Nissan X-Trail 32. Manual — part 1812
SYSTEM
SEC-15
< SYSTEM DESCRIPTION >
[WITH INTELLIGENT KEY SYSTEM]
C
D
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F
G
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M
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B
SEC
N
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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
"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
SEC-17
< SYSTEM DESCRIPTION >
[WITH INTELLIGENT KEY SYSTEM]
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D
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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
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