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Power Window Serial Link Check

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK BUS OUTPUT SIGNAL 

    With CONSULT-II 

    Check door lock and unlock switch ("LOCK SW DR/AS", "UNLK SW DR/AS") in DATA MONITOR mode for "MULTI REMOTE ENT" with CONSULT-II. Refer to "DATA MONITOR ".

    • When door lock and unlock switch is turned to LOCK

      LOCK SW DR/AS : ON 

    • When door lock and unlock switch is turned to UNLOCK

      UNLK SW DR/AS : ON 

      Fig 1: Identifying CONSULT II Display - DATA MONITOR
      G04902783

    Without CONSULT-II 

    1. Remove key from ignition switch, and the front door LH and RH is closed.
    2. Check the signal between BCM connector and ground with oscilloscope when door lock and unlock switch (front LH and front RH) 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 (front LH and front RH) is turned "LOCK" or "UNLOCK".
      CONNECTOR TERMINAL SIGNAL CHART

      Connector Terminals Signal
      (+) (-)
      M18 22 Ground
      G04903931
      Fig 2: Checking Signal Between BCM Connector And Ground
      G04902785

    OK or NG 

    OK: GO TO 2.

    NG: GO TO  3.

  2. CHECK BCM BUS OUTPUT SIGNAL 

    Check power window serial link ("POWER WINDOW DOWN") in "ACTIVE TEST" mode with CONSULT-II. Refer to "ACTIVE TEST ".

    Fig 3: Identifying CONSULT II Display - ACTIVE TEST
    G04902786

    When "ACTIVE TEST" is executed, is the front window LH and RH lowered.

    OK or NG 

    OK: Further inspection is necessary. Refer to "TROUBLE DIAGNOSES SYMPTOM CHART ".

    NG: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".

  3. CHECK POWER WINDOW SWITCH GROUND 
    1. Turn ignition switch OFF.
    2. Disconnect main power window and door lock/unlock switch and power window and door lock/unlock switch RH.
    3. Check continuity between main power window and door lock/ unlock switch connector D8 terminal 17 and ground.

      17 - Ground : Continuity should exist. 

      Fig 4: Checking Continuity Between Connector D8 Terminal 17 And Ground
      G04902738
    4. Check continuity between power window and door lock/unlock switch RH connector D105 terminal 11 and ground.

      11 - Ground : Continuity should exist. 

      Fig 5: Checking Continuity Between Door Lock/Unlock Switch Connector Terminal 11 And Ground
      G04902788

    OK or NG 

    OK: GO TO 4.

    NG: Repair or replace harness.

  4. CHECK POWER WINDOW SERIAL LINK CIRCUIT 
    1. Disconnect BCM.
    2. Check continuity between BCM connector M18 terminal 22 and main power window and door lock/unlock switch connector D7 terminal 14.

      22 - 14 : Continuity should exist. 

      Fig 6: Checking Continuity Between BCM Connector M18 Terminal 22 And Door Lock/Unlock Switch Connector D7 Terminal 14
      G04902789
    3. Check continuity between BCM connector M18 terminal 22 and power window and door lock/unlock switch RH connector D105 terminal 16.

      22 - 16 : Continuity should exist. 

      Fig 7: Checking Continuity Between BCM Connector M18 Terminal 22 And Door Lock/Unlock Switch Connector D105 Terminal 16
      G04902790

    OK or NG 

    OK: Replace main power window and door lock/unlock switch or power window and door lock/unlock switch RH. Refer to "FRONT DOOR ".

    NG: Repair or replace harness.

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