2004 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE

Encoder Circuit Check Front LH / With Rear Power Vent Windows

WARNING: This page is about a different car, the 2004 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 ON.
    2. Check voltage between front power window motor LH connector D9 terminal 6 and ground.
    1. 6 (G/R) - Ground: Approx. 10V 

    OK or NG

    1. OK: GO TO  3 .
    2. NG: GO TO 2.
    Fig 1: Checking Voltage Between Front Power Window Motor LH Connector D9 Terminal 6 And Ground
    G03500142Courtesy of NISSAN MOTOR CO., U.S.A.
  2. CHECK HARNESS CONTINUITY 
    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 D9 terminal 6 and main power window and door lock/unlock switch connector D7 terminal 15.
    1. 6 (G/R) -15 (G/R): Continuity should exist. 

    OK or NG

    1. OK: Replace main power window and door lock/unlock switch.
    2. NG: Repair or replace harness.
    Fig 2: Checking Continuity Between Front Power Window Motor LH Connector Terminal And Main Power Window And Door Lock/Unlock Switch Connector Terminal
    G03500143Courtesy of NISSAN MOTOR CO., U.S.A.
  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 4 and ground.
    1. 4 (W/B) - Ground: Continuity should exist. 

    OK or NG

    1. OK: GO TO  5 .
    2. NG: GO TO 4.
    Fig 3: Checking Continuity Between Front Power Window Motor LH Connector D9 Terminal 4 And Ground
    G03500144Courtesy 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 4 and main power window and door lock/unlock switch connector D7 terminal 2.
    1. 4 (W/B) - 2 (W/B): Continuity should exist. 

    OK or NG

    1. OK: Replace main power window and door lock/unlock switch.
    2. NG: Repair or replace harness.
    Fig 4: Checking Continuity Between Front Power Window Motor LH Connector Terminal And Main Power Window And Door Lock/Unlock Switch Connector Terminal
    G03500145Courtesy 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.
    Fig 5: Identifying Main Power Window And Door Lock/Unlock Switch Connectors Signal Waveform Graph
    G03500146Courtesy of NISSAN MOTOR CO., U.S.A.
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