Nissan Murano: System (intelligent Key System) / Back Door Open Function

Nissan Murano (Z52) 2015-2024 Service Manual / Body Exterior, Doors, Roof & Vehicle Security / Door & Lock :: System Description / System (intelligent Key System) / Back Door Open Function

System Description

SYSTEM DIAGRAM

INPUT SIGNAL AND OUTPUT SIGNAL

Signal name	Input	Output	Description
Key ID signal	Remote keyless entry receiver	BCM	The BCM receives key ID signal inputs and activates the actuators accordingly.
Outside key antenna (rear bumper) signal	Outside key antenna (rear bumper)	BCM	The BCM receives outside key antenna (rear bumper) signals inputs and activates the actuators accordingly.
Inside key antenna signal	Inside key antenna	BCM	The BCM receives inside key antenna signals inputs and activates the actuators accordingly.
Back door opener switch signal	Back door opener switch	BCM	The BCM receives back door opener switch signal inputs and activates the actuators accordingly.
Back door switch signal	Automatic back door switch	BCM	The BCM receives back door switch signal inputs and activates the actuators accordingly.
Shift position signal	TCM	BCM (CAN)	The BCM receives shift position signal inputs and activates the actuators accordingly.
Nissan Murano Vehicle speed signal	Combination meter	BCM (CAN)	The BCM receives Nissan Murano vehicle speed signal inputs and activates the actuators accordingly.
Back door open request signal	BCM	Automatic back door control module (CAN)	The BCM receives back door open request signal inputs and activates the actuators accordingly.

SYSTEM DESCRIPTION

This section describes the operation of the back door opener switch.

The back door open function can open the back door by pressing the back door opener switch while carrying the Intelligent Key and all doors (except back door) are locked.
The back door open function enables the back door to be opened by pressing back door opener switch after BCM transmits UNLOCK signal to each door.

BACK DOOR OPEN

While back door open is in the permitted state, back door opens when back door opener switch is pressed after back door request switch is operated. Back door open also can be operated according to the following procedure:

When the BCM detects that back door opener switch is pressed, it activates the outside key antenna (rear bumper) and inside key antenna and transmits the request signal to the Intelligent Key and then checks that the Intelligent Key is near the back door.
If the Intelligent Key is within the outside key antenna detection area, it receives the request signal and transmits the key ID signal to the BCM via the remote keyless entry receiver.
BCM receives the key ID signal and compares it with the registered key ID.
If the verification result is OK, BCM transmits the back door open request signal to automatic back door control module via CAN communication.
Automatic back door control module transmits back door open request signal to back door lock assembly and back door is open.
When the back door is open, automatic back door system performs waiting operation for next back door close operation.

The operation of the back door open is the same as the automatic back door system. Refer to System Description.

OPERATION CONDITION

If the following conditions are not satisfied, back door open operation is not performed even if the back door opener switch is operated:

Back door opener switch operation	Operation condition
Back door open	Nissan Murano Vehicle speed is less than 5 km/h (3 MPH). Intelligent Key is within outside key antenna (rear bumper) detection area. Back door is closed. Panic alarm is not activated.

OUTSIDE KEY ANTENNA DETECTION AREA

The outside key antenna detection area of back door open function is in the range of approximately 80 cm (31.50 in) surrounding the outside key antenna (rear bumper) (1). However, this operating range depends on the ambient conditions.

LIST OF OPERATION RELATED PARTS

Parts marked with × are the parts related to operation.

Function	Intelligent Key	Back door opener switch	Back door lock assembly	Inside key antenna	Outside key antenna (rear bumper)	CAN communication system	BCM	Automatic back door control module
Back door open function	×	×	×	×	×	×	×	×

Door Lock Function

System Description SYSTEM DIAGRAMOnly when pressing the door request switch it is possible to lock and unlock the door by carrying the Intelligent Key...

Remote Keyless Entry Function

System Description SYSTEM DIAGRAMSYSTEM DESCRIPTIONThe 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...

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