Nissan Frontier. Manual - part 240

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< 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

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< BASIC INSPECTION >

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INSPECTION AND ADJUSTMENT

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

INFOID:0000000009478854

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:0000000009478855

Refer to the CONSULT Immobilizer mode and follow the on-screen instructions.

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< SYSTEM DESCRIPTION >

AUTOMATIC DOOR LOCKS

SYSTEM DESCRIPTION

AUTOMATIC DOOR LOCKS

System Diagram

INFOID:0000000009478856

System Description

INFOID:0000000009478857

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 

BCS-15, "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 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. 

ALKIA1722GB

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

AUTOMATIC DOOR LOCKS

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< SYSTEM DESCRIPTION >

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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 

BCS-15,

"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 

BCS-

15, "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