LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 2097 (Glass, Window System & Mirrors) >> Power Window System >> Encoder Circuit Check Front LH (Without Rear Power Vent Windows)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Encoder Circuit Check Front LH (Without Rear Power Vent Windows)

WARNING: This page is about a different car, the 2008 Nissan Quest. 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 4 and ground.

      4 - 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 4 And Ground
    G04907458Courtesy 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 REFERENCE CHART

      Connector Terminal Connector Terminal Continuity
      A B
      Main power window and door lock/unlock switch: D7 5 Front power window motor LH: D9 4 Yes
    4. Check continuity between front power window motor LH connector and ground.
      TERMINAL CONTINUITY REFERENCE CHART

      Connector Terminal Ground Continuity
      B
      Front power window motor LH: D9 4 No
      Fig 2: Checking Continuity Between Power Window And Door Lock/Unlock Switch D7 Connector Terminal 5 And Front Power Window Motor LH Connector Terminal 4, And Between Connector D9 Terminal 4 And Ground
      G04907459Courtesy 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. Disconnect front power window motor LH.
    3. Check continuity between front power window motor LH connector D9 terminal 6 and ground.

      6 - Ground : Continuity should exist. 

    OK or NG 

    OK: GO TO  5.

    NG: GO TO 4.

    Fig 3: Checking Continuity Between Front Power Window Motor LH Connector D9 Terminal 6 And Ground
    G04902751Courtesy of NISSAN MOTOR CO., U.S.A.
  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 14.

      6 - 14 : Continuity should exist. 

    OK or NG 

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

    NG: Repair or replace harness.

    Fig 4: Checking Continuity Between Front Motor Terminal 6 And Main Power Window Switch Terminal 14
    G04907461Courtesy of NISSAN MOTOR CO., U.S.A.
  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.
      CONNECTOR TERMINALS SIGNAL REFERENCE

      Connector Terminals Condition Signal
      (+) (-)
      D7 13 Ground Opening
      G04877356Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 5: Checking Signal Between Main Power Window And Door Lock/Unlock Switch Connector Terminal 13 And Ground
      G04902764Courtesy 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 REFERENCE CHART

      Connector Terminal Connector Terminal Continuity
      A B
      Main power window and door lock/unlock switch: D7 13 Front power window motor LH: D9 3 Yes
    4. Check continuity between front power window motor LH connector and ground.
      TERMINAL CONTINUITY REFERENCE CHART

      Connector Terminal Ground Continuity
      B
      Front power window motor LH: D9 3 No
      Fig 6: Checking Continuity Between Front Motor Terminal 3 And Main Power Window Switch Terminal 13
      G04907464Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Replace front power window motor LH. Refer to "REMOVAL AND INSTALLATION ".

    NG: Repair or replace harness.

scientia non olet · About LEMON Manuals