2000 LEXUS GS400 remote control

± BODY ELECTRICALPOWER WINDOW CONTROL SYSTEM
BE±113
2414 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
2. REMOTE CONTROL OF ALL WINDOWS (EXCEPT DRIVER'S) DOES NOT FUNCTION WITH MAS-
TER SWITCH. (WINDOWS OPERATE NORMALLY WITH EACH OF MASTER SWITCHES.
TroubleSuspect Area (terminal No.)Parts name
All windows (except driver's) do not oper-
ate by remote control.
Fail±safe mode caused by leaving the master
switch ON or short circuit occurred in remote
control control switch of master switch.

Check continuity of master switch.

Master switch
Only passenger's door does not operate.
(UP, DOWN and AUTO DOWN do not op-
erate.)
Driver door control ECU DT1 terminal does not
output.

Driver door control ECU DT1 terminal (B3)

Master switch DT1 terminal (3)

Check wire harness between terminal DT1 (B3)
and DT1 (3)

Driver door control ECU

Master switch
Only passenger's door does not operate.
(Each operation does not operate.)Master switch faulty

Check continuity of master switch.
Only rear right side door does not operate.
(UP, DOWN and AUTO DOWN do not op-
erate.)
Driver door control ECU DT2 terminal does not
output.

Driver door control ECU DT2 terminal (B2)

Master switch DT2 terminal (11)

Check wire harness between terminal DT2 (B2)
and DT2 (11)

Driver door control ECU

Master switch
Only rear right side door does not operate.
(Either UP, DOWN or AUTO DOWN does
not operate.)Master switch faulty

Check continuity of master switch.
Only rear left side door does not operate.
(UP, DOWN and AUTO DOWN do not op-
erate.)
Driver door control ECU DT3 terminal does not
output.

Driver door control ECU DT3 terminal (B1)

Master switch DT3 terminal (14)

Check wire harness between terminal DT3 (B1)
and DT3 (14)

Driver door control ECU

Master switch
Only rear left side door does not operate.
(Either UP, DOWN or AUTO DOWN does
not operate.)Master switch faulty

Check continuity of master switch.
Driver door control ECU

Master switch
Only UP operation does not operate.
(All window (Except driver side) doors.)
Master switch ON SC2 terminal does not output.
Driver door control ECU SC2 terminal does not
input.

Master switch SC2 terminal (12)

Driver door control ECU SC2 terminal (B10)

Check wire harness between terminal SC2 (12)
and SC2 (B10)

Driver door control ECU

Master switch
Only UP operation does not operate.
(Only specific window does not operate.)Master switch faulty

Check continuity of master switch.
Only DOWN operation does not operate.
(All window (Except driver side) doors.)
Master switch ON SC1 terminal does not output.
Driver door control ECU SC1 terminal does not
input.

Master switch SC1 terminal (4)

Driver door control ECU SC1 terminal (B9)

Check wire harness between terminal SC1 (4)
and SC1 (B9)

Driver door control ECU

Master switch
Only DOWN operation does not operate.
(Only specific window does not operate.)Master switch faulty

Check continuity of master switch.

Remove the ignition key from key cylinder.
All the doors, engine hood and luggage
compartment door are closed and unlocked.
Any of doors is locked and unlocked by turns
3 times by the key or remote control.
Driver's side knob for door lock is locked and
unlocked 3 times.
Driver's side door is opened.
The system starts force lock at once after 2
sec.
Driver's side knob for door lock is unlocked.
Driver's side door is closed and opened 2
times
Driver's side knob for door lock is locked and
unlocked.
The system starts force lock at once after 2
secs.
PASSIVE MODE OFF
Driver's side door is closed and opened 4
times
Driver's side knob for door lock is locked and
unlocked.
The system starts force lock at once after 2
sec.
PASSIVE MODE ON
Within
30 sec.
Within
20 sec.
HINT:

Initial mode is PASSIVE MODE OFF.

If there is a different signal in the middle of changing. It is invalid.
Input to the vehicle
Output from the vehicle BE±148
± BODY ELECTRICALTHEFT DETERRENT SYSTEM
2449 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
6. CHANGING METHOD OF PASSIVE MODE
(ON or OFF)

BE0GN±01
BE±152
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
2453 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
PRE±CHECK
Make the vehicle in the initialized condition:
The initialized condition is the condition when the following conditions are satisfied.
(1) Key plate has not been inserted in the ignition key cylinder.
(2) All the doors are closed. (Door warning light is OFF.)
(3) All the doors are locked.
(4) Wireless door lock control switch (Buzzer switch) is ON.
Under the standard operation, when repeating UNLOCK and LOCK switch 3 times or more alternately, check the
UNLOCK±LOCK operation from 3rd time onward.

Following procedures are standard operation.
(1) Keep about 1 M away to the right direction from the outside handle of a driver's seat.
(2) Face the transmitter toward the vehicle and press one of transmitter switches for about 1 sec.


As of the security function, even the wireless function is normal, there may be the case that only UNLOCK opera-
tion will not work.

As of the body customize function, if ºoperation twiceº has been set using LEXUS hand±held tester, only driver's
seat is unlocked by unlock operation performed once.
Normal


Operative distance may differ according to
an operator, the way of holding the transmitter
or position.

Because weak electric wave is used, when
there is strong wave or noise in the used
frequency ,operation distance might be
shortened.
No Yes
Only wireless function (Remote control) will not operate.
(If a new transmitter or a transmitter of the same type that works properly with the vehicle is not available.)
Check when pressing UNLOCK switch
and LOCK switch under standard
operation, that the transmitter LED
lights up once more.
NoYe s
Basic function check:
Transmitter LED inspection:

BE0GO±04
I04149
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
BE±157
2458 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. INSPECT WIRELESS DOOR LOCK TRANSMITTER
OPERATION
HINT:
Refer to ºWireless door lock control transmitter battery replace-
mentº on page BE±161.
(a) Using a screwdriver, remove the screw and cover.
(b) Remove the battery (lithium battery).
(c) Install a new or normal battery (lithium battery).
HINT:
When a new or normal battery can not be obtained, connect 2
new 1.5 V batteries in series, connect the battery (+) to the bat-
tery receptacle side terminal and battery (±) to the bottom termi-
nal, then apply 3 V voltage to the transmitter.
(d) In the location where is approx. 1 M away from driver's
outside handle in the right direction, face the key plate of
the transmitter to the vehicle, and check the transmitter
operation when pressing transmission switch on the side
of the transmitter body.
Standard:

Remote control of vehicle door lock can be operated.

LED lights up more than once.
HINT:

The minimum operation distance differs according to op-
erator, the way of holding the transmitter, and location.

As weak wave is used, operation distance might be short-
ened when noise is detected in strong wave or used fre-
quency.
(e) Install the battery (lithium battery).
(f) Install a cover so that O±ring is not distorted or slipped off.
(g) Using a screwdriver, tighten the screw.

BE±10
± BODY ELECTRICALTROUBLESHOOTING
2311 Author: Date:
2000 LEXUS GS300/GS400 (RM718U) Malfunction indicator light does not light up.
1. Bulb
2. Meter Circuit Plate
3. Wire Harness
4. ECM (2JZ±GE)
5. ECM (1UZ±FE)±
BE±92
±
DI±1
DI±156
Fuel level warning light does not light up.
1. Bulb
2. Fuel level warning sensor
3. Meter Circuit Plate
4. Wire Harness±
±
BE±92
±
ELECTRIC TENSION REDUCER SYSTEM
SymptomSuspect AreaSee page
Tension Reducer does not operate.
(Driver's and Passenger's)1. ECU±IG Fuse
2. Wire HarnessBE±21
±
Tension Reducer does not operate.
(Only one side)1. Buckle Switch
2. Tension Reducer Solenoid
3. Wire HarnessBE±92
BE±92
±
DEFOGGER SYSTEM
This system uses the multiplex communication system, so check diagnosis system of the multiplex commu-
nication system before you proceed with troubleshooting.
SymptomSuspect AreaSee page
Rear window defogger does not operate.
1. HTR Fuse
2. DEF M±Fuse
3. Defogger Relay Circuit
4. Defogger Switch (in A/C Panel Switch)
5. Defogger Wire
6. Wire Harness
7. Body No.1 ECUBE±21
BE±21
DI±812
BE±108
BE±108
±
DI±776
Mirror defogger does not operate.
1. MIR±HTR Fuse (Passenger SIde J/B)
2. Mirror Heater Relay
3. Mirror Heater
4. Wire HarnessBE±21
BE±108
BE±108
±
POWER WINDOW CONTROL SYSTEM
This system uses the multiplex communication system, so check diagnosis system of the multiplex commu-
nication system before you proceed with troubleshooting.
SymptomSuspect AreaSee page
All the power windows do not operate.
(Power Door Lock System is normal.)
1. PWS terminal circuit
2. Power Window Master Switch
3. Wire Harness
4. Driver Door ECU
5. Body No.1 ECUDI±818
BE±117
±
DI±856
DI±776
Only the driver's window does not operate.
1. Power Window Master Switch
2. Power WIndow Switch
3. Power Window Motor
4. Wire HarnessBE±117
BE±117
BE±117
±
ºWindow lock functionº does not operate.1. Power Window Master SwitchBE±117
Window does not operate with power window master switch.
(Manual or Automatic operation can be performed.)TROUBLESHOOTING NO.1BE±111
Remote control of all windows (Except driver's) does not functions
with master switch.
(Windows operate normally with each of master switch.)
TROUBLESHOOTING NO.2BE±111