2008 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE

Door Switch Check

  1. CHECK FRONT DOOR SWITCH INPUT SIGNAL 

    With CONSULT-III 

    Check front door switches ("DOOR SW-DR" and "DOOR SW-AS") in "DATA MONITOR" mode with CONSULT-III.

    DATA MONITOR

    Monitor item Condition
    DOOR SW-DR OPEN: ON
    CLOSE: OFF
    DOOR SW-AS OPEN: ON
    CLOSE: OFF

    Without CONSULT-III 

    Check voltage between BCM connector and ground.

    CONNECTOR TERMINAL VOLTAGE SPECIFICATION

    Item Connector Terminals Condition Voltage (V) (Approx.)
    (+) (-)
    Front RH M18 12 Ground OPEN 0
    CLOSE Battery voltage
    Front LH M19 47 OPEN 0
    CLOSE Battery voltage
    Fig 1: Checking Voltage Between BCM Connector And Ground
    G04902774Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Front door switch is OK.

    NG: GO TO 2.

  2. CHECK FRONT DOOR SWITCH CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect front door switch LH or RH and BCM.
    3. Check continuity between front door switch connector B21 (LH) or B28 (RH) terminal 2 and BCM connector M19 terminal 47 (LH) or connector M18 terminal 12 (RH).

      Front LH 

      2 - 47 : Continuity should exist. 

      Front RH 

      2 - 12 : Continuity should exist. 

    4. Check continuity between front door switch connector B21 (LH) or B28 (RH) terminal 2 and ground.

      2 - Ground : Continuity should not exist. 

      Fig 2: Checking Continuity Between Front Door Switch Connector Terminal 2 And BCM Connector M19 Terminal 47 Connector M18 Terminal 12
      G04902775Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO 3.

    NG: Repair or replace harness.

  3. CHECK DOOR SWITCH 
    1. Disconnect front door switch LH or RH.
    2. Check continuity between each front door switch terminal 2 and body ground part of front door switch.
      CONNECTOR TERMINAL CONTINUITY SPECIFICATION

      Terminal Door switch Continuity
      2 Body ground part of front door switch Pushed No
      Released Yes
      Fig 3: Checking Continuity Between Door Switches Terminal 2 And Ground
      G04902776Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".

    NG: Replace malfunctioning front door switch.

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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