Power Window Serial Link Check

1. CHECK POWER WINDOW SWITCH OUTPUT SIGNAL 

   With CONSULT-II 

   Check door lock and unlock switch ("LOCK SW DR/AS", "UNLK SW DR/AS") in DATA MONITOR mode for "POWER DOOR LOCK SYSTEM" with CONSULT-II. Refer to CONSULT-II FUNCTION (BCM)

   • 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: "LOCK SW DR/AS", "UNLK SW DR/AS" Display

     Courtesy of NISSAN MOTOR CO., U.S.A.

   Without CONSULT-II 

   1. Remove key from ignition switch, and the door of driver side and passenger side is closed.
   2. Check the signal between BCM connector and ground with oscilloscope when door lock and unlock switch (driver side and passenger side) 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 (driver side and passenger side) is turned "LOCK" or "UNLOCK".
      Fig 2: BCM Connector And Ground Signal Chart

      Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 3: Checking Signal Between BCM Connector And Ground With Oscilloscope

      Courtesy of NISSAN MOTOR CO., U.S.A.

   OK or NG 

   1. OK: GO TO 2.
   2. NG: GO TO  3
2. CHECK BCM OUTPUT SIGNAL 

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

   When "ACTIVE TEST" is executed, is the window of driver side and passenger side lowered.

   OK or NG 

   1. OK: Further inspection is necessary. Refer to symptom chart.
   2. NG: Replace BCM.
   Fig 4: "POWER WINDOW DOWN" In Active Test Display

   Courtesy of NISSAN MOTOR CO., U.S.A.
3. CHECK POWER WINDOW SWITCH GROUND 
   1. Turn ignition switch OFF.
   2. Disconnect power window main switch and power window sub-switch connector.
   3. Check continuity between power window main switch connector D7 terminals 15 and ground.

      15 (B) - Ground: Continuity should exist. 

      Fig 5: Checking Continuity Between Power Window Main Switch Connector D7 Terminals 15 And Ground

      Courtesy of NISSAN MOTOR CO., U.S.A.
   4. Check continuity between power window sub-switch connector D43 terminal 11 and ground.

      11 (B) -Ground: Continuity should exist. 

   OK or NG 

   1. OK: GO TO 4.
   2. NG: Repair or replace harness.
   Fig 6: Checking Continuity Between Power Window Sub-Switch Connector D43 Terminal 11 And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.
4. CHECK POWER WINDOW SERIAL LINK CIRCUIT 
   1. Disconnect BCM connector.
   2. Check continuity between BCM connector M1 terminal 22 and power window main switch connector D7 terminal 12.

      22 (Y) - 12 (BR): Continuity should exist. 

      Fig 7: Checking Continuity Between BCM Connector M1 Terminal 22 And Power Window Main Switch Connector D7 Terminal 12

      Courtesy of NISSAN MOTOR CO., U.S.A.
5. Check continuity between BCM connector M1 terminal 22 and power window sub- switch connector D43 terminal 16.

   22 (Y) -16 (Y): Continuity should exist. 

OK or NG 

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

Fig 8: Checking Continuity Between BCM Connector M1 Terminal 22 And Power Window Sub- Switch Connector D43 Terminal 16

Courtesy of NISSAN MOTOR CO., U.S.A.