2000 LEXUS GS400 sensor

I04131
3 within
60 seconds
1
I05102
1
2
4
5
I05103
1
2
4
5
I05104
1
2
4
5
I05105
1
2
4
5
± BODY ELECTRICALPOWER WINDOW CONTROL SYSTEM
BE±123
2424 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(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.
19. Driver 's door (window up):
INSPECT JAM PROTECTION LIMIT SWITCH OPERA-
TION
(a) Connect the positive (+) lead from the ohmmeter to termi-
nal 4 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 the continuity exists when the window goes
up.
(d) Check that the no continuity exists when the window is in
the fully closed 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.
20. Driver 's door (window down):
INSPECT JAM PROTECTION LIMIT SWITCH OPERA-
TION
(a) Connect the positive (+) lead from the ohmmeter to termi-
nal 4 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 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.
21. Driver 's Door:
INSPECT JAM PROTECTION LIMIT SWITCH CIRCUIT
(See page DI±878)

I05106
1
2
4
5
I05107
1
2
4
5
I05108
1
2
4
5
I05109
1
2
4
5
I05110
12
3
6
BE±124
± BODY ELECTRICALPOWER WINDOW CONTROL SYSTEM
2425 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
22. Front passenger's door (window up):
INSPECT JAM PROTECTION LIMIT SWITCH OPERA-
TION
(a) Connect the positive (+) lead from the ohmmeter to termi-
nal 4 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 the continuity exists when the window goes
up.
(d) Check that the no continuity exists when the window is in
the fully closed 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.
23. Front passenger's door (window down):
INSPECT JAM PROTECTION LIMIT SWITCH OPERA-
TION
(a) Connect the positive (+) lead from the ohmmeter to termi-
nal 4 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 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.
24. Passenger 's Door:
INSPECT JAM PROTECTION LIMIT SWITCH CIRCUIT
(See page DI±912)
25. Rear LH side door (window up):
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
3 and the negative (±) lead to terminal 1.
(c) Check that the continuity exists when the window goes
up.

I05111
12
3
6
I05112
12
3
6
I05113
12
3
6
I05114
12
3
6
I05115
12
3
6
± BODY ELECTRICALPOWER WINDOW CONTROL SYSTEM
BE±125
2426 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(d) Check that the no continuity exists when the window is in
the fully closed 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.
26. Rear LH 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.
27. Rear RH side door (window up):
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
3 and the negative (±) lead to terminal 1.
(c) Check that the continuity exists when the window goes
up.
(d) Check that the no continuity exists when the window is in
the fully closed 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.

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.

I04169
12
I04170
62
I04171
62
I04172
6 28
9
11
I04173
6 28
9
11
BE±178
± BODY ELECTRICALPOWER MIRROR CONTROL SYSTEM
2479 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(b) Reverse the polarity, and check that the mirror turns to the
right side.
(c) Connect the positive (+) lead from the battery to terminal
6 and the negative (±) lead to terminal 2, and check that
the mirror turns upward.
(d) Reverse the polarity, and check that the mirror turns
downward.
If operation is not as specified, replace the mirror assembly.
9. w/ Driving position memory:
INSPECT MIRROR MOTOR CIRCUIT
Left side: (See page DI±882)
Right side: (See page DI±916)
10. w/ Driving position memory only:
INSPECT MIRROR POSITION SENSORS OPERATION
HINT:
Strip off the vinyl tape of the connector and remove terminals
1, 2, 6, 8, 9, 10 and 11 from the connector housing.
(a) Connect a series of three 1.5 V dry cell batteries.
(b) Connect the positive (+) lead from the dry cell batteries to
terminal 8 and the negative (±) lead to terminal 11.
(c) Connect the positive (+) lead from the voltmeter to termi-
nal 9 and the negative (±) lead to terminal 11.
(d) Apply battery positive voltage to terminals 2 and 6, then
check that the voltage gradually changes according to the
table below while the mirror moves between the upper-
most position and lowermost position.
Mirror
positionLowermostMirror
positionUppermost
Voltage2.8 ± 5.0Changes
gradually0 ± 1.8
If voltage value is not as specified, replace the motor assembly.

I04174
2
18
10
11
I04175
2
18
10
11
I04176
SW1
SW2
SET Switch
I07732
When folded front
At drive
position
At retract position(a)
(b)
(c)
(d)
(e)
± BODY ELECTRICALPOWER MIRROR CONTROL SYSTEM
BE±179
2480 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(e) Disconnect the 4 leads of the battery and voltmeter.
(f) Connect the positive (+) lead from the voltmeter to termi-
nal 10 and negative (±) lead to terminal 11.
(g) Apply battery positive voltage to terminals 1 and 2, then
inspect that the voltage gradually changes according to
the table below while the mirror moves between the left±
most position and right±most position.
Mirror
positionLeft±mostMirror
positionRight±most
Voltage
LEFT2.8 ± 5.0Changes
gradually0 ± 1.8
Voltage
RIGHT0 ± 1.8Changes
gradually2.8 ±5.0
If voltage value is not as specified, replace the motor assembly.
11. w/ Driving position memory only:
INSPECT MIRROR POSITION SENSORS CIRCUIT
Left side: (See page DI±884)
Right side (See page DI±918)
12. INSPECT DRIVING POSITION MEMORY AND RE-
TURN SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
SET switch ON1 ± 7Continuity
Return SW1 ON1 ± 3Continuity
Return SW2 ON1 ± 5Continuity
If continuity is not as specified, replace the switch.
13. INSPECT DRIVING POSITION MEMORY AND RE-
TURN SWITCH CIRCUIT (See page DI±887)
14. TAIWAN models:
INSPECT ELECTRICAL RETRACT MOTOR OPERA-
TION
(a) When folded front position:
(1) Connect the positive (+) lead from the battery to ter-
minal 1 and negative (±) lead to terminal 2, check
that the mirror operates at retract position.
(2) Reverse the polarity, check that the mirror does not
operate.
If operation is not as specified, replace the mirror assembly.
(b) Between folded front position and driving position:
(1) Connect the positive (+) lead from the battery to ter-
minal 1 and negative (±) lead to terminal 2, check
that the mirror operates at retract position.
(2) Reverse the polarity, check that the mirror operate
at folded front position.
If operation is not as specified, replace the mirror assembly.

BE0HD±04
I05186
ºBrightº ºDarkº1
2
3
4
Black coloured tape
I04048
Wire Harnes Side BE±182
± BODY ELECTRICALELECTRO CHROMIC MIRROR SYSTEM
2483 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. INSPECT ELECTRO CHROMIC INNER MIRROR OP-
ERATION
(a) Connect the positive (+) lead from the battery to terminal
1 and the negative (±) lead to terminal 4.
(b) Connect the positive (+) lead from the voltmeter to termi-
nal 2 and the negative (±) lead to terminal 3.
(c) Attach a black coloured tape to forward sensor to prevent
it from sensing.
(d) When the mode is turned to AUTO, check that indicator
light lights up.
(e) Light up the mirror with an electric light, and check that
there is battery positive voltage and mirror surface
changes ºbrightº to ºdarkº.
If operation is not as specified, replace the inner mirror.
2. INSPECT ELECTRO CHROMIC INNER MIRROR CIR-
CUIT
Disconnect the connector from the mirror and inspect the con-
nector on the wire harness side, as shown.
Tester connectionConditionSpecified condition
4 ± GroundConstantContinuity
1 ± GroundIgnition switch LOCK or ACCNo voltage
1 ± GroundIgnition switch ONBattery positive voltage
If circuit is not as specified, inspect the circuits connected to
other parts.