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Home >> Nissan-Datsun >> 2003 >> Sentra SE-R, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1708 (Glass, Window System & Mirrors) >> Power Window System >> Encoder Circuit Check Front LH
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Encoder Circuit Check Front LH

WARNING: This page is about a different car, the 2006 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FRONT POWER WINDOW MOTOR LH POWER SUPPLY 
    1. Turn ignition switch OFF.
    2. Disconnect front power window motor LH.
    3. Turn ignition switch ON.
    4. Check voltage between front power window motor LH connector D9 terminal 2 and ground.

      2 - Ground: Approx. 10V 

    OK or NG 

    OK: GO TO  3.

    NG: GO TO 2.

    Fig 1: Checking Voltage Between Front Power Window Motor LH Connector D9 Terminal 2 And Ground
    G04176024Courtesy of NISSAN MOTOR CO., U.S.A.
  2. CHECK HARNESS CONTINUITY 
    1. Turn ignition switch OFF.
    2. Disconnect main power window and door lock/unlock switch.
    3. Check continuity between front power window motor LH connector and main power window and door lock/unlock switch connector.
      TERMINAL CONTINUITY

      Connector Terminal Connector Terminal Continuity
      A B
      Main power window and door lock/unlock switch: D7 15 Front power window motor LH: D9 2 Yes
    4. Check continuity between front power window motor LH connector and ground.
    TERMINAL CONTINUITY

    Connector Terminal Ground Continuity
    B
    Front power window motor LH: D9 2 No
    Fig 2: Checking Continuity Between Front Power Window Motor LH Connector And Ground
    G04176025Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

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

    NG: Repair or replace harness.

  3. CHECK ENCODER GROUND 
    1. Turn ignition switch OFF.
    2. Check continuity between front power window motor LH connector D9 terminal 6 and ground.

      6 - Ground: Continuity should exist. 

    Fig 3: Checking Resistance Between Terminal 6 And Ground
    G04135295Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO  5.

    NG: GO TO 4.

  4. CHECK ENCODER GROUND CIRCUIT 
    1. Disconnect main power window and door lock/unlock switch.
    2. Check continuity between front power window motor LH connector D9 terminal 6 and main power window and door lock/unlock switch connector D7 terminal 2.

      6 - 2: Continuity should exist. 

    Fig 4: Checking Continuity Between Front Power Window Motor LH Connector D9 Terminal 6 And Main Power Window And Door Lock/Unlock Switch Connector D7 Terminal 2
    G04176027Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

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

    NG: Repair or replace harness.

  5. CHECK ENCODER SIGNAL 
    1. Connect front power window motor LH.
    2. Turn ignition switch ON.
    3. Check the signal between main power window and door lock/unlock switch connector and ground with oscilloscope.
    TERMINAL OSCILLOSCOPE SIGNAL SPECIFICATION

    Connector Terminals Condition Signal
    (+) (-)
    D7 13 Ground Opening
    G04077331
    Fig 5: Checking Signal Between Main Power Window And Door Lock/Unlock Switch Connector And Ground With Oscilloscope
    G04176029Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

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

    NG: GO TO 6.

  6. CHECK ENCODER CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect front power window motor LH and main power window and door lock/unlock switch.
    3. Check continuity between front power window motor LH connector and main power window and door lock/unlock switch connector.
      TERMINAL CONTINUITY

      Connector Terminal Connector Terminal Continuity
      A B
      Main power window and door lock/unlock switch: D7 13 Front power window motor LH: D9 4 Yes
    4. Check continuity between front power window motor LH connector and ground.
    TERMINAL CONTINUITY

    Connector Terminal Ground Continuity
    B
    Front power window motor LH: D9 4 No
    Fig 6: Checking Continuity Between Front Power Window Motor LH Connector And Ground
    G04176030Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Replace front power window motor LH. Refer to , "FRONT DOOR GLASS REGULATOR "

    NG: Repair or replace harness.

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