Power Window Control System: Inspection

1. Disconnect the connector from the master switch.
2. Connect the positive (+) lead from the ammeter to terminal 1 on the wire harness side connector and the negative (-) lead to negative (-) terminal of the battery.
3. Connect the positive (+) lead from the battery to terminal 2 on the wire harness side connector.
4. As the window goes down, check that the current flow is approximately 7 A.
   Fig 1: Checking Power Window System Amperage

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5. Check that the current increases up to approximately 14.5 A or more when the window stops going down.
   NOTE: The PTC opens some 4-90 seconds after the window stops going down, so that check must be made before the PTC operates.

   If the operation is as specified, replace the master switch.

1. Remove the driver door ECU with connectors connected.
2. Attach a current-measuring probe to terminal 5 of the wire harness.
   Fig 2: Inspecting One Touch Power Window System Amperage

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3. Turn the ignition switch ON and set the power window switch in the down position.
4. As the window goes down, check that the current flow is approximately 7 A.
5. Check that the current increases up to approximately 14.5 A or more when the window stops going down.
   NOTE:

   The PTC opens some 4 - 90 seconds after the window stops going down, so that check must be made before the PTC operates.

   If operation is as specified, replace the driver door ECU.

Fig 3: Inspecting Power Window Switch Continuity

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If continuity is not as specified, replace the switch.

Fig 4: Inspecting Power Main Relay Continuity

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If continuity is not as specified, replace the relay.

1. Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 2, check that the motor turns clockwise.
   Fig 5: Inspecting Power Window Motor Operation (Driver's Door)

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2. Reverse the polarity, check that the motor turns counterclockwise.
   Fig 6: Inspecting Power Window Motor Operation (Driver'S Door) (By Reversing Polarity)

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   If operation is not as specified, replace the motor.

   NOTE: Since the jam protection may not work properly be sure to conduct procedures described in "HOW TO RESET POWER MOTOR (RESET AND PULSE SWITCH )" after this inspection.

1. Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 2, check that the motor turns clockwise.
   Fig 7: Inspecting Power Window Motor Operation (Passenger'S Door And Rear Right Door)

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2. Reverse the polarity, check that the motor turns counterclockwise.
   Fig 8: Inspecting Power Window Motor Operation (Passenger'S Door And Rear Right Door) (By Reversing Polarity)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   If operation is not as specified, replace the motor.

1. Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 2, check that the motor turns clockwise.
   Fig 9: Inspecting Power Window Motor Operation (Rear Left Door)

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2. Reverse the polarity, check that the motor turns counterclockwise.
   Fig 10: Inspecting Power Window Motor Operation (Rear Left Door) (By Reversing Polarity)

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   If operation is not as specified, replace the motor.

1. Disconnect the connector from the window motor.
2. Connect the positive (+) lead from the ammeter to terminal 1 of the wire harness side connector and the negative (-) lead to negative terminal of the battery.
   Fig 11: Inspecting PTC Operation (Driver'S Door)

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3. Connect the positive (+) lead from the battery to terminal 2 of the wire harness side connector, and raise the window to the fully closed position.
4. Continue to apply voltage, check that the current changes from approximately 14 A to less than 1 A within 4 to 90 seconds.
5. Disconnect the leads from terminals.
6. Approximately 90 seconds later, connect the positive (+) lead from the battery to terminal 1 and negative (-) lead to terminal 2, check that the window begins to descend.
   Fig 12: Inspecting PTC Operation (Driver'S Door)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   If operation is not as specified, replace the motor.

1. Disconnect the connector from the power window switch.
2. Connect the positive (+) lead from the ammeter to terminal 1 of the wire harness side connector and the negative (-) lead to negative terminal of the battery.
   Fig 13: Inspecting PTC Operation (Except Driver'S Door)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Connect the positive (+) lead from the battery to terminal 2 of the wire harness side connector, and raise the window to the fully closed position.
4. Continue to apply voltage, check that the current changes from approximately 14 A to less than 1 A within 4 to 90 seconds.
5. Disconnect the leads from terminals.
6. Approximately 90 seconds later, connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 2, check that the window begins to descend.
   Fig 14: Inspecting PTC Operation (Except Driver's Door)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   If operation is not as specified, replace the motor.