battery LEXUS GS400 2000 Service Owner's Manual

I05116
12
3
6
I05117
12
3
6
I05118
1
2
3
5
I05119
1
2
3
5
I05120
1
2
3
5
BE±126
± BODY ELECTRICALPOWER WINDOW CONTROL SYSTEM
2427 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
28. Rear RH side door (window down):
INSPECT JAM PROTECTION LIMIT SWITCH OPERA-
TION
(a) Connect the positive (+) lead from the ohmmeter to termi-
nal 2 and the negative (±) lead to terminal 6.
(b) Connect the positive (+) lead from the battery to terminal
1 and the negative (±) lead to terminal 3.
(c) Check that the continuity exists when the window goes
down.
(d) Check that the no continuity exists when the window is in
the fully opened position.
If operation is not as specified, replace the motor.
NOTICE:
If connecting the wire harness wrongly, the sensor might
be damaged so caution is necessary.
29. Driver 's door:
INSPECT JAM PROTECTION PULSE SWITCH OP-
ERATION
(a) Connect the positive (+) lead from the TOYOTA electrical
tester to terminal 3 and the negative (±) lead to terminal
5.
(b) Connect the positive (+) lead from the battery to terminal
1 and the negative (±) lead to terminal 2.
(c) Check that pulse is generated during the motor running.
(d) Reverse the polarity and check that pulse is generated.
If operation is not as specified, replace the motor.
NOTICE:
If connecting the wire harness wrongly, the sensor might
be damaged so caution is necessary.
30. Driver 's door:
INSPECT JAM PROTECTION PULSE SWITCH CIR-
CUIT
(See page DI±880)
31. Front passenger's door:
INSPECT JAM PROTECTION PULSE SWITCH OP-
ERATION
(a) Connect the positive (+) lead from the TOYOTA electrical
tester to terminal 3 and the negative (±) lead to terminal
5.
(b) Connect the positive (+) lead from the battery to terminal
2 and the negative (±) lead to terminal 1.
(c) Check that pulse is generated during the motor running.

I05121
1
2
3
5
I05122
13
67
I05123
13
67
I05124
13
67
I05125
13
67
± BODY ELECTRICALPOWER WINDOW CONTROL SYSTEM
BE±127
2428 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(d) Reverse the polarity and check that pulse is generated.
If operation is not as specified, replace the motor.
NOTICE:
If connecting the wire harness wrongly, the sensor might
be damaged so caution is necessary.
32. Front passenger's door:
INSPECT JAM PROTECTION PULSE SWITCH CIR-
CUIT
(See page DI±914)
33. Rear LH side door:
INSPECT JAM PROTECTION PULSE SWITCH
(a) Connect the positive (+) lead from the TOYOTA electrical
tester to terminal 3 and the negative (±) lead to terminal
5.
(b) Connect the positive (+) lead from the battery to terminal
2 and the negative (±) lead to terminal 1.
(c) Check that pulse is generated during the motor running.
(d) Reverse the polarity and check that pulse is generated.
If operation is not as specified, replace the motor.
NOTICE:
If connecting the wire harness wrongly, the sensor might
be damaged so caution is necessary.
34. Rear RH side door:
INSPECT JAM PROTECTION PULSE SWITCH
(a) Connect the positive (+) lead from the TOYOTA electrical
tester to terminal 3 and the negative (±) lead to terminal
5.
(b) Connect the positive (+) lead from the battery to terminal
1 and the negative (±) lead to terminal 2.
(c) Check that pulse is generated during the motor running.
(d) Reverse the polarity and check that pulse is generated.
If operation is not as specified, replace the motor.
NOTICE:
If connecting the wire harness wrongly, the sensor might
be damaged so caution is necessary.

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.

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.

I04142
21
UNLOCK
I04275
21
LOCK
I04143
5 6
UNLOCK
I04276
5 6
LOCK
± BODY ELECTRICALPOWER DOOR LOCK CONTROL SYSTEM
BE±135
2436 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
21. Rear right side door:
INSPECT DOOR LOCK MOTOR CIRCUIT
(See page DI±947)
22. Front left side door:
INSPECT PTC THERMISTOR OPERATION (Using an
ammeter)
(a) Connect the negative (±) lead from the battery to terminal
2.
(b) Connect the positive (+) lead from the ammeter to termi-
nal 1 and the negative (±) lead to battery negative (±) ter-
minal, and check that the current changes from approxi-
mately 3.2 A to less than 0.5 A within 20 to 70 seconds.
(c) Disconnect the leads from terminals.
(d) 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 door lock moves to
the LOCK position.
If operation is not as specified, replace the door lock assembly.
23. Front right side door:
INSPECT PTC THERMISTOR OPERATION (Using an
ammeter)
(a) Connect the negative (±) lead from the battery to terminal
6.
(b) Connect the positive (+) lead from the ammeter to termi-
nal 5 and the negative (±) lead to battery negative (±) ter-
minal, and check that the current changes from approxi-
mately 3.2 A to less than 0.5 A within 20 to 70 seconds.
(c) Disconnect the leads from terminals.
(d) Approximately 60 seconds later, connect the positive (+)
lead from the battery to terminal 6 and the negative (±)
lead to terminal 5, and check that the door lock moves to
the LOCK position.
If operation is not as specified, replace the door lock assembly.

I05179
21
UNLOCK
I05180
21
LOCK
I05181
43
UNLOCK
I05182
43
LOCK
I04279
21
UNLOCK BE±136
± BODY ELECTRICALPOWER DOOR LOCK CONTROL SYSTEM
2437 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
24. Rear left side door:
INSPECT PTC THERMISTOR OPERATION (Using an
ammeter)
(a) Connect the negative (±) lead from the battery to terminal
2.
(b) Connect the positive (+) lead from the ammeter to termi-
nal 1 and the negative (±) lead to battery negative (±) ter-
minal, and check that the current changes from approxi-
mately 3.2 A to less than 0.5 A within 20 to 70 seconds.
(c) Disconnect the leads from terminals.
(d) 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 door lock moves to
the LOCK position.
If operation is not as specified, replace the door lock assembly.
25. Rear right side door:
INSPECT PTC THERMISTOR OPERATION (Using an
ammeter)
(a) Connect the negative (±) lead from the battery to terminal
4.
(b) Connect the positive (+) lead from the ammeter to termi-
nal 3 and the negative (±) lead to battery negative (±) ter-
minal, and check that the current changes from approxi-
mately 3.2 A to less than 0.5 A within 20 to 70 seconds.
(c) Disconnect the leads from terminals.
(d) Approximately 60 seconds later, connect the positive (+)
lead from the battery to terminal 4 and the negative (±)
lead to terminal 3, and check that the door lock moves to
the LOCK position.
If operation is not as specified, replace the door lock assembly.
26. Front left side door:
INSPECT PTC THERMISTOR OPERATION (Using an
ammeter with a current±measuring probe)
(a) Connect the positive (+) lead from the battery to terminal
1 and the negative (±) lead to terminal 2.
(b) Attach a current±measuring probe to either the positive
(+) lead or the negative (±) lead, and check that the cur-
rent changes from approximately 3.2 A to less than 0.5 A
within 20 to 70 seconds.

I04275
21
LOCK
I04280
5 6
UNLOCK
I04276
5 6
LOCK
I05178
21
UNLOCK
I05175
21
LOCK
± BODY ELECTRICALPOWER DOOR LOCK CONTROL SYSTEM
BE±137
2438 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(c) Disconnect the leads from terminals.
(d) Approximately 60 seconds later, reverse the polarity, and
check that the door lock moves to the LOCK position.
If operation is not as specified, replace the door lock assembly.
27. Front right side door:
INSPECT PTC THERMISTOR OPERATION (Using an
ammeter with a current±measuring probe)
(a) Connect the positive (+) lead from the battery to terminal
5 and the negative (±) lead to terminal 6.
(b) Attach a current±measuring probe to either the positive
(+) lead or the negative (±) lead, and check that the cur-
rent changes from approximately 3.2 A to less than 0.5 A
within 20 to 70 seconds.
(c) Disconnect the leads from terminals.
(d) Approximately 60 seconds later, reverse the polarity, and
check that the door lock moves to the LOCK position.
If operation is not as specified, replace the door lock assembly.
28. Rear left side door:
INSPECT PTC THERMISTOR OPERATION (Using an
ammeter with a current±measuring probe)
(a) Connect the positive (+) lead from the battery to terminal
1 and the negative (±) lead to terminal 2.
(b) Attach a current±measuring probe to either the positive
(+) lead or the negative (±) lead, and check that the cur-
rent changes from approximately 3.2 A to less than 0.5 A
within 20 to 70 seconds.
(c) Disconnect the leads from terminals.
(d) Approximately 60 seconds later, reverse the polarity, and
check that the door lock moves to the LOCK position.
If operation is not as specified, replace the door lock assembly.

I05176
43
UNLOCK
I05177
43
LOCK
I04020
BE±138
± BODY ELECTRICALPOWER DOOR LOCK CONTROL SYSTEM
2439 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
29. Rear right side door:
INSPECT PTC THERMISTOR OPERATION (Using an
ammeter with a current±measuring probe)
(a) Connect the positive (+) lead from the battery to terminal
3 and the negative (±) lead to terminal 4.
(b) Attach a current±measuring probe to either the positive
(+) lead or the negative (±) lead, and check that the cur-
rent changes from approximately 3.2 A to less than 0.5 A
within 20 to 70 seconds.
(c) Disconnect the leads from terminals.
(d) Approximately 60 seconds later, reverse the polarity, and
check that the door lock moves to the LOCK position.
If operation is not as specified, replace the door lock assembly.
30. INSPECT LUGGAGE COMPARTMENT DOOR OPEN-
ER MOTOR OPERATION
Connect positive (+) lead to the terminal 1 and negative (±) lead
to the opener motor body, and check that the motor operates.
31. INSPECT LUGGAGE COMPARTMENT DOOR OPEN-
ER MOTOR CIRCUIT
(See page DI±802)

DI3CO±10
± BODY ELECTRICALTHEFT DETERRENT SYSTEM
BE±141
2442 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
PRE±CHECK
1. THEFT DETERRENT SYSTEM
When the system is set to the theft deterrent mode and any of
the following conditions are met, the system sounds the horns
and flashes the headlights and the taillights for approx. 1 min-
ute.
At the same time the system locks all doors (If all door are not
locked at once, the system repeats door locking operation ev-
ery 0.55 seconds during the one minute alarm time).
There are 2 modes in this system, which are active mode and
passive mode.
All initial setting are performed in active mode. It can be
switched to passive mode by specified operation. (See step 4.
CHANGING METHOD OF PASSIVE MODE)
Condition:
Any of the doors (Including the engine hood and luggage
compartment door) is unlocked or opened without the
key. *1
The battery terminal is disconnected and reconnected.
The system receives panic signal from remote keyless
entry. *2
*1: Only active arming mode.
*2: When the ignition key is not inserted in the key cylin-
der.
There are 4 conditions in this system which are disarming
condition, disarming preparation condition, arming condition
and alarming condition.
(a) Disarming condition:
(1) When a user is near the vehicle.
(2) When the alarming function does not operate.
(3) When theft deterrent function is not performed.
(b) Disarming preparation condition:
(1) Time from a user locks a door to be leaves the ve-
hicle.
(2) Time until transferring to disarming condition.
(3) Theft deterrent function is not performed.
(c) Arming condition:
(1) When a user leaves the vehicle completely.
(2) When theft deterrent function is possible.