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Home >> Nissan-Datsun >> 2021 >> NV3500 HD S >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Security Control System >> System Description >> Component Parts >> Vehicle Security System >> Component Description
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Component Description

No.

Component

Function

1.

Combination meter

  • Combination meter transmits the vehicle speed signal to BCM via CAN communication.
  • Security indicator lamp is located on combination meter.
  • Security indicator lamp blinks when ignition switch is in any position other than ON to warn that NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS [NVIS (NATS)] is on board.
  • BCM also receives the vehicle speed signal from ABS actuator and electric unit (control unit) via CAN communication. BCM compares both signals to detect the vehicle speed.

Refer to Component Description .

2.

Security indicator lamp

Indicates the status of the security system.

3.

Main power window and door lock/unlock switch

Door lock and unlock switch transmits door lock/unlock operation signal to BCM.

Refer to Main Power Window and Door Lock/Unlock Switch .

4.

Power window and door lock/unlock switch RH

Door lock and unlock switch transmits door lock/unlock operation signal to BCM.

Refer to Power Window and Door Lock/Unlock Switch RH .

5.

BCM (Body Control Module)

Verifies the received signal from ignition key, then informs ECM whether to allow engine start.

Refer to Component Location for detailed component location.

6.

Fuse block (J/B)

Fuse Block (J/B) contains several fuses required for the vehicle security system.

7.

Horn relay

Horn relay provides power supply to horns when the security system is activated.

8.

IPDM E/R (Intelligent Power Distribution Module Engine Room)

IPDM E/R detects ignition switch status, and transmits ignition switch status signal to BCM.

Refer to Component Location for detailed component location.

9.

Horn (low)

IPDM E/R energizes the horns when the security system is activated.

Refer to Horn .

10.

Horn (high)

IPDM E/R energizes the horns when the security system is activated.

Refer to Horn .

11.

Front door lock assembly LH (key cylinder switch)

  • Door lock actuator is integrated in door lock assembly. Door lock actuator receives lock/unlock signal from BCM, and then locks/unlocks door.
  • Front door lock assembly LH integrates key cylinder switch. Key cylinder switch transmits key cylinder lock/unlock signal to BCM.

Refer to Front Door Lock Assembly LH

12.

Front door switch LH

Door switch detects door open/close condition and then transmits ON/OFF signal to BCM.

Refer to Front Door Switch LH .

13.

Back door switch upper RH

Door switch detects door open/close condition and then transmits ON/OFF signal to BCM.

Refer to Back Door Switch Upper RH .

14.

Back door lock assembly (key cylinder switch)

  • Door lock actuator is integrated in door lock assembly. Door lock actuator receives lock/unlock signal from BCM, and then locks/unlocks door.
  • Back door lock assembly integrates key cylinder switch. Key cylinder switch transmits key cylinder lock/unlock signal to BCM.

Refer to Back Door Lock Assembly .

15.

Back door switch lower LH

Door switch detects door open/close condition and then transmits ON/OFF signal to BCM.

Refer to Back Door Switch Lower LH .

16.

Back door switch lower RH

Door switch detects door open/close condition and then transmits ON/OFF signal to BCM.

Refer to Back Door Switch Lower RH .

17.

Sliding door switch

Door switch detects door open/close condition and then transmits ON/OFF signal to BCM.

Refer to Sliding Door Switch .

18.

Sliding door contact switch (door)

Door switch detects door open/close condition and then transmits ON/OFF signal to BCM.

Refer to Sliding Door Contact Switch .

19.

Front door switch RH

Door switch detects door open/close condition and then transmits ON/OFF signal to BCM.

Refer to Front Door Switch RH .

20.

Sliding door contact switch (pillar)

Door switch detects door open/close condition and then transmits ON/OFF signal to BCM.

Refer to Sliding Door Contact Switch .

21.

Sliding door lock assembly (key cylinder switch)

  • Door lock actuator is integrated in door lock assembly. Door lock actuator receives lock/unlock signal from BCM, and then locks/unlocks door.
  • Sliding door lock assembly integrates key cylinder switch. Key cylinder switch transmits key cylinder lock/unlock signal to BCM.

Refer to Sliding Door Lock Assembly .

22.

Secondary sliding door switch (if equipped)

Door switch detects door open/close condition and then transmits ON/OFF signal to BCM.

Refer to Secondary Sliding Door Switch .