Nissan Sentra. Manual — part 745
SEC-8
< SYSTEM DESCRIPTION >
[WITH INTELLIGENT KEY SYSTEM]
COMPONENT PARTS
Component Description
INFOID:0000000009756666
CVT Shift Selector (Park Position Switch)
INFOID:0000000009756667
Park position switch detects that CVT shift selector is in the P (Park) position and then transmits the signal to
BCM and IPDM E/R.
BCM confirms the CVT shift selector position with the following 5 signals:
• P (Park) position signal from CVT shift selector (park position switch)
• P/N position signal from TCM
• P (Park) position signal from IPDM E/R (CAN)
• P/N position signal from IPDM E/R (CAN)
• P/N position signal from TCM (CAN)
IPDM E/R confirms the CVT shift selector position with the following 3 signals:
• P (Park) position signal from CVT shift selector (park position switch)
• P/N position signal from TCM
• P/N position signal from BCM (CAN)
BCM
INFOID:0000000009756668
BCM controls INTELLIGENT KEY SYSTEM (ENGINE START FUNCTION), NISSAN VEHICLE IMMOBI-
LIZER SYSTEM-NATS (NATS), and VEHICLE SECURITY SYSTEM.
BCM performs the ID verification between BCM and Intelligent Key when the Intelligent Key is carried into the
detection area of inside key antenna and push-button ignition switch is pressed. If the ID verification result is
OK, push-button ignition switch operation is available.
10. Dongle unit (Canada only)
11. Remote keyless entry receiver (view
with instrument panel removed)
12. Inside key antenna (instrument cen-
ter)
13. Inside key antenna (console) (view
with center console removed)
14. Inside key antenna (trunk)
15. Front door switch RH
16. Outside key antenna (passenger
side)
17. Front door switch LH
18. Outside key antenna (driver side)
19. Rear door switch RH
20. Rear door switch LH
21. Transmission range switch (CVT)
22. Outside key antenna (rear bumper)
23. Clutch interlock switch (M/T)
24. Park/neutral position (PNP) switch
(neutral switch) (M/T)
Component Reference
CVT shift selector (park position switch)
BCM
ECM
IPDM E/R
NATS antenna amp.
Combination meter
Door switch
Outside key antenna
Inside key antenna
Intelligent Key
Push-button ignition switch
Remote keyless entry receiver
Security indicator lamp
Starter relay
Stop lamp switch
Transmission range switch (CVT)
Park/neutral position (PNP) switch (neutral switch) (M/T)
Clutch interlock switch (M/T)
COMPONENT PARTS
SEC-9
< SYSTEM DESCRIPTION >
[WITH INTELLIGENT KEY SYSTEM]
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Then, when the power supply position is turned ON, BCM performs ID verification between BCM and ECM. If
the ID verification result is OK, ECM can start engine.
ECM
INFOID:0000000009756669
ECM controls the engine.
When power supply position is turned ON, BCM starts communication with ECM and performs the ID verifica-
tion between BCM and ECM.
If the verification result is OK, the engine can start. If the verification result is invalid, the engine can not start.
IPDM E/R
INFOID:0000000009756670
IPDM E/R has the starter relay and starter control relay inside. Starter relay and starter control relay are used
for the engine starting function. IPDM E/R controls these relays while communicating with BCM.
NATS Antenna Amp.
INFOID:0000000009756671
The ID verification is performed between BCM and transponder in Intelligent Key via NATS antenna amp.
when Intelligent Key backside is contacted to push-button ignition switch in case that Intelligent Key battery is
discharged. If the ID verification result is OK, the operation of starting engine is available.
Combination Meter
INFOID:0000000009756672
Combination meter transmits the vehicle speed signal to BCM via CAN communication.
BCM also receives the vehicle speed signal from ABS actuator and electric unit (control unit) via CAN commu-
nication. BCM compares both signals to detect the vehicle speed.
Door Switch
INFOID:0000000009756673
Door switch detects door open/close condition and then transmits ON/OFF signal to BCM.
Outside Key Antenna
INFOID:0000000009756674
Outside key antenna detects whether Intelligent Key is outside the vehicle and transmits the signal to BCM.
Three outside key antennas are installed in the front outside handle LH, front outside handle RH and rear
bumper.
Inside Key Antenna
INFOID:0000000009756675
Inside key antenna detects whether Intelligent Key is inside the vehicle and transmits the signal to BCM.
Three inside key antennas are installed in the instrument center, console and trunk room.
Remote Keyless Entry Receiver
INFOID:0000000009756676
Remote keyless entry receiver receives each button operation signal and electronic key ID signal from Intelli-
gent Key and then transmits the signal to BCM.
Intelligent Key
INFOID:0000000009756677
Each Intelligent Key has an individual electronic ID and transmits the ID signal by request from BCM.
Carrying the Intelligent Key whose ID is registered in BCM, the driver can perform, remote start, door lock/
unlock operation, remote liftgate, panic alarm and push-button ignition switch operation.
Push-button Ignition Switch
INFOID:0000000009756678
Push-button ignition switch detects that push-button is pressed and then transmits the signal to BCM. BCM
changes the power supply position with the operation of push-button ignition switch. BCM maintains the power
supply position status while push-button is not operated.
Security Indicator Lamp
INFOID:0000000009756679
Security indicator lamp is located on combination meter.
Security indicator lamp blinks when power supply position is any position other than ON to warn that NISSAN
VEHICLE IMMOBILIZER SYSTEM-NATS (NATS) is on board.
SEC-10
< SYSTEM DESCRIPTION >
[WITH INTELLIGENT KEY SYSTEM]
COMPONENT PARTS
Starter Relay
INFOID:0000000009756680
Engine starting system functions by controlling both starter relay and starter control relay.
Both relays are integrated in IPDM E/R. Starter relay is controlled by BCM, and starter control relay is con-
trolled by IPDM E/R on request from BCM.
IPDM E/R transmits starter relay and starter control relay status signal to BCM via CAN communication.
Stop Lamp Switch
INFOID:0000000009756681
Stop lamp switch detects that brake pedal is depressed, and then transmits the signal to BCM.
Transmission Range Switch
INFOID:0000000009756682
Transmission range switch is integrated in CVT assembly, and detects the CVT shift selector position.
TCM receives the transmission range switch signal and then transmits the P/N position signal to BCM and
IPDM E/R.
BCM confirms the CVT shift selector position with the following 5 signals:
• P (Park) position signal from CVT shift selector (park position switch)
• P/N position signal from TCM
• P (Park) position signal from IPDM E/R (CAN)
• P/N position signal from IPDM E/R (CAN)
• P/N position signal from TCM (CAN)
IPDM E/R confirms the CVT shift selector position with the following 3 signals:
• P (Park) position signal from CVT shift selector (park position switch)
• P/N position signal from TCM
• P/N position signal from BCM (CAN)
Park/neutral position (PNP) switch (neutral switch)
INFOID:0000000010288764
Park/neutral position (PNP) switch detects that shift lever is in the neutral position, and then transmits ON/OFF
signal to BCM.
Clutch interlock switch
INFOID:0000000010288765
Clutch interlock switch detects that clutch pedal is depressed, then provides power source to starter control
relay and starter relay, and transmits ON/OFF signal to BCM.
SYSTEM
SEC-11
< 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:0000000009756683
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:
SEC-14, "NISSAN ANTI-THEFT SYSTEM : System Description"
for any functions other than engine
start function of Intelligent Key system.
AWKIA2871GB
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