Power Window Control System: Inspection

INSPECT POWER WINDOW MASTER SWITCH CONTINUITY

Fig 1: Identifying Power Window Master Switch Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

POWER WINDOW MASTER SWITCH CONTINUITY (DRIVER'S SWITCH)

Switch position	Tester connection	Specified condition
UP	1 - 4, 3 - 9	Continuity
OFF	1 - 3 - 4	Continuity
DOWN (AUTO)	1 - 3, 4 - 9	Continuity

POWER WINDOW MASTER SWITCH CONTINUITY (PASSENGER'S SWITCH: WINDOW UNLOCK)

Switch position	Tester connection	Specified condition
UP	1 - 10, 8 - 9	Continuity
OFF	1 - 8 - 10	Continuity
DOWN	1 - 8, 9 - 10	Continuity

POWER WINDOW MASTER SWITCH CONTINUITY (PASSENGER'S SWITCH: WINDOW LOCK)

Switch position	Tester connection	Specified condition
UP	8 - 9	Continuity
OFF	8 - 10	Continuity
DOWN	9 - 10	Continuity

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

INSPECT ONE-TOUCH POWER WINDOW SYSTEM CURRENT OF CIRCUIT (USING AN AMMETER)
1. Disconnect the connector from the master switch.
2. Connect the positive (+) lead from the ammeter to terminal 3 on the wire harness side connector and the negative (-) lead to the negative (-) terminal of the battery.
  
  Fig 2: Inspecting One-Touch Power Window System Current Of Circuit - Using An Ammeter (1 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Connect the positive (+) lead from the battery to terminal 4 on the wire harness side connector.
4. When the window goes down, check that the current is approximately 7 A.
5. Check that the current increases to approximately 14.5 A or more when the window stops going down.
  
  Fig 3: Inspecting One-Touch Power Window System Current Of Circuit - Using An Ammeter (2 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  NOTE:
  Since the circuit breaker opens in 4-40 seconds after the window stops going down, the check must be performed before the circuit breaker starts operating
  
  If the result is not as specified, replace the switch.
INSPECT ONE-TOUCH POWER WINDOW SYSTEM/CURRENT OF CIRCUIT (USING AN AMMETER WITH A CURRENT-MEASURING PROBE)
1. Remove the master switch with the connector connected.
2. Attach a current-measuring probe to terminal 9 of the wire harness side connector.
  
  Fig 4: Inspecting One-Touch Power Window System/Current Of Circuit - Using An Ammeter With A Current-Measuring Probe (1 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Turn the ignition switch ON and set the power window switch in the down position.
4. When the window goes down, check that the current is approximately 7 A.
5. Check that the current increases to approximately 14.5 A or more when the window stops going down.
  
  Fig 5: Inspecting One-Touch Power Window System/Current Of Circuit - Using An Ammeter With A Current-Measuring Probe (2 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NOTE:
Since the circuit breaker opens in 4 - 40 seconds after the window stops going down, the check must be performed before the circuit breaker starts operating.

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

INSPECT POWER WINDOW CONTROL SWITCH CONTINUITY

Fig 6: Identifying Power Window Control Switch Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

POWER WINDOW CONTROL 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.

INSPECT POWER RELAY CONTINUITY

Fig 7: Inspecting Power Relay Continuity

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

POWER RELAY CONTINUITY

Condition	Tester connection	Specified condition
Constant	1 - 2	Continuity
Apply B+ between terminals 1 and 2	3 - 5	Continuity

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

Driver Side Door:
1. INSPECT POWER WINDOW MOTOR OPERATION
1. Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 2, and check that the motor turns counterclockwise.
  
  Fig 8: Inspecting Power Window Motor Operation - Driver Side Door
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Reverse the polarity, and check that the motor turns clockwise.
If the operation is not as specified, replace the motor.
Passenger Side Door:
1. INSPECT POWER WINDOW MOTOR OPERATION
1. Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 2, and check that the motor turns counterclockwise.
  
  Fig 9: Inspecting Power Window Motor Operation - Passenger Side Door
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Reverse the polarity, and check that the motor turns clockwise.
If the operation is not as specified, replace the motor.
Driver Side Door:
1. INSPECT POWER WINDOW MOTOR PTC THERMISTOR OPERATION
1. Disconnect the connector from the power window motor.
2. Connect the positive (+) lead from the ammeter to terminal 1 on the wire harness side connector and the negative (-) lead to the negative terminal of the battery.
  
  Fig 10: Power Window Motor PTC Thermistor Operation - Driver Side Door (1 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Connect the positive (+) lead from the battery to terminal 2 on 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 in 4 to 90 seconds.
  
  Fig 11: Power Window Motor PTC Thermistor Operation - Driver Side Door (2 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Disconnect the leads from the terminals.
6. Approximately 60 seconds later, connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 2, and check that the window begins to descend.
If the operation is not as specified, replace the motor.
Passenger Side Door:
1. INSPECT POWER WINDOW MOTOR PTC THERMISTOR OPERATION
1. Disconnect the connector from the power window motor.
2. Connect the positive (+) lead from the ammeter to terminal 2 on the wire harness side connector and the negative (-) lead to the negative terminal of the battery.
  
  Fig 12: Power Window Motor PTC Thermistor Operation - Passenger Side Door (1 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Connect the positive (+) lead from the battery to terminal 1 on the wire harness side connector, and raise the window to the fully close position.
4. Continue to apply voltage and check that the current changes to less than 1 A in 4 to 90 seconds.
  
  Fig 13: Power Window Motor PTC Thermistor Operation - Passenger Side Door (2 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Disconnect the leads from the terminals.
6. Approximately 60 seconds later, connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 1, and check that the window begins to descend.
If the operation is not as specified, replace the motor.

CHECK POWER WINDOW MASTER SWITCH CIRCUIT

Disconnect the connector from the master switch and check the connector on the wire harness side.

Fig 14: Identifying Power Window Master Switch Connector Terminals

POWER WINDOW MASTER SWITCH CIRCUIT

Tester connection	Condition	Specified condition
1 - Ground	Constant	Continuity
3 - 4	Constant	Continuity
8 - 10	Power window master switch OFF	Continuity
8 - 10	Power window master switch UP or DOWN	Continuity
9 - Ground	Constant	Battery positive voltage

If the result is not as specified, inspect the circuits connected to other parts.

CHECK INTEGRATION RELAY

Fig 15: Locating Integration Relay
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Remove the integration relay from the driver side junction block, and check the voltage or continuity of each terminal on the junction block side. (See step 7 or 8 of INSPECTION ).