All Wiring Diagrams for Lexus ES 300 2003

AIR CONDITIONING

Automatic A/C Wiring Diagram (1 of 2) for Lexus ES 300 2003

List of elements for Automatic A/C Wiring Diagram (1 of 2) for Lexus ES 300 2003:

(at dash reinforcement, right side) ie
(behind right side of dash) blower motor controller
(in dash harness, near right side footwell light)
A/c ambient temperature sensor (below left center of front bumper)
A/c control assembly (behind center of dash)
A/c room temperature sensor (behind center of dash)
A/c solar sensor (on top left side of dash)
A/c thermistor (behind right side of dash)
A/ci
A/cs
A14
A15
Ac1
Aif
Air
Air inlet control servo motor (behind right side of dash)
Air mix control servo motor (driver) (behind lower left center of dash)
Air mix control servo motor (passenger) (behind right center of dash)
Air vent mode control servo motor (behind center of dash)
Amdc
Amdh
Ampc
Amph
Aod
Aof
Blower motor (behind (right side of dash)
Blw
Cds fuse 30a
Def
E4 (near left front turn signal light)
Ed (at left fender)
Engine room j/b (on left side of engine compt)
Face
Fan 1 relay
Gnd
Hot at all times
Htr fuse 50a
Mfrs
Mrec
Pnk
Psw
Radiator fan motor
Rdi fuse 30a
S5-1
S5-2
S5-3
S5-4
Sg-1
Sg-2
Sg-3
Sg-4
Sg-5
Sg-6
Spd
T11
Tam
Telephone computer (on left side of luggage compt)
Teli
Tpd
Tpi
Tpo
Tpp
Tsd
Tsl
Tsp
Tsr
Water temperature switch 1 (on right front of engine compt)
Water temperature switch 2 (on rear of engine)

Automatic A/C Wiring Diagram (2 of 2) for Lexus ES 300 2003

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List of elements for Automatic A/C Wiring Diagram (2 of 2) for Lexus ES 300 2003:

(at dash brace, right side)
(at left left fender)
(behind lower right side of dash)
A/c condenser fan motor (on right front of engine compartment)
A/c diode (in front of left front strut tower)
A/c lock sensor & a/c magnetic clutch (on left front side of engine) a13
A/ci
A/cs
A13
A22
A24
A26
A29
A55
A56
A57
A59
A82
A87
Acmg
B105
B106
B109
B118
B125
B126
B129
B54
B64
B74
B84
B86
B98
Combination meter
Driver side j/b (behind left side of dash)
Eb (at right fender)
Ecu-b fuse 10a
Ef (at intake side of cylinder block)
Engine control module (behind right side of dash)
Engine room r/b (on left side of engine compt)
Fan 2 relay
Fan 3 relay
Fan rly fuse 10a
G24
Gauge 1 fuse 10a
Hot at all times
Hot in on or start
Htr fuse 10a
Htr relay
Ia (at dash reinforcement, left side)
Junction connector
Lcki
Mg clt relay
Passenger side j/b (behind right side of dash)
Pressure switch (at right front corner of engine compt)
Red
Thr
Thwo
W/ vsc
W/o vsc

ANTI-LOCK BRAKES

Anti-lock Brakes Wiring Diagram, with VSC (1 of 2) for Lexus ES 300 2003

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List of elements for Anti-lock Brakes Wiring Diagram, with VSC (1 of 2) for Lexus ES 300 2003:

(mounted on left front wheel hub assembly) left front abs speed sensor
+bi
Abs & ba & trac & vsc actuator (on left side of engine compt)
Abs 2 fuse 40a
Abs 3 fuse 40a
Abs 4 fuse 7.5a
Abs mtr relay
Abs r/b (on left front corner of engine compt)
Abs sol relay
Ast
Brake fluid level warning switch (on brake fluid level reservoir)
Driver side j/b (behind left side of dash)
Ea (at right fender)
Eb (at right fender)
Ecu-b fuse 10a
Ed (at left fender)
Engine room j/b (on left side of engine compt)
Fl+
Fl-
Fr+
Fr-
Fss
Gnd1
Gnd2
Gnd3
Gnd4
Gss
Hot at all times
Hot in on or start
Junction connector 3 (behind left side of dash)
Lbl-
Mrf
Nca
Pmc
Pmc2
Pressure sensor 1
Pressure sensor 2
Red
Relay
Right front abs speed sensor (mounted on right front wheel hub assembly)
Sflh
Sflr
Sfrh
Sfrr
Skid control ecu (behind right side of dash)
Sm1+
Sm1-
Sm2+
Sm2-
Src1
Src2
Srlh
Srlr
Srm1
Srm2
Srrh
Srrr
Vcm
Vcm2

Anti-lock Brakes Wiring Diagram, with VSC (2 of 2) for Lexus ES 300 2003

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List of elements for Anti-lock Brakes Wiring Diagram, with VSC (2 of 2) for Lexus ES 300 2003:

(behind left center of dash) junction connector 4
(behind right side of dash) passenger side j/b
(on steering column) steering sensor
+bo
A/t indicator l
A110
A51
A57
A61
A87
Abs ind
B27
B28
B29
B30 a100
B68
B70
B85
B86
B96 b75
Bat
Brake
Combi- nation meter
Computer data lines system
Connector 6 (behind upper right side of dash)
Csw
D/g
Driver side j/b (behind left side of dash)
Ecu-ig fuse 10a
Electronic suspension system
Eng+
Eng-
Engine control module (behind right side of dash)
Engine room j/b (on left side of engine compt)
Ess
Fro
G11
Gauge 1 fuse 10a
Gauge2 fuse 10a
Gl1
Gl2
Gyaw
Hard
Headlights system
Hot at all times
Hot in on or start
Ia (at dash reinfor- cement, left side)
Ib (at dash brace, left side)
Ig1
Ig2 fuse 10a
Ind
Junction
Junction connector 1 (behind upper left side of dash)
Lblo
Left rear abs speed sensor (mounted on left rear wheel hub assembly)
Light switch (on tran- saxle)
Micro computer
Nca
Neo
Parking brake switch (behind left side of dash)
Passenger side j/b (behind right side of dash)
Pkb
Pnk
Power
Red
Right rear abs speed sensor (mounted on right rear wheel hub assembly)
Rl+
Rl-
Rr+
Rr-
Skid control ecu (behind right side of dash)
Slip ind
Sp1
Ss-
Ss1+
Ss1-
Stop fuse 15a
Stoplight switch (behind left side of dash)
Stp
Trac off ind
Trac off switch
Trc+
Trc-
Trig
Vsc ind
Vsc warning buzzer (behind center of dash)
Vscw
Vys
Yaw
Yaw rate sensor (below rear of center floor console)
Yaw2
Yss

Anti-lock Brakes Wiring Diagram, without VSC for Lexus ES 300 2003

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List of elements for Anti-lock Brakes Wiring Diagram, without VSC for Lexus ES 300 2003:

(at right fender) ea
(at right side of
+bm
+bs
A/t indicator light switch (on transaxle)
A110
A57
A87
A90
Abs 2 fuse 40a
Abs 3 fuse 40a
Abs ind
B55
B65
B66
B89
B99
Brake
Brl
Combination meter
Computer data lines system
D/g
Driver side j/b (behind left side of dash)
Eb (at right fender)
Ecu-ig fuse 10a
Engine compt)
Engine room j/b (on left side of eng compt)
Fl+
Fl-
Fr+
Fr-
Fro
G11
G13
G19
G21
G23
Gauge1 fuse 10a
Gauge2 fuse 10a
Gnd1
Gnd2
Headlights system
Hot at all times
Hot in on or start
Ig1
Ind
Left front abs speed sensor (mounted on left front wheel hub assembly)
Left rear abs speed sensor (mounted on left rear wheel hub assembly)
Micro computer
P/n
Parking brake switch (behind left side of dash)
Passenger side j/b (behind right b76 side of dash)
Passenger side j/b (behind right side of dash)
Pkb
Pnk
Power
Red
Right front abs speed sensor (mounted on right front wheel hub assembly)
Right rear abs speed sensor (mounted on right rear wheel hub assembly)
Rl+
Rl-
Rr+
Rr-
Skid control ecu with actuator
Sp1
Stop fuse 15a
Stoplight switch (behind left side of dash)
Stp

ANTI-THEFT

Power Door Locks Wiring Diagram (1 of 2) for Lexus ES 300 2003

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List of elements for Power Door Locks Wiring Diagram (1 of 2) for Lexus ES 300 2003:

(at right fender) eb
(at right front corner of engine compt) keyless buzzer
A36
A40
A55
A56
A60
A66
A75
A86
Acc
Act+
Act-
Actd
Alt fuse 120a
B11
B26
B27
B28
B36
B46
B47
B48
B56
B68
Bc (at front side of left rear wheelwell)
Bd (at front side of right rear wheelwell)
Bdr1
Bdr2
Body ecu (attached to driver side j/b)
Buzzer
Bzr
Combination meter
Dome fuse 7.5a
Door 2 fuse 25a
Door ind
Door lock control receiver (at right "c" pillar)
Driver side j/b (behind left side of dash)
Drlp
Dtcy
Ecu-acc fuse 5a
Ecu-b fuse 10a
Ecu-ig fuse 10a
Engine room r/b (on left side of engine compt)
Exterior lights system
G14
G22
Gnd
H10
H11
H12
Haz
Horn
Hot at all times
Hot in on or acc
Hot in on or start
Hrly
Ia (at dash reinforcement, left side)
Ib (at dash brace, left side)
Id (at dash brace, right side)
Interior lights system
Junction connector 1 (behind upper left side of dash)
Junction connector 12 (forward of left rear fenderwell)
Junction connector 13 (near right front of luggage compartment)
Junction connector 4 (behind left center of dash)
Junction connector 6 (behind upper right side of dash)
K11
K12
K16
Keyless buzzer on/off switch
Ksw
Left front door courtesy switch
Left rear door courtesy switch
Lgcy
Lsr
Luggage compartment door opener motor & luggage compartment light switch
Luggage compartment door opener switch
Main luggage compartment door opener switch
Mpx1
Mpx2
Mpx3
Passenger side j/b (behind right side of dash)
Pcty
Prg
Pwr 1 fuse 30a
Pwr 2 fuse 20a
Rda
Red
Right front door courtesy switch
Right rear door courtesy switch
Rlcy
Rrcy
Sgnd
Sig
Tail relay
Tkul
Tr+
Trly
Turn signal flasher relay (behind left kick panel)
Unlock warning switch
W/ vsc w/o vsc

Power Door Locks Wiring Diagram (2 of 2) for Lexus ES 300 2003

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List of elements for Power Door Locks Wiring Diagram (2 of 2) for Lexus ES 300 2003:

(15-23 not used)
(7-9 not used)
(at left fender) ed
(behind center of dash) a/c control assembly
(behind left side of dash) driver side j/b
(behind right side of dash) engine control module
(behind right side of dash) passenger side j/b
(in dash harness, near accelerator position sensor) i2
(near hood latch) engine hood courtesy switch
(w/ vsc)
(w/o vsc) b24 b44
+b1
A14
Ant1
Ant2
B13 b33
B14 b34
Ba (under driver's seat)
Batt
Bdr
Code
Cpub
Door 1 fuse 25a
Driver door ecu (in middle of left front door)
Driver side j/b (behind left side of dash)
Dswh
E01
E02
E03
E04
E05
E10
Ee (at rear of cylinder head)
Ef (at intake side of cylinder block)
Efi fuse 20a
Efi relay
Engine room j/b (on left side of engine compt)
Eom
Front passenger door ecu (in middle of right front door)
G17
G20
Gnd
H11
Head relay
Headlights system
Horn fuse 10a
Horn relay
Horns system
Hot at all times
Hot in on or start
Ia (at dash reinforcement, left side)
Ib (at dash brace)
If (at dash reinforcement, right side)
Ig2 fuse 10a
Igsw
Imld
Ind
Junction connector (behind lower right side of dash)
Junction connector 1 (behind upper left side of dash)
Junction connector 4 (behind left center of dash)
Junction connector 6 (behind upper right side
Junction connector 8 & 9 (behind upper right side of dash)
Keye
Ksw
Kul
Left front door key lock & unlock switch, door lock motor & door lock detection switch
Left rear door lock motor & door unlock detection switch
Lswd
Lswp
Main fuse 40a
Me01
Mpx1
Mpx2
Mrel
Of dash)
Red
Right front door lock motor & door unlock detection switch
Right rear door lock motor & door unlock detection switch
Rxck
Sh-
Sig
Theft deterrent ecu (behind right side of dash)
Theft deterrent horn (on left rear of engine compt)
Transponder key amplifier (on right side of steering column)
Transponder key coil
Txct
Unlock warning switch

BODY CONTROL MODULES

Body Control Modules Wiring Diagram for Lexus ES 300 2003

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List of elements for Body Control Modules Wiring Diagram for Lexus ES 300 2003:

Acc
Act+
Act-
Actd
Altl
Anti-lock brakes system
Anti-theft system
Auto
B11
B12
Bdr1
Bdr2
Body ecu (attached to driver side j/b)
Bzr
Cltb
Clte
Clts
Computer data lines system
Cyl
Dcty
Door 1 fuse 25a
Door 2 fuse 25a
Door locks system
Driver side j/b (behind left side of dash)
Drl
Drlp
Ecu-acc fuse 5a
Ecu-b fuse 10a
Ecu-ig fuse 10a
Engine room j/b (on left side of engine compt)
Exterior lights system
Fspt
G11
G14
G22
Gnd
Gsw
Haz
Head
Headlights system
Horn
Horns system
Hot at all times
Hot in on or acc
Hot in on or start
Hrly
Ia (at dash reinforcement, left side)
Id (at dash brace, right side)
Instrument cluster system
Interior lights system
Ksw
Lgcy
Lsr
Mpx1
Mpx2
Mpx3
Mpx4
Mpx5
Obd2
Pcty
Pkb
Pnk
Power tops system
Prg
Pws
Rda
Red
Rlcy
Rrcy
Sdrl
Sgnd
Sig
Spd
Starting/charging system
Tail
Tkul
Tr+
Transmissions system
Trly
Trunk, tailgate, fuel doors system

COMPUTER DATA LINES

Computer Data Lines Wiring Diagram for Lexus ES 300 2003

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List of elements for Computer Data Lines Wiring Diagram for Lexus ES 300 2003:

7.5a
A/c
A22
A31
Absorber control ecu (behind left end of dash)
Air bag sensor assembly (under front of center floor console)
B109
B11
B118
B12
B129
B21
B22
B32
B41
B42
B50
B51
B52
B58
B60
B62
B70
B71
B72
B78
B80
B91
B98
Bat
Body ecu (attached to driver side j/b)
D/g
Data link connector 3 (at lower left side of dash)
Driver door ecu (in middle of left front door)
Driver side j/b (behind left side of dash)
Ef (at intake side of cylinder block)
Engine control module (behind right side of dash)
Eom
Front passenger door ecu (in middle of right front door)
G18
Headlight beam level control ecu (behind lower center of dash)
Hot at all times
Ia (at dash reinforcement, left side)
Junction connector 11 (behind lower right side of dash)
Junction connector 3 (behind left side of dash)
Left rear door ecu (in middle of left rear door)
Mpx1
Mpx2
Mpx3
Mpx4
Mpx5
Obd fuse
Obd2
Passenger side j/b (behind right side of dash)
Pnk
Prst
Red
Right rear door ecu (in middle of right rear door)
Sil
Skid control ecu (behind right side of dash)
Skid control ecu w/ actuator (w/ vsc: at right side of engine compt)
Tem
Theft deterrent ecu (behind right side of dash)
Vsc
W/
W/ vsc
W/o
W/o vsc
Wfse

COOLING FAN

Cooling Fan Wiring Diagram for Lexus ES 300 2003

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List of elements for Cooling Fan Wiring Diagram for Lexus ES 300 2003:

(in dash harness, near grommet on right side of firewall) i6
A/c condenser fan motor (on right front of engine compt)
A/c diode (in front of left front strut tower)
Acmg
Air conditioning system
Cds fuse 30a
Driver side j/b (behind left side of dash)
E10
Eb (at right fender)
Ec (at left fender)
Ed (at left fender)
Engine control module (behind right side of dash)
Engine controls system
Engine coolant temperature sensor (on top front of engine)
Engine room j/b (on left side of engine compt)
Engine room r/b (on left side of engine compt)
Fan 1 relay
Fan 2 relay
Fan 3 relay
Fan rly fuse 10a
Hot at all times
Hot in on or start
Pressure switch (at right front corner of engine compt)
Radiator fan motor
Rdi fuse 30a
Red
Thw
Water temperature switch 1 (on right front of engine compt)
Water temperature switch 2 (on rear of engine)

CRUISE CONTROL

Cruise Control Wiring Diagram for Lexus ES 300 2003

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List of elements for Cruise Control Wiring Diagram for Lexus ES 300 2003:

(at lower left side of dash) data link connector 3
(behind left side of dash) stoplight switch
(behind right side of dash) passenger side j/b
(in dash harness, near accelerator position sensor)
(in dash harness, near grommet on right side of firewall) i6
+b1
+bm
A/t indicator light switch (on transaxle)
A104
A114
A51
A57
A82
A87
A91
A92
A94
Accelerator pedal position sensor (behind left center of dash)
B102
B107
B108
B109
B118
B122
B127
B128
B129
B51
B54
B64
B71
B74
B77
B78
B82
B84
B91
B97
B98
Batt
Cancel
Ccs
Combination meter
Combination switch
Cruise
Cruise control
Cruise ind
Driver side j/b (behind left side of dash)
E01
E02
E03
E04
E05
E10
Ecc
Ed (at left fender)
Ee (at side of cylinder head)
Ef (at intake side of cylinder block)
Efi fuse 20a
Efi relay
Eng+
Eng-
Engine control module (behind right side of dash)
Engine room j/b (on left side of engine compt)
Eom
Epa
Epa2
Etcs fuse 10a
Firewall)
G13
G17
G20
Gauge1 fuse 10a
Gauge2 fuse 10a
Ged1
Hot at all times
Hot in on or start
Id (at dash brace, right side)
Ig2 fuse 10a
Igsw
Junction connector (behind lower right side of dash)
Main switch
Me01
Micro computer
Mrel
Mt4
Nca
Neo
Nssd
Passenger side j/b (behind right side of dash)
Power
Red
Res/ acc
Set/ coast
Skid control ecu (behind right side of dash)
Spd
Speedometer
St1-
Stop fuse 15a
Stp
Throttle control motor (on throttle body)
Throttle position sensor (on throttle body)
Transmission control switch
Transmissions system
Trc+
Trc-
Vat2
Vcp2
Vcpa
Vpa
Vpa2
Vta1
W/ vsc w/o vsc
W/o vsc w/ vsc

DEFOGGERS

Defoggers Wiring Diagram for Lexus ES 300 2003

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List of elements for Defoggers Wiring Diagram for Lexus ES 300 2003:

A/c control assembly (behind center of dash)
A15
A24
A55
Ba (under driver's seat)
Choke coil (at left "c" pillar)
Def fuse 40a
Def relay
Driver side j/b (behind left side of dash)
Gauge 2 fuse 10a
Gnd
Heater
Hot at all times
Hot in on or start
Ia (at dash reinforcement, left side)
If (at dash reinforcement, right side)
K18
Left remote control mirror
Mir htr fuse 10a
Noise filter
Passenger side j/b (behind right side of dash)
Rdef
Rear window defogger
Right remote control mirror
W/ driving position memory
W/o driving position memory

ELECTRONIC SUSPENSION

Electronic Suspension Wiring Diagram for Lexus ES 300 2003

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List of elements for Electronic Suspension Wiring Diagram for Lexus ES 300 2003:

(in dash harness, near accelerator position sensor) i2
(on left front strut tower)
(on steering column) steering sensor
A21
A22
Absorber control ecu (behind left end of dash)
Absorber control switch
B11
B12
B20
B70
B71
B72
B89
B99
Combination meter
Data link connector 3 (at lower left side of dash)
Driver side j/b (behind left side of dash)
Eb (at right fender)
Ed (at left fender)
Engine controls system
Ess
Fal+
Fal-
Fan rly fuse 10a
Far+
Far-
Fbl+
Fbl-
Fbr+
Fbr-
Fro
Ggnd
Gl1
Gnd
Hard
Headlights system
Hot at all times
Hot in on or start
Ia (at dash reinforcement, left side)
Interior lights system
J/c 1 (behind upper left side of dash)
J/c 12 (forward of left rear fenderwell)
J/c 13 (near right front of luggage compt)
J/c 3 (behind left side of dash)
J/c 4 (behind left center of dash)
Left front absorber control actuator
Left front acceleration control sensor (behind upper right side of dash)
Left rear absorber control actuator (on top of left rear shock absorber)
Mod2
Passenger side j/b (behind right side of dash)
Pnk
Ral+
Ral-
Rar
Rar-
Rbl+
Rbl-
Rbr+
Rbr-
Red
Right front absorber control actuator (on right front strut tower)
Right rear absorber control actuator (on top of right rear shock absorber)
Right rear acceleration control sensor (at base of right "c" pillar)
Sbl
Sbr
Sgfl
Sgl
Sgr
Sgrr
Sil
Skid control ecu (behind right side of dash)
Ss2+
Ss2-
Stop fuse 15a
Stoplight switch (behind left side of dash)
Stp
Sw1
Sw2
Tach
Tem
Vgs

ENGINE PERFORMANCE

3.0L

3.0L, Engine Performance Wiring Diagram (1 of 6) for Lexus ES 300 2003

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List of elements for 3.0L, Engine Performance Wiring Diagram (1 of 6) for Lexus ES 300 2003:

(behind left side of dash) driver side j/b
(left front fender)
(left side of dash) i2
(under rear of vehicle) vsv (vapor pressure sensor)
+b1
+bm
A/c system
A/ci
A/cs
A/f fuse 25a
A104
A110
A114
A51
A82
A90
A91
A92
A94
Acmg
B100
B101
B103
B104
B106
B107
B109
B110
B111
B118
B119
B120
B121
B123
B124
B126
B127
B129
B130
B16
B26
B32
B36
B43
B46
B51
B52
B58
B63
B69
B71
B72
B74
B77
B78
B79
B80
B81
B83
B84
B86
B87
B89
B91
B94
B97
B98
B99
Batt
C/ opn relay
Ccs
Code
Cruise control system
Efi fuse 20a
Efi relay
Els
Els2
Eng+
Eng-
Engine control module (ecm) (behind right side of dash)
Engine room j/b (on left side of engine compt)
Eom
Epa
Epa2
Etcs fuse 10a
G17
G20
Hot at all times
Hot in on or start
Ig2 fuse 10a
Igsw
Imld
K17
Ksw
Mrel
Neo
Passenger side j/b (behind right side of dash)
Pnk
Ptnk
Red
Rxck
Sil
Spd
St1-
Stp
Tach
Tbp
Thr
Thwo
Trc+
Trc-
Txct
Vcp2
Vcpa
Vpa
Vpa2
W/ vsc
W/o vsc
Wfse

3.0L, Engine Performance Wiring Diagram (2 of 6) for Lexus ES 300 2003

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List of elements for 3.0L, Engine Performance Wiring Diagram (2 of 6) for Lexus ES 300 2003:

(behind left side of dash) stoplight switch
(in fuel tank) fuel pump & fuel sender
(left dash reinforcement)
A/f htr relay
Accelerator pedal position sensor (behind left center of dash)
Code
Data link connector 3 (at lower left side of dash)
Driver side j/b (behind left side of dash)
Eng+
Eng-
Engine room r/b (on left side of engine compt)
G13
G16
Gauge1 fuse 10a
Gauge2 fuse 10a
Gnd
Hot at all times
Hot in on or start
Hot w/ def relay energized
Hot w/ tail relay energized
J/c 12 (forward of left rear fenderwell)
J/c 4 (behind left center of dash)
J/c 6 (behind upper right side of dash)
Left vvt solenoid (on left rear of engine)
Mir htr fuse 10a
Neo
Pnk
Ptnk
Red
Right vvt solenoid (on right rear of engine)
Rxck
Sil
Skid control ecu (behind right side of dash)
Stop fuse 15a
Tail fuse 10a
Transponder key amplifier (on right side of steering column)
Trc+
Trc-
Txct
Unlock warning switch
Vapor pressure sensor (under rear of vehicle)
Vcc
Wfse

3.0L, Engine Performance Wiring Diagram (3 of 6) for Lexus ES 300 2003

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List of elements for 3.0L, Engine Performance Wiring Diagram (3 of 6) for Lexus ES 300 2003:

(behind left side of dash) driver side j/b
(behind right side of dash) passenger side j/b
(dash harn, near stereo component amplifier)
(on transaxle) a/t indicator light switch (integral to park/neutral position switch)
A55
A57
A85
A87
Braided
Ccv
Cooling fans system
E03
Ee (left side of cylinder head)
Ef (intake side of cylinder block)
Engine control module (ecm) (behind right side of dash)
Evp1
Ge01
Ht1b
Ht2b
Ia (left dash reinforcement)
Left vvt sensor (on left rear of engine)
Me01
Mt2
Mt4
Mtd
Mtl
Nssd
Nssl
Oc1+
Oc1-
Oc2+
Oc2-
Power steering oil pressure switch (near front of engine)
Red
Throttle control motor (on throttle body)
Transmission control switch
Vsv (canister closed valve) (at left rear of engine compt)
Vsv (evap) (on top of engine)
Vv1+
Vv2+
Vv2-
Vvl+
Vvl-

3.0L, Engine Performance Wiring Diagram (4 of 6) for Lexus ES 300 2003

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List of elements for 3.0L, Engine Performance Wiring Diagram (4 of 6) for Lexus ES 300 2003:

Combination meter
Counter gear speed sensor (near rear of engine)
E2 (engine harn, near fuel inj 2)
Ef (intake side of cylinder block)
Gnd
Igf
Ignition coil & igniter 1
Ignition coil & igniter 2
Ignition coil & igniter 3
Ignition coil & igniter 4
Ignition coil & igniter 5
Ignition coil & igniter 6
Igt
Micro computer
Mil ind
Noise filter (ignition) (at top of engine)
Pnk
Power
Red
Right vvt sensor (on right rear of engine)
Speedometer
Tachometer
Turbine speed sensor (near left rear of engine)

3.0L, Engine Performance Wiring Diagram (5 of 6) for Lexus ES 300 2003

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List of elements for 3.0L, Engine Performance Wiring Diagram (5 of 6) for Lexus ES 300 2003:

(behind lower right side of dash) j/c 11
(dash harn, near grommet on right side of firewall)
(dash harn, near j/c 10)
(engine harn, near power steering oil pressure switch)
Acc
E2 (engine harn, near fuel inj 2)
E2g
Ef (intake side of cylinder block)
Engine coolant temp sensor (on top front of engine)
Engine room j/b (on left side of engine compt)
Fuel injector
Heated oxygen sensor (bank 1 sensor 2) (near left side of engine)
Heated oxygen sensor (bank 2 sensor 2) (on left exhaust manifold)
Hot at all times
Hot in on or start
I6 (dash harn, near grommet on right side of firewall)
Ign fuse 15a
Ignition switch
L10
Lock
Mass airflow meter (on left side of engine compt, part of air intake assembly)
Pnk
Red
Start
Tha
Vsv (acis 1) (on top of engine)
Vsv (acis 2) (on top of engine)
Vsv (acm) (on left front of engine compt)
Vsv (aicv) (on left rear of engine)

3.0L, Engine Performance Wiring Diagram (6 of 6) for Lexus ES 300 2003

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List of elements for 3.0L, Engine Performance Wiring Diagram (6 of 6) for Lexus ES 300 2003:

(dash harn, near stereo component amplifier)
(right side of dash)
(right side of dash) i6
Aci1
Acis
Acm1
Af+
Af-
Afl+
Afl-
Afr+
Afr-
Aicv
Air fuel ratio sensor (bank 1 sensor 1) (on right side of engine, in exhaust pipe)
Air fuel ratio sensor (bank 2 sensor 1) (on left side of engine, in exhaust pipe)
Crankshaft position sensor (on lower left front of engine)
Dsl
E01
E02
E04
E05
E1 ot
E1 s4
E10
E2 slt+
E2g
Ee (left side of cylinder head)
Electronically controlled transmission solenoid (on transaxle)
Engine control module (ecm) (behind right side of dash)
Engine room j/b (on left side of engine compt)
Hafl
Hafr
I6 (dash harn, near grommet on right side of firewall)
Igf
Igt1
Igt2
Igt3
Igt4
Igt5
Igt6
Inj 1
Inj 2
Inj 3
Inj 4
Inj 5
Inj 6
Knkl
Knkr
Knock sensor 1 (on top of engine)
Knock sensor 2 (on top of engine)
Nc+
Nc-
Ne+
Ne-
Nsw
Nt+
Nt-
Ox1b
Ox2b
P/n
Park/ neutral position switch (on transaxle)
Pnk
Red
Sl1+
Sl1-
Sl2+
Sl2-
Sl3+
Sl3-
Slt+
Slt-
Sta
Tha
Tho
Throttle position sensor (on throttle body)
Thw
Vta1
Vta2

EXTERIOR LIGHTS

Back-up Lamps Wiring Diagram for Lexus ES 300 2003

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List of elements for Back-up Lamps Wiring Diagram for Lexus ES 300 2003:

(in body harness, behind left rear combination light) b18
B18
Back- up
Back-up light switch (on transaxle)
Driver side j/b (behind left side of dash)
Gauge 2 fuse 10a
Hot in on or start
Junction connector 12 (forward of left rear fenderwell)
Left rear combination light
Right rear combination light

Exterior Lamps Wiring Diagram for Lexus ES 300 2003

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List of elements for Exterior Lamps Wiring Diagram for Lexus ES 300 2003:

(at left fender) ec
(at right fender) eb
(behind left center of dash) j/c 4
(behind left kick panel) turn signal flasher relay
(except
(in dash harness, near accelerator position sensor) i2
(w/ vsc) b74 b54
(w/o vsc)
A57
A58
A77
A87
A88
A97
Alt fuse 120a
B13 (at top of left wheel- well)
B15
B15 (at left side of trunk)
B17
B17 (behind left rear combination light)
B18
B18 (in body harness, behind left rear combination light)
B20
B84 (w/ vsc) (w/o vsc) b64
Back- up
Back-up lamps circuit
Be (at lower center of back panel)
Body ecu
Combi- nation switch
Combination meter
Combination switch
Driver side j/b (behind left side of dash)
Ehw
Engine room j/b (on left side of engine compt)
Engine room r/b (on left side of engine compt)
G13
G15
Gauge 1 fuse 10a
Gnd
Haz
Haz fuse 15a
Hazard switch
Head
High mounted stop light
Hot at all times
Hot in on or start
Hot w/ tail relay energized
Ia (at dash reinforce- ment, left side)
Ib (at dash brace, left side)
Id (at dash brace, right side)
J/c 1 (behind upper left side of dash)
J/c 12 (forward of left rear fenderwell)
J/c 4 (behind left center of dash)
J/c 6 & 7 (behind upper right side of dash)
K15
K19
K20
Left front side marker light
Left front turn signal light
Left license plate light
Left parking light
Left rear combination light
Left rear side marker light
Left rear turn signal light
Left turn ind
Light ctrl sw
Light failure sensor (near left "c" pillar)
Micro computer
Noise filter
Off
Panel fuse 10a
Passenger side j/b (behind right side of dash)
Power
Rear lights ind
Red
Relay
Right front side marker light
Right front turn signal light
Right license plate light
Right parking light
Right rear combination light
Right rear side marker light
Right rear turn signal light
Right turn ind
St+
St-
Stop
Stop fuse 15a
Stop- light switch (behind left side of dash)
Tail
Tail fuse 10a
Tail ind
Trly
Usa)

GROUND DISTRIBUTION

Ground Distribution Wiring Diagram (1 of 3) for Lexus ES 300 2003

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List of elements for Ground Distribution Wiring Diagram (1 of 3) for Lexus ES 300 2003:

(*)
(left side of engine compt) engine room j/b
(left side of engine compt) engine room r/b
(right side of dash) passenger side j/b
(w/ abs) (w/ vsc)
(w/ mem) (w/o mem)
(w/ vsc) (w/ abs)
(w/o m levinson) (w/ m levinson) (w/o m levison & navigation sys)
A/f htr relay
A12 b12 c7
A21
Abs & ba & trac & vsc actuator
Absorber control ecu
Adj pdl relay
Airbag sensor assembly
B11
B14
B23
B28
B4 (right front door)
B54 b74
B84 b64
Blower motor controller
Body ecu
Brake fluid level warning switch
Combination meter
D20
Drl 3 relay
Drl 4 relay
Drl resistor
E1 (right front of engine compt)
E4 (left front of engine compt)
Ea (right front fender)
Eb (right front fender)
Ec (left front fender)
Ed (left front fender)
Efi relay
Engine hood courtesy switch
Fan 2 relay
Front passenger door ecu
Front wiper motor
Htr relay
Ic (right dash brace)
Id (right dash brace)
Ie (right dash reinforcement)
If (right dash reinforcement)
Keyless buzzer
Left front absorber control ecu
Left front fog light
Left front side marker light
Left front turn signal light
Left headlight (low)
Left headlight control ecu
Left parking light
Passenger side j/b (right side of dash)
Pressure switch
Radiator fan motor
Radio & player
Radio & player w/ display
Right front absorber control actuator
Right front fog light
Right front side marker light
Right front turn signal light
Right headlight (low)
Right headlight control ecu
Right mirror heater
Right parking light
Skid control ecu
Skid control ecu w/ actuator
St relay
Stereo component amplifier
W/ drl
W/ hid
W/ navi- gation system
W/ vsc
W/o hid
W/o navi- gation system
W/o vsc, w/ abs
Washer level sensor
Water temperature switch 1

Ground Distribution Wiring Diagram (2 of 3) for Lexus ES 300 2003

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List of elements for Ground Distribution Wiring Diagram (2 of 3) for Lexus ES 300 2003:

(left rear door ecu
(left side of driver's seat back) b22
(top center of engine) e2
(w/ abs) (w/ vsc)
(w/ mem) (w/o mem)
(w/ vsc) (w/ abs)
A/c lock sensor
A15
A17
B1 (driver's door)
B11 (front of right rear quarter wheel house)
B128 b108
B129 b109
B13
B18
B20
B20 (right rear of trunk)
B24 (seat back of passenger's seat)
B5 (under driver's seat)
B7 (left rear door)
B78 b58
B98 b118
B98 b78
Ba (under front passenger's seat)
Bb (under front passenger's seat)
Bc (front of left rear quarter wheel house)
Bd (front of right rear quarter wheel house)
Be (center rear of trunk)
Combination switch
Data link connector
Door lock control receiver
Driver door ecu
Driving position memory switch
Ee (left side of cylinder head)
Ef (intake side of cylinder block)
Engine control module
Engine oil level sensor
Fuel lid opener solenoid
Fuel pump
Heated oxygen sensor (bank 1 sensor 2)
Heated oxygen sensor (bank 2 sensor 2)
High mounted stop light
I6 (right side of dash)
Ignition coil & igniter 1
Ignition coil & igniter 2
Ignition coil & igniter 3
Ignition coil & igniter 4
Ignition coil & igniter 5
Ignition coil & igniter 6
J/c j11 (right side of dash)
J/c j12
J/c j13
Left buckle switch
Left license plate light
Left mirror heater
Left rear absorber control actuator
Left rear combi- nation light
Left rear door unlock detection switch
Left rear side marker light
Left rear turn signal light
Left seat heater
Light failure sensor
Memory seat ecu
Navi- gation ecu
Of driver's seat)
Passenger side j/b (right side of dash)
Power seat control switch (driver's seat)
Power seat control switch (front passenger)
Power seat control switch (lumbar control)
Rear of trunk lid)
Rear sunshade control relay
Right buckle switch
Right license plate light
Right rear absorber control actuator
Right rear combi- nation light
Right rear door ecu
Right rear door unlock detection switch
Right rear side marker light
Right rear turn signal light
Right seat heater
Stereo component amplifier
Telephone computer
W/ mark levinson

Ground Distribution Wiring Diagram (3 of 3) for Lexus ES 300 2003

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List of elements for Ground Distribution Wiring Diagram (3 of 3) for Lexus ES 300 2003:

(center front of roof)
(w/ abs) (w/ vsc)
(w/ vsc) (w/ abs)
A/c control assembly
A115
A116
A24
A55
A65
A75
A85
Absorber control switch
Acc relay
Adjustable pedal switch
Airbag sensor assembly
B20
B21
B27
B30
B40 b20
B50 b70
B80 b60
B90 b70
Body ecu
Cigarette lighter
Clock
Combination meter
Combination switch
Data link connector
Driver side j/b (left side of dash)
Glove box light & switch
Hazard switch
Headlight beam level control ecu
Ia (left dash reinforcement)
Ib (left dash brace)
Ig1 relay
Inner mirror & compass
Interior light
J/c j1 (left side of dash)
J/c j4
Left vanity mirror
Luggage compartment door opener switch
Memory mirror ecu
Moon roof control ecu & motor
Noise filter 1 1
Noise filter 2
Overhead j/b
Passenger side j/b (right side of dash)
Power outlet
Rain sensor
Rear sunshade control switch
Remote control mirror switch
Right vanity mirror
Shift lock control ecu
Steering sensor
Theft deterrent ecu
Trac off switch
Transponder key amplifier
Turn signal flasher relay
Unlock warning switch
W/ moon roof
W/o auto wiper
W/o memory system
Wiper relay

HEADLIGHTS

Headlamps Wiring Diagram, with DRL (1 of 2) for Lexus ES 300 2003

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List of elements for Headlamps Wiring Diagram, with DRL (1 of 2) for Lexus ES 300 2003:

(behind left side of dash) driver side j/b
(on left side of engine compartment) engine room j/b
(w/ vsc) b92
(w/o vsc) b72
A55
A85
Acc
Altl
Auto
Automatic light control sensor (on top left side of dash)
B11
B62 (w/o vsc)
B82 (w/ vsc)
Body ecu
C10
Cltb
Clte
Clts
Combination meter
Combination switch
Dcty
Dimmer switch
Driver side j/b (behind left side of dash)
Drl
Eb (at right fender)
Ec (at left fender)
Ecu-acc fuse 5a
Ecu-b fuse 10a
Ecu-ig fuse 10a
F j8
Flash
Fog fuse 15a
Fog relay
Foglight switch
Front fog indicator
G11
G12
Gnd
H11
Head
Head indicator (usa)
Head relay
High
High beam indicator
Hot at all times
Hot in acc or on
Hot in on or start
Hrly
I2 (in dash harness, near accelerator position sensor)
Ia (at dash reinforcement, left side)
Ib (at dash brace, junction connector 4
Id (at dash brace, right side)
Junction connector 8 & 9 (behind upper right side of dash)
Left front door courtesy switch
Left front fog light
Left side)
Light control switch
Low
Main fuse 40a
Off
Parking brake switch (behind left side of dash)
Passenger side j/b (behind right side of dash)
Pkb
Pnk
Red
Right front fog light
Sdrl
Sgnd
Sig
Starting/ charging system
Tail
Tail relay
Trly
Usa

Headlamps Wiring Diagram, with DRL (2 of 2) for Lexus ES 300 2003

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List of elements for Headlamps Wiring Diagram, with DRL (2 of 2) for Lexus ES 300 2003:

(on left side of engine compartment) engine room j/b
(on left side of engine compartment) engine room r/b
Daytime running light resistor (at left front of engine compt, near engine room r/b)
Drl 2 relay
Drl 3 relay
Drl 4 relay
Drl fuse 5a
E4 (in engine harness, near left front turn signal light)
Eb (at right fender)
Ec (at left fender)
Except hid type
Head left lwr fuse 15a
Head left upr fuse 10a
Head right lwr fuse 15a
Head right upr fuse 10a
Hid type
Left headlight (high)
Left headlight (low)
Left headlight control ecu (behind left headlight)
Red
Right headlight (high)
Right headlight (low)
Right headlight control ecu (behind right headlight)
Usa

Headlamps Wiring Diagram, without DRL (1 of 2) for Lexus ES 300 2003

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List of elements for Headlamps Wiring Diagram, without DRL (1 of 2) for Lexus ES 300 2003:

A55
A85
Acc
Auto
Automatic light control sensor (on top left side of dash)
B11
Body ecu
Cltb
Clte
Clts
Combination meter
Combination switch
Dcty
Dimmer switch
Driver side j/b (behind left side of dash)
Ecu-acc fuse 5a
Ecu-b fuse 10a
Ecu-ig fuse 10a
Flash
Foglight switch
Front fog indicator
G10
Gnd
Head
High
High beam indicator
Hot at all times
Hot in acc or on
Hot in on or start
Hrly
Ia (at dash reinforcement, left side)
Ib (at dash brace, junction connector 4
Id (at dash brace, right side)
Left front door courtesy switch
Left side)
Light control switch
Low
Off
Passenger side j/b (behind right side of dash)
Red
Sgnd
Sig
Tail
Tail relay
Trly

Headlamps Wiring Diagram, without DRL (2 of 2) for Lexus ES 300 2003

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List of elements for Headlamps Wiring Diagram, without DRL (2 of 2) for Lexus ES 300 2003:

(on left side of engine compartment) engine room j/b
(on left side of engine compartment) engine room r/b
B11
C10
Driver side j/b (behind left side of dash)
Eb (at right fender)
Ec (at left fender)
Engine room j/b (on left side of engine compartment)
Fog fuse 15a
Fog relay
G12
H11
Head left lwr fuse 15a
Head left upr fuse 10a
Head relay
Head right lwr fuse 15a
Head right upr fuse 10a
Hot at all times
I2 (in dash harness, near accelerator position sensor)
Junction connector 8 & 9 (behind upper right side of dash)
Left front fog light
Left headlight (high)
Left headlight control ecu (behind left headlight)
Main fuse 40a
Red
Right front fog light
Right headlight (high)
Right headlight control ecu (behind right headlight)

Headlamps Leveling Wiring Diagram for Lexus ES 300 2003

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List of elements for Headlamps Leveling Wiring Diagram for Lexus ES 300 2003:

(in dash harness, near accelerator position sensor)
A32
Absorber control ecu (behind left end of dash) (w/ electric modulated suspension system)
Air bag sensor assembly (under front of center floor console)
Bb (under front passenger's seat)
Combination meter
Computer data lines system
Driver side j/b (behind left side of dash)
Engine room j/b (on left side of engine compartment)
Fro
Gauge 2 fuse 10a
Gnd
H11
Hdlp
Head relay
Headlight beam level control ecu (behind lower center of dash)
Headlight beam level indicator
Height control sensor (beneath center rear of vehicle)
Hot at all times
Hot in on or start
Ib (at dash brace, left side)
Ig2 fuse 10a
Junction connector 1 (behind upper left side of dash)
Junction connector 10 (behind lower right side of dash)
Junction connector 14 (near right front kick panel)
Junction connector 2 (behind upper center of dash)
Junction connector 4
Junction connector 5 (behind upper left side of dash)
Left headlight beam level control actuator (behind left headlight)
Lh1
Lh2
Lh3
Lh4
Main fuse 40a
Occupant detection sensor
Prst
Rbe+
Rh1
Rh2
Rh3
Rh4
Right buckle switch (on right front seat belt buckle)
Right headlight beam level control actuator (behind right headlight)
S7 fro
Sbr
Sgr
Shb
Shg
Shr
Shrr
Skid control ecu (behind right side of dash)
Skid control ecu w/ actuator
Spdr
Ss1
Ss2
W/ vsc
W/o vsc
Wng

HORN

Horn Wiring Diagram for Lexus ES 300 2003

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List of elements for Horn Wiring Diagram for Lexus ES 300 2003:

Combination switch
Driver side j/b (behind left side of dash)
Engine room j/b (on left side of engine compartment)
G22
High horn
Horn fuse 10a
Horn relay
Horn switch
Hot at all times
Low horn

INSTRUMENT CLUSTER

Instrument Cluster Wiring Diagram (1 of 2) for Lexus ES 300 2003

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List of elements for Instrument Cluster Wiring Diagram (1 of 2) for Lexus ES 300 2003:

(behind right side of dash)
(canada)
(usa)
(w/ vsc)
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
A33
A34
A35
A36
A37
A38
A39
A40
A55
A56
A57
A58
A68
A83
A85
A86
A87
A88
A93
Abs ind
Anti-lock brakes system
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B40 b20
B70 b50
Brake ind
Buzzer
Charge ind
Combination meter
Combination switch
Compt)
Cruise control system
Cruise ind
Door ind
Driver side j/b (behind
Driver side j/b (behind left side of dash)
Ecu-b fuse 10a
Eeprom
Ef (intake side of cylinder block)
Engine controls system
Engine oil level sensor (on front of engine)
Engine room j/b (on left side of engine compt)
Engine room r/b (on left side of engine
Exterior lights system
Front fog ind
Fuel
Fuel ind
Fuel pump & fuel sender (in fuel tank)
Gauge 1 fuse 10a
Head ind
Head lh lwr fuse 15a
Headlight beam level ind
Headlights system
High beam ind
Hot at all times
Hot in on or start
Hot in start
Hot w/ head relay energized
Hot w/ tail relay energized
Ia (at dash reinforcement, left side)
Ig2 fuse 10a
Illumination
Interior lights system
J/c 8 & 9 (behind upper right side of dash) j9
Left side of dash)
Left turn ind
Malfunction ind lamp
Mode
Multi- information display
Odometer/ trip
Oil level ind
Oil pressure ind
Panel fuse 10a
Passenger side j/b
Passenger side j/b (behind
Pnk
Power
Rear lights ind
Red
Reset
Right side of dash)
Right turn ind
Seat belt ind
Slip ind
Speed- ometer
Srs ind
St fuse 5a
Starting/charging system
Tachometer
Tail ind
Temperature
Trac off ind
Transmissions system
Usa
Vsc ind
W/ drl
W/ vsc w/o vsc
W/o drl
W/o vsc
Washer level ind
Wiper/washer system

Instrument Cluster Wiring Diagram (2 of 2) for Lexus ES 300 2003

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List of elements for Instrument Cluster Wiring Diagram (2 of 2) for Lexus ES 300 2003:

(behind left side of dash) driver side j/b
A/c control assembly (behind center of dash)
A14
A15
A22
A32
A41
A42
A55
A60
A65
A69
A72
A74
A82
A84
A92
B105
B106
B125
B126
B37 (w/o vsc)
B47 (w/o vsc)
B54
B57 (w/ vsc)
B64
B67 (w/ vsc)
B74
B84
B86
Body ecu (attached to driver side j/b)
Brake fluid level warning switch (on brake fluid reservoir)
Clock
Dome fuse 7.5a
Driver side j/b (behind left side of dash)
Drlp
Ecu-acc fuse 5a
Ed (at left fender)
Engine control module (behind right side of dash)
Engine room j/b (on left side of engine compt)
Hot at all times
Hot in acc or on
Hot in on or start
Ia (at dash reinforcement, left side)
Id (at dash brace, right side)
Ign fuse 15a
L10
Navigation ecu (at left side of luggage compt)
Oil pressure switch (on lower left front of engine block)
Passenger side j/b (behind right side of dash)
Radio & player w/ display
Red
Rheostat
Spd
Stereo component amplifier (mark levinson) (on right side of luggage compt)
Thwo
W/ navigation system
W/ vsc
W/o vsc

INTERIOR LIGHTS

Courtesy Lamps Wiring Diagram for Lexus ES 300 2003

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List of elements for Courtesy Lamps Wiring Diagram for Lexus ES 300 2003:

(at dash reinforcement, left side) ia
(in body harness, behind left rear combination light) b17
(in body harness, at right rear door sill)
+b rda prg e
A b6
A119
A120
A40
A56
A57
A60
A70
A74
A79
A84
A86
A87
Acc
B10
B14 (in body harness, behind left rear combination light)
B3 (in center of roof)
B3 red (in center of roof)
B54 b74
B64 b84
B8 (in body harness, at left rear door sill)
Body ecu
Combination meter
Cyl b4
Cyl b6
Cyl rrcy rlcy pcty b4
Dcty b6
Diode (at left "c" pillar)
Dome fuse 7.5a
Door
Door lock control receiver (at right "c" pillar)
Driver side j/b (behind left side of dash)
Ecu-acc fuse 5a
Ecu-b fuse 10a
Ecu-ig fuse 10a
Fspt b5
Gauge 1 fuse 10a
Gnd
Hot at all times
Hot in acc or on
Hot in on or start
Ia (at dash reinforcement left side)
Id (at dash brace, right side)
Ignition key cylinder light
Interior light
Junction connector 13 (near right front front of luggage compartment)
Junction connector 5 (behind upper center of dash)
K13
Left foot light
Left front door courtesy light
Left front door courtesy switch
Left rear door courtesy light
Left rear door courtesy switch
Left vanity light
Left visor switch
Lgcy b6
Luggage compartment light
Luggage compartment light switch
Micro computer
Noise filter (near left rear wheelwell)
Off
Opener garage door
Overhead j/b (on front center of roof)
Passenger side j/b (behind right side of dash)
Passsenger side j/b (behind right (side of dash)
Personel light
Power
Prg b5
Rda
Red
Rheostat
Right foot light
Right front door courtesy light
Right front door courtesy switch
Right rear door courtesy light
Right rear door courtesy switch
Right vanity light
Right visor switch
Sig
W/ moon roof
W/ vsc
W/o moon roof
W/o vsc

Instrument Illumination Wiring Diagram for Lexus ES 300 2003

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List of elements for Instrument Illumination Wiring Diagram for Lexus ES 300 2003:

A/c control assembly (behind center of dash)
A/t shift lever illumination
A115
A118
A13
A14
A17
A18
A19
A23
A28
A33
A38
A43
A48
A55
A56
A57
A58
A63
A64
A65
A68
A85
A86
A87
A88
A98
Absorber control switch
B54
B64
B74
B84
Body ecu
Cigarette lighter illumination
Clock
Combination meter
Console box illumination
Driver side j/b (behind left side of dash)
Ecu-b fuse 10a
Gauge 1 fuse 10a
Glove box light switch
Hazard switch
Hot at all times
Hot in on or start
Hot w/ tail relay energized
Ia (at dash reinforcement) left side)
Id (at dash brace, right side)
Junction connector 3 (behind left side of dash)
Micro computer
Panel fuse 10a
Passenger side j/b (behind right side of dash)
Power
Radio & player radio & player with display
Rear sunshade control switch
Remote control mirror switch
Rheostat
W/ navigation
W/ vsc
W/o navigation
W/o vsc

MEMORY SYSTEMS

Memory Mirrors Wiring Diagram for Lexus ES 300 2003

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List of elements for Memory Mirrors Wiring Diagram for Lexus ES 300 2003:

(w/ vsc) (w/o vsc)
A j9
A/t indicator light switch (on transaxle)
A100
A110
Acc
B23
B67 b47
B77 b57
Ba (under driver's seat)
Defogger system
Down
Driver side j/b (behind left side of dash)
Driving position memory switch
Ecu-acc fuse 5a
Ecu-b fuse 10a
Ecu-ig fuse 10a
Gauge 2 fuse 10a
Gnd
Hot at all times
Hot in acc or on
Hot in on or start
Hsrl
Hssr
Interior lights system
J/c 1 (behind upper left side of dash)
J/c 10 (behind lower right side of dash)
J/c 3 (behind left side of dash)
J/c 4 (behind left center of dash)
J/c 6 & 7 (behind upper right side of dash)
J/c 8 & 9 (behind upper right side of dash)
K12
Left
Left remote control mirror
M+l
M+r
Memory mirror ecu (behind lower center of dash)
Memory seat ecu (below left front seat)
Mhl
Mhr
Mmry
Mvl
Mvr
Operation switch
Passenger side j/b (behind right side of dash)
Pnk
Pwr seat fuse 30a
Remote control mirror switch
Right
Right remote control mirror
Select switch
Set
Sw1
Sw2
Swb
Swe
Swlh
Swlv
Swrh
Swrv
Sysb
Vsr
Vsrl
Vssr

Memory Seat Wiring Diagram for Lexus ES 300 2003

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List of elements for Memory Seat Wiring Diagram for Lexus ES 300 2003:

A/t indicator light switch (on transaxle)
A100
A110
B22
B23
Ba (under driver's seat)
Ba (under driver;s seat)
Dcty
Down
Driver side j/b (behind left side of dash)
Driver's power seat control switch
Driving position memory switch
Ecu-b fuse 10a
Ecu-ig fuse 10a
Fdwn
Front
Front vertical
Frv+
Frv-
Fup
Gauge 2 fuse 10a
Gnd
Hot at all times
Hot in on or start
J/c 3 (bewhind left side of dash)
J/c 6 & 7 (behind upper right side of dash)
K12
Left front door courtesy switch
Lifter
Memory mirror ecu (behind lower center of dash)
Memory seat ecu (below left front seat)
Mmry
Passenger side j/b (behind right side of dash)
Pnk
Power seat control switch (driver's seat lumbar support control)
Power seat motor (driver's seat front vertical control)
Power seat motor (driver's seat lifter control)
Power seat motor (driver's seat lumbar support control)
Power seat motor (driver's seat reclining control)
Power seat motor (driver's seat slide control)
Pwr seat fuse 30a
Rcl+
Rcl-
Rclf
Rclr
Rdwn
Rear
Reclining
Red
Rrv+
Rrv-
Rup
Set
Sld+
Sld-
Sldf
Sldr
Slide
Sw1
Sw2
Swe
Sysb

NAVIGATION

Navigation Wiring Diagram for Lexus ES 300 2003

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List of elements for Navigation Wiring Diagram for Lexus ES 300 2003:

A42
A82
Acc
Aui+
Aui-
Auo+
Auo-
B16
B16 (in body harness, near navigation ecu)
Combination meter
D j6
Door speaker
Driver side j/b (behind left side of dash)
Exterior lights system
Fl+
Fl-
Gnd
Hot at all times
Hot in acc or on
J/c 12 (forward of left rear fenderwell)
J/c 6 & 7 (behind upper right side of dash)
J6 d
J6 e
J7 d
Left front
Left tweeter
Mobile telephone
Navigation ecu (at left side of luggage compt)
Nca
Passenger side j/b (behind right side of dash)
Pnk
Rad 1 fuse 20a
Rad 2 fuse 10a
Radio & player with display
Red
Rev
S19
Spd
Stereo component amplifier (behind right side of dash)
Sync
Sync1
T15
Telephone computer (on left side of luggage compt)
Tx+
Tx-
Tx1+
Tx1-
Vg1
Vr1
W/ cellular
W/ mark levinson
W/o cellular
W/o mark levinson

PASSIVE RESTRAINTS

Passive Restraints Wiring Diagram for Lexus ES 300 2003

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List of elements for Passive Restraints Wiring Diagram for Lexus ES 300 2003:

B9 (on floor, behind right front seat)
Ba (under driver's seat)
Bb (under front passenger's seat)
Driver side j/b (behind left side of dash)
Gauge 2 fuse 10a
Headlight beam level control ecu (behind lower center of dash)
Hot in run or start
J/c 10 (behind lower right side of dash)
Left buckle switch (in buckle)
Left tension reducer solenoid (at base of left "b" pillar)
Right buckle switch (in buckle)
Right tension reducer solenoid (at base of right "b" pillar)
Ss2
W/ headlight beam level control system

POWER DISTRIBUTION

Power Distribution Wiring Diagram (1 of 3) for Lexus ES 300 2003

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List of elements for Power Distribution Wiring Diagram (1 of 3) for Lexus ES 300 2003:

(behind left side of dash) driver side j/b
(not used)
A10
A11
A12
Abs, air conditioning, charging, combination meter, cruise control, electronic modulated suspension, electronically controlled transmission & a/t indicator, engine control
Abs, automatic glare-resistant ec mirror & compass, back- up light, cruise control, electro- nically controlled transmission & a/t indicator, headlight beam level control, moon roof, multiplex communication system, power seat, rear sunshade, rear window defogger & mirror heater, remote control mirror, tension reducer, vsc, power adjustable pedals
Abs, automatic light control, cellular mobile telephone, headlight (w/drl), headlight (w/o drl), interior light, key reminder, light auto turn off, moon roof, multiplex communication system, power seat, power window, remote control mirror, seat belt warning, srs, theft deterrent & door lock control, vsc, wireless door lock.
Acc
Acc relay
Air conditioning system, seat belt warning, srs
Alt fuse 120a
Am1 fuse 5a
Automatic light control, cellular mobile telephone, clock, interior light, key reminder, light auto turn off, multiplex communication system, remote control mirror, theft deterrent & door lock control
Battery
Body ecu
Cig fuse 15a
Cigarette lighter
Clock, combination meter, taillight & stop light, illumination
D10
Def fuse 40a
Def relay
Ecu- acc fuse 5a
Ecu-ig fuse 10a
Electronic modulated suspension, radiator fan & condenser fan
Engine control, rear window defogger & mirror heater
Engine control, taillight & stop light
Engine room relay block (on left side of eng compt)
Fan rly fuse 10a
From alt fuse (diagram 1 of 3)
From ig1 relay (diagram 1 of 3)
From ignition switch (diagram 2 of 3)
G15
G16
G21
G24
Gauge1 fuse 10a
Gauge2 fuse 10a
Generator
H13
Htr fuse 10a
Ia (left dash reinforce- ment)
Ib (left dash brace)
Ig1 relay
Illumination, interior light, key reminder, lexus navigation system, radio & player, multiplex communication system, seat belt warning, shift lock, srs, taillight & stop light, turn signal & hazard warning light, vsc
J/c j4
K12
K18
K19
Lexus navigation system, radio & player
Mir htr fuse 10a
Noise filter
Panel fuse 5a
Pnk
Power outlet
Power point fuse 15a
Rad fuse 10a
Rear sunshade
Seat heater
Seat htr fuse 20a
Sig
Sun- shade fuse 15a
Tail fuse 10a
Tail relay
To acc relay (diagram 1 of 3)
To driver side j/b (diagram 1 of 3)
To driver side j/b (diagram 2 of 3)
To engine room j/b (diagram 2 of 3)
To engine room j/b (diagram 3 of 3)
To ignition switch (diagram 2 of 3)
Washer fuse 15a
Window defogger
Wiper & washer
Wiper fuse 25a
Wiper washer

Power Distribution Wiring Diagram (2 of 3) for Lexus ES 300 2003

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List of elements for Power Distribution Wiring Diagram (2 of 3) for Lexus ES 300 2003:

+bm
Abs & ba & trac & vsc actuator
Abs 2 fuse 40a
Abs 3 fuse 30a
Abs 4 fuse 7.5a
Abs mtr relay
Abs sol relay
Abs, cruise control, electronic modulated suspension, taillight & stop light vsc
Acc
Adj pdl fuse 30a
Am1
Am2
Amp fuse 25a
Ast
B10
B12
Bdr2
Body ecu
C/opn relay
Cds fuse 30a
Charging, combination meter, cruise control, electronically controlled transmission & a/t indicator, engine control, engine immobilizer system, headlight beam level control, seat belt warning, srs, vsc
Combination meter
Door 2 fuse 25a
Driver side j/b (behind left side of dash)
Electronically controlled transmission & a/t indicator, engine control, shift lock
Engine control
Engine control module, park neutral position switch
Engine control, starting & ignition
Engine room j/b (on left side of eng compt)
Engine room r/b (on left side of eng compt)
Fan 1 relay
Fog fuse 15a
Fog light
Fog relay
From driver j
From driver side j/b (diagram 1 of 3)
From engine room j/b (diagram 3 of 3)
From engine room relay block (diagram 1 of 3)
Fuel lid opener
Fuel open fuse 5a
G12
G13
Htr fuse 50a
Htr relay
Ig1
Ig2
Ig2 fuse 10a
Ign fuse 15a
Ignition switch
L10
Lexus navigation system, radio & player
Lock
Moon roof, multiplex communication system, power window, theft deterrent & door lock control, wireless door lock
Multiplex communication system, power window
Multiplex communication system, power window, theft deterrent & door lock control, wireless door lock
Obd fuse 7.5a
Power adjustable pedals
Power seat, remote control mirror
Pwr 1 fuse 30a
Pwr 2 fuse 20a
Pwr 3 fuse 20a
Pwr 4 fuse 20a
Pwr seat fuse 30a
Radiator fan & condenser fan
Rdi fuse 30a
Red
Side j/b (diagram 1 of 3)
Skid control ecu
St fuse 5a
St relay
St1
St2
Start
Starter
Stop fuse 15a
To driver side j/b (diagram 1 of 3)
W/ vsc

Power Distribution Wiring Diagram (3 of 3) for Lexus ES 300 2003

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List of elements for Power Distribution Wiring Diagram (3 of 3) for Lexus ES 300 2003:

(not used)
A/f fuse 25a
Air conditioning, automatic light control, combination meter, headlight, illumination, interior light, key reminder, lexus navigation system, radio & player, light auto turn off, luggage compartment door opener, moon roof, multiplex communication system, power seat, power window, remote control mirror, theft deterrent & door lock control, vsc, wireless door lock
Alt-s fuse 5a
Am2 fuse 30a
B11
Bdr2
Body ecu
Cellular mobile telephone
Charging
Clock, garage door opener, interior light, luggage compartment door opener, moon roof, multiplex communication system, power window, theft deterrent & door lock control, wireless door lock
Combi- nation meter, fog light headlight, multiplex commu- nication system
Cruise control, electro- nically controlled transmission & a/t indicator engine control engine immo- biliser system
Cruise control, engine control
D.c.c. fuse 30a
Dome fuse 7.5a
Door1 fuse 25a
Driver side j/b (behind left side of dash)
Drl fuse 5a
Drl relay
Ecu-b fuse 10a
Efi fuse 20a
Efi relay
Engine control
Engine room j/b (on left side of eng compt)
Engine room r/b (on left side of egn compt)
Etcs fuse 10a
From engine room relay block (diagram 1 of 3)
Haz fuse 15a
Head lh lwr fuse 15a
Head lh upr fuse 10a
Head relay
Head rh lwr fuse 15a
Head rh upr fuse 10a
Headlight, multiplex commu- nication system
Headlight, multiplex communication system
Horn fuse 10a
Horn relay
K11
K13
Lexus navigation system, radio & player
Luggage compartment door opener, multiplex communication system, power window, theft deterrent & door lock control, wireless door lock
Main fuse 40a
Rad 1 fuse 20a
Red
Tel fuse 5a
To ignition switch (diagram 2 of 3)
Turn signal & hazard warning light
W/ drl
W/o drl

POWER MIRRORS

Electrochromic Mirror Wiring Diagram for Lexus ES 300 2003

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List of elements for Electrochromic Mirror Wiring Diagram for Lexus ES 300 2003:

Driver side j/b (behind left side of dash)
Ec+
Ec-
Gauge 2 fuse 10a
Gnd
Gnd5
Hot in on or start
Ia (at dash reinforcement, left side)
Ig1
Inner mirror & compass
J/c 10 (behind lower right side of dash)
J/c 5 (behind upper left side of dash)
Left remote control mirror
Overhead j/b (moon roof) (on front center of roof)
Right remote control mirror
W/ moon roof
W/o moon roof

Power Mirrors Wiring Diagram for Lexus ES 300 2003

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List of elements for Power Mirrors Wiring Diagram for Lexus ES 300 2003:

B47
B57
B67
B77
Defogger system
Down
Driver side j/b (behind left side of dash)
Ecu-acc fuse 5a
Hot in on or acc
Interior lights system
J/c 1 (behind upper left side of dash)
J/c 3 (behind left side of dash)
J/c 4 (behind left center of dash)
J/c 8 & 9 (behind upper right side of dash)
Left
Left remote control mirror
Mlh
Mlv
Mrh
Mrv
Operation switches
Passenger side j/b (behind right side of dash)
Remote control mirror switch
Right
Right remote control mirror
Select switches
W/ vsc
W/o vsc

POWER SEATS

Adjustable Pedal Wiring Diagram for Lexus ES 300 2003

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List of elements for Adjustable Pedal Wiring Diagram for Lexus ES 300 2003:

A/t indicator light switch (on transaxle)
A110
Adj pdl fuse 30a
Adj pdl relay
Adjustable pedal motor (behind left side of dash)
Adjustable pedal switch
Back
Driver side j/b (behind left side of dash)
Ec (at left fender)
Engine room j/b (on left side of engine compt)
Engine room r/b (on left side of engine compt)
Front
Gauge 2 fuse 10a
Hot at all times
Hot in on or start
J/c 4 (behind left center of dash)
J/c 6 & 7 (behind upper right side of dash) b
Passenger side j/b (behind right side of dash)
Red

Heated Seats Wiring Diagram for Lexus ES 300 2003

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List of elements for Heated Seats Wiring Diagram for Lexus ES 300 2003:

A/c control assembly (behind center of dash)
B22
B24
Ba (under driver's seat)
Bb (under front passenger's seat)
Driver side j/b (behind left side of dash)
Hot in on or start
Left seat heater
Right seat heater
Seat htr fuse 20a
Sgnd
Shd+
Shd-
Shde
Shdt
Shp+
Shp-
Shpe
Shpt

Power Seats Wiring Diagram for Lexus ES 300 2003

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List of elements for Power Seats Wiring Diagram for Lexus ES 300 2003:

(driver's seat lumbar support control)
B23
B24
Ba (under driver's seat)
Bb (under front passenger's seat)
Down
Driver side j/b (behind left side of dash)
Driver's power seat control switch
Front
Front passenger's power seat control switch
Hot at all times
Lifter
Power seat control switch
Power seat motor (driver's seat front vertical control)
Power seat motor (driver's seat lifter control)
Power seat motor (driver's seat lumbar support control)
Power seat motor (driver's seat reclining control)
Power seat motor (driver's seat slide control)
Power seat motor (front passenger's seat front vertical control)
Power seat motor (front passenger's seat lifter control)
Power seat motor (front passenger's seat reclining control)
Power seat motor (front passenger's seat slide control)
Pwr seat fuse 30a
Rear
Reclining
Red
Slide
Vertical

POWER TOP/SUNROOF

Power Top/Sunroof Wiring Diagram for Lexus ES 300 2003

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List of elements for Power Top/Sunroof Wiring Diagram for Lexus ES 300 2003:

(under driver's seat) ba
A40
A60
B10
Body ecu (attached to driver side j/b)
Buzzer
Bzr
Close/up
D12
Dcty
Dome fuse 7.5a
Door lock control receiver (at right "c" pillar)
Down/ open
Driver door ecu (in middle of left front door)
Driver side j/b (behind left side of dash)
Eb (at right fender)
Ecu-b fuse 10a
Ecu-ig fuse 10a
Gauge 2 fuse 10a
Gnd
Hot at all times
Hot in on or start
Ia (at dash reinforcement, left side)
Id (at dash brace, right side)
J/c 10 (behind lower right side of dash)
J/c 13 (near right front of luggage compt)
Keye
Keyless buzzer
Keyless buzzer on/off switch
Kul
Left front door courtesy switch
Left front door key lock & unlock switch
Left rear door courtesy switch
Moon roof control ecu & motor (at center front of roof)
Moon roof ecu
Mpx1
Open/down
Overhead j/b (on front center of roof)
Passenger side j/b (behind right side of dash)
Pcty
Prg
Pwr 1 fuse 30a
Pws
Rda
Red
Right front door courtesy switch
Right rear door courtesy switch
Rlcy
Rrcy
Sgnd
Sig
Up/ close
Wopn

POWER WINDOWS

Power Windows Wiring Diagram for Lexus ES 300 2003

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List of elements for Power Windows Wiring Diagram for Lexus ES 300 2003:

(at dash reinforcement, ia
(at dash reinforcement, right side) if
(at front side of left rear wheelwell)
(forward of left rear fenderwell) j/c 12
A40
A56
A60
A66
A70
B11
Ba (under driver's seat)
Bd (at front side of right rear wheelwell)
Bdr
Bdr1
Bdr2
Body ecu (attached to driver side j/b)
Buzzer
Bzr
Cpub
Dcty
Dome fuse 7.5a
Door
Door 1 fuse 25a
Door 2 fuse 25a
Door lock control receiver (at right "c" pillar)
Driver door ecu (in middle of left front door)
Driver side j/b (behind left side of dash)
Eb (at right fender)
Ecu-b fuse 10a
Ecu-ig fuse 10a
Engine room j/b (on left side of engine compartment)
Front passenger door ecu (in middle of right front door)
G14
Gnd
Hot at all times
Hot in on or start
Id (at dash brace, right side)
Ignition key cylinder light
Interior light
J8 b
Junction connector 13 (near right front of luggage compartment)
Junction connector 8 & 9 (behind upper right side of dash)
K11
K12
Keye
Keyless buzzer (at right front corner of engine compartment)
Keyless buzzer on/off switch
Kul
Left front door courtesy switch
Left front door key lock/ unlock switch
Left front power window motor
Left rear door courtesy switch
Left rear door ecu (in middle of left rear door)
Left rear power window motor
Left side)
Lmt
Mdn
Mpx1
Mpx2
Mpx4
Mpx5
Mup
Passenger side j/b (behind right side of dash)
Pct
Pcty
Pls
Prg
Pwr 1 fuse 30a
Pwr 2 fuse 20a
Pwr 3 fuse 20a
Pwr 4 fuse 20a
Rda
Red
Right front door courtesy switch
Right front power window motor
Right rear door courtesy switch
Right rear door ecu (in middle of right rear door)
Right rear power window motor
Rlcy
Rrcy
Sgnd
Sig
Wlsw

Rear Window Sun Shade Wiring Diagram for Lexus ES 300 2003

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List of elements for Rear Window Sun Shade Wiring Diagram for Lexus ES 300 2003:

Back-up light switch (on transaxle)
Bc (at front side of left rear wheelwell)
Driver side j/b (behind left side of dash)
Gauge 2 fuse 10a
H13
Hot in on or start
Ib (at dash brace, left side)
Junction connector 1 (behind upper left side of dash)
Junction connector 12 (forward of left rear fenderwell)
Junction connector 4 (behind left center of of dash)
Rear sunshade control relay (near front center of luggage compartment)
Rear sunshade control switch
Rev
Sunshade fuse 15a

RADIO

Radio Wiring Diagram, 1 CD without Mark Levinson without Navigation for Lexus ES 300 2003

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List of elements for Radio Wiring Diagram, 1 CD without Mark Levinson without Navigation for Lexus ES 300 2003:

Acc
Amp
Amp+
Beep
Driver side j/b (behind left side of dash)
Fl+
Fl-
Fr+
Fr-
Gnd
Hot at all times
Hot in acc or on
Ic (at dash brace, right side)
J/c 6 & 7 (behind upper right side of dash)
Left front door speaker
Left tweeter
Mute
Nca
Pnk
Rad 1 fuse 20a
Rad 2 fuse 10a
Radio & player
Red
Right front door speaker
Right rear door speaker
Right tweeter
Rl+
Rl-
Rr+
Rr-
S10
S11
S12
S14
S15
Sgd3
Sgnd
Short connector (near left side of luggage compt)
Spin+
Spin-
Spout+
Spout-
Stereo component amplifier (behind right side of dash)
T11
T12
T13
Telephone computer (on left side of luggage compartment)
W/ telephone
W/o telephone
Wf+
Wf-
Woofer

Radio Wiring Diagram, 6 CD without Mark Levinson without Navigation for Lexus ES 300 2003

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List of elements for Radio Wiring Diagram, 6 CD without Mark Levinson without Navigation for Lexus ES 300 2003:

Acc
Driver side j/b (behind left side of dash)
Fl+
Fl-
Fr+
Fr-
Gnd
Hot at all times
Hot in acc or on
I4 (in dash harness, near stereo component amplifier)
Ic (at dash brace, right side)
J/c 6 & 7 (behind upper right side of dash)
Left front door speaker
Left tweeter
Mute
Nca
Pnk
Rad 1 fuse 20a
Rad 2 fuse 10a
Radio & player
Red
Right front door speaker
Right rear door speaker
Right tweeter
Rl+
Rl-
Rr+
Rr-
S10
S11
S14
S15
Sgnd
Short connector (near left side of luggage compartment)
Spin+
Spin-
Spout+
Spout-
Stereo component amplifier (behind right side of dash)
T11
T12
T13
Telephone computer (on left side of luggage compartment)
Tx+
Tx-
W/ telephone
W/o telephone
Wf+
Wf-
Woofer

Radio Wiring Diagram, with Mark Levinson with Navigation with Telephone (1 of 2) for Lexus ES 300 2003

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List of elements for Radio Wiring Diagram, with Mark Levinson with Navigation with Telephone (1 of 2) for Lexus ES 300 2003:

(in dash harness, near ih1)
(near stereo component amplifier)
A32
A41
A42
A82
Acc
Acc+b
Amp fuse 25a
Aui+
Aui-
Auo+
Auo-
Bu+b
Cd automatic changer
Combination meter
Driver side j/b (behind left side of dash)
Exterior lights system
Gnd
Hot at all times
Hot in acc or on
Ic (at dash brace, right side)
J/c 12 (forward of left rear fenderwell)
J/c 6 & 7 (behind upper right side of dash)
Left front door speaker
Mute
Navigation ecu (at left side of luggage compt)
Nca
Passenger side j/b (behind right side of dash)
Pnk
Rad 1 fuse 20a
Rad 2 fuse 10a
Radio & player w/ display
Red
Rev
Sld
Sld2
Spd
Sync
Tlmt
Tx+
Tx-

Radio Wiring Diagram, with Mark Levinson with Navigation with Telephone (2 of 2) for Lexus ES 300 2003

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List of elements for Radio Wiring Diagram, with Mark Levinson with Navigation with Telephone (2 of 2) for Lexus ES 300 2003:

(in body harness, near navigation ecu)
Acc
B16
B16 (in body harness, near navigation ecu)
B21
Fl+
Fl-
Fr+
Fr-
Gnd
Ic (at dash brace, right side)
J/c 13 (near right front of luggage compartment)
Left rear door speaker
Left tweeter
Mute
Mute t11
Pnk
Red
Right front door speaker
Right rear door speaker
Right tweeter
Rl+
Rl-
Rr+
Rr-
S18
S19
Spd
Spin+
Spin-
Spout+
Spout-
Stereo component amplifier (on right side of luggage compartment)
Sync
Sync1
T12
T13
T14
T15
Telephone computer (on left side of luggage compartment)
Tfl+
Tfl-
Tfr+
Tfr-
Tx+
Tx-
Tx1
Tx1+
Vg1
Vr1
Wf+
Wf-
Woofer speaker

Radio Wiring Diagram, with Mark Levinson with Navigation without Telephone (1 of 2) for Lexus ES 300 2003

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List of elements for Radio Wiring Diagram, with Mark Levinson with Navigation without Telephone (1 of 2) for Lexus ES 300 2003:

(forward of left rear fenderwell)
(in dash harness, near ih1)
(near stereo component amplifier)
A32
A41
A42
A82
Acc
Acc+b
Aui+
Aui-
Auo+
Auo-
B16 (in body harness, near navigation ecu)
Bu+b
Cd automatic changer
Combination meter
Driver side j/b (behind left side of dash)
Exterior lights system
Gnd
Hot at all times
Hot in acc or on
J/c 12
J/c 6 & 7 (behind upper right side of dash)
Left front door speaker
Mute
Navigation ecu (at left side of luggage compartment)
Nca
Passenger side j/b (behind right side of dash)
Pnk
Rad 1 fuse 20a
Rad 2 fuse 10a
Radio & player w/ display
Red
Rev
Sld
Sld2
Spd
Sync
Tx+
Tx-

Radio Wiring Diagram, with Mark Levinson with Navigation without Telephone (2 of 2) for Lexus ES 300 2003

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List of elements for Radio Wiring Diagram, with Mark Levinson with Navigation without Telephone (2 of 2) for Lexus ES 300 2003:

Acc
Amp fuse 25a
B21
Driver side j/b (behind left side of dash)
Fl+
Fl-
Fr+
Fr-
Gnd
Hot at all times
Ic (at dash brace, right side)
J/c 13 (near right front of luggage compartment)
Left rear door speaker
Left tweeter
Mute
Pnk
Red
Right front door speaker
Right rear door speaker
Right tweeter
Rl+
Rl-
Rr+
Rr-
S14
S15
S18
S19
Short connector (near left side of luggage compartment)
Spd
Stereo component amplifier (on right side of luggage compt)
Tfl+
Tfl-
Tfr+
Tfr-
Tx+
Tx-
Wf+
Wf-
Woofer speaker

Radio Wiring Diagram, with Mark Levinson without Navigation for Lexus ES 300 2003

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List of elements for Radio Wiring Diagram, with Mark Levinson without Navigation for Lexus ES 300 2003:

(behind upper right side of dash)
Acc
Amp fuse 25a
B21
Bb (under front passenger's seat)
Driver side j/b (behind left side of dash)
Fl+
Fl-
Fr+
Fr-
Gnd
Hot at all times
Hot in acc or on
I4 (in dash harness, near stereo component amplifier)
Ic (at dash brace, right side)
Instrument cluster system
J/c 13 (near right front of luggage compartment)
J/c 6
Left front door speaker
Left tweeter
Mute
Nca
Pnk
Rad 1 fuse 20a
Rad 2 fuse 10a
Radio & player
Red
Right front door speaker
Right rear door speaker
Right tweeter
Rl+
Rl-
Rr+
Rr-
S14
S15
S18
S19
Sgnd
Short connector (near left side of luggage compartment)
Spd
Spin+
Spin-
Spout+
Spout-
Stereo component amplifier (on right side of luggage compt)
T11
T12
T13
Telephone computer (on left side of luggage compartment)
Tfl+
Tfl-
Tfr+
Tfr-
Tx+
Tx-
W/ telephone
W/o telephone
Wf+
Wf-
Woofer

Radio Wiring Diagram, without Mark Levinson with Navigation with Telephone (1 of 2) for Lexus ES 300 2003

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List of elements for Radio Wiring Diagram, without Mark Levinson with Navigation with Telephone (1 of 2) for Lexus ES 300 2003:

(in dash harness, near ih1)
A41
A42
A82
Acc
Acc+b
Aui+
Aui-
Auo+
Auo-
Bu+b
Cd automatic changer
Combination meter
Driver side j/b (behind left side of dash)
Exterior lights system
Gnd
Hot at all times
Hot in acc or on
I4 (in dash harness, near stereo component amplifier)
J/c 12 (forward of left rear fenderwell)
J/c 6 & 7 (behind upper right side of dash)
Left front door speaker
Left tweeter
Mute
Navigation ecu (at left side of luggage compt)
Nca
Passenger side j/b (behind right side of dash)
Pnk
Rad 1 fuse 20a
Rad 2 fuse 10a
Radio & player w/ display
Red
Rev
Sld
Sld2
Spd
Sync
Tlmt
Tx+
Tx-

Radio Wiring Diagram, without Mark Levinson with Navigation with Telephone (2 of 2) for Lexus ES 300 2003

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List of elements for Radio Wiring Diagram, without Mark Levinson with Navigation with Telephone (2 of 2) for Lexus ES 300 2003:

(in body harness, near navigation ecu)
Acc
B16
B16 (in body harness, near navigation ecu)
Fl+
Fl-
Fr+
Fr-
Ic (at dash brace, right side)
Left rear door speaker
Mute
Mute t11
Pnk
Red
Right front door speaker
Right rear door speaker
Right tweeter
Rl+
Rl-
Rr+
Rr-
S10
S11
Spin+
Spin-
Spout+
Spout-
Stereo component amplifier (behind right side of dash)
Sync
Sync1
T12
T13
Telephone computer (on left side of luggage compartment)
Tx+
Tx-
Tx- t14
Tx1
Tx1+
Vf1
Vg1 t15
Wf+
Woofer speaker
Wr-

Radio Wiring Diagram, without Mark Levinson with Navigation without Telephone (1 of 2) for Lexus ES 300 2003

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List of elements for Radio Wiring Diagram, without Mark Levinson with Navigation without Telephone (1 of 2) for Lexus ES 300 2003:

(in body harness, at left kick panel)
(in dash harness, near ih1)
A41
A42
A82
Acc
Acc+b
Aui+
Aui-
Auo+
Auo-
Bu+b
Cd automatic changer
Combination meter
Driver side j/b (behind left side of dash)
Exterior lights system
Gnd
Hot at all times
Hot in acc or on
I4 (in dash harness, near stereo component amplifier)
J/c 12 (forward of left rear fenderwell)
J/c 6 & 7 (behind upper right side of dash)
Left front door speaker
Left tweeter
Mute
Navigation ecu (at left side of luggage compt)
Nca
Passenger side j/b (behind right side of dash)
Pnk
Rad 1 fuse 20a
Rad 2 fuse 10a
Radio & player w/ display
Red
Rev
Sld
Sld2
Spd
Sync
Tx+
Tx-

Radio Wiring Diagram, without Mark Levinson with Navigation without Telephone (2 of 2) for Lexus ES 300 2003

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List of elements for Radio Wiring Diagram, without Mark Levinson with Navigation without Telephone (2 of 2) for Lexus ES 300 2003:

Acc
Fl+
Fl-
Fr+
Fr-
Ic (at dash brace, right side)
Left rear door speaker
Mute
Pnk
Red
Right front door speaker
Right rear door speaker
Right tweeter
Rl+
Rl-
Rr+
Rr-
S10
S11
S14
S15
Short connector (near left side of luggage compt)
Stereo component amplifier (behind right side of dash)
Tx+
Tx-
Wf+
Woofer speaker
Wr-

SHIFT INTERLOCK

Shift Interlock Wiring Diagram for Lexus ES 300 2003

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List of elements for Shift Interlock Wiring Diagram for Lexus ES 300 2003:

A111
A116
A117
A51
A55
A57
Driver side j/b (behind left side of dash)
G13
Gauge 1 fuse 10a
Hot at all times
Hot in on or start
Ia (at dash reinforcement, left side)
Passenger side j/b (behind right side of dash)
Shift lock control ecu (under center floor console)
Shift lock solenoid
Sls+
Sls-
Stop fuse 15a
Stoplight switch (behind left side of dash)
Stp

STARTING/CHARGING

Charging Wiring Diagram for Lexus ES 300 2003

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List of elements for Charging Wiring Diagram for Lexus ES 300 2003:

A107
A57
Acc
Alt fuse link 120a
Alt-s fuse 5a
Altl
Am2 fuse 30a
B105
B115
B75
B85
B95
Battery
Battery ground
Body ecu (attached to driver side j/b)
Charge indicator
Comb- ination meter
Driver side j/b (behind left side of dash)
Engine room j/b (on left side of engine compt)
Engine room r/b (on left side of engine compt)
Gauge 1 fuse 10a
Generator
Hot in on or start
Ig2 fuse 10a
Ignition switch
Lock
Nca
Passenger side j/b (behind right side of dash)
Start
W/ vsc
W/o vsc

Starting Wiring Diagram for Lexus ES 300 2003

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List of elements for Starting Wiring Diagram for Lexus ES 300 2003:

Acc
Alt fuse link 120a
Am1
Am1 fuse 5a
Am2
Am2 fuse 30a
Battery
Battery ground
Driver side j/b (behind left side of dash)
Ec (at left fender)
Engine control module (behind right side of dash)
Engine room j/b (on left side of engine compt)
Engine room r/b (on left side of engine compartment)
Engine room r/b (on left side of engine compt)
Ignition switch
Instrument cluster system
Lock
Nca
Nsw
Park/neutral position switch (on transaxle)
St fuse 5a
St1
St2
Sta
Start
Starter
Starter relay

SUPPLEMENTAL RESTRAINTS

Supplemental Restraints Wiring Diagram (1 of 2) for Lexus ES 300 2003

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List of elements for Supplemental Restraints Wiring Diagram (1 of 2) for Lexus ES 300 2003:

(above left rear fenderwell) left curtain shield air bag sensor
(under front passenger's seat) bb
+sl
+sr
-sl
-sr
A30
A31
A32
Air bag sensor assembly (under front of center floor console)
Air bag squib (steering wheel pad)
Body ecu
Csl+
Csl-
Csr+
Csr-
D10
D2+
D2-
Driver side j/b (behind left side of dash)
Ecu-ig fuse 10a
Engine room j/b (on left side of engine compartment)
Escl
Escr
Esl
Esr
Gsw
Hot in on or start
Icl+
Icl-
Icr+
Icr-
Id (at right side dash brace)
Ig1
Ig2
Ig2 fuse 10a
J/c 14 (near right front kick panel)
Lbe+
Left curtain shield air bag squib
Left pretensioner
Left side air bag squib
Lsp+
Lsp-
Occupant detection sensor
P2+
P2-
Pbew
Pl+
Pl-
Pnk
Pr+
Pr-
Rbe+
Right buckle switch (on right front seat belt buckle)
Right curtain shield air bag sensor (above right rear fenderwell)
Right curtain shield air bag squib
Right pretensioner
Right side air bag squib
Sfl+
Sfl-
Sfr+
Sfr-
Sil
Vucl
Vucr
Vupl
Vupr

Supplemental Restraints Wiring Diagram (2 of 2) for Lexus ES 300 2003

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List of elements for Supplemental Restraints Wiring Diagram (2 of 2) for Lexus ES 300 2003:

(at left side dash reinforcement) 1a
(at lower left "b" pillar) left side air bag sensor
(at right side dash brace) id
(front passenger air bag assembly no.1) air bag squib
(front passenger air bag assembly no.2) air bag squib
(on left front seat belt buckle) left buckle switch
(under driver's seat) ba
(w/o vsc) (w/vsc)
(w/vsc) (w/o vsc)
A/c control assembly (behind center of dash)
A14
A15
A29
A57
A59
A87
B41
B42
B51
B52
B54 b74
B61
B62
B71
B72
B84 b64
Combination meter
Connector 3 (partial) (at lower left side of dash)
Data link
Driver side j/b (behind left side of dash)
Esl
Gauge 1 fuse 10a
Hot in on or start
Htr fuse 10a
J/c 5 (behind upper left side of dash)
K14
Left front air bag sensor (on left front of engine compartment)
P2+
P2-
Passenger side j/b (behind right side of dash)
Passenger side j/b (right side of dash)
Pbew
Right front air bag sensor (on right front of engine compartment)
Seat position air bag sensor
Solid state
Srs
Vupl
W/ vsc
W/o vsc

TRANSMISSION

A/T Wiring Diagram (1 of 2) for Lexus ES 300 2003

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List of elements for A/T Wiring Diagram (1 of 2) for Lexus ES 300 2003:

(dash harn, near accel position sensor) i2
(on transaxle) (integral to park/neutral position switch) a/t indicator light switch
+b1
+bm
A104
A110
A114
A51
A55
A57
A82
A85
A87
A90
A91
A92
A94
Accelerator pedal position sensor (behind left center of dash)
B100
B101
B103
B104
B106
B107
B109
B110
B111
B119
B120
B121
B123
B124
B126
B127
B130
B32
B43
B51
B52
B63
B69
B71
B72
B74
B77
B79
B80
B81
B83
B84
B86
B87
B89
B91
B94
B97
B99
Batt
Combination meter
Computer micro
Data link connector 3 (lower left side of dash)
Driver side j/b (behind left side of dash)
Ed (left front fender)
Efi fuse 20a
Efi relay
Engine control module (ecm) (behind right side of dash)
Engine room j/b (on left side of engine compt)
Epa
Epa2
Etcs fuse 10a
G13
G17
G20
Gauge 1 fuse 10a
Gauge 2 fuse 10a
Hot at all times
Hot in on or start
Ia (left dash reinforcement)
Igsw
Mil
Mrel
Mt2
Mt4
Mtd
Mtl
Nssd
Nssl
Passenger side j/b (behind right side of dash)
Power
Red
Sil
Skid control ecu w/ actuator (w/ vsc) (right side of engine compt)
Spd
Speedo
Stop fuse 15a
Stoplight switch (behind left side of dash)
Stp
Tach
Thwo
Transmission control switch
Vcp2
Vcpa
Vpa
Vpa2
W/ vsc
W/o vsc
Wfse

A/T Wiring Diagram (2 of 2) for Lexus ES 300 2003

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List of elements for A/T Wiring Diagram (2 of 2) for Lexus ES 300 2003:

(dash harn, near grommet on right side of firewall)
(dash harn, near grommet on right side of firewall) i6
(dash harn, near stereo component amplifier)
Acc
B109
B118
B129
B78
B98
Counter gear speed sensor (near rear of engine)
Dsl
E01
E02
E03
E04
E05
E10
Ee (left side of cylinder head)
Ef (intake side of cylinder block)
Electronically controlled transmission solenoid (on transaxle)
Engine control module (ecm) (behind right side of dash)
Engine controls system
Engine coolant temperature sensor (on top front of engine)
Engine room j/b (on left side of engine compt)
Eom
Hot at all times
Ignition switch
J/c 11 (behind lower right side of dash)
Lock
Me01
Nc+
Nc-
Nca
Nsw
Nt+
Nt-
P/n
Park/ neutral position switch (on transaxle)
Passenger side j/b (behind right side of dash)
Red
Sl1+
Sl1-
Sl2+
Sl2-
Sl3+
Sl3-
Slt+
Slt-
Sta
Start
Tho
Throttle position sensor (on throttle body)
Thw
Turbine speed sensor (near left rear of engine)
Vta1
Vta2
W/ vsc
W/o vsc

TRUNK, TAILGATE, FUEL DOOR

Trunk, Tailgate, Fuel Door Wiring Diagram for Lexus ES 300 2003

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List of elements for Trunk, Tailgate, Fuel Door Wiring Diagram for Lexus ES 300 2003:

B11
B17 (behind (left rear combination light)
B20
Bdr1
Bdr2
Be (at lower center of back panel)
Body ecu
Diode (at left "c" pillar)
Dome fuse 7.5a
Door 1 fuse 25a
Door 2 fuse 25a
Driver side j/b (behind left side of dash)
Ecu-b fuse 10a
Engine room j/b (on left side of engine compt)
Fuel lid opener solenoid (on left side of luggage compt)
Fuel lid opener switch
Fuel open fuse 5a
G14
Gnd
Hot at all times
Ia (at dash reinforcement, left side)
Id (at dash brace, right side)
Junction connector 1 (behind upper left side of dash)
Junction connector 4 (behind left center of dash)
K13
Lgcy
Luggage com- partment light
Luggage compartment door opener motor & light switch (on center rear of luggage compt lid)
Luggage compartment door opener switch
Main luggage compartment door opener switch
Noise filter (near left rear wheelwell)
Red
Sgnd
Tkul
Tr+