2007 Lexus LS 460FACTORY OEM SERVICE PROCEDURE

Door Switch Check

WARNING: This page is about a different car, the 2004 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FRONT DOOR SWITCH INPUT SIGNAL 

    With CONSULT-II 

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

    MONITOR ITEM CONDITION

    Monitor item Condition
    DOOR SW-DR OPEN:ON
    CLOSE:OFF
    DOOR SW-AS OPEN:ON
    CLOSE:OFF
    Fig 1: Display Data Monitor
    G03512398Courtesy of NISSAN MOTOR CO., U.S.A.

    Without CONSULT-II 

    Check voltage between BCM connector and ground.

    ITEM TERMINAL CONDITION

    Item Connector Terminals (Wire color) Condition Voltage (V) (Approx.)
    (+) (-)
    Front RH M19 12 (R/L) Ground OPEN 0
    CLOSE Battery voltage
    Front LH M20 47 (SB) OPEN 0
    CLOSE Battery voltage

    OK or NG 

    1. OK: Front door switch is OK.
    2. NG: GO TO 2.
    Fig 2: Checking Voltage Between BCM Connector And Ground
    G03512399Courtesy of NISSAN MOTOR CO., U.S.A.
  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 B8 (LH) or B108 (RH) terminal 2 and BCM connector M19 terminal 47 (LH) or connector M18 terminal 12 (LH).

      Front LH 

      2 (SB) - 47 (SB): Continuity should exist. 

      Front RH 

      2 (R/L) - 12 (R/L): Continuity should exist. 

    4. Check continuity between front door switch connector B8 (LH) or B108 (RH) terminal 2 and ground.

      2 (SB or R/L) - Ground: Continuity should not exist. 

    OK or NG 

    1. OK: GO TO 3.
    2. NG: Repair or replace harness.
    Fig 3: Checking Continuity Between Front Door Switch Connector And BCM Connector Terminal
    G03512400Courtesy of NISSAN MOTOR CO., U.S.A.
  3. CHECK DOOR SWITCH 

    Check continuity between each front door switch terminal 2 and body ground part of front door switch.

    TERMINAL CONTINUITY SPECIFICATION

    Terminal Door switch Continuity
    2 Body ground part of front door switch Pushed No
    Released Yes

    OK or NG 

    1. OK: Replace BCM.
    2. NG: Replace malfunctioning front door switch.
    Fig 4: Checking Continuity Between Each Front Door Switch Terminal And Body Ground
    G03512401Courtesy of NISSAN MOTOR CO., U.S.A.
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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.