Nissan Xterra. Manual - part 191

DLK-6

< BASIC INSPECTION >

DIAGNOSIS AND REPAIR WORKFLOW

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.

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.

INSPECTION AND ADJUSTMENT

DLK-7

< BASIC INSPECTION >

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

INSPECTION AND ADJUSTMENT

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description

INFOID:0000000009485001

Perform the system initialization when replacing BCM, replacing a keyfob or registering an additional keyfob.

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

INFOID:0000000009485002

Refer to 

DLK-55, "ID Code Entry Procedure"

 (with CONSULT) or 

DLK-56, "ID Code Entry Procedure"

 (without

CONSULT).

DLK-8

< SYSTEM DESCRIPTION >

AUTOMATIC DOOR LOCKS

SYSTEM DESCRIPTION

AUTOMATIC DOOR LOCKS

System Diagram

INFOID:0000000009485003

System Description

INFOID:0000000009485004

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 door lock

actuators are locked.

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

actuators are unlocked.

Functions Available by Operating the Key Cylinder Switch on Driver Door or Back Door

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

locked.

Selective Unlock Operation

• When driver door key cylinder is unlocked, door lock actuator driver side is unlocked.

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

lock actuators on all doors are unlocked.

• When back door key cylinder is unlocked, back door lock actuator is unlocked.

• When back 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-18, "DOOR LOCK : CONSULT 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 15 MPH (24 km/h) or more. 

ALKIA1726GB

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

AUTOMATIC DOOR LOCKS

DLK-9

< SYSTEM DESCRIPTION >

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

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. 

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

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-18,

"DOOR LOCK : CONSULT Function (BCM - DOOR LOCK)"

. 

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. 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

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-

18, "DOOR LOCK : CONSULT Function (BCM - DOOR LOCK)"

. 

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. 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