Nissan Pathfinder (2009 year). Manual - part 150

DIAGNOSIS AND REPAIR WORKFLOW

DLK-9

< BASIC INSPECTION >

[WITH INTELLIGENT KEY SYSTEM]

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The Diagnostic Procedure described based on open circuit inspection. A short circuit inspection is also
required for the circuit check in the Diagnostic Procedure.
Is malfunctioning part detected?

YES

>> GO TO 8

NO

>> Check voltage of related BCM terminals using CONSULT-III.

8.

REPAIR OR REPLACE THE MALFUNCTIONING PART

1.

Repair or replace the malfunctioning part.

2.

Reconnect parts or connectors disconnected during Diagnostic Procedure again after repair and replace-
ment.

3.

Check DTC. If DTC is displayed, erase it.

>> GO TO 9

9.

FINAL CHECK

When DTC was detected in step 2, perform DTC Confirmation Procedure or Component Function Check
again, and then check that the malfunction have been repaired securely.
When symptom was described from the customer, refer to confirmed symptom in step 3 or 4, and check that
the symptom is not detected.
Is the inspection result normal?

NO (DTC is detected)>>GO TO 7
NO (Symptom remains)>>GO TO 6
YES

>> Inspection End.

2009 Pathfinder

DLK-10

< BASIC INSPECTION >

[WITH INTELLIGENT KEY SYSTEM]

INSPECTION AND ADJUSTMENT

INSPECTION AND ADJUSTMENT

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description

INFOID:0000000003938101

Perform the system initialization when replacing BCM, replacing Intelligent Key or registering an additional
Intelligent Key.

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Re-
quirement

INFOID:0000000003938102

Refer to the CONSULT-III Operation Manual for the initialization procedure.

2009 Pathfinder

AUTOMATIC DOOR LOCKS

DLK-11

< FUNCTION DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

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FUNCTION DIAGNOSIS

AUTOMATIC DOOR LOCKS

System Diagram

INFOID:0000000004394088

System Description

INFOID:0000000004394089

DOOR LOCK FUNCTION

• The door lock and unlock switch (driver side) is built into power window main switch.
• The door lock and unlock switch (passenger side) is on door trim.
• Interlocked with the locking operation of door lock and unlock switch, door lock actuators of all doors are

locked.

• Interlocked with the unlocking operation of door lock and unlock switch, door lock actuators of all doors are

unlocked.

Door Key Cylinder

• With the door key inserted in the door key cylinder on driver side, turning it to “LOCK”, will lock door lock

actuator of all doors.

• With the door key inserted in the door key cylinder on driver side, turning it to “UNLOCK” once unlocks the

driver side door lock actuator; turning it to “UNLOCK” again within 5 seconds after the first unlock operation
unlocks all of the other doors. - (SELECTIVE UNLOCK OPERATION)

Selective unlock operation mode can be changed using “DOOR LOCK-UNLOCK SET” mode in “WORK SUP-
PORT”. Refer to 

DLK-41, "DOOR LOCK : CONSULT-III Function (BCM - DOOR LOCK)"

.

AUTOMATIC DOOR LOCKS (LOCK OPERATION)

The interlock door lock function is the function that locks all doors linked with the vehicle speed. 

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 15 MPH (24 km/h) or more. 

ALKIA1482GB

Input

Single

Function

Actuator

Door lock/unlock switch

Door lock/unlock signal

Door lock function

Each door lock actuator

Door key cylinder switch

Each door switch

Door open/close signal

Key reminder function

Combination meter

Warning buzzer signal

Vehicle speed signal

Automatic door lock/unlock 
function

TCM

Shift position signal

2009 Pathfinder

DLK-12

< FUNCTION DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

AUTOMATIC DOOR LOCKS

If a door is opened and closed at any time during one ignition cycle (OFF 

→

 ON), even after initial auto door

lock has taken place, the BCM will relock all doors when the vehicle speed reaches 15 MPH (24 km/h) or more
again.

Setting change of Automatic Door Locks (LOCK) Function

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

With CONSULT-III

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-III. Refer to 

DLK-

41, "DOOR LOCK : CONSULT-III Function (BCM - DOOR LOCK)"

. 

Without CONSULT- III

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

1.

Close all doors (door switch OFF).

2.

Turn ignition switch ON.

3.

Within 20 seconds of turning the ignition switch ON, press and hold the door lock and unlock switch to the
LOCK position for more than 5 seconds. 

4.

The switching is completed when the hazard lamps blink. 

5.

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. 

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

With CONSULT-III

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-III. Refer to

DLK-41, "DOOR LOCK : CONSULT-III Function (BCM - DOOR LOCK)"

. 

Without CONSULT- III

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

1.

Close all doors (door switch OFF).

2.

Turn ignition switch ON.

3.

Within 20 seconds of turning the ignition switch ON, press and hold the door lock and unlock switch to the
UNLOCK position for more than 5 seconds. 

4.

The switching is completed when the hazard lamps blink. 

5.

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

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

OFF 

→

 ON

: 2 blinks

ON 

→

 OFF

: 1 blink

OFF 

→

 ON

: 2 blinks

ON 

→

 OFF

: 1 blink

2009 Pathfinder

AUTOMATIC DOOR LOCKS

DLK-13

< FUNCTION DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

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Component Parts Location

INFOID:0000000004394090

Component Description

INFOID:0000000004394091

ALKIA1697ZZ

1.

Key switch and ignition knob switch M66 2.

BCM M18, M19, M20

3.

Front door lock assembly LH (key 
cylinder switch) D14
Front door lock actuator RH D114

4.

Main power window and door lock/un-
lock switch D7, D8

5.

Front door switch LH B8
RH B108

6.

Rear door switch LH B18
RH B116

7.

Power window and door lock/unlock 
switch RH D105

8.

Back door latch (door ajar switch) D502 9.

Rear door lock actuator LH D205
RH D305

10. Combination meter M24

Item

Function

BCM

Controls the door lock function and room lamp function.

Door lock and unlock switch

Input lock or unlock signal to BCM.

2009 Pathfinder

DLK-14

< FUNCTION DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

AUTOMATIC DOOR LOCKS

Door lock actuator

Output lock/unlock signal from BCM and locks/unlocks each door.

Door switch

Input door open/close condition to BCM.

Door key cylinder switch

• Input lock or unlock signal to main power window and door lock/unlock switch.
• Main power window and door lock/unlock switch transmits door lock/unlock signal to BCM.

Combination meter

• Receive buzzer signal from BCM via CAN communication line, and sounds the buzzer.
• Transmits vehicle speed signal to CAN communication line.

Item

Function

2009 Pathfinder

DOOR LOCK FUNCTION

DLK-15

< FUNCTION DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

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DOOR LOCK FUNCTION

DOOR LOCK AND UNLOCK SWITCH

DOOR LOCK AND UNLOCK SWITCH : System Diagram

INFOID:0000000003938103

DOOR LOCK AND UNLOCK SWITCH : System Description

INFOID:0000000003938104

DOOR LOCK FUNCTION

Functions Available by Operating the Door Lock and Unlock Switches on Driver Door and Passenger Door

• Interlocked with the locking operation of door lock and unlock switch, door lock actuators of all doors are

locked, back door opener switch is disabled, and mechanical glass hatch switch is disabled.

• Interlocked with the unlocking operation of door lock and unlock switch, door lock actuators of all doors are

unlocked, back door opener switch is enabled, and mechanical glass hatch switch is enabled.

• When the back door opener switch is pressed, the Intelligent Key unit terminal 24 receives signal from the

back door opener switch terminal 1.

• The Intelligent Key unit checks the park/neutral switch position and vehicle speed. If the back door operating

enable conditions are met, it sends a signal through terminal 23 to the BCM terminal 30. 

• When the BCM receives the signal, if the back door operating enable conditions are met, it sends a signal

through terminal 53 to open the back door latch.

Functions Available by Operating the Key Cylinder Switch on Driver Door

• Interlocked with the locking operation of door key cylinder, door lock actuators of all doors are locked, back

door opener switch is disabled, and mechanical glass hatch switch is disabled.

Selective Unlock Operation

• When door key cylinder is unlocked, door lock actuator driver side is unlocked.
• When door key cylinder is unlocked for the second time within 5 seconds after the first operation, door lock

actuators on all doors are unlocked.

Select unlock operation mode can be changed using DOOR LOCK-UNLOCK SET mode in “WORK SUP-
PORT”. Refer to 

DLK-41, "DOOR LOCK : CONSULT-III Function (BCM - DOOR LOCK)"

.

Key Reminder System

Refer to 

DLK-32, "System Description"

.

ALKIA0178GB

Switch

Input/output signal to BCM

BCM function

Actuator

Main power window and door 
lock/unlock switch

Door lock/unlock signal

Door lock/unlock control

Door lock actuators

Power window and door lock/
unlock switch

Door key cylinder switch

2009 Pathfinder

DLK-16

< FUNCTION DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

DOOR LOCK FUNCTION

DOOR LOCK AND UNLOCK SWITCH : Component Parts Location

INFOID:0000000003938105

DOOR LOCK AND UNLOCK SWITCH : Component Description

INFOID:0000000003938106

1.

Key switch and ignition knob switch M66 2.

BCM M18, M19, M20
(view with instrument panel removed)

3.

Front door lock assembly LH (key 
cylinder switch) D14
Front door lock actuator RH D114

4.

Main power window and door lock/un-
lock switch D7, D8

5.

Front door switch 
LH B8
RH B108

6.

Rear door switch
LH B18
RH B116

7.

Power window and door lock/unlock 
switch RH D105

8.

Back door latch (door ajar switch) 
D502

9.

Rear door lock actuator
LH D205
RH D305

10. Passenger select unlock relay M11

(view with instrument panel LH removed)

ALKIA1165ZZ

Item

Function

BCM

Controls the door lock function and room lamp function.

Door lock and unlock switch

Transmits lock or unlock signal to BCM.

Door lock actuator

Receives lock/unlock signal from BCM and locks/unlocks each door.

2009 Pathfinder