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Power Window Control System - Diagnostics: Inspection

  1. INSPECT POWER WINDOW REGULATOR MASTER SWITCH ASSY 
    1. Using an electrical tester, check if the diodes are functioning normally.

      Standard: 

      Power window lock switch 

      Driver side switch 

      POWER WINDOW LOCK SWITCH RESISTANCE SPECIFICATIONS

      Tester Connection Switch Position Specified Condition
      6 (PW) - 16 (AUTO) AUTO UP Below 50 Ω
      6 (PW) - 20 (DUP) AUTO UP Below 50 Ω
      6 (PW) -20 (DUP) MANUAL UP Below 50 Ω
      - OFF -
      6 (PW) - 11 (DDN) MANUAL DOWN Below 10 Ω
      6 (PW) - 16 (AUTO) AUTO DOWN Below 10 Ω
      6 (PW) - 11 (DDN) AUTO DOWN Below 50 Ω
      Fig 1: Identifying Power Window Regulator Master Switch Connector Terminals
      G03000826Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using an electrical tester, check if the diodes are functioning normally.

      HINT:

      • As the switch has diodes, a resistance inspection cannot be performed. Use the tester's diodes check function to check the diodes.
      • Connect the tester's leads as shown in the Fig 2 below. If the leads are not connected correctly, the readings will not be accurate. Connect the tester's positive (+) lead to the diode's positive (+) side, and the negative (-) lead to the diode's negative (-) side.
        1. Set the function selector switch to diode check function mode, and check that the diodes are functioning normally.

      Passenger side switch 

      Fig 2: Checking Diodes Function Using Electrical Tester
      G03000827Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 3: Passenger Side Switch Tester'S Leads Connection Reference Table
      G03000828Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Rear LH switch 

      Fig 4: Rear LH Switch Tester'S Leads Connection Reference Table
      G03000829Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Rear RH switch 

      Fig 5: Rear RH Switch Tester'S Leads Connection Reference Table
      G03000830Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Reference (Using for TOYOTA electrical tester): 

      VOLTAGE SPECIFICATIONS

      Test lead Specified Condition
      Normal direction 0.4 to 0.8 V

      If the result is not as specified, replace the switch assy.

    3. Check the window lock switch.

    Standard: 

    WINDOW LOCK SWITCH ILLUMINATION CONDITIONS

    Window Lock Switch Condition Measurement Condition Specified Condition
    NORMAL Battery positive (+) --> Terminal 6 (PW) Battery negative (-) --> Terminal 10 (E) All 4 switches illuminate
    LOCK Battery positive (+) --> Terminal 6 (PW) Battery negative (-) --> Terminal 10 (E) Driver door window switch illuminates

    If the result is not as specified, replace the master switch assy.

  2. INSPECT POWER WINDOW REGULATOR SWITCH ASSY 
    1. Remove the switch (see OVERHAUL and 75-33).
    2. Measure the resistance of the switch when the switch is operated.

    Standard 

    POWER WINDOW REGULATOR SWITCH RESISTANCE SPECIFICATIONS

    Switch Condition Tester Connection Specified Condition
    AUTO UP 3 (A) - 8 (PCT) 1 (U) - 8 (PCT) Below 1 Ω
    UP 1 (U) - 8 (PCT) Below 1 Ω
    OFF - -
    DOWN 6 (D) - 8 (PCT) Below 1 Ω
    AUTO DOWN 3 (A) - 8 (PCT) 6 (D) - 8 (PCT) Below 1 Ω

    If the result is not as specified, replace the regulator switch assy.

    Fig 6: Identifying Power Window Regulator Switch Connector Terminals
    G03000831Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSPECT POWER WINDOW REGULATOR MOTOR ASSY (DRIVER SIDE) 
    1. Check operation of the regulator motor.
      1. Remove the motor (see OVERHAUL ).
      2. Apply battery voltage to the motor terminals.
        NOTE: Do not apply voltage to the terminals except 4 and 5.
      3. Check that the motor operates smoothly.

      OK: 

      MOTOR OPERATES CONDITIONS

      Measurement Condition Specified Condition
      Battery positive (+) --> Terminal 5 (D) Battery negative (-) --> Terminal 4 (U) Motor gear rotates clockwise
      Battery positive (+) --> Terminal 4 (U) Battery negative (-) --> Terminal 5 (D) Motor gear rotates counterclockwise
      Fig 7: Inspecting Power Window Regulator Motor Assy (Driver Side)
      G03000832Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check the PTC operation inside the regulator motor.
      NOTE: The work must be performed with the power window regulator and door glass installed in the vehicle.
      1. Disconnect the driver side power window regulator motor connector.
      2. Connect the ammeter's positive (+) lead to terminal 5 (D) of the wire harness side connector and the negative (-) lead to the battery's negative terminal.
      3. Connect the battery's positive (+) lead to terminal 4 (U) of the wire harness side connector, and raise the window to the fully closed position.
      4. Continue to apply voltage, and check that the current changes to less than 1 A within 4 to 90 seconds.
      5. Disconnect the leads from the terminals.
        Fig 8: Checking PTC Operation Inside Regulator Motor
        G03000833Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      6. Approximately 60 seconds later, connect the battery's positive (+) lead to terminal 5 (D) and the negative (-) lead to terminal 4 (U). Check that the window begins to descend.

      If the result is not as specified, replace the motor assy.

  4. INSPECT POWER WINDOW REGULATOR MOTOR ASSY (PASSENGER SIDE) 
    1. Check operation of the regulator motor.
      1. Remove the motor (see OVERHAUL ).
      2. Apply battery voltage to the motor terminals.
        NOTE: Do not apply voltage to the terminals except 4 and 5.
      3. Check that the motor operates smoothly.

      OK: 

      MOTOR OPERATE CONDITIONS

      Measurement Condition Specified Condition
      Battery positive (+) --> Terminal 4 (U) Battery negative (-) --> Terminal 5 (D) Motor gear rotates clockwise
      Battery positive (+) --> Terminal 5 (D) Battery negative (-) --> Terminal 4 (U) Motor gear rotates counterclockwise
      Fig 9: Inspecting Power Window Regulator Motor Assy (Passenger Side)
      G03000834Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check the PTC operation inside the regulator motor.
      NOTE: The work must be performed with the power window regulator and door glass installed in the vehicle.
      1. Disconnect the driver side power window regulator motor connector.
      2. Connect the ammeter's positive (+) lead to terminal 4 (U) of the wire harness side connector and the negative (-) lead to the battery's negative terminal.
      3. Connect the battery's positive (+) lead to terminal 5 (D) of the wire harness side connector, and raise the window to the fully closed position.
      4. Continue to apply voltage, and check that the current changes to less than 1 A within 4 to 90 seconds.
      5. Disconnect the leads from the terminals.
      6. Approximately 60 seconds later, connect the battery's positive (+) lead to terminal 4 (U) and the negative (-) lead to terminal 5 (D). Check that the window begins to descend.

    If the result is not as specified, replace the motor assy.

    Fig 10: Checking Window Begins To Descend
    G03000835Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSPECT POWER WINDOW REGULATOR MOTOR ASSY (REAR LH) 
    1. Check operation of the regulator motor.
      1. Remove the motor (see OVERHAUL ).
      2. Apply battery voltage to the motor terminals.
        NOTE: Do not apply voltage to the terminals except 4 and 5.
      3. Check that the motor operates smoothly.

      OK: 

      MOTOR OPERATE CONDITIONS

      Measurement Condition Specified Condition
      Battery positive (+) --> Terminal 1 (D) Battery negative (-) --> Terminal 2 (U) Motor gear rotates clockwise
      Battery positive (+) --> Terminal 2 (U) Battery negative (-) --> Terminal 1 (D) Motor gear rotates counterclockwise
      Fig 11: Inspecting Power Window Regulator Motor Assy (Rear LH)
      G03000836Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check the PTC operation inside the regulator motor.
      NOTE: The work must be performed with the power window regulator and door glass installed in the vehicle.
      1. Disconnect the driver side power window regulator motor connector.
      2. Connect the ammeter's positive (+) lead to terminal 1 (D) of the wire harness side connector and the negative (-) lead to the battery's negative terminal.
      3. Connect the battery's positive (+) lead to terminal 2 (U) of the wire harness side connector, and raise the window to the fully closed position.
      4. Continue to apply voltage, and check that the current changes to less than 1 A within 4 to 90 seconds.
      5. Disconnect the leads from the terminals.
      6. Approximately 60 seconds later, connect the battery's positive (+) lead to terminal 1 (D) and the negative (-) lead to terminal 2 (U). Check that the window begins to descend.

    If the result is not as specified, replace the motor assy.

    Fig 12: Checking Window Begins To Descend
    G03000837Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. INSPECT POWER WINDOW REGULATOR MOTOR ASSY (REAR RH) 
    1. Check operation of the regulator motor.
      1. Remove the motor (see OVERHAUL ).
      2. Apply battery voltage to the motor terminals.
        NOTE: Do not apply voltage to the terminals except 4 and 5.
      3. Check that the motor operates smoothly.

      OK: 

      MOTOR OPERATE CONDITIONS

      Measurement Condition Specified Condition
      Battery positive (+) --> Terminal 2 (D) Battery negative (-) --> Terminal 1 (U) Motor gear rotates clockwise
      Battery positive (+) --> Terminal 1 (U) Battery negative (-) --> Terminal 2 (D) Motor gear rotates counterclockwise
      Fig 13: Inspecting Power Window Regulator Motor Assy (Rear RH)
      G03000838Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check the PTC operation inside the regulator motor.
      NOTE: The work must be performed with the power window regulator and door glass installed in the vehicle.
      1. Disconnect the driver side power window regulator motor connector.
      2. Connect the ammeter's positive (+) lead to terminal 2 (D) of the wire harness side connector and the negative (-) lead to the battery's negative terminal.
      3. Connect the battery's positive (+) lead to terminal 1 (U) of the wire harness side connector, and raise the window to the fully closed position.
      4. Continue to apply voltage, and check that the current changes to less than 1 A within 4 to 90 seconds.
      5. Disconnect the leads from the terminals.
      6. Approximately 60 seconds later, connect the battery's positive (+) lead to terminal 2 (D) and the negative (-) lead to terminal 1 (U). Check that the window begins to descend.

    If the result is not as specified, replace the motor assy.

    Fig 14: Checking Window Begins To Descend
    G03000839Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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