All Wiring Diagrams for Lexus ES 300 1998

AIR CONDITIONING

Air Conditioning Wiring Diagrams (1 of 2) for Lexus ES 300 1998

List of elements for Air Conditioning Wiring Diagrams (1 of 2) for Lexus ES 300 1998:

(cowl wire harness, top right side of dash)
(engine room main wire harness, left side of engine compartment)
A/c
A/c ambient temperature sensor (behind right rear side of front bumper)
A/c control assembly
A/c dual pressure switch (right rear side of front bumper)
A/c room temperature sensor (behind center of dash)
A/c solar sensor (top left side of dash)
A/c thermister (behind right side of dash)
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A29
Ac1
Act
Aif
Air
Air inlet control servo motor (top right side of dash)
Air mix control servo motor (left side of dash, right of steering column)
Amc
Amh
Anti-theft system
B/l
B10
B11
B12
B13
B14
B15
B16
Blw
D13
D14
D25
D27
Def
Defogger system
E10
Ecu-b fuse 10a
Engine control module (behind right side of dash)
Engine room j/b (left side of engine compartment)
F/d
Face
Foot
G108 (left radiator side support)
G206 (left dash panel brace)
Gnd
Hot at all times
I10
Ig+
Ign
Illum
Instrument cluster system
Instrument panel j/b (lower finish panel)
Interior lights system
J/c 15
J/c 18 & 19 (behind right side of dash)
J/c 20 & 21 (top right side of dash)
J/c 28 & 29 (behind right side of dash)
J/c 30 (behind right side of dash)
Lock
Mgcr
Pnk
Psw
Rdfg
Red
Secu
Spd
Tach
Tam
Telephone transceiver & speaker relay (left rear side of luggage compartment)
Teli
Thwo
Tpi
Tw2
V10

Air Conditioning Wiring Diagrams (2 of 2) for Lexus ES 300 1998

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List of elements for Air Conditioning Wiring Diagrams (2 of 2) for Lexus ES 300 1998:

(cowl wire harness, behind combination meter)
(left dash panel brace) g206
A/c blower motor linear controller (behind left side of dash)
A/c condenser fan motor
A/c diode (left rear side of engine compartment)
A/c magnetic clutch & lock sensor (right front of engine compartment)
A/c single pressure switch (right rear side of front bumper)
Air vent mode control servo motor (behind left side of dash)
Alt fusible link 100a
B/l
Blower motor (behind right side of dash)
Blower resistor (left side of dash)
Cds fuse 30a
Control circuit
Def
Ecu-ig fuse 15a
Engine main relay
Engine room j/b (left side of engine compart- ment)
Engine room j/b (left side of engine compartment)
Engine room r/b (left side of engine compartment)
F/d
Face
Fan n0.1 relay
Fan n0.2 relay
Fan n0.3 relay
Foot
Fusible link block (left side of engine compartment)
G108 (left radiator side support)
Gnd
Heater fuse 10a
Hot at all times
Hot in on or start
Htr fusible link 50a
Htr relay
I4 (a/c sub wire harness, behind left side of dash)
Instrument panel j/b (lower finish panel)
J/c 20 & 21 (top right side of dash)
J13
Mg clt relay
Position switches
Radiator fan motor
Rdi fuse 30a
Red
Water temp. switch 1 (left rear side of front bumper)
Water temp. switch 2 (left front side of engine)

ANTI-LOCK BRAKES

Anti-lock Brake Wiring Diagrams, with Traction Control for Lexus ES 300 1998

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List of elements for Anti-lock Brake Wiring Diagrams, with Traction Control for Lexus ES 300 1998:

(a: a8)
(b: a7)
A10
A11
A12
A19
A20
A21
Abs
Abs & traction actuator (in right front of engine compt)
Abs & traction ecu (behind right side of dash)
Abs fuse 60a
Abs ind
Abs motor relay
Abs sol relay
Ast
C10
Combination meter
Csw
D/g
Data link connector 1 (near right front corner of engine)
Data link connector 2 (under left side of dash)
Ecu-ig fuse 15a
Efi+
Efi-
Electronic suspension system
Engine control module (behind right side of dash)
Engine room relay block 3 (in right front of engine compt, on radiator upper support)
Fl+
Fl-
Fr+
Fr-
Fro
G109 (right radiator support)
G206
Gauge fuse 10a
Gnd1
Gnd2
Gnd3
Hot at all times
Hot in on or start
Ig1
Ind
Instrument panel junction block (behind left side of dash)
Instrument panel junction block (behind left side of dash, above kick panel)
J/c 1 (left side of dash)
J/c 15 (under left side of radio)
J/c 27 (right side of dash)
J/c 28, j/c 29 (right side of dash)
J/c 3 (left side of dash)
J/c 30 (right side of dash)
J/c 4 (left side of dash)
J/c 8, j/c 9 (behind left side of dash)
J28
J29
Left front abs speed sensor
Left rear abs speed sensor
Neo
Red
Right front abs speed sensor
Right rear abs speed sensor
Rl+
Rl-
Rr+
Rr-
Rro
Sflh
Sflr
Sfrh
Sfrr
Slip ind
Smc1
Smc2
Src1
Src2
Srlh
Srlr
Srrh
Srrr
Stop fuse 15a
Stp
Trac off ind
Trac off switch
Trc
Trc+
Trc-

Anti-lock Brake Wiring Diagrams, without Traction Control for Lexus ES 300 1998

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List of elements for Anti-lock Brake Wiring Diagrams, without Traction Control for Lexus ES 300 1998:

(a: a6) (b: a5)
(in right front of engine compt) abs actuator
A22
A23
Abs
Abs ecu (behind right side of dash)
Abs fuse 60a
Abs ind
Abs motor relay
Abs sol relay
Ast
C10
Combination meter
D/g
Data link connector 1 (near right front corner of engine)
Data link connector 2 (under left side of dash)
Ecu-ig fuse 15a
Electronic suspension system
Engine room relay block 3 (in right front of engine compt, on radiator upper support)
Fl+
Fl-
Fr+
Fr-
Fro
G109 (right radiator support)
Gauge fuse 10a
Gnd
Gnd2
Hot at all times
Hot in on or start
Ig1
Instrument panel junction block (behind left side of dash, above kick panel)
J/c 1 (left kick panel)
J/c 27 (right side of dash)
J/c 3 (left side of dash)
J/c 30 (right side of dash)
J/c 4 (left side of dash)
Left front abs speed sensor
Left rear abs speed sensor
Red
Right front abs speed sensor
Right rear abs speed sensor
Rl+
Rl-
Rr+
Rr-
Rro
Sflh
Sflr
Sfrh
Sfrr
Srlh
Srlr
Srrh
Srrr
Stop fuse 15a
Stop light switch (on bracket, above brake pedal)
Stp

ANTI-THEFT

Anti-theft Wiring Diagram for Lexus ES 300 1998

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List of elements for Anti-theft Wiring Diagram for Lexus ES 300 1998:

(behind left headlight)
(left side of dash) junction connector j10/j11
(right kick panel) junction connector j/c 34
+b1
+b2
A/c control assembly
Cty
Diode (behind left kick panel)
Diode (behind right side of dash, above kick panel)
Dome fuse 7.5a
Door fuse 25a
Door locks system
Dswd
Dswh
Dswl
Dswp
E (grd)
Ecu-ig fuse 15a
Engine controls system
Engine hood courtesy switch
Engine room junction block (on left side of engine compt)
Exterior lights system
G106
G200 (left kick panel)
G202 (left instrument panel brace)
G407 (center rear of trunk)
Gnd
Head
Headlights system
Horn
Horn fuse 10a
Horns system
Hot at all times
Hot in run or start
Ind
Instrument panel junction block (behind left side of dash, above kick panel)
Integration relay
J10
J11
J12
J34
J35
Junction connector j10/j11 (left side of dash)
Junction connector j16 (center of dash)
Junction connector j34/j35 (right end of dash)
Junction connector j5/j6 (left side of dash)
Ksw
Left front door courtesy switch
Left rear door courtesy switch
Lswd
Lswp
Lswr
Lug
Luggage compartment key unlock switch
Luggage compartment light switch and door opener motor
Red
Right front door courtesy switch
Right rear door courtesy switch
S12
Secu
Tail
Theft deterrent ecu (under center of dash, forward of center console)
Theft deterrent horn (in right rear corner of engine compt)
Trunk, tailgate fuel doors system
Trunk, tailgate, fuel doors system
Tsw
Ul2
Ul3
Warning systems

COMPUTER DATA LINES

Computer Data Lines for Lexus ES 300 1998

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List of elements for Computer Data Lines for Lexus ES 300 1998:

(left kick panel) j/c 2
(left side of dash) j/c 8, j/c 9
(right side of dash) j/c 24
(right side of firewall) g123
15a
7.5a
A/d
A19
A20
A22
A29
Abs
Abs & traction
Abs ecu/ abs & traction ecu (behind right side of dash)
Abs sol relay (r/b 3, near right radiator support)
Absorber control ecu (behind left side of dash)
Airbag sensor assembly (behind center of dash, behind center console)
Bat
Cruise control ecu (behind left side of dash)
D/g
Data link connector 1 (right rear of eng compt)
Data link connector 2 (under left side of dash)
Data link connector 3 (under left side of dash)
E11
Efi fuse
Efi relay
Engine control module (behind right side of dash)
G123 right side of firewall)
G206 (on left dash center support)
Hot at all times
I14
J/b 2 (left front engine compt)
J/c 1 (left kick panel)
J/c 1 (left side of dash)
J/c 15
J/c 23 (right side of dash)
J/c 28, j/c 29 (right side of dash)
J/c 3 (left kick panel)
J/c 30 (right side of dash)
J/c 8, j/c 9 (behind left side of dash)
J28
J29
Obd fuse
Pnk
Sil
Te1
Tem
Trc
Yem

COOLING FAN

Cooling Fan Wiring Diagram for Lexus ES 300 1998

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List of elements for Cooling Fan Wiring Diagram for Lexus ES 300 1998:

(left radiator side support)
(on left side of engine compt) engine room junction block
2000, 01 1998, 99
A/c condenser fan motor
A/c control assembly (center of dash)
A/c diode (near rear of engine room junction block)
A/c single pressure switch (on refrigerant line, near receiver-drier)
Alt fuse 100a
Cds fuse 30a
Ecu-ig fuse 15a
Engine control module (behind right side of dash)
Engine main relay
Engine room relay block (in engine room junction block)
Fan relay
Fusible link block (in engine room junction block)
G108
Hot at all times
Hot in run or start
Instrument panel junction block (behind left side of dash)
J13
Mgcr
Radiator fan motor
Rdi fuse 30a
Red
Water temperature switch 1 (in left front of engine compt)
Water temperature switch 2 (on top left rear of engine)

CRUISE CONTROL

Cruise Control Wiring Diagram for Lexus ES 300 1998

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List of elements for Cruise Control Wiring Diagram for Lexus ES 300 1998:

A/d
Batt
C10
Cancel
Ccs
Cms
Combination meter
Combination meter vehicle speed sensor (on tranaxle housing)
Combination switch
Cruise
Cruise control actuator (left center of engine compt)
Cruise control ecu (left side of dash)
Cruise control ind
Cruise control switch
Data link connector 1 (right rear of engine compt)
Data link connector 2 (under left side of dash)
E10
Ect
Ecu-b fuse 10a
Ecu-ig fuse 15a
Engine control module (behind right side of dash)
F j29
G202
Gauge fuse 10a
Gnd
Hot at all times
Hot in on and start
I/p junction block (left side of dash)
Idl
J/b 2 (left front fender)
J/b 27 (right side of dash)
J/c 1 (left kick panel)
J/c 15 (on left dash center support)
J/c 15 (top center of dash)
J/c 2 (left side of dash)
J/c 25 (right side of dash)
J/c 28, j/c 29 (right side of dash)
J/c 3 (left side of dash)
J/c 30 (left side of dash)
J/c 30 (right side of dash)
J/c 4 (left side of dash)
J/c 8, j/c 9 (left side of dash)
J28
J8 a
Od1
Odol
P/n
Park/neutral position switch (on top of transaxle)
Pnk
Resume/ accel
Set/ coast
Spd
Speedometer
Stop fuse 15a
Stop light switch
Stp-
V10

DEFOGGERS

Defogger Wiring Diagram for Lexus ES 300 1998

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List of elements for Defogger Wiring Diagram for Lexus ES 300 1998:

(left end of dash) g202
(right kick panel) g203
A14
A23
Def fuse 40a
Defogger relay
G206 (left instrument panel brace)
Gnd
Heater
Heater fuse 10a
Hot at all times
Hot in start or on
Instrument panel j/b junction block (behind left side of dash, above kick panel)
Instrument panel junction block (behind left side of dash, above kick panel)
J/c 15 (behind center of dash)
J/c 20 (behind right side of dash)
J/c 36 (left side of dash)
J/c 38 (right side of dash)
J12
J13
Left remote control mirror
Mirror heater fuse 10a
Noise filter
R-def
Rear window defogger
Rear window defogger switch (a/c control assembly)
Right remote control mirror

ELECTRONIC SUSPENSION

Electronic Suspension Wiring Diagram for Lexus ES 300 1998

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List of elements for Electronic Suspension Wiring Diagram for Lexus ES 300 1998:

(above left kick panel) j/c 1
(dash harn, upper left end of dash) i15
(not used)
Abs & traction ecu (behind right side of dash)
Abs ecu (behind right side of dash)
Absorber control ecu (behind left side of dash)
Absorber control switch
Af j/c 28 & j/c 29 (behind right side of dash)
Data link connector 1 (near right front corner of engine)
Data link connector 2 (under left side of dash)
Ecu-ig fuse 15a
Ecu1
Ecu2
Engine control module (behind right side of dash)
Fa-
Fb+
Fb-
Fro
Fss
G109 (right radiator support)
G206
G305 (lower right b-pillar)
G308
Gnd
Hot at all times
Hot in on & start
I13
Ill+
Ill-
Instrument panel junction block (behind left side of dash, above kick panel)
Interior lights system
J/c 15 (on left dash center support)
J/c 27 (behind right side of dash)
J/c 3 (behind left side of dash)
J/c 3 (left side of dash)
J/c 37 (lower left b-pillar)
J/c 8 & j/c 9 (behind left side of dash)
Left front absorber control actuator (left rear corner of engine compartment)
Left rear absorber control actuator (left front corner of luggage compartment)
Neo
Pnk
Ra+
Ra-
Rb+
Rb-
Red
Red d
Right front absorber control actuator (right rear corner of engine compartment)
Right rear absorber control actuator (right front corner of luggage compartment)
Rro
Ss1
Ss2
Steering sensor (behind left side of dash)
Stop fuse 15a
Stop light switch (on bracket, above brake pedal)
Stp
Sw1
Sw2
Tach
Tem
W/ traction control
W/o traction control

ENGINE PERFORMANCE

3.0L

3.0L, Engine Performance Wiring Diagrams, California (1 of 4) for Lexus ES 300 1998

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List of elements for 3.0L, Engine Performance Wiring Diagrams, California (1 of 4) for Lexus ES 300 1998:

(dash harn, right end of dash)
(dash harn, right side of dash)
(right side of surge tank)
Acis
Adj2
Afl+
Afl-
Afr+
Afr-
Camshaft position sensor (left rear side of engine)
Conn e7
Conn e8
Cooling fans system
Crankshaft position sensor (left front side of engine)
Cruise control ecu
E01
E02
E03
E04
E05
E2g
Egls
Egr
Electronically controlled transmission solenoid (in transaxle)
Engine control module (behind right side of dash)
Evp
G120
G120 (rear side of surge tank)
G120 (right side of surge tank)
G22+
Grd
Hafl
Hafr
Idle air control valve (top rear rear of engine)
Igc1
Igc2
Igc3
Igf
Igniter (near air intake duct)
Ignition coil 1
Ignition coil 2
Ignition coil 3
Igt1
Igt2
Igt3
Injector 1
Injector 2
Injector 3
Injector 4
Injector 5
Injector 6
J/c 22 (behind right side of dash)
J/c 24 (behind right side of dash)
J/c 26 (behind right side of dash)
Knkl
Knkr
Knock sensor 1 (top right side of engine)
Knock sensor 2 (top left side of engine)
Mass airflow meter (near air cleaner housing, on air duct)
Nc2+
Nc2-
Nca
Ne+
Ne-
Noise filter (near air cleaner housing)
Pnk
Power steering oil pressure switch (right rear of engine compt)
Red
Rsc
Rso
Sln+
Sln-
Tha
Thg
Thw
Vehicle speed sensor (transmission) (on transaxle housing)
Vta1

3.0L, Engine Performance Wiring Diagrams, California (2 of 4) for Lexus ES 300 1998

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List of elements for 3.0L, Engine Performance Wiring Diagrams, California (2 of 4) for Lexus ES 300 1998:

(behind right side of dash)
(dash harn, right side of dash)
(left side of dash)
(lower left "b" pillar)
(right side of surge tank) g120
A/f htr fuse 25a
A/f htr relay
Acc
Air fuel ratio sensor (bank 1 sensor 1) (rear right side of engine)
Air fuel ratio sensor (bank 2 sensor 1) (rear left side of engine)
Am2
B j/c 29
C10
Cir opn relay
Efi fuse 15a
Efi relay
Engine room junction block
Engine room relay block
Engine room relay block 2
Fuel pump (in fuel tank)
G108 (left radiator side support)
G117 (rear side of surge tank)
G308
Heated oxygen sensor (bank 1 sensor 2) (in exhaust manifold, after twc)
Hot at all times
Ig2
Ign fuse 5a
Ignition switch
Instrument panel junction block
J/c 24 (behind right side of dash)
J/c 25 (behind right side of dash)
J/c 3 (behind right side of dash)
J/c 31
J/c 8
J/c 9
Lock
Nca
P/n
Park/neutral position switch (on transaxle)
Red
St2
Start
Starter fuse 5a
Starting/ charging system

3.0L, Engine Performance Wiring Diagrams, California (3 of 4) for Lexus ES 300 1998

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List of elements for 3.0L, Engine Performance Wiring Diagrams, California (3 of 4) for Lexus ES 300 1998:

(behind right side of dash)
(dash harn, right end of dash)
(dash harn, right side of dash)
(left kick panel) g200
A/c control assembly
A/t indicator light switch (integral to park/ neutral position switch) (on transaxle)
A13
Absorber control ecu
B10
B12
B14
B15
Braided
C10
Combination meter
D13
Egr gas temperature sensor (top right rear of engine)
Egr valve position sensor (top right side of engine)
Engine coolant temperature sensor (top front of engine)
G200 (left kick panel)
G206 (right instrument panel brace)
Gauge fuse 10a
H10
Hot in on or start
Ig+
Instrument panel junction block
J/c 16 (behind center of dash)
J/c 17 (behind center of dash)
J/c 23 (behind right side of dash)
J/c 25 (behind right side of dash)
J/c 28
J/c 29
J/c 29 c
J/c 30 (behind right side of dash)
J/c 4 (behind left side of dash)
J/c 7 (behind left side of dash)
Malf ind lamp
O/d main switch
O/d off ind
Pnk
Ptnk
Red
Speedometer
Tacho- meter
Throttle position sensor (on throttle body)
Vapor pressure sensor (left side of firewall)
Vehicle speed sensor (combination meter) (on transaxle housing)
Vss
Vsv (egr) (top rear of engine)
Vsv (evap) (top front of engine)
Vsv (intake air control) (center top of engine)
Vsv (vapor pressure sensor) (near intake air duct)

3.0L, Engine Performance Wiring Diagrams, California (4 of 4) for Lexus ES 300 1998

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List of elements for 3.0L, Engine Performance Wiring Diagrams, California (4 of 4) for Lexus ES 300 1998:

(behind left side of dash)
(behind right side of dash)
(dash harn, left end of dash) i14
(dash harn, right side of dash)
A/c
A/c control assembly
Act
Bat
Batt
Braided
Code
Conn e10
Conn e11
Conn e9
Cruise control ecu
Data link connector 1 (near right front corner of engine)
Data link connector 3 (under left side of dash)
E0m
Efi+
Efi-
Els
Els2
Engine control module (behind right side of dash)
G120 (rear side of surge tank)
G120 (right side of surge tank)
G202
G206 (left instrument panel brace)
Hot at all times
Hot at all times
Hot w/defogger relay energized
Hot w/taillight relay energized
Hts
I11
I5 (dash harn, right side of dash)
Idlo
Igsw
Imld
Instrument panel junction block
J/c 1 (behind left side of dash)
J/c 10 (behind left side of dash)
J/c 18
J/c 19
J/c 24 (behind right side of dash)
J/c 26 (behind right side of dash)
J/c 27 (right side of dash)
J/c 8
J10
J11
Ksw
Mirror- heater fuse 10a
Mrel
Neo
Nsw
Obd fuse 7.5a
Od1
Od2
Oxs
Ptnk
Rxck
Sil
Spd
Sta
Stop fuse 15a
Stoplight switch (on bracket, above brake pedal)
Stp
Tach
Tail fuse 10a
Te1
Thwo
Tpc
Traction control ecu
Transponder key amplifier (behind left side of dash)
Trc+
Trc-
Txct
Unlock warning switch

3.0L, Engine Performance Wiring Diagrams, Except California (1 of 4) for Lexus ES 300 1998

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List of elements for 3.0L, Engine Performance Wiring Diagrams, Except California (1 of 4) for Lexus ES 300 1998:

(dash harn, right end of dash)
(dash harn, right side of dash)
(right side of surge tank)
Acis
Adj2
Camshaft position sensor (left rear side of engine)
Conn e7
Conn e8
Cooling fans system
Crankshaft position sensor (left front side of engine)
Cruise control ecu
E01
E02
E03
E2g
Egls
Egr
Electronically controlled transmission solenoid (in transaxle)
Engine control module (behind right side of dash)
Evp
G120
G120 (rear side of surge tank)
G120 (right side of surge tank)
G22+
Grd
Htl
Htr
Idle air control valve (top rear rear of engine)
Igc1
Igc2
Igc3
Igf
Igniter (near air intake duct)
Ignition coil 1
Ignition coil 2
Ignition coil 3
Igt1
Igt2
Igt3
Injector 1
Injector 2
Injector 3
Injector 4
Injector 5
Injector 6
J/c 22 (behind right side of dash)
J/c 24 (behind right side of dash)
J/c 26 (behind right side of dash)
Knkl
Knkr
Knock sensor 1 (top right side of engine)
Knock sensor 2 (top left side of engine)
Mass airflow meter (near air cleaner housing, on air duct)
Nc2+
Nc2-
Nca
Ne+
Ne-
Noise filter (near air cleaner housing)
Oxl
Oxr
Pnk
Power steering oil pressure switch (right rear of engine compt)
Red
Rsc
Rso
Sln+
Sln-
Tha
Thg
Thw
Vehicle speed sensor (transmission) (on transaxle housing)
Vta1

3.0L, Engine Performance Wiring Diagrams, Except California (2 of 4) for Lexus ES 300 1998

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List of elements for 3.0L, Engine Performance Wiring Diagrams, Except California (2 of 4) for Lexus ES 300 1998:

(behind right side of dash)
(dash harn, right side of dash)
(left side of dash)
(right side of surge tank) g120
(under left "b" pillar)
Acc
Am2
B j/c 29
C10
Cir opn relay
Efi fuse 15a
Efi relay
Engine room junction block
Engine room relay block
Fuel pump (in fuel tank)
G108 (left radiator side support)
G117 (rear side of surge tank)
G308
Heated oxygen sensor (bank 1 sensor 1) (in right exhaust manifold)
Heated oxygen sensor (bank 1 sensor 2) (in exhaust manifold, after twc)
Heated oxygen sensor (bank 2 sensor 1) (in left exhaust manifold)
Hot at all times
I5 (dash harn, right side of dash)
Ig2
Ign fuse 5a
Ignition switch
Instrument panel junction block
J/c 24 (behind right side of dash)
J/c 3 (behind right side of dash)
J/c 32 (behind right side of dash)
J/c 8
J/c 9
Lock
Nca
P/n
Park/neutral position switch (on transaxle)
Red
St2
Start
Starter fuse 5a
Starting/ charging system

3.0L, Engine Performance Wiring Diagrams, Except California (3 of 4) for Lexus ES 300 1998

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List of elements for 3.0L, Engine Performance Wiring Diagrams, Except California (3 of 4) for Lexus ES 300 1998:

(behind right side of dash)
(dash harn, right end of dash)
(dash harn, right side of dash)
(left kick panel) g200
A/c control assembly
A/t indicator light switch (integral to park/ neutral position switch) (on transaxle)
A13
Absorber control ecu
B10
B12
B14
B15
Braided
C10
Combination meter
D13
Egr gas temperature sensor (top right rear of engine)
Egr valve position sensor (top right side of engine)
Engine coolant temperature sensor (top front of engine)
G200 (left kick panel)
G206 (right instrument panel brace)
Gauge fuse 10a
H10
Hot in on or start
Ig+
Instrument panel junction block
J/c 16 (behind center of dash)
J/c 17 (behind center of dash)
J/c 23 (behind right side of dash)
J/c 25 (behind right side of dash)
J/c 28
J/c 29
J/c 29 c
J/c 30 (behind right side of dash)
J/c 4 (behind left side of dash)
J/c 7 (behind left side of dash)
Malf ind lamp
O/d main switch
O/d off ind
Pnk
Ptnk
Red
Speedometer
Tacho- meter
Throttle position sensor (on throttle body)
Vapor pressure sensor (left side of firewall)
Vehicle speed sensor (combination meter) (on transaxle housing)
Vss
Vsv (egr) (top rear of engine)
Vsv (evap) (top front of engine)
Vsv (intake air control) (center top of engine)
Vsv (vapor pressure sensor) (near intake air duct)

3.0L, Engine Performance Wiring Diagrams, Except California (4 of 4) for Lexus ES 300 1998

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List of elements for 3.0L, Engine Performance Wiring Diagrams, Except California (4 of 4) for Lexus ES 300 1998:

(behind left side of dash)
(behind right side of dash)
(dash harn, left end of dash) i14
(dash harn, right side of dash)
A/c
A/c control assembly
Act
Bat
Batt
Braided
Code
Conn e10
Conn e11
Conn e9
Cruise control ecu
Data link connector 1 (near right front corner of engine)
Data link connector 3 (under left side of dash)
E0m
Efi+
Efi-
Els
Els2
Engine control module (behind right side of dash)
G120 (rear side of surge tank)
G120 (right side of surge tank)
G202
G206 (left instrument panel brace)
Hot at all times
Hot at all times
Hot w/defogger relay energized
Hot w/taillight relay energized
Hts
I11
I5 (dash harn, right side of dash)
Idlo
Igsw
Imld
Instrument panel junction block
J/c 1 (behind left side of dash)
J/c 10 (behind left side of dash)
J/c 18
J/c 19
J/c 24
J/c 27 (right side of dash)
J/c 8
J10
J11
Ksw
Mirror- heater fuse 10a
Mrel
Neo
Nsw
Obd fuse 7.5a
Od1
Od2
Oxs
Ptnk
Rxck
Sil
Spd
Sta
Stop fuse 15a
Stoplight switch (on bracket, above brake pedal)
Stp
Tach
Tail fuse 10a
Te1
Thwo
Tpc
Traction control ecu
Transponder key amplifier (behind left side of dash)
Trc+
Trc-
Txct
Unlock warning switch

EXTERIOR LIGHTS

Back-up Lamps Wiring Diagram for Lexus ES 300 1998

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List of elements for Back-up Lamps Wiring Diagram for Lexus ES 300 1998:

B/u
B14 (body harn, center rear of trunk lid)
B9 (body harn, left side of trunk lid)
Back-up light switch (integral to park/ neutral position switch)
G308 (lower left b-pillar)
Gauge fuse 10a
Hot in on or start
Instrument panel junction block (behind left side of dash, above kick panel)
J/c 25 (right side of dash)
J/c 28 (right side of dash)
J/c 28, j/c 29 (right side of dash)
J/c 37 (under left center pillar)
J28
J29
Left rear combination light
Right rear combination light
S13

Exterior Lamps Wiring Diagram for Lexus ES 300 1998

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List of elements for Exterior Lamps Wiring Diagram for Lexus ES 300 1998:

(body harn, center of trunk lid) b12
(body harn, center rear of trunk) b13
(body harn, front of left rear wheel- well) b5
(body harn, left front of trunk) b7
(body harn, near left taillight) b11
(body harn, near right taillight)
(center rear of trunk) g407
(inner)
(right side of dash) j/c 17
Alt fuse 100a
B j31
B10
B14 (body harn, center rear of trunk lid)
B15
C10
Comb- ination meter
Comb- ination switch
Combination meter
E2 (engine harness left front fender)
Engine room junction block (on left side of engine compt)
F11
From j/c 18, j/c 19 (diagram 1 of 1)
Fusible link block (left side of engine compt)
G108 (left radiator side support)
G109 (right radiator support)
G200 (left kick panel)
G206 (on left dash center support)
G308 (lower left b-pillar)
G407 (center rear of trunk)
Gauge fuse 10a
Hazard fuse 10a
Hazard switch
Head
High mount stop light
Hot at all times
Hot in on or start
I/p junction block (left side of dash)
I13
I15
Instrument panel junction block (behind left side of dash, above kick panel)
Integration relay (in i/p j/b)
J/b 1 (behind lower left side of dash)
J/c 15
J/c 16 (behind center of dash)
J/c 18, j/c 19 (right side of dash)
J/c 2 (left side of dash)
J/c 31, j/c 32 (right side of dash)
J/c 37 (near lower left b-pillar)
J/c 4 (left side of dash)
J/c 8 (left side of dash)
J18
J19
Left front combination light
Left rear combination lights (outer)
License plate lights
Light failure sensor (left front of trunk)
Light light ctrl ctrl switch switch
Off
Rear light warning ind
Rear side marker lights
Red
Right front combination light
Right rear combination lights (outer)
S11
Side marker
Stop
Stop fuse 15a
Stop light switch (above brake pedal)
Tail
Tail fuse 10a
Tail- light relay
To j/c 31, j/c 32 (diagram 1 of 1)
Turn
Turn fuse 7.5a
Turn signal flasher (behind left kick panel)
Turn signal ind
Turn signal switch

GROUND DISTRIBUTION

Ground Distribution Wiring Diagram (1 of 4) for Lexus ES 300 1998

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List of elements for Ground Distribution Wiring Diagram (1 of 4) for Lexus ES 300 1998:

A/c dual pressure switch
A/f heater relay (calif only)
A19
A21
A23
A30
A31
Abs & traction ecu
Abs actuator
Abs and traction actuator
Abs ecu
Abs solenoid relay
B17
Combination meter
Data link connector
Drl relay
E1 (engine harness, behind right headlight)
E3 (engine harn, left front fender)
Efi relay
Engine control module
Engine hood courtesy switch
Engine main relay
Engine room junction block (on left side of engine compt)
Engine room relay block (in engine room junction block)
Engine room relay block 2 (on left front of engine compartment)
Engine room relay block 3 (in right front of engine compt, on radiator upper support)
Fan relay 2
From g109 (diagram 1 of 4)
Front wiper motor
G108 (left radiator side support)
G109 (right radiatior support)
G120 (rear side of surge tank)
G120 (right side of surge tank)
Heated oxygen sensor (bank 1, sensor 1)
Heated oxygen sensor (bank 1, sensor 2)
Heated oxygen sensor (bank 2, sensor 1)
Heater relay
I5 (dash harness, right side of dash)
Ignitor
J/c 24 (behind right side of dash)
J/c 26 (behind right side of dash)
J/c 8, j/c 9 (behind left side of dash)
J10
Left front fog light
Left front turn signal/ parking light
Left low beam headlight
Noise filter
Radiator fan motor
Right front absorber control actuator
Right front fog light
Right front turn signal/ parking light
Right low beam headlight
To g108 (diagram 1 of 4)
Washer level warning switch
Water temperature switch 1

Ground Distribution Wiring Diagram (2 of 4) for Lexus ES 300 1998

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List of elements for Ground Distribution Wiring Diagram (2 of 4) for Lexus ES 300 1998:

(canada)
A/c control assembly
A/c blower motor linear controller
A27
A28
A29
Absorber control ecu
Absorber control switch
Air vent mode control servo motor
Airbag sensor assembly
Blower resistor
Brake fluid level warning switch
C10
Cd automatic changer
Cigarette lighter
Combination meter
Combination switch
Cruise control actuator
Cruise control ecu
Cruise control switch
Data link connector
Daytime running light main relay
Engine oil level warning switch
Engine room junction block (on left side of engine compt)
Front wiper/ washer switch
Fuel sender
G203 (right kick panel)
G206
G206 (right instrument panel brace)
I4 (dash harn, behind left side of dash)
Instrument panel junction block (behind left side of dash, above kick panel)
Integration relay
J/c 15 (under left side of radio)
J/c 20, j/c 21 (behind right side of dash)
J/c 38 (in right front door)
J/c 8, j/c 9 (behind left side of dash)
J20
J20 (canada)
J21
Key interlock solenoid
Left front absorber control actuator
Noise filter
Power relay
Right front door key lock/ unlock switch
Right front door lock control switch
Right front door unlock detection switch
Right mirror heater
Start relay
Steering sensor
Stereo component amplifier
To g201 (diagram 4 of 4)
Trac off switch
Turn signal flasher relay
Unlock warning switch

Ground Distribution Wiring Diagram (3 of 4) for Lexus ES 300 1998

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List of elements for Ground Distribution Wiring Diagram (3 of 4) for Lexus ES 300 1998:

(body harn, center rear of trunk lid) b14
(w/ driving position memory)
(w/o driving position memory)
B13 (body harn, behind center of rear bumper)
B14
B16 (body harn, below driver's seat)
Buckle switch
C15
Cellular phone
Clock
Combination meter
Driver's lumbar seat control switch
Driver's power seat control switch
Driver's seat heater
Driver's seat heater switch
Fuel lid & luggage compartment door opener switch
Fuel lid opener motor
Fuel pump
G200 (left kick panel)
G308 (lower left b-pillar)
G407 (center rear of trunk)
Glove box light switch
High mounted stop light
J/c 16 (behind center of dash)
J/c 37 (lower left b-pillar)
Left license plate light
Left rear absorber control actuator
Left rear combination light
Left rear door unlock detection switch
Left rear side marker light
Left rear turn signal light
Light failure sensor
O/d main switch
Passenger's seat heater switch
Remote control mirror switch
Rheostat
Right license plate light
Right rear combination light
Right rear side marker light
Right rear turn signal light
S14
Seat position control ecu
Shift lock control ecu
Telephone transceiver/ speaker relay
Theft deterrent ecu
Wireless door lock ecu

Ground Distribution Wiring Diagram (4 of 4) for Lexus ES 300 1998

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List of elements for Ground Distribution Wiring Diagram (4 of 4) for Lexus ES 300 1998:

Airbag sensor assembly
B4 (or b2)
B4 (or b2) (b4: roof harn, center of windshield header) (w/ moon roof) (b2: roof harn, left a-pillar) (w/o moon roof)
B6 (body harn, right front door sill)
Driver's power seat control switch
Driver's power seat position sensor (front vertical control)
Driver's power seat position sensor (rear vertical control)
Driver's power seat position sensor (reclining control)
Driver's power seat position sensor (slide control)
From j/c 15 (diagram 2 of 4)
G200 (left kick panel)
G201 (right side of dash)
G202 (left end of dash)
G203 (right kick panel)
G305 (lower right b-pillar)
G902 (left front of roof)
Instrument panel junction block (behind left side of dash, above kick panel)
J/c 36 (left kick panel)
Left front door key lock/ unlock switch
Left front door unlock detection switch
Left mirror heater
Left vanity light
Moon roof control switch/ moon roof control relay
Moon roof motor/ limit switch
Passenger's power seat control switch
Passenger's seat heater
Personal light
Power outlet
Power window master switch
Right rear absorber control actuator
Right rear door unlock detection switch
Right vanity light
S15
Seat memory switch
Seat position control ecu
Transponder key amplifier

HEADLIGHTS

Headlight Wiring Diagram, with DRL (1 of 2) for Lexus ES 300 1998

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List of elements for Headlight Wiring Diagram, with DRL (1 of 2) for Lexus ES 300 1998:

Auto
Automatic light control sensor (upper left corner of dash)
Brake fluid level warning switch (in brake fluid reservoir)
Brk
Chg-
Combination switch
Cty
Daytime running light main relay (behind center of dash)
Dimmer switch
Drl
Ecu-ig fuse 15a
Exterior lights system (taillight relay)
Flash
Fog fuse 15a
Fog light switch
Front fog light relay (behind left side of dash)
G108 (left radiator side support)
G109 (right radiator support)
G206
Gauge fuse 10a
Generator
Head
Headlight switch
High
Hot at all times
Hot in on or start
Instrument cluster system (brake ind)
Instrument panel junction block (behind left side of dash, above kick panel)
J/c 10, j/c 11 (behind combin- ation meter)
J/c 15 (on left dash center support)
J/c 18, j/c 19 (top right side of dash)
J/c 2 (left side of dash)
J/c 20, j/c 21 (top right side of dash)
J/c 28 (righ side of dash)
J/c 31, j/c 32 (right kick panel) j31
J/c 5 (righ side of dash)
J/c 8, j/c 9 (behind lower left side of dash)
J10
J11
J18
J19
J20
J21
J32
Left front fog light
Low
Off
Parking brake switch
Pkb
Red
Right front fog light
Tail

Headlight Wiring Diagram, with DRL (2 of 2) for Lexus ES 300 1998

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List of elements for Headlight Wiring Diagram, with DRL (2 of 2) for Lexus ES 300 1998:

Batt
Combination meter
Cty sw
Dome fuse 7.5a
Drl 2 fuse 5a
Drl 2 relay
Drl 3 relay
Drl 4 relay
Engine room junction block (on left side of engine compartment)
Engine room junction block (on left side of engine compt)
Engine room relay block 2 (on left front of engine compartment)
Engine room relay block 2 (on left front of engine compt)
Exterior lights system (taillight relay)
G108 (left radiator side support)
G109 (right radiator support)
G206
Head relay
Head rly
Head sw
High beam ind
Hot at all times
Instrument panel junction block (behind left side of dash, above kick panel)
Integration relay
J/c 10 (behind combination meter)
J/c 15 (on left dash center support)
J/c 18, j/c 19 (top right side of dash)
J/c 20 (top right side of dash)
J/c 20, j/c 21 (top right side of dash)
J12
J18
J19
J20
J21
Left front door courtesy switch
Left head fuse 10a
Left high beam headlight
Left low beam headlight
Left lower head fuse 10a
Main fuse 40a
Red
Right head fuse 10a
Right high beam headlight
Right low beam headlight
Right lower head fuse 10a
Short pin
Tail rly
Tl/hd in

Headlight Wiring Diagram, without DRL for Lexus ES 300 1998

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List of elements for Headlight Wiring Diagram, without DRL for Lexus ES 300 1998:

Auto
Automatic light control sensor (upper left corner of dash)
B15
Combination meter
Combination switch
Cty
Dimmer switch
Dome fuse 7.5a
Door sw in
Ecu-ig fuse 15a
Engine room junction block (on left side of engine compt)
Exterior lights system (taillight relay)
Flash
Fog fuse 15a
Fog light switch
From fog fuse (diagram 1 of 1)
Front fog light relay (left side of dash)
G108 (left radiator side support)
G109 (right radiator support)
G200 (left kick panel)
G206
Hdlt in
Hdlt rly
Head
Head relay
Headlight on ind
Headlight switch
High
High beam ind
Hot at all times
Hot in on or start
Instrument panel junction block (behind left side of dash, above kick panel)
Integration relay
J/c 10, j/c 11 (behind combination meter)
J/c 10, j/c 11 (right side of dash)
J/c 15 (on left dash center support)
J/c 16 (top center of dash)
J/c 18, j/c 19 (right side of dash)
J/c 20, j/c 21 (right side of dash)
J/c 31, j/c 32 (right kick panel)
J/c 5 (left side of dash)
J/c 8 (left side of dash)
J10
J11
J12
J18
J19
J20
J21
J31
J32
Left front door courtesy switch
Left front fog light
Left head fuse 15a
Left high beam headlight
Left low beam headlight
Low
Main fuse 40a
Off
Red
Right front fog light
Right head fuse 15a
Right high beam headlight
Right low beam headlight
Tail
Tllt rly
Tllt/hdlt in
To front fog light relay (diagram 1 of 1)

HORN

Horn Wiring Diagram for Lexus ES 300 1998

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List of elements for Horn Wiring Diagram for Lexus ES 300 1998:

Combination switch
Engine room j/b (left side of engine compartment)
Horn fuse 10a
Horn relay
Horn switch
Hot at all times
J/c 2 (behind left kick panel)
K10
Left horn
Right horn

INSTRUMENT CLUSTER

Instrument Cluster Wiring Diagram (1 of 2) for Lexus ES 300 1998

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List of elements for Instrument Cluster Wiring Diagram (1 of 2) for Lexus ES 300 1998:

(canada)
(center of firewall)
(left side of dash)
(right side of dash) j/c 28, j/c 29
(top center of dash) j/c 17
(usa)
2 ind
A/c control assembly (center of dash)
A10
A13
A14
Abs ind
Absorber control ecu (left side of dash)
Anti-lock brakes system
B10
B11
B12
B13
B14
B15
B16
Brake fluid level warning switch (left rear of engine compt)
Brake ind
Brk
Bulb check relay
C10
Canada
Charge ind
Combination meter
Cpu/solid state
Cruise control ecu (left side of dash)
Cruise control system
Cruise ind
D ind
D10
D11
D12
D13
Daytime running light main relay (center of dash)
Delay circuit
Diode (left kick panel)
Dome fuse 7.5a
Door ind
E10
Ecu-b fuse 10a
Engine control module (right side of dash)
Engine controls system
Exterior lights system
Fuel gauge
Fuel ind
Fuel sender
G109 (right radiator support)
G121
G202
G206 (on right dash center support)
Head light on ind
Headlights system
Headlights system (right head fuse)
High beam ind
Hot at all times
Hot in on or start
Hot with taillight relay energized
I/p j/b (left side of dash)
Ign
Ign fuse 5a
Interior lights system
J/b 2 (left side of engine compt)
J/c 12 (behind gauges)
J/c 15 (on left dash center support)
J/c 16 (behind center of dash)
J/c 2 (left side of dash)
J/c 4
J/c 5 (left side of dash)
J12
J28
J29
L ind
Left turn ind
Malfunction indicator lamp
N ind
Neo
O/d off ind
Odometer/cpu
Oil level/ temperature ind
Oil pressure ind
Oil pressure switch (right front of engine)
P ind
Panel fuse 7.5a
Parking brake switch
Pkb
Pnk
R ind
Rear light failure ind
Red
Rheostat
Right turn ind
Seat belt ind
Slip ind
Spd
Speedometer
Srs ind
Starting/charging system
Tach
Tachometer
Taillight on ind
Trac off ind
Usa
Warning system
Washer level ind
Washer level warning switch (right front corner of engine compt)
Water temperature gauge
Water temperature sender (top right of engine)

Instrument Cluster Wiring Diagram (2 of 2) for Lexus ES 300 1998

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List of elements for Instrument Cluster Wiring Diagram (2 of 2) for Lexus ES 300 1998:

(front of transaxle) park/neutral position switch
(right side of dash) j/c 28, j/c 29
(right side of dash) j/c 30
A j28
A/t indicator light switch
C j29
Combination meter vehicle speed sensor (on transaxle housing)
E10
Engine control module (right side of dash)
Engine oil level warning switch (left front of engine)
G200 (left kick panel)
G202
Gauge fuse 10a
H10
Hot
Hot in on or start
I/p j/b (left side of dash)
Ig+
J/c 15 (on left dash center support)
J/c 16 (behind center of dash)
J/c 25 (right side of dash)
J/c 28, j/c 29 (right side of dash)
J/c 4 (left side of dash)
J/c 7 (left side of dash)
J/c 8 (left side of dash)
J28
J29
Low
Normal
O/d main switch
Od2
Oil level switch
Oil temperature switch
Pnk
Red

INTERIOR LIGHTS

Courtesy Lamps Wiring Diagram for Lexus ES 300 1998

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List of elements for Courtesy Lamps Wiring Diagram for Lexus ES 300 1998:

(body harn, left "a" pillar) b2 (w/o moonroof)
(body harness, in roof, above left front window) b3
(left end of dash) g202
Anti-theft system
B2 (body harn, left "a" pillar)
B3 (body harness, in roof, above left front window)
B4 (w/ moonroof) (body harness, (center of windshield header)
B7 (body harness, left quarter panel)
B8 (body harness, behind left rear seat)
Combination meter
Condenser (at left front side of luggage compartment)
Diode (behind left kick panel)
Diode (behind right side of dash, above kick panel)
Dome fuse 7.5a
Door
Engine room junction block (on left side of engine compartment)
Exterior lights system
G206
H11
Hot at all times
I14
Ignition key cylinder light
Instrument panel junction block (behind left side of dash)
Integration relay
Interior light
J/c 10 (behind upper left side of dash)
J/c 15 (under left side of radio)
J/c 34, j/c 35 (behind right kick panel)
J/c 5 (behind left side of dash)
J12
J34
J35
Left door courtesy light
Left front door courtesy switch
Left rear door courtesy switch
Left vanity light
Luggage compartment light
Luggage compartment light switch
Off
Open door warning light
Personal light
Red
Right door courtesy light
Right front door courtesy switch
Right rear door courtesy switch
Right vanity light
S12

Instrument Illumination Wiring Diagram for Lexus ES 300 1998

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List of elements for Instrument Illumination Wiring Diagram for Lexus ES 300 1998:

(left kick panel) g200
A/c control assembly
A/t shift lever illumination (o/d main switch)
Absorber control switch
C10
Cigarette lighter illumination
Combination meter
Driver's seat heater switch
G206
Gauge fuse 10a
Glove box light
Glove box light switch
Hazard switch
Head
Hot at all times
Hot in on or start
I15
I16 (dash harness, right side of center console)
Ill-
Instrument panel junction block (behind left side of dash)
Integration relay (in instrument panel junction block)
J/c 12, j/c 13 (top left side of dash)
J/c 15 (under left side of radio)
J/c 16 (behind center of dash)
J/c 18, j/c 19 (right side of dash)
J/c 2 (left kick panel)
J/c 20, j/c 21 (right side of dash)
J/c 4 (left side of dash)
J/c 5, j/c 6 (behind left side of dash)
J/c 8 (behind left side of dash)
J12
J13
J18
J19 d
J20
J20 d
J21 e
Light control switch (part of combination switch)
Off
Panel fuse 7.5a
Passenger's seat heater switch
Radio & player
Remote control mirror switch
Rheostat
Tail
Taillight relay

MEMORY SYSTEMS

Memory System Wiring Diagrams for Lexus ES 300 1998

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List of elements for Memory System Wiring Diagrams for Lexus ES 300 1998:

(body harness, below driver's seat)
B1 (body harn, left front door sill)
B16
Dcty
Down
Driver's power seat control switch
Driver's seat front vertical position sensor
Driver's seat front vertical power seat motor
Driver's seat lumbar support motor
Driver's seat rear vertical position sensor
Driver's seat rear vertical power seat motor
Driver's seat reclining position sensor
Driver's seat reclining power seat motor
Driver's seat slide position sensor
Driver's seat slide power seat motor
Ecu-b fuse 10a
Ecu-ig fuse 15a
Engine room junction block (on left side of engine compt)
Fdwn
Front
Front vertical
Frv+
Frv-
Fup
G200 (left kick panel)
G308
Gnd
Hot at all times
Hot in on or start
Instrument panel junction block (behind left side of dash, above kick panel)
J/c 30 (right side of dash)
J/c 37 (lower left b-pillar)
J/c 5 (left side of dash)
Left front door courtesy switch
Lumbar support switch
Memory seat switch
Mmry
Park/ neutral position switch
Pnk
Power fuse 30a
Pvcc
Rcl+
Rcl-
Rclf
Rclr
Rdwn
Rear
Rear vertical
Reclining
Red
Rrv+
Rrv-
Rup
S14
S15
Seat position control ecu (under driver's seat)
Set
Sgnd
Sld+
Sld-
Sldf
Sldr
Slide
Ssfv
Ssrr
Ssrs
Ssrv
Stop
Stop fuse 15a
Stoplight switch (on bracket, above brake pedal)
Sw1
Sw2
Sysb
V10

POWER DISTRIBUTION

Power Distribution Wiring Diagram (1 of 2) for Lexus ES 300 1998

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List of elements for Power Distribution Wiring Diagram (1 of 2) for Lexus ES 300 1998:

(california only)
(canada)
(on left side of engine compt) engine room junction block
(usa)
A/c blower motor linear controller, blower motor
A/c condenser fan motor
A/f htr fuse 25a
A/f htr relay
Abs & traction actuator, abs actuator
Abs fuse 60a
Abs motor relay
Abs solenoid relay
Alt fuse 100a
Alt-s fuse 5a
Am2 fuse 30a
Battery
C from radio 1 fuse (diagram 1 of 2)
Cd automatic changer, stereo component amplifier
Cds fuse 30a
Combination meter, clock, door courtesy lights, drl main relay, ignition key light, interior light, trunk light, vanity lights, wireless door lock ecu, integration relay, automatic light control sensor, personal light, theft deterrent ecu
Combination meter, cruise control ecu, seat position control ecu, a/c control assembly
Combination meter, front fog light relay, right headlight, drl 3 relay
Data link connector 1
Data link connector 1, engine control module, fuel pump, heated oxygen sensors, idle air control valve, mass air flow sensor, vsv's, efi relay, circuit opening relay
Dome fuse 7.5a
Drl 2 relay
Drl no 2 fuse 5a
Drl relays
E2 (engine harness, left front fender)
Ecu-b fuse 10a
Efi fuse 15a
Engine controls system
Engine main relay
Engine room junction block (on left side of engine compt)
Engine room relay block (in engine room junction block)
Engine room relay block 2
Engine room relay block 2 (california only) (on left front of engine compt)
Engine room relay block 2 (on left front of engine compt)
Engine room relay block 3 (in right front of engine compt, on radiator upper support)
Fan 1 relay
Fusible link block (in engine room junction block)
Generator
Hazard fuse 10a
Hazard switch
Headlight relay
Heater relay
Horn fuse 10a
Horn relay
Horns
Htr fuse 50a
J12
K11
Left head fuse 15a
Left headlight
Left low beam head- light, front fog light relay
Left lower head fuse 10a
Main fuse 40a
Radiator fan motor, fan 3 relay
Radio 1 fuse 20a
Rdi fuse 30a
Red
Right head fuse 15a
Right low beam head- light
Right lower head fuse 10a
Short pin
Start relay
Tel fuse 5a
Telephone transceiver and speaker relay
Theft deterrent horn
To am1 fuse (diagram 2 of 2)
To hazard fuse (diagram 1 of 2)
To ignition switch (diagram 2 of 2)

Power Distribution Wiring Diagram (2 of 2) for Lexus ES 300 1998

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List of elements for Power Distribution Wiring Diagram (2 of 2) for Lexus ES 300 1998:

(behind left side of dash, above kick panel) instrument panel junction block
40a
A/c control assembly, air vent mode control servo motor, defogger relay, magnetic clutch relay, heater relay
Acc
Am1 fuse
Automatic light control sensor, right front door lock control switch, cellular phone, telephone transceiver & speaker relay, shift lock ecu, seat position control ecu, theft deterrent ecu, wireless door lock ecu, abs ecu, abs & traction ecu, cruise control ecu, steering sensor, absorber control ecu, fan relays, engine main relay
Back-up light switch, drl main relay, p/n position switch, vehicle speed sensor, combination meter, rheostat, light failure sensor
Cd automatic automatic changer, stereo component amplifier
Cig fuse 15a
Cigar lighter
Clock, air bag sensor, remote mirror switch, shift lock ecu, theft deterrent ecu
Combination meter, efi relay, air bag sensor
Data link connector 3
Def fuse 40a
Defog- ger relay
Door fuse 25a
Ecu-ig fuse 15a
Engine control module, light failure sensor, front parking lights, rear parking (tail) lights license plate lights
Engine control module, heated mirrors
Engine control module, park/neutral position switch
Fog fuse 15a
From am1 fuse (diagram 2 of 2)
From am2 fuse (diagram 1 of 2)
From fusible link block (diagram 1 of 2)
Front fog light relay
Front wiper motor, front wiper & washer switch
G206
Gauge fuse 10a
Hazard switch
Heater fuse 10a
I1 (dash harn, upper left end of dash)
Ign fuse 5a
Ignition switch
Integration relay
Integration relay, theft deterrent ecu, fuel lid & luggage compartment door opener switch
Interior lights system
J/c 15 (under left side of radio)
J10
J11
Lock
Mirr0r heater fuse 10a
Noise filter
Obd fuse 7.5a
Panel fuse 7.5a
Power fuse 30a
Power outlet
Power outlet fuse 15a
Power relay
Rad 2 fuse 7.5a
Red
Seat heater fuse 20a
Seat heater switches
Start
Starter fuse 5a
Stop fuse 15a
Stop light switch
Tail fuse 10a
Tail- light relay
To def fuse (diagram 2 of 2)
Turn fuse 7.5a
Wiper fuse 20a

POWER DOOR LOCKS

Keyless Entry Wiring Diagram (1 of 2) for Lexus ES 300 1998

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List of elements for Keyless Entry Wiring Diagram (1 of 2) for Lexus ES 300 1998:

(behind left kick panel) diode
(behind right side of dash, above kick panel)
Diode
Dome fuse 7.5a
Door fuse 25a
Engine room junction block (on left side of engine compt)
G202 (left side of dash)
G206
Gauge fuse 10a
Hot at all times
Hot in on or start
Instrument panel junction block (behind left side of dash, above kick panel)
Integration relay
J/c 12, j/c 13 (behind combination meter)
J/c 15 (on left dash center support)
J/c 33 (right side of dash)
J/c 34, j/c 35 (right kick panel)
J/c 36 (inside left front door)
J/c 5, j/c 6 (top center of dash)
J12
J13
J34
J35
Left front door courtesy switch
Left rear door courtesy switch
Red
Right front door courtesy switch
Right rear door courtesy switch
S12
Unlock warning switch (steering column)

Keyless Entry Wiring Diagram (2 of 2) for Lexus ES 300 1998

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List of elements for Keyless Entry Wiring Diagram (2 of 2) for Lexus ES 300 1998:

(above instrument panel junction block) wireless door lock buzzer volume switch
(center rear of trunk)
(left kick panel) g200
(left side of dash) j/c 5, j/c 6
(right front corner of engine compt) wireless door lock buzzer
(right kick panel)
(right kick panel) g203
(right side of dash) j/c 33
(right side of i/p j/b) j/c 7
(under center of dash, forward of center console) theft deterrent ecu
+b1
+b2
B10
B11
B13
B14
B15
B16
Cty
Dswd
Dswp
Ecu-ig fuse 15a
Exterior lights system
G305 (lower right b-pillar)
G308
G407
Hot in on or start
Instrument panel junction block (behind left side of dash, above kick panel)
J/c 10, j/c 11 (behind combination meter)
J/c 16 (top center of dash)
J/c 34, j/c 35
J/c 37 (lower (left b-pillar)
J/c 38 (inside right front door)
J10
J11
J34
J35
Ksw
Left door key lock/ unlock switch
Left door lock control switch
Left front door lock motor/door unlock detection switch
Left rear door lock motor/door unlock detection switch
Lock
Lswd
Lswp
Lswr
Lug
Luggage comp- artment door key unlock switch
Power window master switch
Red
Right door key lock/ unlock switch
Right door lock control switch
Right front door lock motor/door unlock detection switch
Right rear door lock motor/door unlock detection switch
Ul2
Ul3
Unlock
Wireless door lock ecu (under center of dash, forward of center console)

POWER MIRRORS

Power Mirrors Wiring Diagram for Lexus ES 300 1998

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List of elements for Power Mirrors Wiring Diagram for Lexus ES 300 1998:

Cig fuse 15a
Down
G200 (left kick panel)
Hot in acc or on
Instrument panel junction block (behind left side of dash, above kick panel)
J/c 16 (behind center of dash)
J/c 4 (behind left side of dash)
J/c 7 (behind left side of dash)
Left
Left remote control mirror
Operation switch
Remote control mirror switch
Right
Right remote control mirror
Select switch

POWER SEATS

Heated Seats Wiring Diagram for Lexus ES 300 1998

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List of elements for Heated Seats Wiring Diagram for Lexus ES 300 1998:

B6 (body harn, right front door sill)
Driver's seat heater
Driver's seat heater switch
Front passenger's seat heater
Front passenger's seat heater switch
G200 (left kick panel)
G203 (right kick panel)
G407 (center rear of trunk)
Hot in on or start
I16 (dash harn, right side of center console)
Instrument panel junction block (behind left side of dash, above kick panel)
J/c 16 (behind center of dash)
Seat-heater fuse 20a

Power Seats Wiring Diagram for Lexus ES 300 1998

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List of elements for Power Seats Wiring Diagram for Lexus ES 300 1998:

B6 (body harn, right front door sill)
Down
Driver's power seat control switch or passenger's power seat control switch
Driver's seat
Front
Front passenger's seat
Front vertical control motor (under seat)
G305 (lower right b-pillar)
G308
Hot at all times
I2 (instrument harness, upper left end of dash)
Instrument panel junction block (behind left side of dash, above kick panel)
J/c 37 (lower left b-pillar)
Power fuse 30a
Rear
Rear vertical control motor (under seat)
Reclining
Reclining control motor (under seat)
Red
Slide
Slide control motor (under seat)
Vertical

POWER TOP/SUNROOF

Power Top/Sunroof Wiring Diagrams for Lexus ES 300 1998

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List of elements for Power Top/Sunroof Wiring Diagrams for Lexus ES 300 1998:

(left front of roof)
B2 (body harness, left a-pillar)
B4 (body harness, center of windshield header)
Door fuse 25a
Front door courtesy switch
G202 (left end of dash)
G206 (left instrument panel brace)
G902
Gauge fuse 10a
Hot at all times
Hot in on or start
I14
Instrument panel junction block (behind left side of dash, above kick panel)
Integration relay
J/c 15 (under left side of radio)
J/c 34, j/c 35 (right kick panel)
J34
J35
Left
Moon roof control switch & moon roof control relay (at front of moon roof opening)
Moon roof motor & limit switch (beside moon roof control switch)
Power relay
Power fuse 30a
Red
Right front door courtesy switch
Slide open
Tilt up

POWER WINDOWS

Power Window Wiring Diagram for Lexus ES 300 1998

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List of elements for Power Window Wiring Diagram for Lexus ES 300 1998:

Door fuse 25a
Door lock control switch
Door locks system
Down
G12
G13
G202 (left side of dash)
G206
Gauge fuse 10a
Hot at all times
Hot in on or start
I/p j/b (left side of dash)
Integration relay
J/c 15 (left dash center support)
J/c 34, j/c 35 (behind right side of dash)
J/c 34, j/c 35 (right kick panel)
J/c 36 (in left front door)
J/c 4 (left kick panel)
J34
J35
Left front door courtesy switch
Left front power window motor
Left front power window switch
Left rear power window control switch
Left rear power window motor
Left rear power window switch
Lock
Power fuse 30a
Power main relay
Power window control switch
Power window lock switch
Power window master switch
Red
Right rear
Right front door courtesy switch
Right front power window control switch
Right front power window motor
Right front power window switch
Right rear power window motor
Right rear power window switch
Rld
Rlu
Rrd
Rru
Solid state
Unlock

RADIO

Radio Wiring Diagrams for Lexus ES 300 1998

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List of elements for Radio Wiring Diagrams for Lexus ES 300 1998:

(dash harness, lower right end of dash) i12
A10
A11
A12
A13
A14
A15
Acc
Amp+
Automatic cd changer
B10
B11
B12
Beep
C10
Cdl+
Cdl-
Cdr+
Cdr-
Engine room junction block (on left side of engine compartment)
Fl+
Fl-
Fr+
Fr-
G206 (right dash brace)
Gnd
Hot at all times
Hot in acc or on
Illum
Instrument panel junction block (behind left side of dash, near kick panel)
Interior lights system
J/c 14 (under top center of dash)
J/c 36 (behind left end of dash)
J/c 38 (right kick panel)
K11
Left front door speaker
Left front tweeter speaker
Left rear door speaker
Mute
Nakamichi
Pnk
Racc
Rad fuse 2 7.5a
Radio & player
Radio fuse 1 20a
Red
Right front door speaker
Right front tweeter speaker
Right rear door speaker
Rl+
Rl-
Rr+
Rr-
Sgnd
Shielded wire
Speaker relay
Stereo component amplifier (behind right side of dash)
Tel mute
Telephone transceiver
Telephone transceiver & speaker relay (on left side of luggage compartment)
Tx+
Tx-
Wf+
Wf-
Woofer speaker

SHIFT INTERLOCKS

Shift Interlock Wiring Diagram for Lexus ES 300 1998

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List of elements for Shift Interlock Wiring Diagram for Lexus ES 300 1998:

Acc
Cig fuse 15a
Ecu-ig fuse 15a
G200 (left kick panel)
G206
Hot at all times
Hot in acc or on
Hot in on or start
Instrument panel junction block (behind left side of dash, above kick panel)
Instrument panel junction block (behind left side of, dash above kick panel)
J/c 15 (under left side of radio)
J/c 16 (center of dash)
J/c 5 (left side of dash)
J/c 7 (left side of dash)
J/c 8 (left side of dash)
Key interlock solenoid (in ignition switch assembly)
Kls+
Shift lock control ecu (under center console, beside shift lever)
Stop fuse 15a
Stop light switch (on bracket, above brake pedal)
Stp

STARTING/CHARGING

Charging Wiring Diagram for Lexus ES 300 1998

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List of elements for Charging Wiring Diagram for Lexus ES 300 1998:

(on left side of engine compartment) engine room junction block
Acc
Alt fuse 100a
Alt-s fuse 5a
Am2 fuse 30a
Ami fuse 40a
Battery
Battery ground
Canada
Charge warning light
Chg-
Comb- ination meter
Daytime running light main relay (behind center of dash)
E2 (engine harness, left front fender)
F11
Fusible link block (in engine room junction block)
Gauge fuse 10a
Generator
Ign fuse 5a
Ignition switch
Instrument panel junction block (behind left side of dash, above kick panel)
J/c 18, j/c 19 (right side of dash)
J18
J19
Nca
Off
Start
Usa

Starting Wiring Diagram for Lexus ES 300 1998

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List of elements for Starting Wiring Diagram for Lexus ES 300 1998:

Acc
Am2 fuse 30a
Battery
Battery ground
E10
E11
Engine control module (right side of dash)
Engine room junction block (on left side of engine compartment)
Fusible link block (in engine room junction block)
G206 (left instrument panel brace)
Ignition switch
Instrument panel junction block (behind left side of dash, above kick panel)
J/c 15 (left side of dash)
J/c 3 (left side of dash)
J/c 8, j/c 9 (left side of dash)
J11
J8 b
Main fuse 40a
Nca
Nsw
Off
Park/neutral position switch (on transaxle)
Red
Sta
Start
Start relay
Starter
Starter fuse 5a

SUPPLEMENTAL RESTRAINTS

Supplemental Restraint Wiring Diagram for Lexus ES 300 1998

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List of elements for Supplemental Restraint Wiring Diagram for Lexus ES 300 1998:

(behind left side of dash, above kick panel) instrument panel j/b
A29
A39
A40
Airbag sensor assembly (under center of dash, forward of center console)
Airbag squib (front passenger airbag assembly)
Airbag squib (steering wheel pad)
Cig fuse 15a
Combination meter
Data link connector 1 (near right front corner of engine)
Data link connector 2 (under left side of dash)
Data link connector 3 (under left side of dash)
Ecu-b fuse 10a
Engine room j/b (left side of engine compt)
G202 (left side of dash)
G206
Hot at all times
Hot in run or acc
Hot in run or start
Ign fuse 5a
Instrument panel j/b (behind left side of dash, above kick panel)
J/c 1 (left side of dash)
J/c 15 (left dash brace)
Left side airbag sensor (base of left "b" pillar)
Left side airbag squib
Left side pretensioner
Pnk
Right side airbag sensor (base of right "b" pillar)
Right side airbag squib
Right side pretensioner
Spiral cable
Srs warning indicator

TRANSMISSION

A/T Wiring Diagram for Lexus ES 300 1998

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List of elements for A/T Wiring Diagram for Lexus ES 300 1998:

"2" indic
"d" indic
"l" indic
"n" indic
"p" indic
"r" indic
(left radiator side support)
(right side of dash)
Batt
Cruise control ecu (left side of dash)
Data link connector 1 (right front of engine compt)
E10
E11
Efi fuse 15a
Efi relay
Electronic controlled transmission solenoid
Engine control module (behind right side of dash)
Engine controls
Engine coolant
Engine room j/b (left side of engine compt)
Eo1
Eo2
Eo3
G108
G120 (right side of surge tank)
G200 (left kick panel)
Gauge fuse 10a
Hot at all times
Hot in on or start
Hot in start
Idlo
Ign fuse 5a
Igsw
Instrument cluster (speedo- meter)
Instrument panel j/b (left side of dash)
J/c 24 (right side of dash)
J/c 25 (right side of dash)
J/c 26 (right side of dash)
J/c 27 (right side of dash)
J/c 3 (left side of dash)
J/c 30 (right side of dash)
J/c 32 (right side of dash)
J/c 7 (left side of dash)
Linear
Lockup
Mrel
Nc2+
Nc2-
Nsw
O/d main switch (below center console)
O/d off indic
Od1
Od2
Park/neutral position switch (on transaxle)
Pnk
Red
Sensor (on transaxle)
Sln+
Snl-
Spd
Starter fuse 5a
Starting/ charging
Stop fuse 15a
Stoplight switch (above brake pedal)
Stp
Te1
Temperature sensor (top of engine)
Throttle position sensor (on throttle body)
Thw
Vehicle speed
Vehicle speed sensor (ect) (top of transaxle)
Vta

TRUNK, TAILGATE, FUEL DOOR

Trunk, Tailgate, Fuel Door Wiring Diagrams for Lexus ES 300 1998

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List of elements for Trunk, Tailgate, Fuel Door Wiring Diagrams for Lexus ES 300 1998:

+b2
Door fuse 25a
Fuel lid & luggage compartment door opener switch
Fuel lid opener motor (on left side of luggage compartment)
G200 (left kick panel)
G407 (center rear of trunk)
Hot at all times
Instrument panel junction block (behind left side of dash)
J/c 16 (behind top center of dash)
J/c 34 & j/c 35 (right kick panel)
J34
J35
Luggage compartment door opener main switch (for lock-out) (in glove compartment)
Luggage compartment door opener motor (on center rear of deck lid)
Red
Theft deterrent ecu (under center of dash, forward of center console)
Tsw

WARNING SYSTEMS

Warning System Wiring Diagrams for Lexus ES 300 1998

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List of elements for Warning System Wiring Diagrams for Lexus ES 300 1998:

Buckle switch
C10
Dome fuse 7.5a
G206 (on left dash center support)
G308 (lower left "b" pillar)
Gauge fuse 10a
Hot at all times
Hot in on or start
I/p j/b (behind lower left side of dash)
Instrument cluster
Integration relay
J/b 2 (left front fender apron)
J/c 15 (behind center of dash)
J/c 37 (near lower left "b" pillar)
J/c 4 (behind left side of dash)
J12
Left front door courtesy switch (near left front door latch)
Red
Seat belt warning light
Unlock warning switch (in ignition switch)

WIPER/WASHER

Wiper/Washer Wiring Diagram for Lexus ES 300 1998

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List of elements for Wiper/Washer Wiring Diagram for Lexus ES 300 1998:

Combination switch
Engine room junction block (on left side of engine compt)
Front wiper motor (on left side of firewall)
G108 (left radiator side support)
G206
Hot in run or start
Instrument panel junction block (behind left side of dash, above kick panel)
Int
J/c 15 (under left side of radio)
J/c 17 (top center of dash)
J/c 31, j/c 32 (right kick panel)
J10
J31
J32
Off
Solid state
Washer motor (bottom of windshield washer reservoir)
Washer switch
Wiper fuse 20a
Wiper switch