Power Window Control System: Inspection

INSPECT POWER WINDOW MASTER SWITCH CONTINUITY

Fig 1: Identifying Power Window Master Switch

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Front driver's switch (Window unlock and lock):

FRONT DRIVER'S SWITCH CONTINUITY (WINDOW UNLOCK & LOCK)

Switch Position	Tester Connection	Specified Condition
UP	4 - 7 1- 3 - 9	Continuity
OFF	1 - 3 - 4 1- 3 - 9	Continuity
DOWN	7 - 9 1 - 3 - 4	Continuity

Front passenger's switch (Window unlock):

FRONT PASSENGER'S SWITCH CONTINUITY (WINDOW UNLOCK)

Switch Position	Tester Connection	Specified Condition
UP	6 - 13 1 - 3 - 15	Continuity
OFF	1 - 3 - 13 1 - 3 - 15	Continuity
DOWN	6 - 15 1 - 3 - 13	Continuity

Front passenger's switch (Window lock):

FRONT PASSENGER'S SWITCH CONTINUITY (WINDOW LOCK)

Switch Position	Tester Connection	Specified Condition
UP	6 - 13	Continuity
OFF	13 - 15	Continuity
DOWN	6 - 15	Continuity

Rear left switch (Window unlock):

REAR LEFT SWITCH CONTINUITY (WINDOW UNLOCK)

Switch Position	Tester Connection	Specified Condition
UP	6 - 12 1 - 3 - 10	Continuity
OFF	1 - 3 - 12 1 - 3 - 10	Continuity
DOWN	6 - 10 1 - 3 - 12	Continuity

Rear left switch (Window lock):

REAR LEFT SWITCH CONTINUITY (WINDOW LOCK)

Switch Position	Tester Connection	Specified Condition
UP	6 - 12	Continuity
OFF	10 - 12	Continuity
DOWN	6 - 10	Continuity

Rear right switch (Window unlock):

REAR RIGHT SWITCH CONTINUITY (WINDOW UNLOCK)

Switch Position	Tester Connection	Specified Condition
UP	6 - 18 1 - 3 - 16	Continuity
OFF	1 - 3 - 18 1 - 3 - 16	Continuity
DOWN	6 - 16 1 - 3 - 18	Continuity

Rear right switch (Window lock):

REAR RIGHT SWITCH CONTINUITY (WINDOW LOCK)

Switch Position	Tester Connection	Specified Condition
UP	6 - 18	Continuity
OFF	16 - 18	Continuity
DOWN	6 - 16	Continuity

If the continuity is not as specified, replace the master switch.

Using an ammeter: INSPECT ONE TOUCH POWER WINDOW SYSTEM/CURRENT OF CIRCUIT
1. Disconnect the connector from the master switch.
2. Connect the positive (+) lead from the ammeter to terminal 4 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 9 on the wire harness side connector.
  
  Fig 2: Connecting Leads From Battery To Terminal 4 & 9
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. As the window moves down, check if the current flow is approximately 7 A.
5. Check if the current increases up to approximately 14.5 A or more when the window stops moving down.
  HINT:
  
  The circuit breaker opens 4 to 40 seconds after the window stops moving down. Therefore, check must be made before the circuit breaker operates.
  
  If operation is not as specified, replace the master switch.
Using an ammeter with a current-measuring probe: INSPECT ONE TOUCH POWER WINDOW SYSTEM/CURRENT OF CIRCUIT
1. Remove the master switch with the connector connected.
2. Attach a current-measuring probe to terminal 4 of the wire harness.
3. Turn the ignition switch ON and set the power window switch in the down position.
4. As the window moves down, check if the current flow is approximately 7 A.
5. Check if the current increases up to approximately 14.5 A or more when the window stops moving down.
  HINT:
  
  The circuit breaker opens 4 to 40 seconds after the window stops moving down. Therefore, check must be made before the circuit breaker operates.
  
  If operation is not as specified, replace the master switch.

Passenger's and rear switch: INSPECT PASSENGER'S AND REAR POWER WINDOW REGULATOR SWITCH CONTINUITY

Fig 6: Identifying Passenger's And Rear Power Window Regulator Switch

PASSENGER'S & REAR POWER WINDOW REGULATOR SWITCH CONTINUITY

Switch Position	Tester Connection	Specified Condition
UP	1 - 2 3 - 4	Continuity
OFF	1 - 2 3 - 5	Continuity
DOWN	1 - 4 3 - 5	Continuity

If the continuity is not as specified, replace the switch.

Front left side door and rear right side door: INSPECT POWER WINDOW MOTOR OPERATION
1. Connect the positive (+) lead from the battery to terminal 4 and the negative (-) lead to terminal 5. Check if the motor turns clockwise.
  
  Fig 7: Checking Motor For Turning Clockwise (Front Left Side & Rear Right Side Door)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Reverse the polarity and check if the motor turns counterclockwise.
  
  Fig 8: Checking Motor For Turning Counter-Clockwise (Front Left Side & Rear Right Side Door)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If operation is not as specified, replace the motor.
Front right side door and rear left side door: INSPECT POWER WINDOW MOTOR OPERATION
1. Connect the positive (+) lead from the battery to terminal 5 and the negative (-) lead to terminal 4. Check if the motor turns clockwise.
  
  Fig 9: Checking Motor For Turning Clockwise (Front Right Side & Rear Left Side Door)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Reverse the polarity and check if the motor turns counterclockwise.
  If operation is not as specified, replace the motor.
  
  Fig 10: Checking Motor For Turning Counter-Clockwise (Front Right Side & Rear Left Side Door)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT POWER WINDOW MOTOR PTC THERMISTOR OPERATION
1. Disconnect the connector from the driver door window motor.
2. Connect the positive (+) lead from the ammeter to terminal 5 on the wire harness side connector and the negative (-) lead to the negative terminal of the battery.
3. Connect the positive (+) lead from the battery to terminal 4 on the wire harness side connector. Then, raise the window to the fully closed position.
4. Continue to apply voltage and check if 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 positive (+) lead from the battery to terminal 5 and the negative (-) lead to terminal 4. Check if the window begins to descend.
  If operation is not as specified, replace the motor.
  
  Fig 12: Reconnecting Leads From Ammeter To Terminal 5 & 4
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Window up: INSPECT FRONT WINDOW JAM PROTECTION LIMIT SWITCH OPERATION
1. Disconnect the connector from the master switch.
2. Connect the positive (+) lead from the ohmmeter to terminal 17 and the negative (-) lead to terminal 2.
3. Connect the positive (+) lead from the battery to terminal 4 and the negative (-) lead to terminal 9.
4. Check if continuity exists when the window moves up.
  
  Fig 13: Connecting Leads From Ohmmeter To Terminal 17 & 2 & Connecting Leads From Battery To Terminal 4 & 9
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Check if no continuity exists when the window is in the fully closed position.
  
  Fig 14: Checking For Continuity With Window Closed
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If operation is not as specified, replace the motor.
Window down: INSPECT FRONT WINDOW JAM PROTECTION LIMIT SWITCH OPERATION
1. Connect the positive (+) lead from the ohmmeter to terminal 17 and the negative (-) lead to terminal 2.
2. Connect the positive (+) lead from the battery to terminal 9 and the negative (-) lead to terminal 4.
3. Check if continuity exists when the window moves up.
  
  Fig 15: Identifying Master Switch Terminal (Window Down)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Check if no continuity exists when the window is in the fully opened position.
  NOTE: Connecting the wire harness incorrectly may damage the sensor. Caution is necessary.
  
  Fig 16: Identifying Master Switch Terminal (Window Fully Down)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT FRONT WINDOW JAM PROTECTION PULSE SWITCH OPERATION
1. Connect the positive (+) lead from the electrical tester to terminal 14 and the negative (-) lead to terminal 2.
2. Connect the positive (+) lead from the battery to terminal 4 and the negative (-) lead to terminal 9.
3. Check if pulse is generated when the motor is running.
4. Reverse the polarity and check if the pulse is generated.
  
  Fig 18: Reversing Polarity & Checking If Pulse Is Generated
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If operation is not as specified, replace the motor.
  
  NOTE: Connecting the wire harness incorrectly may damage the sensor. Caution is necessary.

INSPECT POWER RELAY CONTINUITY

Fig 19: Identifying Power Relay Circuit Diagram

POWER RELAY CONTINUITY

Tester Connection	Specified Condition
3 - 5	No continuity
3 - 5	Continuity (When battery voltage is applied to terminals 1 and 2)

If the continuity is not as specified, replace the relay.

Driver's door glass only: CHECK JAM PROTECTION FUNCTION
NOTE:
- Do not check this function using a part of your body such as a hand. Also, pay thorough attention that nothing gets caught by accident in this process.
- If the power window motor has just been reset, raise and lower the door glass several times using AUTO operation before performing the check.
HINT:

The jam protection function works only during AUTO UP operation.
1. Fully open the door glass.
2. Insert the hammer handle when the door glass is almost in the fully closed position.
3. Try to fully close the door glass with the AUTO UP operation. Check if the door glass moves down by about 200 mm (7.87 in.) and stops there so that the hammer handle is not caught.
  HINT:
  
  The door glass usually moves down by approximately 50 mm (1.97 in.). However, when opening between the door glass and body is less than 200 mm (7.87 in.), the door glass moves down by 200 mm (7.87 in.) or keeps moving down for 5 seconds, and then stops.
4. During DOWN operation, check if the door glass does not move up even if the power window master switch is pulled UP.