Nissan Sentra manuals

Nissan Sentra Service Manual: System description

Component parts

POWER DOOR LOCK SYSTEM

POWER DOOR LOCK SYSTEM : Component Parts Location


  1. BCM (view with instrument panel removed)
  2. Front door switch LH
  3. Front door lock actuator LH
  4. Front door lock assembly LH
  5. Front door switch RH
  6. Front door lock actuator RH
  7. Rear door switch RH
  8. Rear door lock actuator RH
  9. Rear door lock switch LH
  10. Rear door lock actuator LH
  11. Main power window and door lock/ unlock switch
  12. Power window and door lock/unlock switch RH

POWER DOOR LOCK SYSTEM : Component Description

Item

Function

BCM Controls the door lock system
Door switch Inputs door open/close condition to BCM
Door lock and unlock switch
  • Detects if door lock and unlock switch is press/release
  • Integrated in the main power window and door lock/unlock switch and power window and door lock/unlock switch (RH)
Door lock actuator Output lock/unlock signal from BCM and locks/unlocks each door

Intelligent key system

Intelligent key system : component parts location



  1. BCM (view with instrument panel removed)
  2. Front door switch LH
  3. Door request switch LH
  4. Outside key antenna (driver side)
  5. Front door switch RH
  6. Door request switch RH
  7. Outside key antenna (passenger side)
  8. Rear door switch RH (rear door switch LH similar)
  9. CVT shift selector (park position switch) (view with center console removed)
  10. Brake switch
  11. Push-button ignition switch
  12. Remote keyless entry receiver (view with instrument panel removed)
  13. Combination meter
  14. IPDM E/R
  15. Inside key antenna (instrument center)
  16. Inside key antenna (console) (view with center console removed)
  17. Inside key antenna (trunk room)
  18. Trunk lid opener assembly
  19. Outside key antenna (rear bumper) (view with rear bumper facia removed)
  20. Horn relay
  21. Horn
  22. Intelligent Key warning buzzer

Intelligent key system : component description

Item

Function

BCM Controls the Intelligent Key system
Trunk room lamp switch Inputs trunk lid open/close condition to BCM.
Door lock actuator Output lock/unlock signal from BCM and locks/unlocks each door.
Stop lamp switch Inputs the brake pedal position condition to BCM.
Push button ignition switch Inputs the push button ignition switch ON/OFF condition to BCM.
Door switch Inputs door open/close condition to BCM.
Remote keyless entry receiver Receives lock/unlock signal from the Intelligent Key, and then transmits to BCM.
Request switch Inputs lock/unlock operation to BCM.
Intelligent Key Transmits button operation to remote keyless entry receiver.
Outside key antenna Detects if Intelligent Key is outside the vehicle.
Inside key antenna Detects if Intelligent Key is inside the vehicle.
Combination meter Display, buzzer (combination meter) and KEY warning lamp are installed to combination meter.

Trunk lid opener system

Trunk lid opener system : component parts location


  1. Trunk lid opener switch
  2. BCM (view with instrument panel removed
  3. Trunk lid opener assembly (trunk lid opener actuator and trunk room lamp switch)
  4. Trunk opener request switch

Trunk lid opener system : component description

Item

Function

BCM Controls the Intelligent Key system.
Trunk opener request switch Inputs the trunk open request to the BCM.
Trunk lid opener actuator Releases the mechanical latch to open the trunk lid.
Trunk lid opener switch Inputs the trunk open request to the BCM.
Trunk room lamp switch Inputs the trunk lid open/close condition to the BCM.

System (power door lock system)

System Diagram

System Description


System Description

DOOR LOCK FUNCTION


DOOR LOCK FUNCTION

Door Key Cylinder

Selective unlock operation mode can be changed using “AUTO LOCK SET” mode in “WORK SUPPORT”.

Refer to DLK-36, "DOOR LOCK : CONSULT Function (BCM - DOOR LOCK)".

AUTOMATIC DOOR LOCKS (LOCK OPERATION)

The automatic door locks function is the function that locks all doors linked with the vehicle speed or shift position.

Vehicle Speed Sensing Auto Door Lock*1 All doors are locked when the vehicle speed reaches 24 km/h (15 MPH) or more.

BCM outputs the lock signal to all door lock actuators when it detects that the ignition switch is turned ON, all doors are closed and the vehicle speed received from the combination meter via CAN communication becomes 24 km/h (15 MPH) or more.

If a door is opened and closed at any time during one ignition cycle (OFF → ON), even after initial auto door lock operation has taken place, the BCM will relock all doors when the vehicle speed reaches 24 km/h (15 MPH) or more again.

Setting change of Automatic Door Locks (LOCK) Function

The LOCK operation setting of the automatic door locks function can be changed.

The ON/OFF switching of the automatic door locks (LOCK) function and the type With CONSULT


The ON/OFF switching of the automatic door locks (LOCK) function and the type selection of the automatic door locks (LOCK) function can be performed at the WORK SUPPORT setting of CONSULT. Refer to DLK-36, "DOOR LOCK : CONSULT Function (BCM - DOOR LOCK)".

The automatic door locks (LOCK) function can be switched ON/OFF by performing Without CONSULT


The automatic door locks (LOCK) function can be switched ON/OFF by performing the following operation.

  1. Close all doors (door switch OFF)
  2. Push the ignition switch to the ON position
  3. Press and hold the door lock and unlock switch for 5 seconds or more in the lock direction within 20 seconds after turning the ignition switch ON.
  4. The switching is completed when the hazard lamp blinks.

OFF → ON : 2 blinks

ON → OFF : 1 blink

  1. The ignition switch must be turned OFF and ON again between each setting change.

AUTOMATIC DOOR LOCKS (UNLOCK OPERATION)

The automatic door locks (UNLOCK) function is the function that unlocks all doors linked with the key position or shift position.

IGN OFF Interlock Door Unlock*1 All doors are unlocked when the power supply position is changed from ON to OFF.

BCM outputs the unlock signal to all door lock actuators when it detects that the power supply position is changed from ignition switch ON to OFF.

Setting change of Automatic Door Locks (UNLOCK) Function

The UNLOCK operation setting of the automatic door locks function can be changed.

The ON/OFF switching of the automatic door locks (UNLOCK) function and the With CONSULT


The ON/OFF switching of the automatic door locks (UNLOCK) function and the type selection of the automatic door locks (UNLOCK) function can be performed at the WORK SUPPORT setting of CONSULT. Refer to DLK- 36, "DOOR LOCK : CONSULT Function (BCM - DOOR LOCK)".

The automatic door locks (UNLOCK) function can be switched ON/OFF by Without CONSULT


The automatic door locks (UNLOCK) function can be switched ON/OFF by performing the following operation.

  1. Close all doors (door switch OFF)
  2. Place the ignition switch in the ON position
  3. Press and hold the door lock and unlock switch for 5 seconds or more in the unlock direction within 20 seconds after turning the power supply position ON.
  4. The switching is completed when the hazard lamp blinks.

OFF → ON : 2 blinks

ON → OFF : 1 blink

  1. The ignition switch must be turned OFF and ON again between each setting change.

*1: This function is set to ON before delivery.

System (intelligent key system)

Intelligent key system

SYSTEM DIAGRAM

SYSTEM DESCRIPTION


SYSTEM DESCRIPTION

NOTE:

The driver should always carry the Intelligent Key

Function

Description

Refer

Door lock Lock/unlock can be performed by pressing the request switch DLK-25
Trunk open The trunk lid can be opened by carrying the Intelligent Key and pressing the trunk lid opener switch DLK-27
Remote keyless entry Lock/unlock can be performed by pressing the remote controller button of the Intelligent Key DLK-28
Key reminder The key reminder buzzer sounds a warning if the door is locked with the key left inside the vehicle DLK-30
Warning If an action that does not meet the operating condition of the Intelligent Key system is taken, the buzzer sounds to inform the driver DLK-31
Engine start The engine can be turned on while carrying the Intelligent Key DLK-24
Interior room lamp control Interior room lamp is controlled according to door lock/unlock state DLK-22

Door lock function

Door lock function : system description

SYSTEM DIAGRAM

DOOR REQUEST SWITCH OPERATION


DOOR REQUEST SWITCH OPERATION

When pressing the request switch, it is possible to lock and unlock the door by carrying the Intelligent Key.

OPERATION DESCRIPTION

OPERATION CONDITION

If the following conditions are satisfied, door lock/unlock operation is performed if the door request switch is operated.

Each request switch operation

Operation condition

Lock
  • All doors are closed
  • Ignition switch is in the LOCK or OFF position
  • Panic alarm is not activated
  • Intelligent Key is outside the vehicle
  • Intelligent Key is within outside key antenna detection area
  • P position warning is not activated
Unlock
  • All doors are closed
  • Ignition switch is in the LOCK or OFF position
  • Panic alarm is not activated
  • Intelligent Key is outside the vehicle
  • Intelligent Key is within outside key antenna detection area *

*: Even with a registered Intelligent Key remaining inside the vehicle, door locks can be unlocked from outside of the vehicle with a spare Intelligent Key as long as key IDs are different.

Door lock function can be changed using “LOCK/UNLOCK BY I-KEY” mode in “WORK SUPPORT”. Refer to DLK-36, "INTELLIGENT KEY : CONSULT Function (BCM - INTELLIGENT KEY)".

OUTSIDE KEY ANTENNA DETECTION AREA

The outside key antenna detection area of door lock/unlock function is in the range of approximately 80 cm (31.50 in) surrounding the driver, passenger door handles (1). However, this operating range depends on the ambient conditions.

HAZARD AND BUZZER REMINDER FUNCTION


HAZARD AND BUZZER REMINDER FUNCTION

For the operation check, BCM blinks hazard warning lamps (lock: 1 time, unlock: 2 times) and sounds Intelligent Key warning buzzer (lock: 1 time, unlock: 2 times) when door lock or unlock operates by operation of each door request switch.

How to Change Hazard and Buzzer Reminder Mode

Refer to DLK-36, "INTELLIGENT KEY : CONSULT Function (BCM - INTELLIGENT KEY)".

AUTO DOOR LOCK FUNCTION

After door is unlocked by door request switch operation and if 30 seconds or more passes without performing the following operation, all doors are automatically locked. However, operation check function does not activate.

Operating condition
  • Door switch is ON (door is open)
  • BCM receives lock signal
  • Push switch is pressed

Auto door lock mode can be changed by the “AUTO LOCK SET” mode in “WORK SUPPORT”. Refer to DLK- 36, "INTELLIGENT KEY : CONSULT Function (BCM - INTELLIGENT KEY)".

LIST OF OPERATION RELATED PARTS

Parts marked with × are the parts related to operation.

Trunk open function


Trunk open function

Trunk open function : system description

System Diagram

TRUNK LID OPENER OPERATION


TRUNK LID OPENER OPERATION

OPERATION CONDITION

If the following conditions are satisfied, the trunk lid can be opened.

Trunk lid open function

Operation condition

Trunk open operation
  • Vehicle speed is less than 5 km/h (3 MPH)
  • Intelligent Key is within outside key antenna (rear bumper) detection area
  • Trunk lid is closed

OUTSIDE KEY ANTENNA DETECTION AREA

The outside key antenna detection area of trunk lid open function is in the range of approximately 80 cm (31.50 in) surrounding trunk lid opener switch (1). However, this operating range depends on the ambient conditions.

List of operation related parts


List of operation related parts

Parts marked with ÷ are the parts related to operation.

Remote keyless entry function


Remote keyless entry function

Remote keyless entry function : system description

System diagram

REMOTE KEYLESS ENTRY OPERATION


REMOTE KEYLESS ENTRY OPERATION

The Intelligent Key has the same functions as the remote control entry system. Therefore, it can be used in the same manner as the remote controller by operating the door lock/unlock button.

Remote keyless entry system controls operation of the following items.

OPERATION AREA

To check that the Intelligent Key works normally, use within 1 m (3 ft) range of each door, however the operable range may differ according to surroundings.

DOOR LOCK/UNLOCK FUNCTION

OPERATION CONDITION

Remote controller operation

Operation condition

Lock
  • All door are closed
  • Ignition switch is in the LOCK or OFF position
  • Panic alarm is not activated
  • P position warning is not activated
Unlock
  • Ignition switch is in the LOCK or OFF position
  • Intelligent Key is outside the vehicle
  • Panic alarm is not activated
  • P position warning is not activated

TRUNK OPEN FUNCTION

OPERATION CONDITION

Remote controller operation

Operation condition

Trunk open
  • Press and hold the trunk open button for 0.4 second or more*
  • Ignition switch is except the ON position
  • Vehicle speed is less than 5 km/h (3 MPH)

*: Pattern of trunk open button can be selected using CONSULT. Refer to DLK-36, "INTELLIGENT KEY : CONSULT Function (BCM - INTELLIGENT KEY)".

PANIC ALARM FUNCTION

When ignition switch is OFF, BCM transmits theft warning horn request signal to IPDM E/R. Then, IPDM E/R turns on and off horn intermittently.

The horn sounds intermittently.

The alarm automatically turns off.

How to Change Panic Alarm Operation Mode

Refer to DLK-36, "INTELLIGENT KEY : CONSULT Function (BCM - INTELLIGENT KEY)".

HAZARD AND BUZZER REMINDER FUNCTION

For the operation check, BCM blinks hazard warning lamps (lock: 1 time, unlock: 2 times) and sounds Intelligent Key warning buzzer (lock: 1 time, unlock: 2 times) when door lock or unlock operates by each remote controller button operation of Intelligent Key.

How to Change Hazard and Buzzer Reminder Mode

Refer to DLK-36, "INTELLIGENT KEY : CONSULT Function (BCM - INTELLIGENT KEY)".

AUTO DOOR LOCK FUNCTION

After door is unlocked by Intelligent Key button operation and if 30 seconds or more passes without performing the following operation, all doors are automatically locked. However, operation check function does not activate.

Operating condition
  • Door switch is ON (door is open)
  • BCM receives lock signal
  • Push switch is pressed

Auto door lock mode can be changed by the “AUTO LOCK SET” mode in “WORK SUPPORT”. Refer to DLK- 36, "INTELLIGENT KEY : CONSULT Function (BCM - INTELLIGENT KEY)".

List of operation related parts

Parts marked with × are the parts related to operation

Key reminder function


Key reminder function

Key reminder function : system description

System Diagram

BASIC OPERATION


BASIC OPERATION

Key reminder is the function that prevents the key from being left in the vehicle.

Key reminder has the following 3 functions.

Key reminder function

Operation condition

Operation

Driver side door closed* Right after driver side door is closed under the following conditions
  • Intelligent Key is inside the vehicle
  • Driver side door is opened
  • Driver side door is in unlock state
All doors unlock
Door is open or closed Right after all doors are closed under the following conditions
  • Door lock/unlock switch or driver side door lock knob are operated
  • Intelligent Key is inside the vehicle
  • Any door is opened
  • All doors are locked.
  • All doors unlock
  • Honk Intelligent Key warning buzzer
Trunk is closed Right after trunk is closed under the following conditions
  • Intelligent Key is inside trunk room
  • All doors are closed
  • All doors are locked
  • Trunk open
  • Honk Intelligent Key warning buzzer

*:When closing the door if something comes into contact with the door lock switch it might activate the door locks accidentally, but the unlock operation will override this.

NOTE:

The above function operates when the Intelligent Key is inside the vehicle. However, there may be times when the Intelligent Key cannot be detected, and this function does not operate when the Intelligent Key is on the instrument panel, rear parcel shelf, or in the glove box. Also, this system sometimes does not operate if the Intelligent Key is in the door pocket for the open door.

Warning function

Warning function : system description

OPERATION DESCRIPTION

The warning function are as per the following items and are given to the user as warning information and warnings using combinations of Intelligent Key warning buzzer, combination meter buzzer, KEY warning lamp, shift P warning lamp and engine start operation indicator lamp.

OPERATION CONDITION

Operation condition of warning and information is as per the following table.


*: M/T models do not apply.


*: M/T models do not apply.

Warning method

The following table shows the alarm or warning methods with chime.

List of operation related parts


List of operation related parts

Parts marked with ÷ are the parts related to operation

System (trunk lid opener system)


System (trunk lid opener system)

System diagram

System description


System description

Trunk lid opener operation

When trunk lid opener switch is on, bcm operates trunk lid opener actuator.

Operation condition

If the following conditions are satisfied, trunk open operation is performed.

Trunk lid opener switch operation

Operation condition

Trunk lid open
  • Trunk lid opener switch is on
  • Vehicle speed is less than 5 km/h (3 mph)
Preparation
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Diagnosis system  (BCM)
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