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HOMESERVICE MANUALSLEXUS2004GS 300REPAIR AND DIAGNOSIS (SINGLE PAGE)BODY & FRAMEWINDOWSPOWER WINDOW CONTROL SYSTEMINSPECTION

2004 Lexus GS 300

Power Window Control System: Inspection

2004 Lexus GS 300SECTION Inspection

INSPECT POWER WINDOW MASTER SWITCH CONTINUITY

Front driver's switch:

TESTER CONNECTION SPECIFICATION

Switch position	Tester connection	Specified condition
AUTO	7 - 16	Continuity
UP	6 - 16	Continuity
OFF	-	No continuity
DOWN	16 - 18	Continuity

Front passenger's switch:

TESTER CONNECTION SPECIFICATION

Switch position	Tester connection	Specified condition
AUTO	3 - 13	Continuity
UP	3 - 12	Continuity
OFF	-	No continuity
DOWN	3 - 4	Continuity

Rear left switch:

TESTER CONNECTION SPECIFICATION

Switch position	Tester connection	Specified condition
AUTO	13 - 14	Continuity
UP	12 - 14	Continuity
OFF	-	No continuity
DOWN	4 - 14	Continuity

Rear right switch:

TESTER CONNECTION SPECIFICATION

Switch position	Tester connection	Specified condition
UP AUTO	11 - 13	Continuity
UP	11 - 12	Continuity
OFF	-	No continuity
DOWN	4 - 11	Continuity

Fig 1: Inspecting Power Window Master Switch Continuity

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

INSPECT POWER WINDOW MASTER SWITCH CIRCUIT
(See POWER WINDOW MASTER SWITCH CIRCUIT )
INSPECT POWER WINDOW MASTER SWITCH ILLUMINATION
1. Set the window lock switch to the unlock position.
2. Connect the positive (+) lead from the battery to terminal 15 and the negative (-) lead to terminal 16, and check that all the illuminations light up.
3. Connect the positive (+) lead from the voltmeter to terminal 15 and negative (-) lead to terminal 2, and check that the voltage meter needle indicates battery positive voltage.
  
  Fig 2: Connecting Positive Lead From Voltmeter To Terminal 15 And Negative Lead To Terminal 2
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Set the window lock switch to the lock position, check that all the passenger's power window switch illuminations go out.
5. Then, check that the voltage meter needle indicates no voltage.
If operation is not as specified, replace the master switch.

Fig 3: Checking Voltage Meter Needle Indicates No Voltage
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT POWER WINDOW SWITCH CONTINUITY

TESTER CONNECTION SPECIFICATION

Switch position	Tester connection	Specified condition
AUTO	3 - 5	Continuity
UP	3 - 6	Continuity
OFF	-	No continuity
DOWN	3 - 4	Continuity

If continuity is not as specified, replace the switch.

INSPECT POWER WINDOW SWITCH CIRCUIT
Passenger side: (See POWER WINDOW SWITCH CIRCUIT )

Rear LH side: (See POWER WINDOW SWITCH CIRCUIT )

Rear RH side: (See POWER WINDOW SWITCH CIRCUIT )

Fig 4: Inspecting Power Window Switch Circuit
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT POWER WINDOW SWITCH ILLUMINATION
Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead to terminal 2, and check that the indicator light lights up.

If operation is not as specified, replace the switch.

Fig 5: Inspecting Power Window Switch Illumination
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT POWER MAIN RELAY CONTINUITY

TESTER CONNECTION SPECIFICATION

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

If continuity is not as specified, replace the relay.

Fig 6: Inspecting Power Main Relay Continuity

INSPECT POWER MAIN RELAY CIRCUIT
(See INSPECTION )
Driver's door: 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 clockwise.
  
  Fig 7: Inspecting Power Window Motor Operation (Driver'S Door) (1 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Reverse the polarity, check that the motor turns counterclockwise.
If operation is not as specified, replace the motor.
Driver's door: INSPECT POWER WINDOW MOTOR CIRCUIT
(See POWER WINDOW MASTER SWITCH CIRCUIT )

Fig 8: Inspecting Power Window Motor Operation (Driver'S Door) (2 Of 2)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Front passenger's door: 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 clockwise.
  
  Fig 9: Inspecting Power Window Motor Operation (Front Passenger'S Door) (1 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Reverse the polarity, check that the motor turns counterclockwise.
If operation is not as specified, replace the motor.
Front passenger's door: INSPECT POWER WINDOW MOTOR CIRCUIT
(See POWER WINDOW MOTOR CIRCUIT )

Fig 10: Inspecting Power Window Motor Operation (Front Passenger'S Door) (2 Of 2)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Rear left side door: INSPECT POWER WINDOW MOTOR OPERATION
1. Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead to terminal 1, and check that the motor turns clockwise.
  
  Fig 11: Inspect Power Window Motor Operation (Rear Left Side Door) (1 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Reverse the polarity, check that the motor turns counterclockwise.
If operation is not as specified, replace the motor.

Fig 12: Inspect Power Window Motor Operation (Rear Left Side Door) (2 Of 2)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Rear right side door: INSPECT POWER WINDOW MOTOR OPERATION
1. Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 3, and check that the motor turns clockwise.
  
  Fig 13: Inspect Power Window Motor Operation (Rear Right Side Door) (1 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Reverse the polarity, check that the motor turns counterclockwise.
If operation is not as specified, replace the motor.

Fig 14: Inspect Power Window Motor Operation (Rear Right Side Door) (2 Of 2)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Front door: INSPECT POWER WINDOW MOTOR PTC OPERATION
1. Disconnect the connector from the master switch.
2. Connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 1 on the wire harness side connector and raise the window to full closed position.
  
  Fig 15: Inspecting Power Window Motor PTC Operation (Front Door) (1 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Continue to apply voltage, check that there is a PTC operation noise within approximately 4 to 90 seconds.
4. Reverse the polarity, check that the window begins to descend within approximately 60 seconds.
If operation is not as specified, replace the motor.

Fig 16: Inspecting Power Window Motor PTC Operation (Front Door) (2 Of 2)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Rear door: INSPECT POWER WINDOW MOTOR PTC OPERATION
1. Disconnect the connector from the rear door ECU.
2. Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead to terminal 1 on the wire harness side connector, and raise the window to full closed position.
3. Continue to apply voltage, check that there is a PTC operation noise within approximately 4 to 90 seconds.
  
  Fig 17: Inspecting Power Window Motor PTC Operation (Rear Door) (1 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Reverse the polarity, check that the window begins to descend within approximately 60 seconds.
If operation is not as specified, replace the motor.

Fig 18: Inspecting Power Window Motor PTC Operation (Rear Door) (2 Of 2)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Driver's door (window up): INSPECT JAM PROTECTION LIMIT SWITCH OPERATION
1. Connect the positive (+) lead from the ohmmeter to terminal 4 and the negative (-) lead to terminal 5.
2. Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 2.
3. Check that the continuity exists when the window goes up.
  
  Fig 19: Inspecting Jam Protection Limit Switch Operation (Driver'S Door Window Up) (1 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Check that the no continuity exists when the window is in the fully closed position.
If operation is not as specified, replace the motor.

NOTE: If connecting the wire harness wrongly, the sensor might be damaged so caution is necessary.
Driver's door: INSPECT JAM PROTECTION LIMIT SWITCH CIRCUIT (See JAM PROTECTION LIMIT SWITCH CIRCUIT )

Fig 20: Inspecting Jam Protection Limit Switch Operation (Driver'S Door Window Up) (2 Of 2)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Front passenger's door (window up): INSPECT JAM PROTECTION LIMIT SWITCH OPERATION
1. Connect the positive (+) lead from the ohmmeter to terminal 4 and the negative (-) lead to terminal 5.
2. Connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 1.
3. Check that the continuity exists when the window goes up.
  
  Fig 21: Inspecting Jam Protection Limit Switch Operation (Front Passenger'S Door Window Up) (1 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Check that the no continuity exists when the window is in the fully closed position.
If operation is not as specified, replace the motor.

NOTE: If connecting the wire harness wrongly, the sensor might be damaged so caution is necessary.
Passenger's Door: INSPECT JAM PROTECTION LIMIT SWITCH CIRCUIT (See JAM PROTECTION LIMIT SWITCH CIRCUIT )

Fig 22: Inspecting Jam Protection Limit Switch Operation (Front Passenger'S Door Window Up) (2 Of 2)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Rear LH side door (window up): INSPECT JAM PROTECTION LIMIT SWITCH OPERATION
1. Connect the positive (+) lead from the ohmmeter to terminal 2 and the negative (-) lead to terminal 6.
2. Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead to terminal 1.
3. Check that the continuity exists when the window goes up.
  
  Fig 23: Inspecting Jam Protection Limit Switch Operation (Rear LH Side Door) (1 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Check that the no continuity exists when the window is in the fully closed position.
If operation is not as specified, replace the motor.

NOTE: If connecting the wire harness wrongly, the sensor might be damaged so caution is necessary.