lock LEXUS GS400 2000 Service Owner's Guide

BE0HE±10
I01363
Driver side Junction Block

Body ECU No.2
Ignition SwitchPower Window Switch
Power Window Master Switch
Power Window Motor
Power Window Motor
Power Window Switch Power Window Switch
Passenger side Junction Block

Body ECU No.1
BE±116
± BODY ELECTRICALPOWER WINDOW CONTROL SYSTEM
2417 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
LOCATION

I04117
15 16
2
Unlock
I04118
15 16
2
Lock BE±118
± BODY ELECTRICALPOWER WINDOW CONTROL SYSTEM
2419 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
3. INSPECT POWER WINDOW MASTER SWITCH ILLU-
MINATION
(a) Set the window lock switch to the unlock position.
(b) 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.
(c) Connect the positive (+) lead from the voltmeter to termi-
nal 15 and negative (±) lead to terminal 2, and check that
the voltage meter needle indicates battery positive volt-
age.
(d) Set the window lock switch to the lock position, check that
all the passenger's power window switch illuminations go
out.
(e) Then, check that the voltage meter needle indicates no
voltage.
If operation is not as specified, replace the master switch.

I04123
I04119
2
3
I01200
2 1
35
2 5
1 3
I05474
1
2
BE±120
± BODY ELECTRICALPOWER WINDOW CONTROL SYSTEM
2421 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
6. INSPECT POWER WINDOW SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
AUTO3 ± 5Continuity
UP3 ± 6Continuity
OFF±No continuity
DOWN3 ± 4Continuity
If continuity is not as specified, replace the switch.
7. INSPECT POWER WINDOW SWITCH CIRCUIT
Passenger side: (See page DI±908)
Rear LH side: (See page DI±936)
Rear RH side: (See page DI±953)
8. 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.
9. INSPECT POWER MAIN RELAY CONTINUITY
ConditionTester connectionSpecified condition
Constant1 ± 2Continuity
Apply B+ between
terminals 1 and 2.3 ± 5Continuity
If continuity is not as specified, replace the relay.
10. INSPECT POWER MAIN RELAY CIRCUIT
(See page BE±21)
11. Driver 's door:
INSPECT POWER WINDOW MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
1 and the negative (±) lead to terminal 2, and check that
the motor turns clockwise.

I054751
2
I05476
1
2
I054771
2
I04124
13
I04125
13
± BODY ELECTRICALPOWER WINDOW CONTROL SYSTEM
BE±121
2422 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(b) Reverse the polarity, check that the motor turns counter-
clockwise.
If operation is not as specified, replace the motor.
12. Driver 's door:
INSPECT POWER WINDOW MOTOR CIRCUIT
(See page DI±876)
13. Front passenger's door:
INSPECT POWER WINDOW MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
1 and the negative (±) lead to terminal 2, and check that
the motor turns clockwise.
(b) Reverse the polarity, check that the motor turns counter-
clockwise.
If operation is not as specified, replace the motor.
14. Front passenger's door:
INSPECT POWER WINDOW MOTOR CIRCUIT
(See page DI±910)
15. Rear left side door:
INSPECT POWER WINDOW MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
3 and the negative (±) lead to terminal 1, and check that
the motor turns clockwise.
(b) Reverse the polarity, check that the motor turns counter-
clockwise.
If operation is not as specified, replace the motor.

I04126
13
I04127
13
I04128
within
4 to 40 seconds
21
I04129
2 within
60 seconds
1
I04130
within
4 to 40 seconds
3 1
BE±122
± BODY ELECTRICALPOWER WINDOW CONTROL SYSTEM
2423 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
16. Rear right side door:
INSPECT POWER WINDOW MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
1 and the negative (±) lead to terminal 3, and check that
the motor turns clockwise.
(b) Reverse the polarity, check that the motor turns counter-
clockwise.
If operation is not as specified, replace the motor.
17. Front door:
INSPECT POWER WINDOW MOTOR PTC OPERA-
TION
(a) Disconnect the connector from the master switch.
(b) Connect the positive (+) lead from the battery to terminal
2 and the negative (±) lead to terminal 1 on the wire har-
ness side connector and raise the window to full closed
position.
(c) Continue to apply voltage, check that there is a PTC op-
eration noise within approximately 4 to 90 seconds.
(d) Reverse the polarity, check that the window begins to de-
scend within approximately 60 seconds.
If operation is not as specified, replace the motor.
18. Rear door:
INSPECT POWER WINDOW MOTOR PTC OPERA-
TION
(a) Disconnect the connector from the rear door ECU.
(b) Connect the positive (+) lead from the battery to terminal
3 and the negative (±) lead to terminal 1 on the wire har-
ness side connector, and raise the window to full closed
position.
(c) Continue to apply voltage, check that there is a PTC op-
eration noise within approximately 4 to 90 seconds.

BE0HQ±11
I01364
Power Window Master Switch
Door Lock Manual SwitchIgnition Switch
Door Lock Assembly
 Door Lock Motor
 Door Unlock Detection
Switch
 Door Key Lock and
Unlock Switch
Door Lock Assembly
 Door Lock Motor
 Door Unlock Detection Switch
 Door Key Lock and Unlock Switch
Passenger Door Lock
Control Switch
BE±130
± BODY ELECTRICALPOWER DOOR LOCK CONTROL SYSTEM
2431 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
POWER DOOR LOCK CONTROL SYSTEM
LOCATION

BE0HR±04
I04116
I04132
I04133
42
± BODY ELECTRICALPOWER DOOR LOCK CONTROL SYSTEM
BE±131
2432 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. Master switch:
INSPECT DRIVER'S DOOR LOCK CONTROL SWITCH
CONTINUITY
Switch positionTester connectionSpecified condition
LOCK5 ± 16Continuity
OFF±No continuity
UNLOCK16 ± 17Continuity
If continuity is not as specified, replace the switch.
2. Master switch:
INSPECT DRIVER'S DOOR LOCK CONTROL SWITCH
CIRCUIT
(See page DI±866)
3. INSPECT PASSENGER'S DOOR LOCK CONTROL
SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
LOCK2 ± 3Continuity
OFF±No continuity
UNLOCK1 ± 2Continuity
If continuity is not as specified, replace the switch.
4. INSPECT PASSENGER'S DOOR LOCK CONTROL
SWITCH CIRCUIT
(See page DI±898)
5. INSPECT PASSENGER'S DOOR LOCK CONTROL
SWITCH ILLUMINATION
Connect the positive (+) lead from the battery to terminal 4 and
the negative (±) lead to terminal 2, and check that the indicator
light lights up.
If operation is not as specified, replace the switch.

I05185UNLOCK LOCK3 5 6 Front left side:
I05183
1 2 4
LOCK
UNLOCK Front right side
I04136
3 4 UNLOCK BE±132
± BODY ELECTRICALPOWER DOOR LOCK CONTROL SYSTEM
2433 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
6. Front left side door:
INSPECT DOOR KEY LOCK AND UNLOCK SWITCH
CONTINUITY
Switch positionTester connectionSpecified condition
LOCK3 ± 5Continuity
OFF±No continuity
UNLOCK3 ± 6Continuity
If continuity is not as specified, replace the switch.
7. Front left side door:
INSPECT DOOR KEY LOCK AND UNLOCK SWITCH
CIRCUIT
(See page DI±872)
8. Front right side door:
INSPECT DOOR KEY LOCK AND UNLOCK SWITCH
CONTINUITY
Switch positionTester connectionSpecified condition
LOCK2 ± 4Continuity
OFF±No continuity
UNLOCK1 ± 4Continuity
If continuity is not as specified, replace the switch.
9. Front right side door:
INSPECT DOOR KEY LOCK AND UNLOCK SWITCH
CIRCUIT
(See page DI±904)
10. Front door:
INSPECT DOOR UNLOCK DETECTION SWITCH CON-
TINUITY
Switch positionTester connectionSpecified condition
OFF (Door Lock set to
LOCK)±No continuity
ON (Door Lock set to
UNLOCK)3 ± 4Continuity
If continuity is not as specified, replace the switch.

I05184

3 412 UNLOCK
I04138
1 212
± BODY ELECTRICALPOWER DOOR LOCK CONTROL SYSTEM
BE±133
2434 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
11. Front door:
INSPECT DOOR UNLOCK DETECTION SWITCH CIR-
CUIT
Driver side: (See page DI±870)
Passenger side (See page DI±902)
12. Rear door:
INSPECT DOOR UNLOCK DETECTION SWITCH CON-
TINUITY
Switch positionTester connectionSpecified condition
OFF (Door Lock set to
LOCK)±No continuity
ON (Door Lock set to
UNLOCK)3 ± 4 (Left side)
1 ± 2 (right side)Continuity
If continuity is not as specified, replace the switch.
13. Rear door:
INSPECT DOOR UNLOCK DETECTION SWITCH CIR-
CUIT
Rear LH side (See page DI±932)
Rear RH side (See page DI±949)
14. Front left side door:
INSPECT DOOR LOCK MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
1 and the negative (±) lead to terminal 2, and check that
the door lock link moves to UNLOCK position.
(b) Reverse the polarity and check that the door lock link
moves to LOCK position.
If operation is not as specified, replace the door lock assembly.
15. Front left side door:
INSPECT DOOR LOCK MOTOR CIRCUIT
(See page DI±868)

I04139
65 56
I04140
1 221
I04141
43 34
BE±134
± BODY ELECTRICALPOWER DOOR LOCK CONTROL SYSTEM
2435 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
16. Front right side door:
INSPECT DOOR LOCK MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
5 and the negative (±) lead to terminal 6, and check that
the door lock link moves to UNLOCK position.
(b) Reverse the polarity and check that the door lock link
moves to LOCK position.
If operation is not as specified, replace the door lock assembly.
17. Front right side door:
INSPECT DOOR LOCK MOTOR CIRCUIT
(See page DI±900)
18. Rear left side door:
INSPECT DOOR LOCK MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
1 and the negative (±) lead to terminal 2, and check that
the door lock link moves to UNLOCK position.
(b) Reverse the polarity and check that the door lock link
moves to LOCK position.
If operation is not as specified, replace the door lock assembly.
19. Rear left side door:
INSPECT DOOR LOCK MOTOR CIRCUIT
(See page DI±930)
20. Rear right side door:
INSPECT DOOR LOCK MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
3 and the negative (±) lead to terminal 4, and check that
the door lock link moves to UNLOCK position.
(b) Reverse the polarity and check that the door lock link
moves to LOCK position.
If operation is not as specified, replace the door lock assembly.