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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
      1. OK or NG

        OK: GO TO  2 .

        NG: Remove obstacles or repair door window slide mechanism.

  2. Check limit switch power supply input signal.
    1. Disconnect front power window motor LH or RH connector.
    2. Turn ignition switch to ON position.
    3. Check voltage between front power window motor LH harness connector D4 terminal 2 (G/W) or front power window motor RH harness connector D38 terminal 2 (G/W) and ground.
      Fig 1: Checking Voltage Between D4 Or D38 Terminal 2 & Ground
      G00884552Courtesy of NISSAN MOTOR CO., U.S.A.
      1. OK or NG

        OK: GO TO  4 .

        NG: GO TO  3 .

  3. Check limit switch power supply output signal.

    Check voltage between front power window main switch terminal 15 or front power window switch RH terminal 16 and ground.

    Fig 2: Checking Voltage Between Terminal 15 Or Terminal 16 & Ground
    G00884553Courtesy of NISSAN MOTOR CO., U.S.A.
    1. OK or NG

      OK: Repair harness or connectors between power window switch and front power window motor.

      NG: Replace power window main switch or front power window switch RH.

  4. Check limit switch operation.
    1. Connect front power window motor LH or RH connector.
    2. Check voltage between front power window main switch terminal 15 or front power window switch RH terminal 16 and ground during power window closing operation.
      Fig 3: Checking Voltage Between Terminal 15 Or Terminal 16 & Ground
      G00884554Courtesy of NISSAN MOTOR CO., U.S.A.
      1. OK or NG

        OK: GO TO  7 .

        NG: GO TO  5 .

  5. Reset limit switch.

    Reset limit switch. Refer to FRONT DOOR LIMIT SWITCH RESET . Then check voltage between front power window main switch terminal 15 or front power window switch RH terminal 16 and ground during power window closing operation at least ten times.

    Fig 4: Checking Voltage Between Terminal 15 Or Terminal 16 & Ground (Reset Limit Switch)
    G00884555Courtesy of NISSAN MOTOR CO., U.S.A.
    1. OK or NG

      OK: INSPECTION END

      NG: GO TO  6 .

  6. Check power window motor ground circuit.
    1. Disconnect front power window main switch connector or front power window switch RH connector.
    2. Check the following:
      • Continuity between front power window main switch harness connector D13 terminal 17 (W/B) and front power window motor LH harness connector D4 terminal 6 (W/B).
      • Continuity between front power window switch RH harness connector D33 terminal 20 (W/B) and front power window motor RH harness connector D38 terminal 6 (W/B).
        Fig 5: Checking For Open Circuit Between Terminals 17 & 6 & Terminals 20 & 6
        G00884556Courtesy of NISSAN MOTOR CO., U.S.A.
        1. OK or NG

          OK: Replace front power window motor LH or RH.

          NG: Repair harness or connectors between power window switch and front power window motor.

  7. Check encoder power supply output signal.
    1. Connect front power window main switch or front power window switch RH connector.
    2. Turn ignition switch to ON position.
    3. Check voltage between front power window main switch harness connector D10 terminal 7 (G/R) or front power window switch RH harness connector D33 terminal 15 (G/R) and ground.
      Fig 6: Checking Voltage Between Terminal 7 Or 15 & Ground
      G00884557Courtesy of NISSAN MOTOR CO., U.S.A.
    1. OK or NG

      OK: GO TO  8 .

      NG: Replace front power window main switch or front power window switch RH.

  8. Check encoder power supply input signal.

    Check voltage between front power window motor LH harness connector D4 terminal 4 (G/R) or front power window motor RH harness connector D38 terminal 4 (G/R) and ground.

    Fig 7: Checking Encoder Power Supply Input Signal
    G00884558Courtesy of NISSAN MOTOR CO., U.S.A.
    1. OK or NG

      OK: GO TO  9 .

      NG: Repair harness or connector.

  9. Check encoder input signal.
    1. Connect front power window motor LH or RH connector.
    2. Check voltage signal between front power window main switch harness connector D10 terminal 14 (G/Y) or front power window switch RH harness connector D33 terminal 19 (G/Y) and ground with oscilloscope when power window is in automatic closing operation.
      Fig 8: Checking Main Switch & RF Power Window Switch
      G00884559Courtesy of NISSAN MOTOR CO., U.S.A.
      1. OK or NG

        OK: Replace front power window main switch or front power window switch RH.

        NG: GO TO 10.

  10. Check harness for open or short.
    1. Turn ignition switch to OFF position.
    2. Disconnect front power window main switch connector or front power window switch RH and front power window motor LH or RH connector.
    3. Check the following:
      • Check continuity between front power window main switch harness connector D10 terminal 14 (G/Y) and front power window motor LH harness connector D4 terminal 5 (G/Y).
      • Check continuity between front power window switch RH harness connector D33 terminal 19 (G/Y) and front power window motor RH harness connector D38 terminal 5 (G/Y).
      • Check continuity between front power window main switch harness connector D10 terminal 14 (G/Y) or front power window switch RH harness connector D33 terminal 19 (G/Y) and ground.
        Fig 9: Checking For Open In Front Power Window Circuit
        G00884560Courtesy of NISSAN MOTOR CO., U.S.A.
    1. OK or NG

      OK: Replace front power window motor LH or RH.

      NG: Repair harness or connector.

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