Nissan Sentra B18 (2020-2025) Service Manual: Remote Keyless Entry Function

Nissan Sentra B18 (2020-2025) Service Manual / Body Exterior, Doors, Roof & Vehicle Security / Door & Lock :: System Description / System (intelligent Key System) / Remote Keyless Entry Function

System Diagram

System Diagram

System Description

System Description

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.

OPERATION

Remote keyless entry system controls operation of the following items:

Door lock/unlock function
Auto door lock function
Hazard and horn reminder function

INPUT SIGNAL AND OUTPUT SIGNAL

Signal name	Input	Output	Description
Key ID signal	Intelligent Key	Intelligent Key unit	The Intelligent Key unit receives key ID signal inputs and activates the actuators accordingly.
Outside key antenna signal	Outside key antenna	Intelligent Key unit	The Intelligent Key unit receives outside key antenna signals inputs and activates the actuators accordingly.
Inside key antenna signal	Inside key antenna	Intelligent Key unit	The Intelligent Key unit receives inside key antenna signals inputs and activates the actuators accordingly.
Push switch signal	Push-button ignition switch	Intelligent Key unit	The Intelligent Key unit receives push switch signal inputs and activates the actuators accordingly.
Door switch signal	Door switch	BCM	The BCM receives door switch signals inputs and activates the actuators accordingly.

OPERATION AREA

The remote keyless entry operating range is approximately 33 ft (10 m) from the Nissan Sentra vehicle.

DOOR LOCK/UNLOCK FUNCTION

When door lock/unlock button of the Intelligent Key is pressed, lock signal or unlock signal transmitted from Intelligent Key to Intelligent Key unit.
When Intelligent Key unit receives the door lock/unlock signal, it operates all door lock actuators, blinks the hazard lamp (lock: 2 time, unlock: 1 times) and horn chirp signal to IPDM E/R at the same time as a reminder.
IPDM E/R honks horn (lock: 1 time) as a reminder.

OPERATION CONDITION

If the following condition are satisfied, remote keyless entry operation is performed when the Intelligent Key is operated:

Remote controller operation	Operation condition
Lock	Panic alarm is not activated. P (Park) position warning is not activated.
Unlock	Panic alarm is not activated.

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 locked. However, operation check function does not activate:

Operating condition

Door switch is ON. (door is open)
Door is locked.
Push switch is pressed.

How To Change Auto Door Lock Operation Mode.

CONSULT

Auto door lock mode can be changed.

Refer to CONSULT Function (BCM - INTELLIGENT KEY).

HAZARD AND HORN REMINDER FUNCTION

When doors are locked or unlocked by Intelligent Key, BCM blinks hazard warning lamps as a reminder.

The hazard and horn reminder has a horn chirp mode (C mode) and a non-horn chirp mode (S mode).

Operating Function of Hazard and Horn Reminder

	C mode		S mode
Intelligent Key operation	Lock	Unlock	Lock	Unlock
Hazard warning lamp blinks	Twice	Once	Twice	—
Horn sound	Once	—	—	—

Hazard and horn reminder does not operate in the following conditions:

Ignition switch is ON.
Door is open (only lock operation).

How to Change Hazard and Horn Reminder Mode

CONSULT

Hazard and horn reminder operation mode can be changed.

Refer to CONSULT Function (BCM - INTELLIGENT KEY).

CONSULT

When LOCK and UNLOCK signals are sent from the Intelligent Key for more than 2 seconds at the same time, the hazard and horn reminder mode is changed and hazard warning lamp blinks and horn sounds as per the following items:

LIST OF OPERATION RELATED PARTS

Parts marked with × are the parts related to operation.

Function	Intelligent Key	Door switch	Door lock actuator	Push-button ignition switch	CAN communication system	BCM	IPDM E/R	Horn	Combination meter	Hazard warning lamp
Door lock/unlock function	×	×	×			×
Auto door lock function	×	×	×	×		×
Hazard and horn reminder function					×	×	×	×	×	×

Door Lock Function

System Diagram System Diagram System Description System Description Only when pressing the door request switch it is possible to lock and unlock the door by carrying the Intelligent ...

Warning Function

System Description 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 combi ...

Other materials:

Ambient sensor signal circuit
Description It detects outside air temperature and converts it into a resistance value which is then input into the combination meter. Diagnosis Procedure Regarding wiring diagram information, refer to mwi-28, "wiring diagram". 1.Check ambient sensor signal circuit Turn igniti ...

Inspection
Inspection INSPECTION AFTER REMOVAL Shock Absorber Check the following items and replace the parts if necessary. Check the shock absorber for oil leaks, deformation, cracks, and other damage. Check the piston rod for damage, uneven wear, and distortion. Bound Bumper ...

Precaution for Work
When removing or disassembling each component, be careful not to damage or deform it. If a component may be subject to interference, be sure to protect it with a shop cloth. When removing (disengaging) components with a screwdriver or similar tool, be sure to wrap the component with a ...