Power Window Control System: Inspection

WARNING: This page is about a different car, the 2004 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

POWER WINDOW SYSTEM CIRCUIT

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

INSPECT POWER WINDOW REGULATOR MASTER SWITCH ASSY

Inspect the master switch continuity.

Driver's switch (Window unlock and lock)

Standard:

Fig 2: Inspecting Power Window Regulator Master Switch Assembly

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 3: Driver Switch Window Unlock And Lock Table

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Front passenger's switch (Window unlock)

Standard:

Fig 4: Front Passenger Switch (Window Unlock) Table

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Front passenger's switch (Window lock)

Standard:

FRONT PASSENGER Switch Table

Switch position	Symbols (Terminal No.)	Specified condition
UP	B (6) <--> B (7) <--> RLU (18)	Continuity
OFF	PD (15) <--> PU (18)	Continuity
DOWN	B (6) <--> B (7) <--> PD (15)	Continuity

Rear left switch (Window unlock)

Standard:

Fig 5: Rear Left Switch Table

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Rear left switch (Window lock)

Standard:

REAR LEFT SWITCH

Switch position	Symbols (Terminal No.)	Specified condition
UP	B (6) <--> B (7) <--> RLU (12)	Continuity
OFF	RLU (12)<-->RLD (13)	Continuity
DOWN	B (6) <--> B (7) <--> RLD (13)	Continuity

Rear right switch (Window unlock)

Standard:

Fig 6: Rear Right Switch Table

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Rear right switch (Window lock)

Standard:

REAR RIGHT SWITCH

Switch position	Symbols (Terminal No.)	Specified condition
UP	B (6) <--> B (7) <--> RRU (10)	Continuity
OFF	RRU (10) <--> RRD (16)	Continuity
DOWN	B (6) <--> B (7) <--> RRD (16)	Continuity

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

Inspect the master switch illumination.
Standard:

MASTER SWITCH ILLUMINATION

Measuring condition	Specified condition
Battery positive (+) Terminal - 6	Switch illumination lights up
Battery negative (-) Terminal -3	Switch illumination lights up

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

Fig 7: Identifying Master Switch

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT POWER WINDOW REGULATOR SWITCH ASSY
HINT:

All the regulator switches (front passenger's, rear left, rear right) should be inspected in the same procedure,
1. Inspect the regulator switch continuity.
  Standard:
Fig 8: Identifying Regulator Switch
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Fig 9: Power Window Switch Table
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT POWER WINDOW REGULATOR MOTOR

Inspect the regulator motor operation.

HINT:

Driver's side and rear RH regulator motors should be inspected in the same procedure.
Passenger's side and rear LH regulator motors should be inspected in the same procedure.

Check that the motor operates smoothly when the battery positive voltage is applied to each terminal of the connector.

Standard [Driver's side and rear RH side]:

STANDARD

Measuring condition	Operational direction
Battery positive (+) Terminal - 4	Clockwise toward driving axis
Battery negative (-) Terminal - 5	Clockwise toward driving axis
Battery positive (+) Terminal - 5	Counterclockwise toward driving axis
Battery negative (-) Terminal - 4	Counterclockwise toward driving axis

Standard [Front passenger's side and rear LH side]:

FRONT PASSENGER SIDE AND REAR LH SIDE

Measuring condition	Operational direction
Battery positive (+) Terminal - 5	Clockwise toward driving axis
Battery negative (-) Terminal - 4	Clockwise toward driving axis
Battery positive (+) Terminal - 4	Counterclockwise toward driving axis
Battery negative (-) Terminal - 5	Counterclockwise toward driving axis

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

Fig 10: Inspecting Power Window Regulator Motor

Inspect the PTC operation inside the regulator motor.
NOTE: The inspection should be performed with the power window regulator and door glass installed to the vehicle.
1. Set a DC 400 A probe of the TOYOTA electrical tester in the wire harness of terminal 4 or 5.
  NOTE: Match the arrow mark of the probe with the current direction.
2. Set the door glass in the fully closed position.
3. When 60 seconds have elapsed after the door glass is fully closed, check how long it takes for the current to change from approximately 16 - 34 A into 1 A or less when the power window switch is turned UP once again.
  Standard: Approximately 4 - 90 seconds
  
  Fig 11: Identifying Wire Harness Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. When approximately 60 seconds have elapsed after the inspection of the current cut-off, check that the door glass goes down when the power window regulator switch is turned DOWN.
If the result is not as specified, replace the motor.

Fig 12: Identifying Connector

INSPECT RELAY (Making: P/W)

Remove the power window relay from the instrument panel J/B.
Inspect the power window relay.

POWER WINDOW RELAY

Condition	Terminal No.	Specified condition
Constant	1 <--> 2	Continuity
Apply B+ between Terminals 1 and 2	3 <--> 5	Continuity

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

Fig 13: Removing Power Window Relay From Instrument Panel