation 

condition

Engine is running 

→ 

ACC 

—

—

Emergency stop operation

Engine stall return oper-
ation while driving 

N position

Not depressed

1