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Encoder Circuit Check

  1. CHECK ENCODER SIGNAL
    1. Turn ignition switch ON.
    2. Check the signal between rear power window control unit LH connector D209 terminal 4 and ground with oscilloscope.
      SIGNAL REFERENCE

      Connector Terminals Condition Signal
      (+) (-)
      D209 4 Ground Opening
      G04877356Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 1: Identifying Signal Between Rear Power Window Control Unit LH Connector D209 Terminal 4 And Ground
      G05231119Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO 2

    NG: Replace rear power window control unit LH.

  2. CHECK HARNESS CONTINUITY
    1. Turn ignition switch OFF.
    2. Disconnect rear power window control unit LH and rear power window motor LH.
    3. Check continuity between rear power window control unit LH or RH connector D209 terminal 4 and rear power window motor LH connector D204 terminal 3.

      4 - 3 : Continuity should exist. 

    OK or NG 

    OK: GO TO 3

    NG: Repair or replace harness.

    Fig 2: Identifying Continuity Between Rear Power Window Control Unit And Rear Power Window Motor LH Connector
    G05231120Courtesy of NISSAN MOTOR CO., U.S.A.
  3. CHECK REAR POWER WINDOW MOTOR LH POWER SUPPLY
    1. Turn ignition switch OFF.
    2. Disconnect rear power window motor LH or RH.
    3. Turn ignition switch ON.
    4. Check voltage between rear power window motor LH connector D204 terminal 4 and ground.

      4 - Ground : Approx. 10V 

    OK or NG 

    OK: GO TO  5

    NG: GO TO 4

    Fig 3: Identifying Voltage Between Rear Power Window Motor LH Connector D204 Terminal 4 And Ground
    G04917129Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK HARNESS CONTINUITY
    1. Turn ignition switch OFF.
    2. Disconnect rear power window motor LH and rear power window control unit LH.
    3. Check continuity between rear power window motor LH connector D204 (B) terminal 4 and rear power window control unit LH connector D209 (A) terminal 5.

      4 - 5 : Continuity should exist. 

    OK or NG 

    OK: Replace rear power window switch LH. Refer to "REMOVAL AND INSTALLATION ".

    NG: Repair or replace harness.

    Fig 4: Identifying Continuity Between Rear Power Window Motor LH Connector And Rear Power Window Control Unit LH Connector
    G05231115Courtesy of NISSAN MOTOR CO., U.S.A.
  5. CHECK ENCODER GROUND
    1. Disconnect rear power window motor LH.
    2. Check continuity between rear power window motor LH connector D204 terminal 6 and ground.

      6 - Ground : Continuity should exist. 

    OK or NG 

    OK: GO TO  7

    NG: GO TO 6

    Fig 5: Identifying Continuity Between Rear Power Window Motor LH Connector D204 Terminal 6 And Ground
    G04917131Courtesy of NISSAN MOTOR CO., U.S.A.
  6. CHECK ENCODER GROUND CIRCUIT
    1. Disconnect rear power window control unit LH.
    2. Check continuity between rear power window motor LH connector D204 terminal 6 and rear power window control unit LH connector D209 terminal 3.

      6 - 3 : Continuity should exist. 

    OK or NG 

    OK: Replace rear power window control unit LH.

    NG: Repair or replace harness.

    Fig 6: Identifying Continuity Between Rear Power Window Motor LH Connector And Rear Power Window Control Unit LH Connector
    G05231111Courtesy of NISSAN MOTOR CO., U.S.A.
  7. CHECK REAR POWER WINDOW MOTOR LH LIMIT SWITCH SIGNAL
    1. Turn ignition switch ON.
    2. Check voltage between rear power window control unit LH connector and ground.
      VOLTAGE SPECIFICATION

      Connector Terminals Condition Voltage (V) (Approx.)
      (+) (-)
      D209 3 Ground Rear power window LH is between fully-open and just before fully-closed position (ON) 0
      Rear power window LH is between just before fully-closed position and fully-closed position (OFF) 5
      Fig 7: Identifying Voltage Between Rear Power Window Control Unit LH Connector And Ground
      G05231109Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Limit switch circuit is OK.

    NG: GO TO 8

  8. CHECK REAR POWER WINDOW SWITCH LH OUTPUT SIGNAL
    1. Turn ignition switch ON.
    2. Check voltage between rear power window control unit LH harness connector D209 terminal 2 and ground.

      2 - Ground : Approx. 5V 

    OK or NG 

    OK: GO TO 9

    NG: Replace rear power window control unit LH.

    Fig 8: Identifying Voltage Between Rear Power Window Control Unit LH Harness Connector D209 Terminal 2 And Ground
    G05231112Courtesy of NISSAN MOTOR CO., U.S.A.
  9. CHECK HARNESS CONTINUITY
    1. Turn ignition switch OFF.
    2. Disconnect rear power window control unit LH.
    3. Check continuity between rear power window control unit LH connector D209 terminal 2 and rear power window motor LH connector D204 terminal 5.

      2 - 5 : Continuity should exist. 

    OK or NG 

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

    NG: Repair or replace harness.

    Fig 9: Identifying Continuity Between Rear Power Window Control Unit LH Connector And Rear Power Window Motor LH Connector
    G05231113Courtesy of NISSAN MOTOR CO., U.S.A.
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