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Encoder Circuit Check (Driver Side)

WARNING: This page is about a different car, the 2005 Nissan 350Z. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DRIVER SIDE POWER WINDOW MOTOR POWER SUPPLY 
    1. Turn ignition switch ON.
    2. Check voltage between driver side power window motor connector D9 terminal 4 and ground.
      • 4 (W) - Ground: Approx. 10V 

    OK or NG 

    • OK: GO TO  3.
    • NG: GO TO 2.
    Fig 1: Driver Side Power Window Motor Connector D9 Terminal 4 & Ground Voltage Test
    G02404645Courtesy of NISSAN MOTOR CO., U.S.A.
  2. CHECK HARNESS CONTINUITY 
    1. Turn ignition switch OFF.
    2. Disconnect power window main switch and driver side power window motor connector.
    3. Check continuity between power window main switch connector D7 terminal 5 and driver side power window motor connector D9 terminal 4.
      • 5 (W) - 4 (W): Continuity should exist. 

    OK or NG 

    • OK: Replace power window main switch.
    • NG: Repair or replace harness.
    Fig 2: Power Window Main Switch Connector D7 Terminal 5 & Driver Side Power Window Motor Connector D9 Terminal 4 Continuity Test
    G02404646Courtesy of NISSAN MOTOR CO., U.S.A.
  3. CHECK ENCODER GROUND 
    1. Turn ignition switch OFF.
    2. Disconnect driver side power window motor connector.
    3. Check continuity between driver side power window motor connector D9 terminal 6 and ground.
      • 6 (LG) - Ground: Continuity should exist. 

    OK or NG 

    • OK: GO TO  5.
    • NG: GO TO 4.
    Fig 3: Driver Side Power Window Motor Connector D9 Terminal 6 & Ground Continuity Test
    G02404647Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK ENCODER GROUND CIRCUIT 
    1. Disconnect power window main switch connector.
    2. Check continuity between power window main switch connector D7 terminal 14 and driver side power window motor connector D9 terminal 6.
      • 14 (LG) - 6 (LG): Continuity should exist. 

    OK or NG 

    • OK: Replace power window main switch.
    • NG: Repair or replace harness.
    Fig 4: Power Window Main Switch Connector D7 Terminal 14 & Driver Side Power Window Motor Connector D9 Terminal 6 Continuity Test
    G02404648Courtesy of NISSAN MOTOR CO., U.S.A.
  5. CHECK ENCODER SIGNAL 
    1. Connect driver side power window motor connector.
    2. Turn ignition switch ON.
    3. Check signal between power window main switch connector and ground with oscilloscope.
      Fig 5: Reference Valve Graph
      G02404649Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 6: Power Window Main Switch Connector & Ground Signal Test
      G02404650Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    • OK: Replace power window main switch.
    • NG: GO TO 6.
  6. CHECK ENCODER CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect power window main switch and driver side power window motor connector.
    3. Check continuity between power window main switch connector D7 terminal 13 and driver side power window motor connector D9 terminal 3.
      • 13 (GY) - 3 (GY): Continuity should exist. 

    OK or NG 

    • OK: Replace driver side power window motor.
    • NG: Repair or replace harness.
    Fig 7: Power Window Main Switch Connector D7 Terminal 13 & Driver Side Power Window Motor Connector D9 Terminal 3 Continuity Test
    G02404651Courtesy of NISSAN MOTOR CO., U.S.A.
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