All Wiring Diagrams for Lexus IS 300 SportCross 2003

AIR CONDITIONING

Automatic A/C Wiring Diagram for Lexus IS 300 SportCross 2003

List of elements for Automatic A/C Wiring Diagram for Lexus IS 300 SportCross 2003:

(at front of intake manifold) ea
(at left fender apron)
(at left fender apron) ec
(at right side of firewall) ih
(in engine harness)
(in engine harness, right front of engine compt)
(on left side of engine compt, near engine control module) junction connector 3
(on right side of radiator) water temperature switch
A/c ambient temperature sensor (behind left center of front bumper fascia)
A/c comp relay
A/c condenser fan motor
A/c control assembly
A/c diode (behind right end of dash)
A/c fuse 10a
A/c magnetic clutch & lock sensor (on left front of engine, on a/c compressor)
A/c room temperature sensor (behind lower left center of dash)
A/c solar sensor (on top left side of dash)
A/c thermistor
A/c triple pressure switch (on left front of engine compt, behind bumper fascia)
A12
A13
Acc
Acmg
Aif
Air
Air inlet control servo motor (behind upper right side of dash)
Air mix control servo motor (behind upper right center of dash)
Air vent mode control servo motor (behind upper right center of dash)
Amc
Amh
Aod
Aof
Blower motor (behind lower right end of dash)
Blower motor controller (behind upper right center
Blw
Cds fan fuse 30a
Driver side j/b (behind lower left end of dash)
Dual
Ecu-ig fuse 10a
Engine control module (left front of engine compt)
Engine room 1 r/b (on right rear of engine compt)
Engine room 3 r/b (on left side of engine compt)
Exterior lights system
Fan
Fan 1 relay
Fan 2 relay
Fan 3 relay
Front wiper motor (in engine compt, below lower +2
Gnd
H10
H12
Hazd
Heater fuse 40a
Hot at all times
Hot in on or acc
Hot in on or start
Htr relay
I12
I4 (in dash harness, at top center of dash)
Ig (at right dash reinfor- cement)
Ih (at right side of firewall)
Ill+
Ill-
Instrument cluster system
Interior lights system
Junction connector
Junction connector (behind upper right side of dash)
Junction connector 10 (behind upper right side of dash)
Junction connector 2 (on left side of engine compt, near engine control module)
Junction connector 8 (behind upper right side of dash)
Lck1
Left side of windshield)
Mpx+
Mpx-
Mpx-b fuse 10a
Mpx1
Of dash)
P-s/b
Passenger side j/b (behind lower right end of dash)
Pkb
Pnk
Pre
Pwr
Radiator fan motor
Radio 2 fuse 10a
Rdi fan fuse 30a
Red
Single
Snow
Tam
Tpi
Tpm
Transmissions system
Transmissions system warning system
Wip

ANTI-LOCK BRAKES

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

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

+bi
Abs & ba & traction vsc actuator (on right side of engine compartment, forward of strut tower)
Abs 1 fuse 60a
Abs 2 fuse 7.5a
Abs mtr relay
Abs sol relay
Ast
Brake fluid level warning switch (on brake fluid reservoir, on top of brake master cylinder)
Ec (at left fender apron)
Ecu-b2 fuse 7.5a
Engine room 1 r/b (on right rear of engine compt)
Engine room 2 r/b (on right rear of engine compt)
Fl+
Fl-
Fr+
Fr-
Fss
Gnd1
Gnd2
Gnd3
Gnd4
Hot at all times
I6 (in dash harness, behind left side of dash)
Id (at left side of firewall)
Ih (at right side of firewall)
Junction connector 5 (behind left end of dash, above driver side j/b)
Lbl
Left front abs speed sensor
Mrf
Nca
Passenger side j/b (behind lower right end of dash)
Pmc
Pmc2
Pressure sensor 1
Pressure sensor 2
Red
Relay
Right front abs speed sensor
S15
S18
Sflh
Sflr
Sfrh
Sfrr
Skid control ecu (left 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 IS 300 SportCross 2003

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

+bo
Abs ind
Bat
Bj (at left front floor panel)
Brake ind
Brake pedal load sensing switch
Brl
C10
Combination meter
Computer data lines system
Csw
D/g
Driver side j/b (behind lower left end of dash)
Ecu-ig fuse 10a
Eng+
Eng-
Engine control module (on left front of engine compt, in protective case)
Ess
Fro
Fsw+
Fsw-
Gauge fuse 10a
Gl1
Gl2
Gss
Gyaw
Headlights system
Hot at all times
Hot in on or start
Ie (at left front floor panel center)
Ig1
Ih (at right side of firewall)
Ind
Junction connector 6 (behind left side of dash, forward of instrument cluster)
Junction connector 7 (behind upper right side of dash)
Left rear abs speed sensor
Nca
Neo
Parking brake switch (at base of parking brake lever)
Passenger side j/b (behind lower right end of dash)
Pkb
Pnk
Red
Right rear abs speed sensor
Rl+
Rl-
Rr+
Rr-
S16
S17
Skid control ecu (left side of dash)
Slip ind
Sp1
Speed- dometer
Ss1+
Ss1-
Steering sensor (at base of steering column)
Stop fuse 15a
Stoplight switch (above brake pedal, on bracket)
Stp
Trac off ind
Trac off switch
Trc+
Trc-
Trig
Vsc ind
Vsc warning buzzer
Vscw
Vys
Yaw rate sensor (rear of center console)
Yaw2
Yss

Anti-lock Brakes Wiring Diagram, without VSC (1 of 2) for Lexus IS 300 SportCross 2003

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List of elements for Anti-lock Brakes Wiring Diagram, without VSC (1 of 2) for Lexus IS 300 SportCross 2003:

(left side of dash)
Abs & traction actuator (on right side of engine compartment, forward of strut tower)
Abs 1 fuse 60a
Abs 2 fuse 7.5a
Abs mtr relay
Abs sol relay
Ast
Brake fluid level warning switch (on brake fluid reservoir, on top of brake master cylinder)
Ec (at left fender apron)
Engine room 1 r/b (on right rear of engine compt)
Engine room 2 r/b (on right rear of engine compt)
Fl+
Fl-
Fr+
Fr-
Fss
Gnd1
Gnd2
Gnd3
Gnd4
Hot at all times
Id (at left side of firewall)
Ih (at right side of firewall)
Junction connector 5 (behind left end of dash, above driver side j/b)
Lbl
Left front abs speed sensor
Mrf
Nca
Pmc2
Pressure sensor
Relay
Right front abs speed sensor
S15
S18
Sflh
Sflr
Sfrh
Sfrr
Skid control ecu
Sm1+
Sm1-
Sm2+
Sm2-
Src1
Src2
Srlh
Srlr
Srm1
Srm2
Srrh
Srrr
Vcm2

Anti-lock Brakes Wiring Diagram, without VSC (2 of 2) for Lexus IS 300 SportCross 2003

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List of elements for Anti-lock Brakes Wiring Diagram, without VSC (2 of 2) for Lexus IS 300 SportCross 2003:

(left side of dash)
A/c control assembly
A/t
A12
Abs ind
Brake ind
Brake pedal load sensing switch
Brl
C10
Combination meter
Computer data lines system
Csw
D/g
Driver side j/b (behind lower left end of dash)
Ecu-ig fuse 10a
Eng+
Eng-
Engine control module (on left front of engine compt, in protective case)
Fro
Fsw+
Fsw-
Gauge fuse 10a
Headlights system
Hot at all times
Hot in on or start
Ig+
Ig1
Ih (at right side of firewall)
Ind
Junction connector (on left side of engine compt, near ecm)
Junction connector 6 (behind left side of dash, forward of instrument cluster)
Junction connector 7 (behind upper right side of dash)
Left rear abs speed sensor
M/t
Mpx-
Mpx1
Neo
Parking brake switch (at base of parking brake lever)
Passenger side j/b (behind lower right end of dash)
Pkb
Pnk
Red
Right rear abs speed sensor
Rl+
Rl-
Rr+
Rr-
S16
S17
Skid control ecu
Slip ind
Snow
Sp1
Speed- dometer
Stop fuse 15a
Stoplight switch (above brake pedal, on bracket)
Stp
Trac off
Trac off ind
Trac off switch & snow switch
Trc+
Trc-
Vehicle speed sensor (m/t) (on left rear of transmission)

ANTI-THEFT

Anti-theft Wiring Diagram (1 of 3) for Lexus IS 300 SportCross 2003

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List of elements for Anti-theft Wiring Diagram (1 of 3) for Lexus IS 300 SportCross 2003:

(below center of rear window, on speaker shelf) wireless door lock control receiver
(sedan)
(sedan) (wagon)
(wagon)
A10
Acc
B10
B4 (in body harness, behind left rear wheelwell)
Back door courtesy switch
Becu
Body ecu (behind lower left end of dash, integral with driver side j/b)
Bsub
Bzr
Bzr2
C d
Dcty
Door fuse 20a
Driver side j/b (behind lower left end of dash)
Ecu-ig fuse 10a
Exterior lights system
Flasher relay
Gnd2
Ground
Haz
Hot at all times
Hot in acc or on
Hot in on or start
I2 (behind left side of dash)
J/c 12 (above left left rear wheelwell) j/c 17 (above left rear fenderwell)
J/c 12 (above left left rear wheelwell) j/c 17 (above left rear fenderwell)
Junction conenctor 5 (behind left end of dash, above driver side j/b)
Junction connector 16 (above right rear fenderwell)
Junction connector 6 (behind left side of dash, forward of instrument cluster)
Keyless buzzer (near top of left front wheelwell, inside fender)
L10
Left front door courtesy switch
Left rear door courtesy switch
Left rear door lock detection switch
Lgcy
Lsr
Lswp
Luggage compt door courtesy switch
Mpx1
Mpx2
Mpx3
Obd2
Pcty
Prg
Radio 2 fuse 10a
Rcty
Rda
Right front door courtesy switch
Right rear door courtesy switch
Sedan
Tail relay
Wagon

Anti-theft Wiring Diagram (2 of 3) for Lexus IS 300 SportCross 2003

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List of elements for Anti-theft Wiring Diagram (2 of 3) for Lexus IS 300 SportCross 2003:

(in left front door) junction connector 11
(sedan)
(wagon)
Alt fuse 120a
Bdm
Bk (at right front floor panel)
Driver side j/b (behind lower left end of dash)
Efi fuse 25a
Efi relay
Engine room 1 r/b (on right rear of engine compt)
Engine room 2 r/b (on right rear of engine compt)
Head lp relay
Headlights system
Horn fuse 10a
Horn relay
Horn system
Hot at all times
Ih (at right side of firewall)
J/c 12 (above left rear fenderwell) j/c 17 (above left rear fenderwell)
Junction connector 15 (on left side of luggage compt, behind left fenderwell)
Junction connector 16 (above right rear fenderwell)
Kul
Left front door key lock & unlock switch & door lock detection switch
Lock
Lock detect
Lswd
Luggage compartment door key unlock switch
Main fuse 40a
Power window master switch
Red
Right front door lock detection switch
Right rear door lock detection switch
Sedan
Unlk
Wagon

Anti-theft Wiring Diagram (3 of 3) for Lexus IS 300 SportCross 2003

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List of elements for Anti-theft Wiring Diagram (3 of 3) for Lexus IS 300 SportCross 2003:

(12-18 not used)
(20-21 not used)
(5-6 not used)
(7-9 not used)
(9-11 not used)
(behind upper left side of dash) diode (fog light)
+b1
A/c control assembly
A10
A12
A13
Batt
C10
Code
Combination meter
Data link connector 3 (behind lower left side of dash)
Dome fuse 7.5a
Door dl fuse 15a
Dswh
Ec (at left fender apron)
Ecu-b2 fuse 7.5a
Engine control module (on left front of engine compt, in protective case)
Engine hood courtesy switch (on front center of engine compt, near hood latch)
Eom
G11
Ground
Head
Horn
Hot at all times
Hot in on or start
I11
I2 (behind left side of dash)
Ign fuse 7.5a
Igsw
Ih (at right side of firewall)
Imld
Ind
Ind security
J/c 3 (near engine control module)
J/c 5 (above driver side j/b)
J/c 6 (behind left side of dash, forward of instrument cluster) b
J/c 7 (behind upper right side of dash)
Ksw
Lug
Mpx+
Mpx-
Mpx-b fuse 10a
Mpx1
Mpx2
Mrel
Multi- display
Navi
Passenger side j/b (behind lower right end of dash)
Rxck
Sh-
Sil
Tail
Theft deterrent ecu (behind left end of dash)
Theft deterrent horn (on left side of engine compt, on strut tower)
Transponder key amplifier (on steering column, near ignition switch)
Txct
Unlock warning switch

BODY CONTROL MODULES

Body Control Modules Wiring Diagram for Lexus IS 300 SportCross 2003

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

(wagon)
Acc
Act+
Act-
Actd
Anti-theft system
B10
Bcty
Bdsu
Becu
Body ecu (behind lower left end of dash, integral with driver side j/b)
Bsub
Bzr
Bzr2
Computer data lines system
Dbkl
Dclp
Dcty
Defogger system
Dfg
Door fuse 20a
Door locks system
Door locks system door locks system
Driver side j/b (behind lower left end of dash)
Ecu-ig fuse 10a
Engine controls system
Exterior lights system
Gnd
Gnd2
H10
Haz
Hot at all times
Hot in acc or on
Hot in on or start
Hot w/ tail relay energized
I2 (in dash harness, behind left side of dash)
Ile
Instrument cluster system
Interior lights system
Junction connector 5 (behind left end of dash, above driver side j/b)
Ksw
L10
Lgcy
Lsr
Lswp
Mpx-b fuse 10a
Mpx1
Mpx2
Mpx3
Obd2
Panel fuse 7.5a
Passenger side j/b (behind lower right end of dash)
Pclp
Pcty
Pml
Pmul
Power tops system
Power windows system
Prg
Radio 2 fuse 10a
Rcty
Rda
Red
Rld
Rlu
Rrd
Rru
Tail
Tr+
Trunk, tailgate & fuel doors system
Warning system

COMPUTER DATA LINES

Computer Data Lines Wiring Diagram for Lexus IS 300 SportCross 2003

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

(at right front floor panel) bk
(behind lower left end of dash) driver side j/b
A/b
A/c control assembly
A11
A12
A13
B10
Bat
Bk (at right front floor panel)
Body ecu (behind lower left end of dash, integral with driver side j/b)
Center air bag sensor assembly (below center of dash, on transmission tunnel)
Combination meter
D/g
Data link connector 3 (behind lower left side of dash)
Driver side j/b (behind lower left end of dash)
Eb (at center left side of intake manifold)
Engine control module (on left front of engine compt, in protective case)
G11
Hot at all times
Ih (at right side of firewall)
J/c 16 (sedan) (above right rear fenderwell)
Mpx+
Mpx-
Mpx1
Mpx2
Mpx3
Multi- display
Obd fuse 7.5a
Obd2
Passenger side j/b (behind lower right end of dash)
Power window master switch
S16
S17
Sil
Skid control ecu
Tac
Tach
Theft deterrent ecu (behind left end of dash)
Wagon
Wfse

COOLING FAN

Cooling Fan Wiring Diagram for Lexus IS 300 SportCross 2003

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

A/c condenser fan motor
A/c control assembly
A/c diode (behind right end of dash)
A/c single pressure switch (on left front of eng compt)
A12
A13
Acc
Acmg
Cds fan fuse 30a
Driver side j/b (behind lower left end of dash)
E10 (in engine harness, at top left side of engine)
E2 (in engine harness, at left front of engine compartment)
Ec (at left fender apron)
Ecu-ig fuse 10a
Engine control module (on left front of engine compt, in protective case)
Engine coolant temperature sensor (on left front of engine)
Engine room 1 r/b (on right rear of engine compt)
Engine room r/b 3 (on left side of engine compt)
Fan
Fan 1 relay
Fan 2 relay
Fan 3 relay
Gnd
H10
Hot at all times
Hot in on or acc
Hot in on or start
Ih (at right side of firewall)
Instrument cluster system
Junction connector 1 & 2 (on left side of engine compt, near engine control module)
Junction connector 10 (behind upper right side of dash)
Junction connector 19
Junction connector 3 (on left side of engine compt, near engine control module)
Mpx+
Mpx-
Mpx-b fuse 10a
Mpx1
Mpx2
Passenger side j/b (behind lower right end of dash)
Radiator fan motor
Radio 2 fuse 10a
Rdi fan fuse 30a
Red
Thw
Water temperature switch (on right side of radiator)

CRUISE CONTROL

Cruise Control Wiring Diagram (1 of 2) for Lexus IS 300 SportCross 2003

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List of elements for Cruise Control Wiring Diagram (1 of 2) for Lexus IS 300 SportCross 2003:

(m/t)
(on left side of engine comp, near engine control module) junction connector 3
+b2
+bm
A/t
B11
Batt
Ccs
Cl+
Cl-
Computer data lines system
Cruise control clutch switch
D/clsw
Driver side j/b (behind lower left end of dash)
E01
E02
E03
Ea (at front of intake manifold)
Eb (at center left side of intake manifold)
Ec (at left fender apron)
Ecu- ig fuse 10a
Efi fuse 25a
Efi relay
Engine control module (on left front of engine compt, in protective case)
Engine room 1 r/b (on right rear of engine compt)
Engine room 2 r/b (on right rear of engine compt)
Eom
Etcs fuse 15a
Gauge fuse 10a
Ge01
Hot at all times
Hot in on or start
Ign fuse 7.5a
Igsw
Ih (at right side of firewall)
J/c 4 (on left side of engine compt, near engine control module)
Junction connector 1 & 2 (near engine control module)
Junction connector 1 & 2 (on left side of engine compt, near engine control module)
Junction connector 6 (behind left side of dash, forward of instrument cluster)
M/t
Me01
Mpx1
Mpx2
Mrel
Nca
Park/neutral position switch (on right side of transmission)
Passenger side j/b (behind lower right end of dash)
Passenger side j/b (beinind lower right end of dash)
Red
Sp2+
Sp2-
Stop fuse 15a
Stoplight switch (above brake pedal, on bracket)
Stp
Stt-
Throttle control motor (on throttle body)
Transmission control switch (shift lock control ecu)
Vpa
Vpa2
Vta
Vta2

Cruise Control Wiring Diagram (2 of 2) for Lexus IS 300 SportCross 2003

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List of elements for Cruise Control Wiring Diagram (2 of 2) for Lexus IS 300 SportCross 2003:

(behind lower left side of dash) data link connector (dlc) 3
(in engine harness, at top left side of engine) e10
(in engine harness, at top left side of engine) e8
(on left side of engine compt, near engine control module) junction connector 4
(on left side of engine compt, near engine control module) junction connectors 1 & 2
A/t
Accel position sensor (on center rear of engine, on throttle body)
Bat
C10
Cancel
Ccs
Combination meter
Computer data lines system
Cruise
Cruise control switch
Cruise ind
Driver side j/b (behind lower left end of dash)
Ea (at front of intake manifold)
Eb (at center left side of intake manifold)
Ecc
Hot at all times
Ie (at left front floor panel center)
Ig+
Ih (at right side of firewall)
Junction connector 7 (behind upper right side of dash)
M/t
Mpx-b fuse 10a
Obd fuse 7.5a
Passenger side j/b (behind lower right end of dash)
Red
Res/acc
S16
Set/coast
Skid control ecu
Speedometer
Throttle position sensor (on throttle body)
Vehicle speed sensor (combination meter) (m/t)
Vehicle speed sensor (electronically controlled transmission) (on left rear of transmission)

DEFOGGERS

Front Defogger Wiring Diagram for Lexus IS 300 SportCross 2003

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List of elements for Front Defogger Wiring Diagram for Lexus IS 300 SportCross 2003:

A12
A13
Body ecu
Combination meter
Defogger & mirror heater switch (a/c control assembly)
Deicer relay
Dfg
Driver side j/b (behind lower left end of dash)
Ec (at left fender apron)
Engine control module (on left front of engine compt)
Fr def fuse 20a
Front window diecer
Gauge fuse 10a
Hot at all times
Hot in on or start
K10
K11
Mpx+
Mpx-
Mpx1
Mpx2
Theft deterrent ecu (behind left end of dash)

Rear Defogger & Heated Mirrors Wiring Diagram for Lexus IS 300 SportCross 2003

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List of elements for Rear Defogger & Heated Mirrors Wiring Diagram for Lexus IS 300 SportCross 2003:

A12
A13
Alt fuse 120a
Bm (at left upper side of back panel)
Body ecu
Combin -ation meter
Dfg
Driver side j/b (behind lower left end of dash)
Engine control module (on left front of engine compt)
Engine room 1 r/b (on right rear of engine compt)
Gauge fuse 10a
H11
Hot at all times
Hot in on or start
Ih (at right side of firewall)
J/c 11 (in left front door)
J/c 5 (behind left end of dash)
K12
L10
Left mirror heater (left remote control mirror)
Mhtr
Mir htr fuse 15a
Mir htr relay
Mpx+
Mpx-
Mpx1
Mpx2
Noise filter (def cds)
Noise filter (rear window defogger)
Passenger side j/b (below lower right end of dash)
R19
R20
Rear window defogger
Right mirror heater (right remote control mirror)
Rr def fuse 40a
Rr def relay
Sedan
Theft deterrent ecu (behind left end of dash)
Wagon

ENGINE PERFORMANCE

3.0L

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

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

(near ecm) j/c 3
(w/a/t)
(w/m/t)
+b2
+bm
A/c system
Accel position sensor (on center rear of engine, on throttle body)
Acmg
Anti-theft system
Batt
Ccs
Circuit opening relay
Clsw
Code
Computer data lines system
Cruise control system
Data link connector 3 (behind lower left side of dash)
Ec (at left fender apron)
Efi fuse 25a
Efi relay
Eng+
Eng-
Engine control module (ecm) (on left front of engine compt, in protective case)
Engine room r/b 1 (on right rear of engine compt)
Engine room r/b 2 (on right rear of engine compt)
Eom
Etcs fuse 15a
F/ps
Fpr
Gnd
Hot at all times
Ht1b
Ht2b
Igsw
Ih (at right side of firewall)
Imld
J/c 1, j/c 2 (near ecm)
J/c 3 (near ecm)
J/c 5 (behind left end of dash)
Ksw
Mpx1
Mpx2
Mrel
Neo
Ox1b
Ox2b
Passenger side j/b (behind lower right end of dash)
Pnk
Ptnk
Rxck
S16
S17
Sftd
Sftu
Sil
Skid control ecu (behind left end of dash)
Spd
St1-
Sta
Starting/charging system
Stp
Tach
Tbp
Transponder key amplifier (on steering column, near ignition switch)
Trc+
Trc-
Txct
Vapor pressure sensor (under center rear of vehicle)
Vcc
Vpa
Vpa2
Wfse

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

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

(behind lower left end of dash) driver side j/b
(on left side of engine compt) fuel pump resistor
(under left side of vehicle) fuel pump & sender
A/c control assembly
A/t shift main switch (integral to combination switch)
A12
B11
E4 (engine harn, left front of engine compt)
Ea (front side of intake manifold)
Ecc
Electronically controlled transmission pattern select switch
Engine room r/b 3 (on left side of engine compt)
Fuel pmp relay
H13
Ign fuse 7.5a
Ih (at right side of fire- wall)
J/c 15 (on left side of luggage compt)
J/c 7 (behind upper right side of dash)
Mpx-
Passenger side j/b (behind lower right end of dash)
Pnk
Pwr
Sftd
Sftu
Snow
Vsv (acis) (on left side of engine)
Vsv (canister closed valve) (on right front of engine)
Vsv (pressure switching valve) (under center rear of engine)

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

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

(above brake pedal, on bracket) stoplight switch
(behind left side of dash) j/c 6
(behind lower left end of dash) driver side j/b
(engine harn, top left side of engine) e10
Acc
Acis
Ccv
Driver side j/b (behind lower left end of dash)
E01
E02
Ea (front side of intake manifold)
Eb (center side of intake manifold)
Engine control module (ecm) (on left front of engine compt, in protective case)
Engine coolant temperature sensor (on left front of engine)
Evg
Gauge fuse 10a
Gnd
Hot at all times
Hot in on or start
Ht2a
Igf
Ignition switch
Igt
J/c 5 (behind left end of dash)
Lock
Mass airflow meter (on right side of engine compt, behind air box)
Me01
Ox2a
Pnk
Power steering oil pressure sensor (on left front of engine)
Psp
Red
Start
Stop fuse 15a
Tha
Thw
Unlock warning switch
Vout

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

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

(behind lower right end of dash) passenger side j/b
(engine harn, top left side of engine) e6
(on left side of engine compt, on strut tower) igniter
(on left side of engine) noise filter (ignition)
A (or d)
Braided
Combination meter
E5 (engine harn, top left side of engine)
E7 (engine harn, top left side of engine)
Ea (front side of intake manifold)
Fuel injector
Gnd
Heated oxygen sensor (bank 1 sensor 1) (on right side of engine, on exhaust system)
Heated oxygen sensor (bank 1 sensor 2) (on right side of engine, on exhaust system)
Heated oxygen sensor (bank 2 sensor 1) (on right side of engine, on exhaust system)
Heated oxygen sensor (bank 2 sensor 2) (on right side of engine, on exhaust system)
Igf
Ignition coil 1
Ignition coil 2
Ignition coil 3
In1
In2
In3
J/c 16 (above right rear fenderwell)
Mil
Pnk
Red
Speedometer
Tachometer

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

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

(near ecm) j/c 1, j/c 2
A/t indicator light switch (integral to park/neutral position switch) (on right side of trans)
Braided
D n
Ec (at left fender apron)
Electronically controlled transmission solenoid (on left side of transmission)
Engine oil level sensor (on lower left front of engine)
Level
Mt3
O/d direct clutch speed sensor (on left side of trans)
Red
Sln+
Sln-
Slt+
Slt-
Slu+
Slu-
Temp
Transmission control switch (d-4) (integral to shift lock control ecu) nssd
Transmission control switch (l-2)

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

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

(engine harn, top left side of engine)
(front side of intake manifold) ea
(near ecm) j/c 1, j/c 2
(near ecm) j/c 4
Braided
Camshaft position sensor (on left rear of cyl head)
Camshaft timing oil control valve (on left front of cyl head)
Cl+
Cl-
Cooling fans system
Crankshaft position sensor (on right side of engine)
E03
E11
Eb (center side of intake manifold)
Engine control module (ecm) (on left front of engine compt, in protective case)
Engine oil pressure switch (on left front of engine)
Fan
Ge01
Ht1a
Igt2
Igt3
Knk1
Knk2
Knock sensor 1 (on left front of engine block)
Knock sensor 2 (on left rear of engine block)
Mol
Mops
Nco+
Nco-
Ne-
Ocv+
Ocv-
Oil
Ox1a
Prg
Red
Sln+
Sln-
Slt+
Slt-
Slu+
Slu-
Sp2+
Sp2-
Throttle control motor (on throttle body)
Throttle position sensor (on throttle body)
Vehicle speed sensor (on left rear of trans)
Vsv (evap) (on top rear of engine)
Vta
Vta2

EXTERIOR LIGHTS

Back-up Lamps Wiring Diagram for Lexus IS 300 SportCross 2003

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

(a/t)
(m/t)
Back- up light
Back-up light switch (park/ neutral position switch)
Driver side j/b (behind lower left end of dash)
Gauge fuse 10a
Hot in on or start
I11
Junction connector 1 & 2 (on left side of engine compt, near engine control module)
Junction connector 15 (on left side of luggage compt, behind left fenderwell)
Left rear combination light
Right rear combination light

Exterior Lamps Wiring Diagram, Sedan (1 of 2) for Lexus IS 300 SportCross 2003

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List of elements for Exterior Lamps Wiring Diagram, Sedan (1 of 2) for Lexus IS 300 SportCross 2003:

Alt fuse 120a
Auto
Bulb
C10
Combination meter
Driver side j/b (behind lower left end of dash)
Engine room 1 r/b (on right rear of engine compartment)
Gauge fuse 10a
Gnd
H13
Head
High mounted stop light
Hot at all times
Hot in on or start
Hs-
I12
Junction connector 13 (above left rear fenderwell)
Junction connector 14 (on left side of luggage compt, behind left fenderwell)
Junction connector 15 (on left side of luggage compt, behind left fenderwell)
Junction connector 5 (behind left end of dash, above driver side j/b)
K12
Led
Left license plate light
Left rear combination light
Light control switch (combination switch)
Light failure sensor (on left side of luggage compartment)
Noise filter (stop- light) (above left rear fender- well)
Off
Passenger side j/b (behind lower right end of dash)
Rear lights warning light ind
Red
Right license plate light
Right rear combination light
Side marker
St+
St-
Stop fuse 15a
Stop light
Stoplight switch (above brake pedal, on bracket)
Tail
Tail fuse 10a
Tail light
Tail relay
Theft deterrent ecu (behind left end of dash)
Turn signal light
Turn signal light

Exterior Lamps Wiring Diagram, Sedan (2 of 2) for Lexus IS 300 SportCross 2003

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List of elements for Exterior Lamps Wiring Diagram, Sedan (2 of 2) for Lexus IS 300 SportCross 2003:

A10
A12
A13
Body ecu (behind lower left end of dash, integral with driver side j/b)
Combination meter
Driver side j/b (behind lower left end of dash)
Ec (at left fender apron)
Engine room 1 r/b (on right rear of engine compartment)
Flasher relay
Gauge fuse 10a
Gnd
H11
Haz
Hazard switch (a/c control assembly)
Hazd
Hot at all times
Hot in on 0r start
I10
Ih (at right side of firewall)
Junction connector 5 (behind left end of dash, above driver side j/b)
Junction connector 7 (behind upper right side of dash)
Left
Left front parking light
Left front side marker light
Left front side turn signal light
Left front turn signal light
Left turn signal ind
Passenger side j/b (behind lower right end of dash)
Right
Right front parking light
Right front side marker light
Right front side turn signal light
Right front turn signal light
Right turn signal ind
Turn signal switch (combination switch)
Turn-haz fuse 15a

Exterior Lamps Wiring Diagram, Wagon (1 of 2) for Lexus IS 300 SportCross 2003

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List of elements for Exterior Lamps Wiring Diagram, Wagon (1 of 2) for Lexus IS 300 SportCross 2003:

(at right upper side of back panel)
(in rear of liftgate) junction connector 18
Alt fuse 120a
Auto
Bm (at left upper side of back panel)
Bn (at right upper side of back panel)
C10
Combination meter
Driver side j/b (behind lower left end of dash)
Engine room 1 r/b (on right rear of engine compartment)
Gauge fuse 10a
Gnd
H13
Head
High mounted stop light
Hot at all times
Hot in on or start
Hs-
I12
Junction connector (above left rear fenderwell)
Junction connector 13 (above left rear fenderwell)
Junction connector 15 (on left side of luggage compt, behind left fenderwell)
Junction connector 17 (above left rear fenderwell)
Junction connector 18 (in rear of liftgate)
Junction connector 5 (behind left end of dash, above driver side j/b)
K12
Left
Left license plate light
Left rear combination light
Light control switch (combination switch)
Light failure sensor (on left side of luggage compartment)
Noise filter (stop- light) (above left rear fender- well)
Off
Passenger side j/b (behind lower right end of dash)
Rear lights warning light ind
Rear side marker light
Red
Right
Right license plate light
Right rear combination light
St+
St-
Stop fuse 15a
Stop light
Stoplight switch (above brake pedal, on bracket)
Tail
Tail fuse 10a
Tail light
Tail relay
Theft deterrent ecu (behind left end of dash)
Turn signal light
Turn signal light

Exterior Lamps Wiring Diagram, Wagon (2 of 2) for Lexus IS 300 SportCross 2003

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List of elements for Exterior Lamps Wiring Diagram, Wagon (2 of 2) for Lexus IS 300 SportCross 2003:

A10
A12
A13
Body ecu (behind lower left end of dash, integral with driver side j/b)
Combination meter
Driver side j/b (behind lower left end of dash)
Ec (at left fender apron)
Engine room 1 r/b (on right rear of engine compartment)
Flasher relay
Gauge fuse 10a
Gnd
H11
Haz
Hazard switch (a/c control assembly)
Hazd
Hot at all times
Hot in on 0r start
I10
Ih (at right side of firewall)
Junction connector 5 (behind left end of dash, above driver side j/b)
Junction connector 7 (behind upper right side of dash)
Left
Left front parking light
Left front side marker light
Left front side turn signal light
Left front turn signal light
Left turn signal ind
Passenger side j/b (behind lower right end of dash)
Right
Right front parking light
Right front side marker light
Right front side turn signal light
Right front turn signal light
Right turn signal ind
Turn signal switch (combination switch)
Turn-haz fuse 15a

GROUND DISTRIBUTION

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

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

(sedan)
(wagon)
B3 (body harness, behind left rear wheelwell)
B4 (body harness, behind left rear wheel well)
B5 (body harness, under left front seat)
Back door courtesy switch and opener motor
Back door opener relay
Bj (base of left "b" pillar)
Body ecu
Center airbag sensor assembly
Cigarette lighter
Driver side j/b (behind lower left end of dash)
Flash relay
From splice b2 (diagram 2 of 3)
Front and rear wiper and washer switch (combination switch)
Fuel pump
High mounted stop light
I2 (dash harn, behind left side of dash)
Junction connector j/c 11 (in left front door)
Junction connector j/c 15 (on left side of luggage compartment, behind left fenderwell)
L10
Left buckle switch
Left front door key lock & unlock switch & door lock detection switch
Left license plate light
Left rear door lock motor and door lock detection switch
Left rear power window control switch
Left remote control mirror
Left stop light (left rear combination light)
Left taillight (left rear combination light)
Light control switch and dimmer switch (combination switch)
Light failure sensor
Luggage compartment door key unlock switch
Luggage compartment door opener relay
Noise filter (def cds)
Noise filter (stop light)
Power seat control switch (driver's seat)
Power window master switch
Rear fog light switch
Rear side marker light
Remote control mirror switch
Right license plate light
Right stop light (right rear combination light)
Right taillight (right rear combination light)
Seat heater (driver's seat)
Sedan
Sedan only
Steering sensor
Theft deterrent ecu
To ground bm (diagram 2 of 3)
To j/c 5 (diagram 2 of 3)
Transponder key amplifier
Turn signal switch (combination switch)
Unlock warning switch
W/ power seat
W/o power seat
Wagon
Wagon only
Wireless door lock control receiver

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

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

A/c dual pressure switch
A/c magnetic clutch and lock sensor
A/c single pressure switch
A/t
A12
A25
B2 (body harness, center of headliner)
B8 (body harness, center of liftgate)
Back door opener switch
Blower motor controller
Bm (lower left side of luggage compartment)
Bn (lower right side of luggage compartment)
Brake fluid level warning switch
Combination switch
D15
D22
E2 (engine harness, left front of engine compartment)
E3 (engine harness, left front of engine compartment)
E9 (engine harness, top left side of engine)
Ea (front side of intake manifold)
Ec (rear of left front fender)
Engine control module
Engine hood courtesy switch
Engine oil level sensor
Engine room no. 3 r/b
Fan no. 2 relay
From junction connector j/c 15 (diagram 1 of 3)
From pin g5, driver side j/b (diagram 1 of 3)
Front window deicer
Front wiper motor
Headlight cleaner control relay
Heated oxygen sensor (bank 1 sensor 1)
Heated oxygen sensor (bank 1 sensor 2)
Heated oxygen sensor (bank 2 sensor 1)
Heated oxygen sensor (bank 2 sensor 2)
High mounted stop light
I3 (dash harness, behind left side of dash)
If (lower right center of dash, forward of center floor console)
Ig (behind upper right end of dash)
Igniter
Inner mirror
Junction connector j/c 1/2 (on left side of engine compartment, near engine control module)
Junction connector j/c 3 (on left side of engine compartment, near engine control module)
Junction connector j/c 4 (on left side of engine compartment, near engine control module)
Junction connector j/c 5 (behind left side of dash, behind driver side j/b)
Junction connector j/c 7 (behind upper right side of dash)
Left front fog light
Left front parking light
Left front side marker light
Left front side turn signal light
Left front turn signal light
Left headlight control ecu
Left license plate light
Left rear combination light
Left vanity light
M/t
Moon roof control ecu
Moon roof control switch
Multi- display
Personal light
Radiator fan motor
Radio and player
Rear window defogger
Rear wiper motor
Remote controller (navigation)
Right license plate light
Right rear combination light
Right vanity light
Skid control ecu
Stereo component amplifier
To ground bj (diagram 1 of 3)
W/ moon roof
W/o moon roof
Wagon only
Wire to fcc holder (in roof, near moon roof ecu)

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

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

(body harness, under right front seat)
(wagon)
A/c control assembly
A/t
A18
Abs & ba & trac & vsc actuator
Abs & ba & trac actuator
B17
B28
B7 (body harness, behind left wheelwell)
B7 (body harness, under right front seat) (sedan)
Bk (under right front seat)
Center air bag sensor assembly
Combination meter
Data link connector (dlc) 3
Daytime running light relay (main)
Daytime running light relay no. 3
Daytime running light relay no. 4
Daytime running light resistor
Efi relay
Electronically controlled transmission pattern select switch
Engine room no. 1 r/b (right rear of engine compt)
Engine room no. 2 r/b (right rear of engine compt)
Glove box light
Headlight beam level control ecu
I5 (dash harn, behind right end of dash)
Ih (behind right kick panel)
Junction connector j/c 16 (above right rear fender- well)
Junction connector j/c 7 (behind upper right side of dash)
M/t
Navigation ecu
Passenger side j/b (behind lower right end of dash)
Power outage (luggage)
Power outlet
Power outlet relay
Power seat control switch (front passenger's seat)
Rheostat
Right buckle switch and seat belt warning occupant detection sensor
Right door lock control switch
Right front door lock motor and door lock detection switch
Right front fog light
Right front parking light
Right front power window control switch
Right front side marker light
Right front side turn signal light
Right front turn signal light
Right headlight control ecu
Right mirror heater (remote control mirror)
Right rear door lock motor and door lock detection switch
Right rear power window control switch
Seat heater (front passenger's seat)
Seat heater switch (driver's seat)
Seat heater switch (front passenger's seat)
Sedan
Shift lock control ecu
Starter relay
Trac off switch
Trac off switch and snow switch
W/ power seats
W/ vsc
W/o power seats
W/o vsc
Wagon
Water temperature switch
Wireless door lock control receiver
Woofer

HEADLIGHTS

Headlamps Wiring Diagram (1 of 2) for Lexus IS 300 SportCross 2003

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List of elements for Headlamps Wiring Diagram (1 of 2) for Lexus IS 300 SportCross 2003:

+b1
Acc
Anti-theft system
Auto
Automatic light control sensor (on top left side of dash)
B10
Becu
Bl (at left rear quarterpanel)
Bn (at right upper side of back panel)
Body ecu (behind lower left end of dash, integral with driver side j/b)
Bsub
Cltb
Clte
Clts
Combination switch
Computer data lines system
Dcty
Dimmer switch
Diode (fog light)
Door fuse 20a
Driver side j/b (behind lower left end of dash)
Ecu-b2 fuse 7.5a
Exterior lights system
Flash
Foglight switch
Head
High
Hot at all times
Hot in acc or run
Hot w/ tail relay energized
Ill+
Junction connector 12 (sedan) (above left rear fenderwell) junction connector 18 (wagon) (in rear of liftgate)
Junction connector 15 (behind left fenderwell)
Junction connector 5 (behind left end of dash, above driver side j/b)
Left rear fog light (left rear combination light)
Lgcy
Light control switch
Low
Lsr
Lswp
Mpx-b fuse 10a
Mpx1
Mpx2
Mpx3
Obd2
Off
Panel fuse 7.5a
Passenger side j/b (behind lower right end of dash)
Pcty
Radio 2 fuse 10a
Rcty
Rear fog light switch
Red
Right rear fog light (right rear combination light)
Sedan
Solid state
Tail
Theft deterrent ecu (behind left end of dash)
W/ rear fog light
W/o rear fog light
Wagon

Headlamps Wiring Diagram (2 of 2) for Lexus IS 300 SportCross 2003

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List of elements for Headlamps Wiring Diagram (2 of 2) for Lexus IS 300 SportCross 2003:

(on right rear of engine compartment) engine room 1 r/b
C10
Chg-
Combination meter
Daytime running light relay 3 & 4 (on right front of engine compt, beside air box)
Daytime running light resistor (on right side of engine compt, on strut tower)
Dimmer relay
Driver side j/b (behind lower left end of dash)
Drl
Drl 1 fuse 7.5a
Drl 2 fuse 30a
E1 (in engine harness, at right front of engine compt)
Ec (at left fender apron)
Ecu-b2 fuse 7.5a
Ecu-ig fuse 10a
Engine room 1 r/b (on right rear of engine compartment)
Engine room 2 r/b (on right rear of engine compartment)
Engine room 3 r/b (on left side of engine compartment)
Fr fog fuse 15a
Fr fog relay
H-lp l lwr fuse 15a
H-lp l upr fuse 10a
H-lp r lwr fuse 15a
H-lp r upr fuse 10a
Head lp relay
Hi beam indicator
Hot at all times
Hot in on or start
I5 (in dash harness, behind right side of dash)
Ih (at right side of firewall)
Ind
Junction connector 6 (behind left side of dash, forward of instrument cluster)
Junction connector 7 (behind upper right side of dash)
Left front fog light
Left headlight control ecu (behind left headlight assembly)
Left high beam headlight
Main daytime running light relay (behind left end of dash)
Main fuse 40a
Parking brake switch (at base of parking lever)
Passenger side j/b (behind lower right end of dash)
Pkb
Red
Right front fog light
Right headlight control ecu (behind right headlight assembly)
Right high beam headlight

Headlamps Leveling Wiring Diagram for Lexus IS 300 SportCross 2003

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

A11
Above driver side j/b)
Anti-lock brakes system
Auto
Combination meter
Combination switch
Dimmer switch
Diode (fog light)
Driver side j/b (behind lower left end of dash)
Ecu-ig fuse 10a
Engine room 1 r/b (on right rear of engine compt)
Flash
Gauge fuse 10a
H10
Head
Head lp relay
Headlight beam level control ecu (behind left end of dash)
Headlight beam level control warning light
High
Hot at all times
Hot in on or start
I10
Ih (at right side of firewall)
Junction connector 5 (behind left end of dash, a
Junction connector 7 (behind upper right side of dash)
Left front height control sensor (on left front of engine compt)
Left headlight beam level control actuator (behind left headlight)
Left rear height control sensor (under left rear of vehicle, attached to suspension control arm)
Lh+
Lh-
Lh1 (s1)
Lh2 (s2)
Lh3 (s3)
Lh4 (s4)
Lhe
Lht
Light control switch
Low
Main fuse 40a
Mlcom (b1)
Mrcom (b1)
Off
Passenger side j/b (behind lower right end of dash)
Red
Rh+
Rh-
Rh1 (s1)
Rh2 (s2)
Rh3 (s3)
Rh4 (s4)
Rhe
Rht
Right headlight beam level control actuator (behind right headlight)
Sbf
Sbr
Sgf
Sgr
Shb
Shfl
Shg
Shrl
Spdr
Tail
Theft deterrent ecu (behind left end of dash)
Wng

HORN

Horn Wiring Diagram for Lexus IS 300 SportCross 2003

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List of elements for Horn Wiring Diagram for Lexus IS 300 SportCross 2003:

Combination switch
Engine room 1 r/b (on right rear of engine compartment)
Engine room 2 r/b (on right rear of engine compartment)
Horn
Horn fuse 10a
Horn relay
Horn switch
Hot at all times
I11
Left horn
Passenger side j/b (behind lower right end of dash)
Right horn
Theft deterrent ecu (behind left end of dash)

INSTRUMENT CLUSTER

Instrument Cluster Wiring Diagram for Lexus IS 300 SportCross 2003

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List of elements for Instrument Cluster Wiring Diagram for Lexus IS 300 SportCross 2003:

(a/c control assembly) clock
(at left fender apron) ec
(near engine control module) junction connector 2
A/c control assembly
A/t
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
Abs ind
Acc
Anti-lock brakes system
Anti-theft system
B10
B11
B12
B13
B14
Beam ind
Beam level ind
Body ecu
Brake fluid level warning switch (on brake fluid reservoir)
Brake ind
Brl
Buzzer
C10
Charge ind
Combination meter
Computer data lines system
Cruise ind
Door ind
Driver side j/b (behind lower left end of dash)
Driver side side j/b (behind lower left end of dash)
Ect pwr ind
Engine control module (on left front of engine compt, in protective case)
Engine controls, navigation system engine controls system
Engine oil level sensor (on lower left front of engine)
Engine oil pressure switch (on left front of engine)
Exterior lights system
Fuel
Fuel ind
Fuel sender (sub) (under right side of vehicle, forward of right fenderwell)
Fuel sender (under left side of vehicle, forward of left fenderwell)
Gauge fuse 10a
Gnd
Headlights system
Hot at all times
Hot in acc or on
Hot in on or start
Hot w/ tail relay energized
Id (at left side of firewall)
Ie (at left front floor panel center)
Ig+
Ih (at right side of firewall)
Illumination
Interior lights system
Junction connector 10 (behind upper right side of dash)
Junction connector 5 (above driver side j/b)
Junction connector 6 (forward of instrument cluster)
Junction connector 7 (behind upper right side of dash)
Lbl
Lcd
M/t
Malfunction indicator lamp
Mol
Momentary fuel consumption
Mops
Mpx+
Mpx-
Mpx-b fuse 10a
Mpx1
Mpx2
Oil level ind
Oil pressure ind
Out side temp gauge
Panel fuse 7.5
Parking brake switch (at base of parking brake lever)
Passenger side j/b (behind lower right end of dash)
Pkb
Radio 2 fuse 10a
Rear lights ind
Red
S15
S16
Seat belt ind
Security ind
Skid control ecu
Slip ind
Snow ind
Sp1
Speedometer
Srs ind
Srs-b fuse 7.5a
Tachometer
Trac off ind
Turn lh ind
Turn rh ind
Vehicle speed sensor (combination meter) (on left rear of transmission)
Volt
Vsc ind
Vscw
Water temp

INTERIOR LIGHTS

Courtesy Lamps Wiring Diagram (1 of 2) for Lexus IS 300 SportCross 2003

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List of elements for Courtesy Lamps Wiring Diagram (1 of 2) for Lexus IS 300 SportCross 2003:

(behind lower left side of dash) data link connector (dlc) 3
Acc
B10
Backdoor opener switch (wagon)
Bdsu
Becu
Bk (at right front floor panel)
Bl (at left rear quarterpanel)
Bn (at right upper side of back panel)
Body ecu (behind lower left end of dash, integral with driver side j/b)
Bsub
Dclp
Dcty
Dome fuse 7.5a
Door fuse 20a
Driver side j/b (behind lower left end of dash)
Eb (at center left side of intake manifold)
Ecu-ig fuse 10a
G11
Gauge fuse 10a
Gnd
Gnd2
Hot at all times
Hot in on or acc
Hot in on or start
Id (at left side of firewall)
Ignition key cylinder light
Ih (at right side of firewall)
Ile
J/c 15 (behind left fenderwell)
J/c 16 (above right rear fender- well)
J/c 16 (above right rear fenderwell)
J/c 5 (above driver side j/b)
J/c 7 (behind upper right side of dash)
L10
Left front door courtesy light
Left front door courtesy switch
Left rear door lock detection switch
Lgcy
Lsr
Lswp
Mpx-b fuse 10a
Mpx1
Mpx2
Mpx3
Obd2
Passenger side j/b (behind lower right end of dash)
Pclp
Pcty
Pml
Pmul
Prg
Radio 2 fuse 10a
Rcty
Rda
Red
Right door lock control switch
Right front door courtesy light
Right front door courtesy switch
Right front door lock detection switch
Right rear door lock detection switch
Sedan
Sil
Srs-b fuse 7.5
Wagon

Courtesy Lamps Wiring Diagram (2 of 2) for Lexus IS 300 SportCross 2003

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List of elements for Courtesy Lamps Wiring Diagram (2 of 2) for Lexus IS 300 SportCross 2003:

(moon roof control switch) (w/ moon roof)
(sedan) (wagon)
(sedan) c
(wagon) d
A/c control assembly
A12
A13
Back door courtesy switch
Bdm
Bj (at left front floor panel)
Bk (at right front floor panel)
C (sedan)
Combination meter
D (wagon)
Diode (luggage compt light) (sedan: on rear speakr shelf) (wagon: above left rear fenderwall)
Door
Door ind
Engine control module (on left front of engine compartment, in protective case)
Ie (at left front floor panel center)
Interior light
J/c 11 (in left front door)
J/c 12 j/c 17 (above left rear fenderwall)
J/c 15 (behind left fenderwall)
J/c 15 (behind left fenderwell)
Kul
Left front door key lock/ unlock switch & door lock detection switch
Left rear door courtesy switch
Left vanity light
Lock
Lock decect
Lswd
Luggage compartment door courtesy switch
Luggage compartment light
Mpx+
Mpx-
Mpx1
Mpx2
Off
Personal light
Personal light (w/o moon roof)
Power window master switch
Prg
Rda
Red
Right rear door courtesy switch
Right vanity light
Sedan
Theft deterrent ecu (behind left end of dash)
Unlk
Wagon
Wire to ffc holder
Wireless door lock control receiver

Instrument Illumination Wiring Diagram for Lexus IS 300 SportCross 2003

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

(a/t)
(m/t)
A/c control assembly
A12
Ashtray illumi- nation
Cigarette lighter illumi- nation
Combination meter illumination (combination meter)
Driver side j/b (behind lower left end of dash)
Electronic controlled transmission pattern select switch (a/t)
Glove box light
Head
Head- light cleaner switch
Hot at all times
I3 (in dash harness, behind left side of dash)
Ih (at right side of firewall)
Ill-
J/c 5 (above driver side j/b)
J/c 7 (behind upper right side of dash)
J/c 8 (behind upper right side of dash)
J/c 9 (behind upper right side of dash)
Light control switch (combination switch)
Multi- display
Off
Panel fuse 7.5a
Passenger side j/b (behind lower right end of dash)
Radio & player
Rear fog light switch
Red
Remote controller (navigation)
Rheostat
Seat heater switch (driver)
Seat heater switch (front passenger)
Tail
Tail relay
Theft deterrent ecu (behind left end of dash)
Traction "off" switch & snow switch (m/t)
Traction "off" switch (a/t)
Transmission control switch (a/t shift position illumination) (a/t)

NAVIGATION

Navigation Wiring Diagram for Lexus IS 300 SportCross 2003

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List of elements for Navigation Wiring Diagram for Lexus IS 300 SportCross 2003:

(a/t)
(a/t) (m/t)
(behind lower left side of dash) data link connector (dlc) 3
(behind right side of dash)
(behind upper right side of dash) j/c 10
(m/t)
(m/t) (a/t)
+b1
A/t
Acc
Aui+
Aui-
Auo+
Auo-
Bk (at right front floor panel)
C10
Clutch start switch
Combination meter
Ctx+
Ctx-
D j2
Driver side j/b (behind lower left end of dash)
Ecu-ig fuse 10a
F j1
Fl+
Fl-
Gauge fuse 10a
Gnd
Gnd1
Gtx+
Gtx-
Hot at all times
Hot in acc or on
Hot in on or start
Hot in start
I10
I9 (in dash harness, behind top center of dash)
Ie (at left front floor panel center)
If (at right front panel center)
Ig+
Ill
Interior lights system
J/c 1 & 2 (on left side of engine compt, near engine control module)
J/c 1 & 2 (on left side of engine compt, near engine control module)
J/c 16 (above right rear fenderwall)
J/c 19
J/c 6 (behind left side of dash, forward of instrument cluster)
J/c 7 (behind upper right side of dash)
K8 e1
Left front door speaker
Left tweeter
M/t
Multi-display
Mute
Navi
Navi-mute
Navigation ecu
Nca
Park/neutral position switch (on right side of transmission) back-up light switch
Parking brake switch (at base of parking brake lever)
Passenger side j/b (behind lower right end of dash)
Pkb
Pnk
Radio 2 fuse 10a
Re1
Red
Remote controller
Rev
S16
Sedan
Sgnd1
Skid control ecu
Sp1
Spd
St1
Starter fuse 7.5a
Stereo component amplifier (behind right end of dash)
Sync
Theft deterrent ecu (behind left end of dash)
Tv fuse 7.5a
Tx1+
Tx1-
Vehicle speed sensor (combination meter) (m/t)
Vr r
Wagon

POWER DISTRIBUTION

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

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

(behind lower right end of dash) passenger side junction block
(on right rear of engine compartment) engine room relay block 1
Abs 1 fuse 60a
Air conditioning & instrument cluster systems
Alt fuse 120a
Alt-s fuse 7.5a
Am2 fuse 20a
Anti-lock brakes system
Anti-theft system
Anti-theft system & horns system
Anti-theft, body computer, cruise control, door locks, engine controls, exterior lights, headlights, interior lights, instrument cluster, power windows, starting/ charging, transmissions & warning systems
Anti-theft, body computer, door locks, exterior lights, garage door opener, headlights & interior lights systems
Anti-theft, body computer, exterior lights & headlight systems
Anti-theft, exterior lights & headlights systems
Battery
Body computer & interior lights systems
Body computer system & power windows system
Cds fan fuse 30a
Cooling fans system
Cruise control system, engine controls system & transmission systems
D rr p/w fuse 20a
Dimmer relay
Dome fuse 7.5a
Drl 1 fuse 7.5a
Drl 2 fuse 30a
Ecu-b1 fuse 20a
Ecu-b2 fuse 7.5a
Efi fuse 25a
Engine controls, cruise control & transmission systems
Engine controls, transmission, cruise control systems
Engine room relay block 2 (on right rear of engine compartment)
Engine room relay block 3 (on left side of engine compartment)
Etcs fuse 15a
Exterior lights system
Fr fog fuse 15a
Fr fog relay
From a engine room relay block 1 (diagram 1 of 3)
H-lp cln fuse 30a
Head- light relay
Headlights system
Heater fuse 40a
Heater relay
Horn fuse 10a
Left lower head fuse 15a
Left upper headlmp fuse 15a
Main fuse 40a
Mir heater relay
Mir htr fuse 15a
Mpx-b fuse 10a
Obd fuse 7.5a
P fr p/w fuse 20a
P rr p/w fuse 20a
P/seat fuse 30a
P/w relay
Passenger side junction block (behind lower right end of dash)
Radio 1 fuse 20a
Rdi fan fuse 30a
Red
Right lower head fuse 15a
Right upper headlmp fuse 15a
Seats system
Sound systems
Srs-b fuse 7.5a
Starter
Starter relay
Starting/ charging system
To driver side junction block (diagram 2 of 3)
To engine room relay block 1 (diagram 1 of 3)
To ignition switch (diagram 2 of 3)
To power outlet fuse (diagram 3 of 3)
Turn/ hazard fuse 15a
Wiper/ washer system

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

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

(behind lower left end of dash) driver side junction block
A/c fuse 10a
Acc
Air conditioning system
Air conditioning, instrument cluster, shift interlock & sound systems
Am 1 fuse 40a
Anti-lock brakes, cruise control, engine controls, exterior lights, shift interlock & transmission systems
B11
B12
Body computer system & interior lights systems
Body ecu
Bsub
D fr p/w fuse 20a
Deicer relay
Door fuse 20a
Exterior lights system
Fr def fuse 20a
From am2 fuse, engine room relay block 1 (diagram 1 of 3)
From engine room relay block 1 (diagram 1 of 3)
G11
H12
H13
Ignition switch
J/c j10 (behind right side of dash)
K12
Lock
Mirror system
Panel fuse 7.5a
Power tops system
Power windows system
Radio 2 fuse 10a
Red
Rr def fuse 40a
Rr def relay
Run
S/roof fuse 30a
Seat htr fuse 15a
Seats system
Srs acc fuse 10a
Start
Starter fuse 7.5a
Starting/ charging, engine controls & transmission systems
Stop fuse 15a
Tail fuse 10a
Tail relay
To driver side junction block (cig fuse, 15a) (diagram 3 of 3)
To driver side junction block (gauge fuse, 10a) (diagram 3 of 3)
To passenger side junction block (ign fuse, 7.5a) (diagram 3 of 3)
To power outlet relay (diagram 3 of 3)
Trunk, tailgate & fuel door systems
Washer fuse 15a
Wiper fuse 25a
Wiper/ washer systems

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

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

(behind instrument cluster) i1
(behind lower left end of dash) driver side junction block
(behind right kick panel) ih
(under right front seat) bk
A11
Air conditioning, cooling fans, headlights, shift interlock & warning systems
Anti-lock brakes system
Anti-lock brakes, cruise control, engine controls, exterior lights, headlights, instrument cluster, interior lights, starting/ charging, transmission & warning systems
Anti-theft system
Anti-theft, exterior lights & headlights systems
Bk (right front floor panel)
Body ecu
Cellular telephone & exterior lights systems
Cig fuse 15a
Cigar- ette lighter
Cruise control system
Cruise control, engine controls & transmission systems
Cruise control, exterior lights, shift interlock, starting/charging & transmission systems
Defogger & power window systems
Door dl fuse 15a
Ecu-ig fuse 10a
Engine controls system
Flasher relay
From driver side junction block (diagram 2 of 3)
From driver side junction block (radio 2 fuse, 10a) (diagram 2 of 3)
From e driver side junction block (seat htr fuse, 15a) (diagram 2 of 3)
From junction connector j10 (diagram 2 of 3)
From passenger side g junction block (diagram 1 of 3)
Gauge fuse 10a
H11
H13
Headlights system
Ign fuse 7.5a
J/c 16 (above right rear fenderwell)
Junction connector j/c 5 (behind left end of dash)
L10
Navigation system
Passenger side junction block (behind lower right end of dash)
Pnk
Power outlet
Power outlet (luggage)
Power outlet fuse 15a
Power outlet relay
Power tops system
Power windows systems
Rr def relay
Tv fuse 7.5a

POWER DOOR LOCKS

Power Door Locks Wiring Diagram (1 of 3) for Lexus IS 300 SportCross 2003

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List of elements for Power Door Locks Wiring Diagram (1 of 3) for Lexus IS 300 SportCross 2003:

(at left side of firewall)
(at right upper side of back panel) bn
(below center of rear window, on speaker shelf) wireless door lock control receiver
(wagon) (sedan)
A10
Acc
Act+
Act-
Actd
B10
Back door opener switch (wagon)
Bdsu
Becu
Body ecu (behind lower left end of dash, integral with driver side j/b)
Bsub
Bzr
Bzr2
C (sedan) (wagon)
C d
D c
Dcty
Detection
Door fuse 20a
Driver side j/b (behind lower left end of dash)
Ecu-ig fuse 10a
Flasher relay
Gnd2
Ground
H10
Haz
Hot at all times
Hot in acc or on
Hot in on or start
I2 (in dash harness, behind left side of dash)
Junction connector 12 (sedan) junction connector 17 (wagon) (above left rear fenderwell)
Junction connector 16 (above right rear fenderwell)
Junction connector 5 (behind left end of dash, above driver side j/b)
Junction connector 6 (behind left side of dash, forward of instrument cluster)
Keyless buzzer (near top of left front wheelwell, inside fender)
Ksw
L10
Left front door courtesy switch
Left rear door courtesy switch
Left rear door lock motor & door lock detection switch
Lgcy
Lock
Lsr
Lswp
Mpx1
Mpx2
Mpx3
Obd2
Pcty
Pml
Pmul
Prg
Radio 2 fuse 10a
Rcty
Rda
Right front door courtesy switch
Right rear door courtesy switch
Tr+
Unlock warning switch

Power Door Locks Wiring Diagram (2 of 3) for Lexus IS 300 SportCross 2003

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List of elements for Power Door Locks Wiring Diagram (2 of 3) for Lexus IS 300 SportCross 2003:

(above left rear fenderwell)
(behind upper right side of dash) junction connector 7
(in left front door) junction connector 11
(on left side of luggage compt, near fuel filler door) (sedan) luggage compartment door opener relay
(sedan)
(wagon) j/c 17 j/c 12
B4 (in body harness, behind left rear wheelwell)
Back door opener relay (wagon) (above left rear fenderwell)
Bdm
Bk (at right front floor panel)
Bl (at left rear quarterpanel)
Detection
Driver side j/b (behind lower left end of dash)
Junction connector 15 (on left side of luggage compt, behind left fenderwell)
Junction connector 16 (above right rear fenderwell)
Kul
Left front door lock motor, door key lock & unlock switch & door lock detection switch
Lock
Lock detection
Lswd
Passenger side j/b (behind lower right end of dash)
Power window master switch
Right door lock control switch
Right front door lock motor & door lock detection switch
Right rear door lock motor & door lock detection switch
Sedan
Unlk
Wagon

Power Door Locks Wiring Diagram (3 of 3) for Lexus IS 300 SportCross 2003

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List of elements for Power Door Locks Wiring Diagram (3 of 3) for Lexus IS 300 SportCross 2003:

A/c control assembly
A12
A13
Back door courtesy switch & opener motor (at center rear of luggage compt)
Bl (at left rear quarterpanel)
Combination meter
Data link connector 3 (behind lower left side of dash)
Dome fuse 7.5a
Eb (at center left side of intake manifold)
Engine control module (on left front of engine compt, in protective case)
G11
Hot at all times
Ih (at right side of firewall)
Junction connector 12 (above left rear fenderwell)
Junction connector 15 (on left side of luggage compt, behind left fenderwell)
Junction connector 17 (above left rear fenderwell)
Luggage compt door courtesy switch & opener motor
Mpx+
Mpx-
Mpx-b fuse 10a
Mpx1
Mpx2
Passenger side j/b (behind lower right end of dash)
Sedan
Sil
Theft deterrent ecu (behind left end of dash)
Wagon

POWER MIRRORS

Electrochromic Mirror Wiring Diagram for Lexus IS 300 SportCross 2003

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

(in dash harness, behind left side of dash) i7
Bj (at left front floor panel)
Driver side j/b (behind lower left end of dash)
Ec+
Ec-
Ecu-ig fuse 10a
Hot in on or start
Inner mirror
Left remote control mirror
Right remote control mirror
Wire to fcc holder

Power Mirrors Wiring Diagram for Lexus IS 300 SportCross 2003

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

(in left front door) j/c 11
B12
Defogger system
Down
Driver side j/b (behind lower left end of dash)
Ec+
Ec-
Electrochromic mirror circuit
Hot in acc or on
J/c 11 (in left front door)
J/c 5 (behind left end of dash, above driver side j/b)
L10
Left
Left remote control mirror
Mhl
Mhr
Mvl
Mvr
Operation switches
Radio 2 fuse 10a
Remote control mirror switch
Right
Right remote control mirror
Select switches

POWER SEATS

Heated Seats Wiring Diagram for Lexus IS 300 SportCross 2003

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

(behind upper right side of dash)
B5 (w/ power seat)
Bj (at left front floor panel)
Bk (at right front floor panel)
Driver side j/b (behind lower left end of dash)
Driver's seat heater switch
Front passenger's seat heater switch
Hot in on or start
Ih (at right side of firewall)
Interior lights sysytem
J/c 7
Passenger side j/b (behind lower right end of dash)
Seat heater (driver's seat)
Seat heater (front passenger's seat)
Seat htr fuse 15a
Seat)

Power Seats Wiring Diagram for Lexus IS 300 SportCross 2003

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

Bj (at left front floor panel)
Bk (at right front floor panel)
Down
Driver's power seat control switch
Engine room 1 r/b (on right rear of engine compt)
Front
Front passenger's power seat control switch
Front vertical
G10
Hot at all times
P/seat fuse 30a
Passenger side j/b (behind lower right end of dash)
Power seat motor (driver's seat front vertical control)
Power seat motor (driver's seat rear vertical 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 rear vertical control)
Power seat motor (front passenger's seat reclining control)
Power seat motor (front passenger's seat slide control)
Rear
Rear vertical
Reclining
Slide

POWER TOP/SUNROOF

Power Top/Sunroof Wiring Diagram for Lexus IS 300 SportCross 2003

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

(at left front floor panel)
Bcty
Body ecu (behind lower left end of dash)
Close
Dcty
Down
Driver side j/b (behind lower left end of dash)
Ecu-ig fuse 10a
Gnd
Hot at all times
Hot in on or start
Left front door courtesy switch
Ls1
Ls2
Moon roof control ecu (on front center of roof)
Moon roof control switch
Moon roof motor
Moon roof motor & limit switch
Open
Red
S/roof fuse 30a
Solid state

POWER WINDOWS

Power Windows Wiring Diagram for Lexus IS 300 SportCross 2003

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

(at left rear quarterpanel) bl
(at left side of firewall) id
(at right front floor panel) bk
(at right side of firewall) ih
(behind lower left end of dash) driver side j/b
Acc
B10
B11
Bcty
Bdm
Becu
Body ecu (behind lower left end of dash, integral with driver side j/b)
Bsub
Computer data lines system
D fr p/w fuse 20a
D rr p/w fuse 20a
Dcty
Door fuse 20a
Down
Driver side j/b (behind lower left end of dash)
Ecu-ig fuse 10a
Gauge fuse 10a
Gnd
Gnd2
H11
Hot at all times
Hot in acc or on
Hot in on or start
Junction connector 15 (on left side of luggage compt, behind left fenderwell)
Junction connector 16 (above right rear fenderwell)
Junction connector 5 (behind left end of dash, above driver side j/b)
L10
Left front door courtesy switch
Left front power window motor
Left rear power window control switch
Left rear power window motor
Limit sw
Lmt
Mpx-b fuse 10a
Mpx1
Mpx2
Mpx3
Obd2
P fr p/w fuse 20a
P rr p/w fuse 20a
P/w relay
Passenger side j/b (behind lower right end of dash)
Pls
Power window master switch
Pulse sensor
Pwl
Pwr
Radio 2 fuse 10a
Red
Right front power window control switch
Right rear power window control switch
Right rear power window motor
Rigiht front power window motor
Rld
Rlu
Rrd
Rru
Sedan
Sgnd
Wagon

RADIO

Radio Wiring Diagram, Sedan for Lexus IS 300 SportCross 2003

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List of elements for Radio Wiring Diagram, Sedan for Lexus IS 300 SportCross 2003:

(or pnk)
Acc+
Acc+b
Ant+b
Antenna amplifier (behind center of dash)
Aui+
Aui-
Auo+
Auo-
B12
Bu+b
Ctx+
Ctx-
Driver side j/b (behind lower left end of dash)
Engine engine room r/b 1 room r/b 1 (on right (on right rear of engine compt)
Fl+
Fl-
Fr+
Fr-
Gnd
Gnd(e)
Gnd(s)
Gtx+
Gtx-
Hot at all times
Hot in acc or on
If (at right front panel center)
J/c 10 (behind upper right side of dash)
Left front door speaker
Left rear speaker & woofer
Left tweeter
Multi-display (w/ navigation)
Mute
Navi-mute
Navigation ecu
Nca
Passenger side j/b (behind lower right end of dash)
Pnk
Radio & player
Radio 1 fuse 20a
Radio 2 fuse 10a
Rear speaker
Red
Right front door speaker
Right rear speaker & woofer
Right tweeter
Rl+
Rl-
Rr+
Rr-
S-gnd
Stereo component amplifier (behind right end of dash)
Tx+
Tx-
W/ navigation
W/o navigation
Wl+
Wl-
Woofer
Wr+
Wr-

Radio Wiring Diagram, Wagon for Lexus IS 300 SportCross 2003

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List of elements for Radio Wiring Diagram, Wagon for Lexus IS 300 SportCross 2003:

(behind right side of dash) i10
(or pnk)
Acc+
Acc+b
Amp+
Ant
Antenna amplifier (behind center of dash)
Aui+
Aui-
Auo+
Auo-
B12
Bk (at right front floor panel)
Bu+b
Ctx+
Ctx-
Driver side j/b (behind lower left end of dash)
Engine engine room r/b 1 room r/b 1 (on right rear (on right of engine compt)
Fl+
Fl-
Fr+
Fr-
Gnd
Gnd(e)
Gnd(s)
Gtx+
Gtx-
Hot at all times
Hot in acc or on
I10 (behind right side of dash)
If (at right front panel center)
Junction connector 10 (behind upper right side of dash)
Junction connector 13 (above left rear fenderwell)
Junction connector 16 (above right rear fenderwell)
Left front door speaker
Left rear speaker
Left squawker
Left tweeter
Mtr
Multi-display (w/ navigation)
Mute
Navi-mute
Navigation ecu
Nca
Passenger side j/b (behind lower right end of dash)
Pnk
Radio & player
Radio 1 fuse 20a
Radio 2 fuse 10a
Red
Right front door speaker
Right rear speaker
Right squawker
Right tweeter
Rl+
Rl-
Rr+
Rr-
S-gnd
Stereo component amplifier (behind right end of dash)
Tx+
Tx-
W/ navigation
W/o navigation
Wf+
Wf-
Wl+
Wl-
Woofer
Wr+
Wr-

SHIFT INTERLOCK

Shift Interlock Wiring Diagram for Lexus IS 300 SportCross 2003

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

10a
15a
Acc
Driver side j/b (behind lower left end of dash)
Ecu-ig fuse
Engine control module (on left front of engine compt, in protective case)
Gauge fuse
H10
Hot at all times
Hot in acc or on
Hot in on or start
I13
Ih (at right side of firewall)
J/c 1 & j/c 2 (on left side
J/c 10 (behind upper right side of dash)
J/c 5 (behind left end of dash)
J/c 7 (behind upper right side of dash)
J1 f
Key inter- lock solenoid
Kls+
Mt3
Nssd
Of engine compt, near engine control module)
Park/neutral postion switch (a/t indictor light switch) (on right side of transmission)
Passenger side j/b (behind lower right end of dash)
Radio 2 fuse
Shift lock control ecu (below right side of transmission shift lever)
Shift lock control switch
Shift lock solenoid
Sls+
Sls-
Stop fuse
Stoplight switch
Stp
Unlock warning switch

STARTING/CHARGING

Charging Wiring Diagram for Lexus IS 300 SportCross 2003

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List of elements for Charging Wiring Diagram for Lexus IS 300 SportCross 2003:

A/c control assembly
A12
A13
Alt fuse 120a
Alt-s fuse 7.5a
Battery
Battery ground
Charge indicator
Combination meter
Computer data lines system
Driver side j/b (behind lower left end of dash)
Engine control module (on left front of engine compt, in protective case)
Engine room 1 r/b (on right rear of engine compt)
Gauge fuse 10a
Generator
Hot at all times
Hot in on or start
Ie (at left front floor panel center)
Junction connector 1 & junction connector 2 (on left side of engine compt, near engine control module)
Mpx+
Mpx-
Mpx-b fuse 10a
Mpx1
Mpx2
Nca
Passenger side j/b (behind lower right end of dash)
Theft deterrent ecu (behind left end of dash)

Starting Wiring Diagram for Lexus IS 300 SportCross 2003

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List of elements for Starting Wiring Diagram for Lexus IS 300 SportCross 2003:

A/t
Acc
Am2
Am2 fuse 20a
Battery
Battery ground
Clutch starter switch
Driver side j/b (behind lower left end of dash)
Engine control module (on left front of engine compt, e3 in protective case)
Engine room 1 r/b (on right rear of engine compartment)
Ignition switch
Ih (at right side of firewall)
Junction connector 19
Lock
M/t
Main fuse 40a
Nca
Park/neutral position switch (on right side of transmission)
St2
Sta
Start
Starter
Starter fuse 7.5a
Starter relay

SUPPLEMENTAL RESTRAINTS

Supplemental Restraints Wiring Diagram for Lexus IS 300 SportCross 2003

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List of elements for Supplemental Restraints Wiring Diagram for Lexus IS 300 SportCross 2003:

(at base of left "b" pillar) left side air bag sensor
(at right front floor panel) bk
+sl
+sr
-sl
-sr
A11
Acc
Air bag squib (front passenger's air bag assembly)
Air bag squib (steering wheel pad)
Bj (at left front floor panel)
Center air bag sensor assembly (below center of dash, on transmission tunnel)
Combination meter
Data link connector 3 (partial) (behind lower left side of dash)
Driver side j/b (behind lower left end of dash)
Engine controls system
Esl
Esr
Gsw2
Hot at all times
Hot in acc or on
Hot in on or start
Icl+
Icl-
Icr+
Icr-
Ig2
Ign fuse 7.5a
J/c 13 (above left rear fenderwell)
J/c 15 (at left rear quarter panel)
J/c 5 (behind left end of dash, above driver side j/b)
Lbe+
Left buckle switch (inside left front seat belt buckle)
Left curtain shield air bag squib
Left front air bag sensor (on left side of radiator support)
Left pretensioner
Left side air bag squib
Others
Passenger side j/b (behind lower right end of dash)
Pl+
Pl-
Pnk
Pr+
Pr-
Rbe+
Right buckle switch & seat belt warning occupant detection sensor (inside of right front seat belt buckle)
Right curtain shield air bag squib
Right front air bag sensor (on right side of radiator support)
Right pretensioner
Right side air bag sensor (at base of right "b" pillar)
Right side air bag squib
Sedan w/o power seat
Sfl+
Sfl-
Sfr+
Sfr-
Sil
Spiral cable
Srs warning indicator
Srs- acc fuse 10a
Srs-b fuse 7.5a
Ssl+
Ssl-
Ssr+
Ssr-
Vupl
Vupr

TRANSMISSION

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

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

(engine harn, right front of engine compt)
(engine harn, top left side of engine)
(near ecm) j/c 1, j/c 2
+b2
+bm
A/c control assembly
A/t shift main switch (integral to combination switch)
B11
Batt
Computer data lines system
Data link connector 3 (behind lower left side of dash)
Driver side j/b (behind lower left end of dash)
E01
E02
E10
Ea (front of intake manifold)
Eb (center side of intake manifold)
Ec (left front fender apron)
Efi fuse 25a
Efi relay
Electronically controlled transmission pattern select switch
Engine control module (ecm) (left front of engine compt, in protective case)
Engine controls system
Engine coolant temperature sensor (on left front of engine)
Engine room r/b 1 (on right rear of engine compt)
Engine room r/b 2 (on right rear of engine compt)
Eom
Etcs fuse 15a
Evg
Hot at all times
Hot in run or start
Ign fuse 7.5a
Igsw
Ih (behind right kick panel)
Ih (right side of firewall)
J/c 3 (near ecm)
J/c 7 (behind upper right side of dash)
Mass airflow meter (right side of engine compt, behind air box)
Me01
Mpx-
Mpx1
Mpx2
Mrel
Passenger side j/b (behind lower right end of dash)
Pwr
Red
Sftd
Sftu
Sil
Snow
Sta
Starting/ charging system
Stop fuse 15a
Stoplight switch (above brake pedal, on bracket)
Stp
Tha
Thw
Wfse

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

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

(right side of transmission) (integral to park/neutral position switch) a/t indicator light switch
Accel position sensor (on center rear of engine, on throttle body)
Braided
Cl+
Cl-
Combi- nation meter
Computer data lines system
Driver side j/b (behind lower left end of dash)
E03
E8 (top left side of engine)
Ea (front of intake manifold)
Eb (center side of intake manifold)
Electronically controlled transmission solenoid (left side of transmission)
Engine control module (ecm) (left front of engine compt, in protective case)
Engine controls system
Gauge fuse 10a
Ge01
Hot in on or start
J/c 1, j/c 2 (near ecm)
J/c 4 (near ecm)
Mil
Nca
Nco+
Nco-
O/d direct clutch speed sensor (left side of transmission)
Oil
Passenger side j/b (behind lower right end of dash)
Red
Sln+
Sln-
Slt+
Slt-
Slu+
Slu-
Sp2+
Sp2-
Speedo
Tach
Throttle control motor (on throttle body)
Throttle position sensor (on throttle body)
Transmission control switch (d-4) (below front right side of center console)
Transmission control switch (l-2) (below front right side of center console)
Vehicle speed sensor (left rear of transmission)
Vpa
Vpa2
Vta
Vta2

TRUNK, TAILGATE, FUEL DOOR

Tailgate Release Wiring Diagram, Wagon for Lexus IS 300 SportCross 2003

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List of elements for Tailgate Release Wiring Diagram, Wagon for Lexus IS 300 SportCross 2003:

(behind lower left end of dash) driver side j/b
(in body harness, behind left rear wheelwell)
(in dash
Back door courtesy switch & opener motor (at center rear of luggage compt)
Back door opener relay (above left rear fenderwell)
Back door opener switch
Bdsu
Becu
Bn (at right upper side of back panel)
Body ecu
Bsub
Door fuse 20a
Driver side j/b (behind lower left end of dash)
Gnd
Gnd2
Harness, behind left side of dash)
Hot at all times
J/c 15 (on left side of luggage compt, behind left fenderwell)
J/c 17 (above left rear fenderwell)
J/c 5 (behind left end of dash, above driver side j/b)
L10
Lgcy
Mpx-b fuse 10a
Passenger side j/b (behind lower right end of dash)
Red/
Tr+

Trunk Release Wiring Diagram, Sedan for Lexus IS 300 SportCross 2003

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List of elements for Trunk Release Wiring Diagram, Sedan for Lexus IS 300 SportCross 2003:

Becu
Behind left side of dash)
Body ecu
Bsub
Door fuse 20a
Driver side j/b (behind lower left end of dash)
Gnd
Gnd2
Hot at all times
I2 (in dash
J/c 12 (above left rear fenderwell)
J/c 15 (on left side of luggage compt, behind left fenderwell)
J/c 5 (behind left end of dash, above driver side j/b)
L10
Lgcy
Luggage compartment door courtesy switch & opener motor
Luggage compartment door opener relay (on left side of luggage compartment, near fuel filler door)
Mpx-b fuse 10a
Passenger side j/b (behind lower right end of dash)
Red/
Tr+