LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2012 >> IS 350 Base, AWD >> Repair and Diagnosis >> Body & Frame >> Windows >> Windshield / WINDOWGLASS (Service Information) >> Power Window Regulator Motor >> Inspection >> Inspection
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Power Window Regulator Motor: Inspection: Inspection

  1. INSPECT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH FRONT 
    1. Apply positive (+) battery voltage to connector terminal 2 (B).
      Fig 1: Inspecting Power Window Regulator Motor Assembly LH Front
      GTY140848Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Do not apply positive (+) battery voltage to any terminals other than terminal 2 (B) to avoid damaging the pulse sensor inside the motor.

    2. Apply negative (-) battery voltage to connector terminals 1 (E) and 7 (DWN1) or 10 (UP1).
    3. Check that the motor gear rotates smoothly as follows:

      OK

      Measurement Condition Specified Condition
      1. Connect the positive (+) battery cable to terminal 2 (B), and connect the negative (-) battery cable to terminal 1 (E), and keep them connected for 3 seconds or more.
      2. With terminals 2 (B) and 1 (E) connected, connect the negative (-) battery cable to terminal 10 (UP1).
      3. Disconnect and reconnect the negative (-) battery cable to terminal 10 (UP1) within 1 second.
      Motor gear rotates clockwise (Up)
      1. Connect the positive (+) battery cable to terminal 2 (B), and connect the negative (-) battery cable to terminal 1 (E), and keep them connected for 3 seconds or more.
      2. With terminals 2 (B) and 1 (E) connected, connect the negative (-) battery cable to terminal 7 (DWN1).
      3. Disconnect and reconnect the negative (-) battery cable to terminal 7 (DWN1) within 1 second.
      Motor gear rotates counterclockwise (Down)
      • If the result is not as specified, replace the power window regulator motor assembly LH front.
      WARNING:

      Reset the power window regulator motor (initialize the pulse sensor) after installing the power window regulator motor and regulator assembly onto the door.

  2. INSPECT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH FRONT 
    1. Apply positive (+) battery voltage to connector terminal 2 (B).
      Fig 2: Inspecting RH Front Power Window Regulator Motor Assembly
      GTY127344Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Do not apply positive (+) battery voltage to any terminals other than terminal 2 (B) to avoid damaging the pulse sensor inside the motor.

    2. Apply negative (-) battery voltage to connector terminals 1 (E) and 7 (DWN1) or 10 (UP1).
    3. Check that the motor gear rotates smoothly as follows:

      OK

      Measurement Condition Specified Condition
      1. Connect the positive (+) battery cable to terminal 2 (B), and connect the negative (-) battery cable to terminal 1 (E), and keep them connected for 3 seconds or more.
      2. With terminals 2 (B) and 1 (E) connected, connect the negative (-) battery cable to terminal 10 (UP1).
      3. Disconnect and reconnect the negative (-) battery cable to terminal 10 (UP1) within 1 second.
      Motor gear rotates counterclockwise (Up)
      1. Connect the positive (+) battery cable to terminal 2 (B), and connect the negative (-) battery cable to terminal 1 (E), and keep them connected for 3 seconds or more.
      2. With terminals 2 (B) and 1 (E) connected, connect the negative (-) battery cable to terminal 7 (DWN1).
      3. Disconnect and reconnect the negative (-) battery cable to terminal 7 (DWN1) within 1 second.
      Motor gear rotates clockwise (Down)
      • If the result is not as specified, replace the power window regulator motor assembly RH front.
      WARNING:

      Reset the power window regulator motor (initialize the pulse sensor) after installing the power window regulator motor and regulator assembly onto the door.

  3. INSPECT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH REAR 
    1. Apply positive (+) battery voltage to connector terminal 2 (B).
      Fig 3: Inspecting Power Window Regulator Motor Assembly LH Rear
      GTY144432Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Do not apply positive (+) battery voltage to any terminals other than terminal 2 (B) to avoid damaging the pulse sensor inside the motor.

    2. Apply negative (-) battery voltage to connector terminals 1 (E) and 7 (DWN1) or 10 (UP1).
    3. Check that the motor gear rotates smoothly as follows:

      OK

      Measurement Condition Specified Condition
      1. Connect the positive (+) battery cable to terminal 2 (B), and connect the negative (-) battery cable to terminal 1 (E), and keep them connected for 3 seconds or more.
      2. With terminals 2 (B) and 1 (E) connected, connect the negative (-) battery cable to terminal 10 (UP1).
      3. Disconnect and reconnect the negative (-) battery cable to terminal 10 (UP1) within 1 second.
      Motor gear rotates counterclockwise (Up)
      1. Connect the positive (+) battery cable to terminal 2 (B), and connect the negative (-) battery cable to terminal 1 (E), and keep them connected for 3 seconds or more.
      2. With terminals 2 (B) and 1 (E) connected, connect the negative (-) battery cable to terminal 7 (DWN1).
      3. Disconnect and reconnect the negative (-) battery cable to terminal 7 (DWN1) within 1 second.
      Motor gear rotates clockwise (Down)
      • If the result is not as specified, replace the power window regulator motor assembly LH rear.
      WARNING:

      Reset the power window regulator motor (initialize the pulse sensor) after installing the power window regulator motor and regulator assembly onto the door.

  4. INSPECT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH REAR 
    1. Apply positive (+) battery voltage to connector terminal 2 (B).
      Fig 4: Inspecting RH Rear Power Window Regulator Motor Assembly
      GTY127346Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Do not apply positive (+) battery voltage to any terminals other than terminal 2 (B) to avoid damaging the pulse sensor inside the motor.

    2. Apply negative (-) battery voltage to connector terminals 1 (E) and 7 (DWN1) or 10 (UP1).
    3. Check that the motor gear rotates smoothly as follows:

      OK

      Measurement Condition Specified Condition
      1. Connect the positive (+) battery cable to terminal 2 (B), and connect the negative (-) battery cable to terminal 1 (E), and keep them connected for 3 seconds or more.
      2. With terminals 2 (B) and 1 (E) connected, connect the negative (-) battery cable to terminal 10 (UP1).
      3. Disconnect and reconnect the negative (-) battery cable to terminal 10 (UP1) within 1 second.
      Motor gear rotates clockwise (Up)
      1. Connect the positive (+) battery cable to terminal 2 (B), and connect the negative (-) battery cable to terminal 1 (E), and keep them connected for 3 seconds or more.
      2. With terminals 2 (B) and 1 (E) connected, connect the negative (-) battery cable to terminal 7 (DWN1).
      3. Disconnect and reconnect the negative (-) battery cable to terminal 7 (DWN1) within 1 second.
      Motor gear rotates counterclockwise (Down)
      • If the result is not as specified, replace the power window regulator motor assembly RH rear.
      WARNING:

      Reset the power window regulator motor (initialize the pulse sensor) after installing the power window regulator motor and regulator assembly onto the door.