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Door Lock/Unlock Switch Check

WARNING: This page is about a different car, the 2005 Nissan Xterra. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DOOR LOCK/UNLOCK SWITCH INPUT SIGNAL 

    With CONSULT-II

    Check door lock/unlock switch ("CDL LOCK SW""CDL UNLOCK SW") in DATA MONITOR mode in CONSULT-II. Refer to "DATA MONITOR ".

    • When door lock/unlock switch is turned to LOCK:

      CDL LOCK SW: ON 

    • When door lock/unlock switch is turned to UNLOCK:

      CDL UNLOCK SW: ON 

      Fig 1: CONSULT-II Display - Data Monitor Mode
      G03609370Courtesy of NISSAN MOTOR CO., U.S.A.

    Without CONSULT-II

    Check voltage between BCM connector M19 terminals 45, 46 and ground.

    BCM CONNECTOR TERMINALS AND VOLTAGE REFERENCE

    Connector Terminal Condition Voltage (V) (Approx.)
    (+) (-)
    M19 46 Ground Door lock/unlock switch is neutral. Battery voltage
    Door lock/unlock switch is turned to UNLOCK. 0
    45 Ground Door lock/unlock switch is neutral. Battery voltage
    Door lock/unlock switch is turned to LOCK. 0

    OK or NG 

    • OK: Door lock/unlock switch circuit is OK.
    • NG: GO TO 2.
      Fig 2: Checking Voltage Between BCM Connector M19 Terminals 45, 46 And Ground
      G03609371Courtesy of NISSAN MOTOR CO., U.S.A.
  2. CHECK DOOR LOCK/UNLOCK SWITCH 
    1. Turn ignition switch OFF.
    2. Disconnect door lock/unlock switch.
    3. Check continuity between main power window and door lock/unlock switch terminals 10, 11 and 14.
      MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH TERMINALS CONTINUITY REFERENCE

      Terminal Condition Continuity
      10 14 Lock Yes
      Unlock/Neutral No
      11 Unlock Yes
      Lock/Neutral No
    4. Check continuity between power window and door lock/unlock switch RH terminals 1, 2 and 3.
      POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH TERMINALS CONTINUITY REFERENCE

      Terminal Condition Continuity
      1 3 Lock Yes
      Unlock/Neutral No
      2 Unlock Yes
      Lock/Neutral No

    OK or NG 

    • OK: GO TO 3.
    • NG: Replace door lock/unlock switch.
      Fig 3: Checking Continuity Between Main Power Window And Door Lock/Unlock Switch Terminals 10, 11 And 14
      G03609372Courtesy of NISSAN MOTOR CO., U.S.A.
  3. CHECK DOOR LOCK/UNLOCK SWITCH GROUND HARNESS 
    1. Disconnect main power window and door lock/unlock switch or power window and door lock/unlock switch RH.
    2. Check continuity between main power window and door lock/unlock switch connector D7 terminal 14 and ground.

      14 - Ground: Continuity should exist. 

      Fig 4: Checking Continuity Between Main Power Window And Door Lock/Unlock Switch Connector D7 Terminal 14 And Ground
      G03609373Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Check continuity between power window and door lock/unlock switch RH connector D105 terminal 3 and ground

      3 - Ground: Continuity should exist. 

    OK or NG 

    • OK: GO TO 4.
    • NG: Repair or replace harness.
      Fig 5: Checking Continuity Between Power Window And Door Lock/Unlock Switch Rh Connector D105 Terminal 3 And Ground
      G03609374Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK DOOR LOCK SWITCH CIRCUIT 
    1. Disconnect BCM.
    2. Check continuity between BCM connector M19 terminal 45 and main power window and door lock/unlock switch connector D7 terminal 10 or power window and door lock/unlock switch RH connector D105 terminal 1.

      1 - 45: Continuity should exist. 

      10 - 45: Continuity should exist. 

    3. Check continuity between BCM connector M19 terminal 45 and ground.

      45 - Ground: Continuity should not exist. 

      Fig 6: Checking Continuity Between BCM Connector Terminal And Main Power Window And Door Lock/Unlock Switch Connector Terminal
      G03609375Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Check continuity between BCM connector M19 terminal 46 and main power window and door lock/unlock switch LH connector D7 terminal 11 or power window and door lock/unlock switch RH connector D105 terminal 2.

      2 - 46: Continuity should exist. 

      11 - 46: Continuity should exist. 

    5. Check continuity between BCM connector M19 terminal 46 and ground.

      46 - Ground: Continuity should not exist. 

    OK or NG 

    • OK: GO TO 5.
    • NG: Repair or replace harness.
      Fig 7: Checking Continuity Between BCM Connector Terminal And Main Power Window And Door Lock/Unlock Switch LH Connector Terminal
      G03609376Courtesy of NISSAN MOTOR CO., U.S.A.
  5. CHECK BCM OUTPUT VOLTAGE 
    1. Connect BCM.
    2. Check voltage between BCM connector M19 terminals 45, 46 and ground.

      45 - Ground: Battery voltage 

      46 - Ground: Battery voltage 

    OK or NG 

    • OK: Check condition of the harness and connector.
    • NG: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".
      Fig 8: Checking Voltage Between BCM Connector M19 Terminals 45, 46 And Ground
      G03609377Courtesy of NISSAN MOTOR CO., U.S.A.
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