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Home >> Nissan-Datsun >> 2003 >> Sentra SE-R, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1434 (Body, Lock & Security System) >> Back Door Auto Closure System >> Open Switch Check
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Open Switch Check

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 OPEN SWITCH SIGNAL 
    1. Turn ignition switch OFF.
    2. Check the signal between back door closure control unit connector and ground with oscilloscope.
      Fig 1: Connector Terminal Reference Chart
      G02363734Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK : Open switch is OK.
    2. NG : GO TO 2.
    Fig 2: Checking Signal Between Back Door Closure Control Unit Connector And Ground With Oscilloscope
    G02363735Courtesy of NISSAN MOTOR CO., U.S.A.
  2. CHECK HARNESS CONTINUITY 
    1. Disconnect back door closure control unit and back door closure motor connector.
    2. Check continuity between back door closure control unit connector D106 terminal 9 and back door closure motor connector D109 terminal 4.
      1. 9 (P) - 4 (P) : Continuity should exist. 
    3. Check continuity between back door closure control unit connector D106 terminal 9 and ground.
      1. 9 (P) - Ground : Continuity should not exist. 

    OK or NG 

    1. OK : GO TO 3.
    2. NG : Repair or replace harness.
    Fig 3: Checking Continuity Between Back Door Closure Control Unit Connector D106 Terminal 9 And Ground
    G02363736Courtesy of NISSAN MOTOR CO., U.S.A.
  3. CHECK GROUND CIRCUIT 

    Check continuity between back door closure motor connector D109 terminal 8 and ground.

    1. 8 (B) - Ground : Continuity should exist. 

    OK or NG 

    1. OK : GO TO 4. 
    2. NG : Repair or replace harness. 
    Fig 4: Checking Continuity Between Back Door Closure Motor Connector D109 Terminal 8 And Ground
    G02363737Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK BACK DOOR CLOSURE CONTROL UNIT OUTPUT SIGNAL 
    1. Connect back door closure control unit connector.
    2. Check voltage between back door closure control unit connector D106 terminal 9 and ground.
      1. Back door is closed 
      2. 9 (P) - Ground : Battery voltage 

    OK or NG 

    1. OK : Replace back door lock assembly. 
    2. NG : Replace back door closure control unit. 
    Fig 5: Checking Voltage Between Back Door Closure Control Unit Connector D106 Terminal 9 And Ground
    G02363738Courtesy of NISSAN MOTOR CO., U.S.A.
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