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Encoder & Limit Switch Check

  1. Inspect suspect window slide mechanism. Ensure that slide is free from debris or damage. Check for worn molding. Ensure window is not binding in molding. Repair as needed. If window is able to slide freely, go to next step.
  2. Disconnect suspect window regulator connector. Access power window switch harness connector. Do not disconnect connector. Turn ignition on. Backprobing connector, measure voltage in Green/White wire, between ground and terminal No. 15 (driver's side) or No. 16 (passenger's side). See Fig 1 . If 5 volts is present, go to next step. If 5 volts is not present, replace power window switch.
  3. Reconnect suspect window regulator connector. Ensure window is fully open. Access power window switch harness connector. Do not disconnect connector. Turn ignition on. Backprobing connector, measure voltage between ground and terminal No. 15 (driver's side) or No. 16 (passenger's side). See Fig 1 . Raise window while monitoring voltmeter. Voltage should remain at zero volts until window is within .59" (15 mm) of being closed. Once window opening is less than .59" (15 mm), voltage should be 5 volts. If voltage is as specified, go to step  5 . If voltage is not as specified, go to next step.
  4. Reset suspect window limit switch. Fully close window. Press and hold reset switch on window regulator. See Fig 2 . Fully lower window. Release reset switch. Fully close window. Repeat step  3 at least 10 times. If voltage is as specified, go to next step. If voltage is not as specified, replace window regulator motor.
  5. Turn ignition on. Using oscilloscope, backprobe suspect window switch connector and measure voltage between ground and terminal No. 14 (driver's side) or No. 19 (passenger's side). See Fig 3 . Raise window using automatic function. Square wave pattern should oscillate between 0-5 volts. If oscilloscope pattern is as specified, replace power window switch. If oscilloscope pattern is not as specified, replace window regulator motor.
Fig 1: Checking Voltage To Power Window Limit Switch
G00012500Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 2: Identifying Power Window Regulator Reset Switch Location
G00012502Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 3: Checking Encoder Signal
G00012501Courtesy of NISSAN MOTOR CO., U.S.A.
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