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Encoder And Limit Switch Check

  1. CHECK DOOR WINDOW SLIDE MECHANISM 

    Check the following.

    • Obstacles in window, glass molding, etc.
    • Worn or deformed glass molding
    • Door sash tilted too far inward or outward
    • Door window motor

    OK or NG 

    1. OK: GO TO 2.
    2. NG: Remove obstacles or repair door window slide mechanism.
  2. CHECK POWER SUPPLY TO LIMIT SWITCH 
    1. Disconnect front power window motor LH or RH harness connector.
    2. Check voltage between power window main switch harness connector D6 terminal 9 (G/W) or front power window switch RH harness connector D44 terminal 15 (G/W) and ground.
      Fig 1: Checking Power Supply To Limit Switch
      G00939128Courtesy of NISSAN MOTOR CO., U.S.A.

      Voltage: 5V 

      NOTE: Check voltage when front power window motor LH or RH harness connector is disconnected.

    OK or NG 

    1. OK: GO TO 3.
    2. NG: Replace power window main switch or front power window switch RH.
  3. CHECK LIMIT SWITCH OPERATION 
    1. Connect front power window motor LH or RH harness connector.
    2. Check voltage between power window main switch harness connector D6 terminal 9 (G/W) or front power window switch RH harness connector D44 terminal 15 (G/W) and ground during power window closing operation.
      Fig 2: Checking Limit Switch Operation
      G00939129Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO  5 .
    2. NG: GO TO 4.
  4. RESET LIMIT SWITCH 

    Reset limit switch. Refer to "FRONT DOOR LIMIT SWITCH RESET ". Then check voltage between power window main switch harness connector D6 terminal 9 (G/W) or front power window switch RH harness connector D44 terminal 15 (G/W) and ground during power window closing operation at least ten times.

    Fig 3: Reseting Limit Switch
    G00939130Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO 5.
    2. NG: Replace front power window motor.
  5. CHECK ENCODER

    Measure voltage between power window main switch harness connector D6 terminal 13 (G/Y) or front power window switch RH harness connector D44 terminal 12 (G/Y) and ground with oscilloscope when power window is in automatic closing operation.

    Fig 4: Measuring Voltage Between Power Window Harness Connectors & Ground
    G00939131Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: Replace power window main switch.
    2. NG: Replace front power window motor.
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