Power Window Control System: Inspection

POWER WINDOW SYSTEM CIRCUIT

Fig 1: Power Window System Circuit Diagram
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT POWER WINDOW REGULATOR MASTER SWITCH ASSY

Check the resistance between each terminal of the connector when the switch is operated.

Fig 2: Inspecting Power Window Regulator Master Switch Assembly

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard:

Driver switch

SPECIFIED CONDITION

Window Lock Switch Condition	Power Window Switch Condition	Tester Connection	Specified Condition
Constant (ON/OFF)	UP	1 - 9	Below 1Ω
		3 - 9
		4 - 6
		4 - 7
	OFF	1 - 4
		3 - 4
		1 - 9
		3 - 9
	DOWN	1 - 4
		3 - 4
		6 - 9
		7 - 9
	AUTO DOWN	1 - 4
		3 - 4
		6 - 9
		7 - 9

Front passenger switch

SPECIFIED CONDITION

Window Lock Switch Condition	Power Window Switch Condition	Tester Connection	Specified Condition
OFF	UP	1 - 15	Below 1Ω
		3 - 15
		6 - 18
		7 - 18
	OFF	1 - 15
		3 - 15
		1 - 18
		3 - 18
	DOWN	1 - 18
		3 - 18
		6 - 15
		7 - 15
ON	UP	6 - 18
		7 - 18
		OFF
	DOWN	6 - 15
	DOWN	7 - 15

Rear LH switch

SPECIFIED CONDITION

Window Lock Switch Condition	Power Window Switch Condition	Tester Connection	Specified Condition
OFF	UP	1 - 13	Below 1Ω
		3 - 13
		6 - 12
		7 - 12
	OFF	1 - 12
		3 - 12
		1 - 13
		3 - 13
	DOWN	1 - 12
		3 - 12
		6 - 13
		7 - 13
ON	UP	6 - 12
		7 - 12
		OFF
	DOWN	6 - 13
	DOWN	7 - 13

Rear RH switch

SPECIFIED CONDITION

Window Lock Switch Condition	Power Window Switch Condition	Tester Connection	Specified Condition
OFF	UP	1 - 16	Below 1Ω
		3 - 16
		6 - 10
		7 - 10
	OFF	1 - 10
		3 - 10
		1 - 16
		3 - 16
	DOWN	1 - 10
		3 - 10
		6 - 16
		7 - 16
ON	UP	6 - 10
	UP	7 - 10
	OFF	10 - 16
	DOWN	6 - 16
	DOWN	7 - 16

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

Apply battery voltage to the master switch terminals and check the AUTO lamp.

Fig 3: Applying Battery Voltage To Master Switch Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard:

MEASUREMENT CONNECTION AND SPECIFIED CONDITION

Measurement Condition	Specified Condition
Battery positive (+) --> Terminal 6 Battery negative (-) --> Terminal 3	AUTO lamp illuminates

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

INSPECT POWER WINDOW REGULATOR SWITCH ASSY

Fig 4: Identifying Power Window Regulator Switch Assembly

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Check the resistance between each terminal of the connector when the switch is operated.

Standard:

SWITCH CONNECTION AND SPECIFIED CONDITION

Switch Condition	Tester Connection	Specified Condition
UP	1 - 2	Below 1Ω
UP	3 - 4
OFF	1 - 2
OFF	3 - 5
DOWN	1 - 4
DOWN	3 - 5

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

INSPECT POWER WINDOW REGULATOR MOTOR

Check operation of the regulator motor.

NOTE:

The driver side and rear RH regulator motors should be inspected using the same procedure.
The passenger side and rear LH regulator motors should be inspected using the same procedure.

Apply battery voltage to the motor terminals.

Check that the motor operates smoothly.

Standard:

Driver side and rear RH

MEASUREMENT CONNECTION AND SPECIFIED CONDITION

Measurement Condition	Specified Condition
Battery positive (+) --> Terminal 4 Battery negative (-) --> Terminal 5	Motor gear rotates clockwise
Battery positive (+) --> Terminal 5 Battery negative (-) --> Terminal 4	Motor gear rotates counterclockwise

Front passenger side and rear LH

MEASUREMENT CONNECTION AND SPECIFIED CONDITION

Measurement Condition	Specified Condition
Battery positive (+) --> Terminal 5 Battery negative (-) --> Terminal 4	Motor gear rotates clockwise
Battery positive (+) --> Terminal 4 Battery negative (-) --> Terminal 5	Motor gear rotates counterclockwise

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

Fig 5: Inspecting Power Window Regulator Motor

Check operation of the PTC inside the regulator motor.
NOTE: The work must be performed with the power window regulator and door glass installed to the vehicle.
1. Set an electrical tester DC 400 A probe to the wire harness of terminal 4 or 5.
  NOTE: Match the arrow mark of the probe with the current direction.
  
  Fig 6: Identifying Door Glass In Fully Closed Position
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Fully close the door glass by operating the power window switch and keep the door glass there for approx. 60 seconds.
3. Try to operate the power window past the fully closed position using the power window switch and measure the time until the electrical current changes into 1 A from 16 to 34 A (Inspection of current shut-off).
  Standard: 4 to 90 seconds
4. Check that the door glass goes down when the power window regulator switch is pushed DOWN.
  If the result is not as specified, replace the motor assy.
  
  Fig 7: Identifying Door Glass In Down Position
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT RELAY (POWER)

Remove the POWER relay from the instrument panel J/B.

Check the resistance between each terminal of the relay.

Fig 8: Checking Resistance Between Each Terminal Of Relay

Standard:

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Specified Condition
3 - 5	10 kΩ or higher
3 - 5	Below 1Ω (When battery voltage is applied to terminals 1 and 2)

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