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Check Door Lock and Unlock Switch

WARNING: This page is about a different car, the 2005 Infiniti FX45 and 2005 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DOOR LOCK AND UNLOCK SWITCH INPUT SIGNAL 

    With CONSULT-II 

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

    • When door lock and unlock switch is turned to LOCK:
      1. CDL LOCK SW: ON 
    • When door lock and unlock switch is turned to UNLOCK:
      1. CDL UNLOCK SW: ON 
    Fig 1: DATA MONITOR - CONSULT II Display
    G02362167Courtesy of NISSAN MOTOR CO., U.S.A.

    Without CONSULT-II 

    1. Remove key from ignition key cylinder.
    2. Check the signal between BCM connector M3 terminal 22 and ground with oscilloscope when door lock and unlock switch is turned "LOCK" or "UNLOCK".
    3. Make sure signals which are shown in the figure below can be detected during 10 second just after door lock and unlock switch is turned "LOCK" or "UNLOCK".
    Fig 2: Oscilloscope Graph
    G02362168Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 3: Checking Signal Between BCM Connector M3 Terminal 22 And Ground
    G02362169Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK : Door lock and unlock switch circuit is OK.
    2. NG : GO TO 2.
  2. CHECK POWER WINDOW SERIAL LINK CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect BCM, power window main switch and front power window switch connectors.
    3. Check continuity between BCM connector M3 terminal 22 and power window main switch (door lock and unlock switch) connector D6 terminal 14.
      1. 22 (OR) - 14 (Y) : Continuity should exist.
      Fig 4: Checking Continuity Between BCM Connector M3 Terminal 22 And Power Window Main Switch Connector D6 Terminal 14
      G02362170Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Check continuity between power window main switch (door lock and unlock switch) connector D6 terminal 14 and ground.
      1. 14 (Y) - Ground : Continuity should not exist.
    5. Check continuity between BCM connector M3 terminal 22 and front power window switch (door lock and unlock switch) connector D36 terminal 16.
      1. 22 (OR) - 16 (Y) : Continuity should exist.
    6. Check continuity between front power window switch (door lock and unlock switch) connector D36 terminal 16 and ground.
      1. 16 (Y) - Ground : Continuity should not exist.
    Fig 5: Checking Continuity Between Front Power Window Switch Connector D36 Terminal 16 And Ground
    G02362171Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK : GO TO 3.
    2. NG : Repair or replace harness.
  3. CHECK DOOR LOCK AND UNLOCK SWITCH GROUND HARNESS 
    • Check continuity between power window main switch (door lock and unlock switch) connector D7 terminal 17 and ground.
      1. 17 (B) - Ground : Continuity should exist.
      Fig 6: Checking Continuity Between Power Window Main Switch Connector D7 Terminal 17 And Ground
      G02362172Courtesy of NISSAN MOTOR CO., U.S.A.
    • Check continuity between power window sub-switch (front passenger side) (door lock and unlock switch) connector D36 terminal 11 and ground.
      1. 11 (B) - Ground : Continuity should exist.
    Fig 7: Checking Continuity Between Power Window Sub-Switch Connector D36 Terminal 11 And Ground
    G02362173Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK : Replace power window main switch or power window sub-switch.
    2. NG : Repair or replace harness.
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