Nissan X-Trail 32. Manual - part 1812

SYSTEM

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< SYSTEM DESCRIPTION >

[WITH INTELLIGENT KEY SYSTEM]

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SYSTEM

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION : System Description

INFOID:0000000010922116

SYSTEM DIAGRAM

BCM INPUT/OUTPUT SIGNAL CHART

Input Signal Item

JMKIB3758GB

SEC-16

< SYSTEM DESCRIPTION >

[WITH INTELLIGENT KEY SYSTEM]

SYSTEM

Output Signal Item

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 have ID (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, steering lock is released and

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 

DLK-38, "INTELLIGENT KEY SYSTEM : System Description"

 (With super lock) or 

DLK-348,

"INTELLIGENT KEY SYSTEM : System Description"

 (Without super lock) for any functions other than

engine start function of Intelligent Key system.

Transmit unit

Signal name

ECM

CAN communication

• Engine status signal
• Starter control relay request signal

IPDM E/R

• Push-button ignition switch status 

signal

• Ignition ON signal
• Starter relay/Starter control relay 

status signal

• Starter control relay status signal
• Neutral position signal

Combination meter

Vehicle speed signal (Meter)

ABS actuator and electric unit (control unit)

Vehicle speed signal (ABS)

TCM (CVT models)

Shift position signal

Steering lock unit

• Steering lock unit lock status signal
• Steering lock unit unlock status sig-

nal

• Lock/unlock position signal
• Steering lock undefined position 

signal

• Steering lock wrong code signal

Push-button ignition switch

Push-button ignition switch operation signal

Each door switch

Door open/close condition signal

Stop lamp switch

Brake pedal operation signal

CVT shift selector (detention switch) (CVT models)

P position signal

Transmission range switch (CVT models)

P/N position signal

Clutch interlock switch (M/T models)

Clutch interlock switch signal

Reverse/Neutral position switch

Neutral position switch signal

Reception unit

Signal name

IPDM E/R

CAN communication

Ignition ON signal

Combination meter

Key warning lamp signal

Steering lock unit

• Steering lock unit unlock request signal
• Steering lock unit lock request signal
• Steering lock code signal
• Ignition ON signal

Inside key antenna

Key ID request signal

SYSTEM

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< SYSTEM DESCRIPTION >

[WITH INTELLIGENT KEY SYSTEM]

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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 NATS ID signal to the BCM.

3.

BCM receives the NATS ID signal verifies it with the registered ID.

4.

When immobilizer verification result is OK, BCM supplies power to the steering lock unit, and transmits
the steering lock unit unlock request signal via CAN communication.

5.

When the steering lock unit receives a steering lock unit unlock request signal from the BCM, it sends the
following signals to the BCM.
• Lock/unlock position signal
• Steering lock unit lock status signal
• Steering lock undefined position signal
• Steering lock wrong code signal

6.

When BCM receives a steering lock unit unlock status signal from the steering lock unit, it stops the steer-
ing lock unit unlock request signal.

7.

When the ignition switch is turned to ON, BCM performs ID verification with the ECM. When the result is
OK, engine start is permitted.

8.

BCM detects the selector lever position and brake pedal operation condition.

9.

When ECM detects that the start engine conditions* are satisfied, it transmits a starter control relay
request signal to BCM.

10. When BCM receives a starter control relay request signal from ECM, the starter control relay is turned

ON.

11. When starter control relay is turned ON, IPDM E/R turns ON the starter relay and drives the starter motor.
12. When BCM receives an engine status signal from ECM, it turns the starter relay and starter control relay

OFF and stops cranking.

CAUTION:

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

STEERING LOCK OPERATION

When the shift position is P and the ignition switch is turned OFF, when BCM detects the following statuses, a
steering lock unit lock request signal is transmitted to the steering lock unit via CAN communication, and
steering wheel is locked.
• Closing door
• Opening door
• Door is locked using door request switch
• Door is locked using Intelligent Key

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.

SEC-18

< SYSTEM DESCRIPTION >

[WITH INTELLIGENT KEY SYSTEM]

SYSTEM

• When starting the engine, the BCM monitors under the engine start conditions,

CVT models

- Brake pedal operation condition
- Selector lever position
- Vehicle speed

M/T models

- Clutch pedal operation condition
- Brake pedal operation condition
- Vehicle speed
- Shift lever position

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.

Power supply 

position

Condition

Push-button igni-

tion switch oper-

ation frequency

CVT models

M/T models

Selector lever

Brake pedal 

operation 

condition

Normal condition

Special condition

Shift lever 

Clutch pedal 

operation 

condition

Shift lever

Brake pedal 

operation 

condition

LOCK 

→

 ON

—

Not de-

pressed

—

Not de-

pressed

—

Not de-

pressed

1

LOCK 

→

 ON 

→

 

OFF

—

Not de-

pressed

—

Not de-

pressed

—

Not de-

pressed

2

LOCK 

→

 

START
ON 

→

 START

P or N posi-

tion

Depressed

—

Depressed

Neutral

Depressed

1

Engine is run-
ning 

→

 LOCK

—

—

—

—

—

—

1

Power supply 

position

Condition

Push-button igni-

tion switch opera-

tion frequency

CVT models

M/T models

Selector lever

Brake pedal 

operation 

condition

Normal condition

Special condition

Shift lever

Clutch pedal 

operation 

condition

Shift lever

Brake pedal 

operation 

condition

Engine is run-
ning 

→

 OFF 

—

—

—

—

—

—

Emergency stop 

operation

Engine stall re-
turn operation 
while driving 

N position

Not de-

pressed

—

Depressed

Neutral

—

1