2000 LEXUS GS400 fog light bulb

BE±6
± BODY ELECTRICALTROUBLESHOOTING
2307 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
HEADLIGHT BEAM LEVEL CONTROL SYSTEM
SymptomSuspect AreaSee page
Beam axis is not controlled. (It is not initialized.)
Headlight Beam Level Control System does not operate.
1. ECU±IG Fuse
2. Headight Beam Level Control Actuator
3. Headlight Beam Level Control ECU
4. Wire Harness SideBE±21
BE±50
BE±50
±
Beam axis is not controlled. (It is initialized.)
Headlight Beam Level Control System does not operate.1. Height Control Sensor
2. Headlight Beam Level Control ECU
3. Wire Harness SideBE±50
BE±50
±
Controlled angle of head light is unusual.
(The angle is controlled.)
1. Height Control Sensor
2. Headlight Beam Level Control ECU
3. Headlights
4. Wire Harness Side±
BE±50
BE±3
±
Beam axis position is not stable during driving.
1. ABS System
2. Headlights
3. Wire HarnessDI±387
BE±3
±
FOG LIGHT 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
Fog light does not light up with light control SW HEAD
(Headlight is normal.)
1. FOG Fuse
2. Fog Light Relay
3. Fog Light Switch
4. Wire Harness
5. Body No.2 ECUBE±21
BE±53
BE±53
±
±
Fog light does not light up with light control SW HEAD
(Headlight does not light).1.*1 Other Parts
2. Wire Harness±
±
Only one light does not light up.1. Bulb
2. Wire Harness±
±
*1: Inspect Headlight System
TURN SIGNAL AND HAZARD WARNING 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
ºHazardº and ºTurnº do not light up.
1. GAUGE Fuse
2. TURN HAZ Fuse
3. Ignitioin Switch
4. Turn Signal Flasher Relay
5. Wire HarnessBE±21
BE±21
BE±31
BE±56
±
Hazard warning light does not light up.
(Turn is normal)1. Hazard Warning Switch
2. Wire HarnessBE±56
±
Turn signal does not light up.
(Hazard is normal)1. Turn Signal Switch
2. Wire HarnessBE±56
±
Turn signal does not light up in one direction.1. Turn Signal Switch
2. Wire HarnessBE±56
±
Only one bulb does not light up.1. Bulb
2. Wire Harness±
±

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

PP0O2±02
± PREPARATIONBODY ELECTRICAL
PP±93
145 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
EQUIPMENT
Voltmeter
Ammeter
Ohmmeter
Test lead
ThermometerEngine coolant temperature sender gauge, Engine oil level warn-
ing switch, Seat heater
SyphonBrake fluid level warning switch
Oil bathEngine oil level warning switch
Bulb (1.4 W)Defogger switch
Bulb (3.4 W)Fuel sender gauge, Engine coolant temperature receiver gauge,
Seat belt warning relay
Dry cell batteryFuel sender gauge, Power mirror
Heat lightSeat heater
Hexagon wrench (6 mm)Power seat
Torque wrench
Clip removerFor removing cowl louver
Masking tapeRear window defogger wire
Tin foilRear window defogger wire