Nissan Pathfinder: Door & Lock - Component Parts

Nissan Pathfinder (R53) 2022-2025 Service Manual / Body Exterior, Doors, Roof & Vehicle Security :: Door & Lock / System Description / Component Parts

Power Door Lock System
Intelligent Key System
Homelink® Universal Transceiver
Automatic Back Door System

Power Door Lock System Nissan Pathfinder Fifth generation

Component Parts Location

No.	Component	Function
1.	Back door lock assembly	Refer to Back Door Lock Assembly.
2.	Rear door lock assembly RH	Refer to Door Lock Assembly.
3.	Front door lock assembly RH	Refer to Door Lock Assembly.
4.	Door lock/unlock switch RH	Refer to Door Lock/Unlock Switch RH.
5.	BCM (Body Control Module)	Controls the door lock system. Refer to Component Part Location for detailed component location.
6.	Door lock/unlock switch LH	Refer to Door Lock/Unlock Switch LH.
7.	Front door lock assembly LH	Refer to Door Lock Assembly.
8.	Rear door lock assembly LH	Refer to Door Lock Assembly.
9.	Fuel filler lid door lock actuator	Fuel filler lid door lock actuator locks/unlocks the fuel filler lid door latch assembly.
10.	Back door opener switch	Back door opener switch sends signal to BCM to open the back door.

Intelligent Key System Nissan Pathfinder

Component Parts Location

No.	Component	Function
1.	Back door lock assembly (ajar switch)	Refer to Back Door Lock Assembly.
2.	Intelligent Key warning buzzer	Refer to Intelligent Key Warning Buzzer.
3.	Inside key antenna (luggage room)	Refer to Inside Key Antenna.
4.	Rear door lock assembly RH	Refer to Door Lock Assembly.
5.	Rear door request switch RH (if so equipped)	Refer to Door Request Switch.
6.	Outside key antenna (rear door RH)	Refer to Outside Key Antenna.
7.	Inside key antenna (console)	Refer to Inside Key Antenna.
8.	Front door lock assembly RH	Refer to Door Lock Assembly.
9.	Front door request switch RH	Refer to Door Request Switch.
10.	Intelligent Key Unit	Refer to Intelligent Key Unit.
11.	Horn (low)	Horn is operated when the panic button on the Intelligent Key is pressed or the alarm is activated.
12.	Horn (high)	Horn is operated when the panic button on the Intelligent Key is pressed or the alarm is activated.
13.	IPDM E/R (Intelligent Power Distribution Module Engine Room)	IPDM E/R activates horns. Refer to Component Parts Location for detailed component location.
14.	BCM (Body Control Module)	BCM controls INTELLIGENT KEY SYSTEM (ENGINE START FUNCTION), NISSAN Nissan Pathfinder Vehicle IMMOBILIZER SYSTEM-NATS [NVIS (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 ignition switch is placed in the ON position. If the ID verification result is OK, ignition switch operation is available. Then, when the ignition switch is placed in the ON position, BCM performs ID verification between BCM and ECM. If the ID verification result is OK, ECM can start engine. Refer to Component Part Location for detailed component location.
15.	Push-button ignition switch	Push-button ignition switch has push switch inside which detects that push-button ignition switch is pressed, and then transmits ON/OFF signal to BCM. BCM changes the ignition switch position with the operation of push-button ignition switch. BCM maintains the ignition switch position status while push-button ignition switch is not operated.
16.	Front door lock assembly LH	Refer to Door Lock Assembly.
17.	Front door request switch LH	Refer to Door Request Switch.
18.	Outside key antenna (rear door LH)	Refer to Outside Key Antenna.
19.	Rear door request switch LH (if so equipped)	Refer to Door Request Switch.
20.	Rear door lock assembly LH	Refer to Door Lock Assembly.
21.	Outside key antenna (rear bumper)	Refer to Outside Key Antenna.
22.	Back door opener switch	Refer to Back Door Opener Switch.

Homelink® Universal Transceiver Nissan Pathfinder

Component Parts Location

No.	Component	Function
1.	Auto anti-dazzling inside mirror	Refer to Smart Rear View Mirror.

Automatic Back Door System Nissan Pathfinder SUV

Component Parts Location

A.	View of back door open	B.	View of LH side of instrument panel	C.	View of rear fascia removed
D.	View of back door

No.	Component	Function
1.	Intelligent Key Unit	Refer to Intelligent Key Unit.
2.	BCM (Body Control Module)	Transmits and receives signal to the automatic back door control module. Refer to Component Part Location for detailed component location.
3.	Automatic back door control unit	Refer to Automatic Back Door Control Unit.
4.	Intelligent Key warning buzzer	Refer to Intelligent Key Warning Buzzer.
5.	Back door lock assembly	Refer to Back Door Lock Assembly.
6.	Automatic back door lock and close switch assembly	Refer to Automatic Back Door Lock and Close Switch Assembly.
7.	Spindle unit LH	Refer to Spindle Unit.
8.	Touch sensor LH	Refer to Touch Sensor.
9.	Touch sensor RH	Refer to Touch Sensor.
10.	Spindle unit RH	Refer to Spindle Unit.
11.	Automatic back door switch	Refer to Automatic Back Door Switch.
12.	Hands free sensor (upper side) (if so equipped)	Refer to Hands Free Sensor Control Unit.
13.	Hands free sensor control unit (If so equipped)	Refer to Hands Free Sensor Control Unit.
14.	Hands free sensor (lower side) (if so equipped)	Refer to Hands Free Sensor Control Unit.
15.	Back door opener switch	Refer to Back Door Opener Switch.

Automatic Back Door Lock and Close Switch Assembly

Automatic back door lock and close switch assembly is installed back door inner finisher.
When automatic back door close switch is pressed, back door auto close or reverse operation.
When automatic back door lock and close switch is pressed, back door auto close and door lock operation.

Automatic Back Door Control Unit

Automatic back door control unit is installed behind luggage side lower finisher LH.
The automatic back door control unit detects the statuses of the back door and the Nissan Pathfinder vehicle using various signals to control the automatic back door system.
Automatic back door control unit controls the automatic back door system.

Automatic Back Door Switch

Automatic back door switch is installed instrument lower panel LH.
When automatic back door switch is pressed, back door auto open/close operation.
Transmits automatic back door switch signal to automatic back door control unit.

Back Door Lock Assembly

Back door lock assembly is installed in back door panel.
The back door lock assembly detects the back door status of the automatic back door system.
Back door lock assembly integrates closure motor, half latch switch, open switch, close switch and ajar switch.
Closure motor: Inputs open/close signal from automatic back door control unit and activates the back door auto closure operation.
Half latch switch: Detects half status of back door.
Open switch: Stops the closure motor open operation.
Close switch: Stops the closure motor close operation
Ajar switch: Detects open/close status of back door.

Back Door Opener Switch

Back door opener switch assembly is installed in back door panel.
When the BCM receives the back door opener switch signal, it opens the back door.
When the Intelligent Key unit receives the door request switch signal, it unlocks all the doors.
The back door opener switch detects back door opening operations and transmits the back door opener switch signal to the BCM.
The door request switch detects door lock/unlock operations from the outside of the Nissan Pathfinder vehicle and transmits the door request switch signal to the Intelligent Key unit.

Door Lock Assembly

Door lock assemblies are installed in each doors.
Door lock actuator locks/unlocks door.
Detects door open/close condition.
Unlock sensor detects lock/unlock status of driver side front door.
Door lock actuator receives lock/unlock signal from BCM, and then locks/unlocks door.
Unlock sensor transmits lock/unlock status of driver side front door to BCM.
Transmits door switch signal to BCM.

Door Lock/Unlock Switch LH

Door lock and unlock switch LH is integrated in the main power window and door lock/unlock switch.
Door lock and unlock switch LH transmits door lock/unlock signal operation to the BCM.

Door Lock/Unlock Switch RH

Door lock and unlock switch RH is installed to front door finisher (passenger side).
Door lock and unlock switch RH transmits door lock/unlock signal operation to the BCM.

Door Request Switch

Door request switches are installed in the outside handle.
Transmits door request switch signal to Intelligent Key unit.

Hands Free Sensor

Hands free sensor (upper side) and hands free sensor (lower side) are installed in the rear bumper fascia.
When the user performs a kick motion toward the rear bumper while carrying Intelligent Key as shown in the figure, hands free sensor (upper side) detects shin motion of leg and hands free sensor (lower side) detects instep motion of foot. This varies the voltage waveform of hands free sensor. Hands free sensor control unit judges user operation by detecting the voltage change of hands free sensor.

NOTE:
Voltage generated in the communication circuit between the hands free sensor and the hands free sensor control unit is extremely low and therefore cannot be measured.
Intelligent Key must be carried for starting the operation of the automatic back door open/close function by hands free sensor operation (hands free function). Intelligent Key does not need to be carried when stopping the back door operation during automatic back door open/close operation (automatic open/close temporary stop function).
The hands free sensor converts the distance of feet to voltage and transmits it to the hands free sensor control unit.

Hands Free Sensor Control Unit

Hands free sensor control unit is installed in the rear bumper fascia.
Only when hands free sensor (upper side) and hands free sensor (lower side) simultaneously detect that feet are approaching, the sensors will allow the operation of the auto open/close function of the back door be judged.
Hands free sensor control unit judges user operation by detecting the voltage waveform change of hands free sensor (upper side) and hands free sensor (lower side). The hands free sensor control unit then transmits the automatic back door operation request signal to BCM via serial communication.

Inside Key Antenna

Inside key antenna (luggage room) is installed in behind the rear seat cushion.
Inside key antenna (console) is installed in the console.
Detects that Intelligent Key is within the inside detection area.
Transmits detection status to Intelligent Key unit.

Intelligent Key Unit

Intelligent Key unit is behind instrument panel.
Intelligent Key unit controls the Intelligent Key system.
When the door request switch or Intelligent Key button is pressed, Intelligent Key unit transmits door lock/unlock request signal to BCM via CAN communication.

Intelligent Key Warning Buzzer

Intelligent Key warning buzzer is installed behind the rear bumper fascia.
The Intelligent Key warning buzzer checks the operation of the Intelligent Key, the door request switch, or automatic back door and warns the user outside of the Nissan Pathfinder vehicle when they are operated inappropriately.
Operates when signal is received from Intelligent Key unit.

Outside Key Antenna

Outside key antenna (rear door) are installed in backside of rear door finisher.
Outside key antenna (rear bumper) is installed in backside of rear bumper fascia.
Detects that Intelligent Key is within the outside detection area.
Transmits detection status to Intelligent Key unit.
Transmits request signal to Intelligent Key.

Spindle Unit

Spindle unit installed in back door.
Encoder: Automatic back door control unit receives the pulse signals from encoders A and B that occurred due to synchronization with the back door operation. The automatic back door control unit calculates the back door position, operation direction, and operation speed according to the received pulse signals.
Spindle motor: Inputs open/close signal from automatic back door control unit and activates the automatic back door open/close operation.
Transmit encoder signal to automatic back door control unit.

Touch Sensor

Touch sensor is installed in back door panel.
During back door close operation, the touch sensor detects any trapped foreign material.
Transmits touch sensor signal to automatic back door control unit.