All Wiring Diagrams for Lexus SC 430 2003 model

AIR CONDITIONING

Automatic A/C Wiring Diagram (1 of 2) for Lexus SC 430 2003

List of elements for Automatic A/C Wiring Diagram (1 of 2) for Lexus SC 430 2003:

• (at right kick panel) ik
• (behind center of dash) air foot control servo motor
• (in engine 4 harness, near breakout to positive battery cable) e1
• (under steering column)
• A/c control assembly (behind center of dash)
• A/c room temperature sensor (behind center of dash)
• A/c thermistor (behind center of dash)
• A10
• Acc
• Aif
• Air
• Amcdr
• Amcpa
• Amhdr
• Amhpa
• Aod
• Aof
• Automatic light control sensor & a/c solar sensor (behind upper right side of dash)
• Blower motor (behind lower right side of dash)
• Blower motor controller (behind right side of dash)
• Blw
• C11
• Cls
• Computer data lines system
• Dgs
• Driver side j/b (behind left kick panel)
• Emop
• Emt1
• Engine room 1 r/b (on right side of engine compt, behind strut tower)
• Exhaust gas sensor (at left front of engine compt)
• Exterior lights system
• F11
• Fan 2 fuse 40a
• Fan fuse 40a
• Ft2cl
• Ft2op
• Gas
• Gnd
• Hazd
• Heater fuse 10a
• Heater fuse 50a
• Hot at all times
• Hot in on or start
• Ill+
• Instrument panel j/b (behind upper center of dash)
• Interior lights system
• Junction connector 14 (behind right side of dash)
• Mpx+
• Mpx-
• Mpx-ig fuse 7.5a
• Multi- display
• Open
• Opn
• Pnk
• Power tops system
• Re1
• Re2
• Red
• Reos
• S5-1
• S5-2
• Sg-1
• Sg-2
• Sg-3
• Sg-4
• Sw1
• Sw2
• Swe
• T16
• Tel1
• Telephone computer (center rear of luggage compartment)
• Telin
• Tilt
• Tp1
• Tpdr
• Tpo
• Tppa
• Tsdr
• Tsl
• Tspa
• Tsr

Automatic A/C Wiring Diagram (2 of 2) for Lexus SC 430 2003

List of elements for Automatic A/C Wiring Diagram (2 of 2) for Lexus SC 430 2003:

• (behind right kick panel) side j/b
• (behind right side of dash) junction connector 14
• (in a/c sub 2 wire harness, near connector for driver's side air mix control servo motor)
• (on left side of engine compt, forward of strut tower) engine room 2 r/b
• (right side kick panel) passenger side j/b ecu
• A/c ambient temperature sensor (at center of front bumper, behind grille)
• A/c comp relay
• A/c fuse 5a
• A/c magnetic clutch & lock sensor (on a/c compressor)
• A/c triple pressure switch (a/c dual & single pressure switch) (at upper left radiator support)
• Acmg
• Air bag
• Air inlet control servo motor (behind right side of dash)
• Air mix control servo motor (driver side) (behind left center side of dash)
• Air mix control servo motor (passenger side) (behind right center side of dash)
• Air vent mode servo motor (behind center of dash)
• C13
• Computer data lines system
• Cooling fan ecu (in front of engine compt, near cooling fan assembly)
• Driver side j/b (behind left kick panel)
• E17
• Ec (left side of cylinder head)
• Ed (rear of left fender)
• Engine control module (at left side of engine compt, in ecu box)
• Etam
• F11
• Fan relay
• Gnd
• Gnd (vz)
• Gnd(m)
• Gnd(s)
• Hot at all times
• Hot in acc or on
• Htr relay
• If (at left kick panel)
• Ii (on left side dash brace)
• Junction connector 3 (in engine room 2 r/b)
• Junction connector 7 (in ecu box)
• Junction connector 8 (behind left end of dash)
• Lcki
• M+(m)
• M+(s)
• M-(m)
• M-(s)
• Mcool
• Mhot
• Mpos 1
• Mpos 2
• Mpos 6
• Mpx1
• Mpx2
• Passenger
• Passenger side j/b (behind right kick panel)
• Pre
• Radio 2 fuse 10a
• Rfc
• Tam
• Vz (gnd)

ANTI-LOCK BRAKES

Anti-lock Brakes Wiring Diagram (1 of 2) for Lexus SC 430 2003

List of elements for Anti-lock Brakes Wiring Diagram (1 of 2) for Lexus SC 430 2003:

• (at left front wheel assembly) left front abs speed sensor
• (at right front wheel assembly) right front abs speed sensor
• (on left side dash brace) ii
• (rear of left fender) ed
• Abs 1 fuse 60a
• Abs 2 fuse 40a
• Abs mtr relay
• Abs sol relay
• Ast
• Brake actuator
• Brake fluid level warning switch (in brake fluid reservoir)
• Driver side j/b (behind left kick panel)
• Ee (rear of left fender)
• Eng+
• Eng-
• Engine control module (at left side of engine compt, in ecu box)
• Engine room 1 r/b (on right side of engine compt, behind strut tower)
• Engine room 2 r/b (on left side of engine compt, forward of strut tower)
• Fl+
• Fl-
• Fr+
• Fr-
• Fss
• Gnd1
• Gnd2
• Gnd3
• Gnd4
• Hot at all times
• If (at left kick panel)
• Junction connector 8 (behind left end of dash)
• Lbl lbl
• Master cylinder pressure sensor (at left rear corner of engine compt)
• Mr1
• Mr2
• Mt+
• Mt-
• Mtt
• Nca
• Neo
• Pmc
• Pnk
• Pps solenoid (at right front of engine)
• R1+
• R2+
• Red
• Sa1
• Sa2
• Sa3
• Sflh
• Sflr
• Sfrh
• Sfrr
• Short pin 3
• Skid control ecu (behind left end of dash)
• Sol+
• Sol-
• Srlh
• Srlr
• Srrh
• Srrr
• Str
• Trc motor relay
• Trc+
• Trc-
• Vcm

Anti-lock Brakes Wiring Diagram (2 of 2) for Lexus SC 430 2003

List of elements for Anti-lock Brakes Wiring Diagram (2 of 2) for Lexus SC 430 2003:

• (behind left side of dash) parking brake switch
• (behind upper center of dash) instrument panel j/b
• (left side of steering column) ig
• +bi
• +bo
• Abs ind
• Abs-ig fuse 7.5a
• Bat
• Brake ind
• Center j/b (behind right center of dash)
• Combination meter
• Computer data lines system
• Csw
• D-ig fuse 10a
• D/g
• D20
• Driver side j/b (behind left kick panel)
• Driver side j/b ecu (behind left kick panel)
• E10
• E14
• E16
• Engine room 2 r/b (on left side of engine compt, forward of strut tower)
• Ess
• Flo
• Ggnd
• Gl1
• Gl2
• Gyaw
• Headlights system
• Hot at all times
• Hot in on or start
• Hot in run or start
• Ig+
• Ig1
• Ig2
• Ign fuse 5a
• Junction connector 13 (behind right side of dash)
• Junction connector 2 (in engine room 2 r/b)
• Left rear abs speed sensor (at left rear wheel assembly)
• Mpx- b2 fuse 7.5a
• Mpx1
• Mpx2
• Nca
• Passenger side j/b (behind right kick panel)
• Pkb
• Pnk
• Red
• Right rear abs speed sensor (at right rear wheel assembly)
• Rl+
• Rl-
• Rr+
• Rr-
• Skid control ecu (behind left end of dash)
• Slip ind
• Sp1
• Ss1
• Ss1+
• Ss1-
• Steering sensor (on steering column)
• Stop fuse 5a
• Stoplight switch (on top of brake pedal bracket)
• Stp
• Trig
• Vgs
• Vsc ind
• Vsc off ind
• Vsc off switch
• Vsc warning buzzer (behind left side of dash)
• Vys
• Yaw
• Yaw rate sensor (under rear of center console)
• Yaw2
• Yss

ANTI-THEFT

Power Door Locks Wiring Diagram (1 of 2) for Lexus SC 430 2003

List of elements for Power Door Locks Wiring Diagram (1 of 2) for Lexus SC 430 2003:

• (behind right side of dash) junction connector 13
• Bdr
• Bl (under driver's seat)
• Bq (at right quarterpanel)
• C16
• Computer data lines system
• Cpse
• Cpub
• Cty
• D-door fuse 25a
• D17
• D18
• D19
• Dle
• Driver door ecu (in driver's door)
• Driver side j/b (behind left kick panel)
• E17
• E18
• Engine room 1 r/b (on right side of engine compt, behind strut tower)
• F11
• F17
• Gnd
• H1 h1
• Hot at all times
• Hot in on or acc
• Hot in on or start
• I15
• I21
• Ill
• Instrument panel j/b (behind upper center of dash)
• J/c 18
• Kul
• L22
• L24
• Lcm+
• Lct
• Lcte
• Lcty
• Left door courtesy switch
• Left door lock control switch (power window master switch)
• Left door lock motor, door key lock & unlock switch, & door unlock detection switch
• Lsw
• Luggage compartment door detection switch (in luggage compt, near lock assembly)
• Luggage compartment door lock motor (in luggage compt, near lock assembly)
• Luggage room j/b (at left rear corner of luggage compt)
• Luggage room j/b ecu (at left rear corner of luggage compt)
• Mpx+
• Mpx-
• Mpx-b1 fuse 7.5a
• Mpx-ig fuse 7.5a
• Mpx1
• Mpx2
• Mul
• P-door fuse 25a
• P10
• P11
• Passenger door ecu (in right door)
• Passenger side j/b (behind right kick panel)
• Pnk
• Pwe
• Pws
• Radio 2 fuse 10a
• Red
• Right door courtesy switch
• Right door lock control switch
• Right door lock motor & door unlock detection switch
• S17
• S18
• Security fuse 7.5a
• Sig
• Sliding roof control ecu (in left rear of luggage compt)
• Tail fuse 7.5a
• Wls1
• Wlsw

Power Door Locks Wiring Diagram (2 of 2) for Lexus SC 430 2003

List of elements for Power Door Locks Wiring Diagram (2 of 2) for Lexus SC 430 2003:

• (16-19 not used)
• (25-28 not used)
• (34-40 not used)
• (6-12 not used)
• (at front center of engine compt) engine hood courtesy switch
• (behind left kick panel) driver side j/b
• (behind right kick panel) passenger side j/b
• (left side of dash, behind gauge assembly) transponder key computer
• (on left side dash brace) ii
• (under steering column) ih
• +b1
• +b2
• Acc
• Agnd
• Airbag
• Ant1
• Ant2
• B11
• B20
• Bzr
• Bzr2
• C10
• C16
• Center j/b (behind right center of dash)
• Cncl
• Code
• Computer data lines system
• Cpub
• Cra relay
• D19
• Data
• Driver side j/b (behind left kick panel)
• Driver side j/b ecu (behind left kick panel)
• Ed (rear of left fender)
• Efii
• Efio
• Engine control module (at left side of engine compt, in ecu box)
• Engine room 1 r/b (on right side of engine compt, behind strut tower)
• Engine room 2 r/b (on left side of engine compt, forward of strut tower)
• Exterior lights system
• F17
• Front controller
• Gnd
• Haz
• Hdcy
• Head lp relay
• Headlights system
• Horn fuse 10a
• Horn relay
• Horn-rly
• Horns system
• Hot at all times
• Hot in on or start
• Hrly
• Ig2
• Ign fuse 5a
• Ih (under steering column)
• Ile
• Imi
• Imo
• Ind
• Interior lights system
• J10
• Junction connector 2 (in engine room 2 r/b)
• Junction connector 3 (in engine room 2 r/b)
• Junction connector 9 & 10 (behind top left end of dash)
• Ksw
• Main fuse 50a
• Main luggage compartment door opener switch
• Mpx-
• Mpx1
• Mpx2
• Park/neutral position switch (on transmission)
• Passenger side j/b (behind right kick panel)
• Passenger side j/b ecu (right side kick panel)
• Pnk
• Rco
• Rda
• Red
• Rssi
• Rxck
• Security indicator light
• Sh-
• Tail-rly
• Theft deterrent ecu (behind left end of dash)
• Theft deterrent horn (at right front of engine compt)
• Transponder key amplifier (behind dash, right of steering column)
• Transponder key coil
• Turn- haz fuse 15a
• Txct
• Unlock warning switch (behind left side of dash)
• Vc12
• Wireless door lock buzzer
• Wireless door lock control receiver (on center of roof header)

BODY CONTROL MODULES

Driver Side J/B ECU Wiring Diagram for Lexus SC 430 2003

List of elements for Driver Side J/B ECU Wiring Diagram for Lexus SC 430 2003:

• Acc
• Am1 fuse 5a
• Anti-lock brakes system
• Anti-theft system
• Bklr
• Bu+
• Bu-
• Cltb
• Clte
• Clts
• Cncl
• Computer data lines system
• Dbil
• Dbkl
• Driver side j/b (behind left kick panel)
• Driver side j/b ecu
• E17
• Engine controls system
• Engine room 1 r/b (on right side of engine compt, behind strut tower)
• Exterior lights system
• Fuel
• Gnd
• Gnd2
• Haz
• Hdcl
• Hdcy
• Hdlo
• Head
• Headlights system
• Hot at all times
• Hot in run or start
• Hrly
• Ig (left side of steering column)
• Ignition switch
• Ii (on left side dash brace)
• Instrument cluster system
• Interior lights system
• Junction connector 13 (behind right side of dash)
• Lock
• Mirrors system
• Mpx-b
• Mpx-b3 fuse 7.5a
• Mpx-ig
• Mpx-ig fuse 7.5a
• Mpx1
• Mpx2
• Mpx3
• Msw
• Panel fuse 5a
• Panel1
• Panel2
• Passenger side j/b (behind right kick panel)
• Passenger side j/b ecu
• Passive restraint system
• Pnk
• R/e
• Red
• Ret
• Run
• Shift interlock system
• Start
• Stp
• Stpa
• Stpi
• Stpo
• Sw1
• Sw2
• Sw3
• Tr+
• Tr1
• Tr2
• Tr3
• Trunk, tailgate, fuel doors system
• Tsw
• Turn lh
• Turn rh
• Turn-haz fuse 15a
• Warning system
• Wiper/washer system

Front Controller Wiring Diagram for Lexus SC 430 2003

List of elements for Front Controller Wiring Diagram for Lexus SC 430 2003:

• Computer data lines system
• Driver side j/b (behind left kick panel)
• Ed (rear of left fender)
• Engine room 1 r/b (on right side of engine compt, behind strut tower)
• Engine room 2 r/b (on left side of engine compt, forward of strut tower)
• Exterior lights system
• Ffog-rly
• Fhhi(1)
• Fhhi(2)
• Fmb3
• Fmig
• Front controller
• Gnd
• H-lp upr fuse 20a
• Headlights system
• Hlhl
• Hlhr
• Horn-rly
• Horns system
• Hot at all times
• Hot in on or start
• Hot w/ head lp relay energized
• Junction connector 3 (in engine room 2 r/b)
• Mpx-b3 fuse 7.5a
• Mpx-ig fuse 7.5a
• Mpx1
• Mpx2
• Passenger side j/b (behind right kick panel)
• Tail-rly
• Wiper/washer system
• Wsh-rly
• Wslv

Luggage Room J/B ECU Wiring Diagram for Lexus SC 430 2003

List of elements for Luggage Room J/B ECU Wiring Diagram for Lexus SC 430 2003:

• Bck1
• Bk/up
• Bp (at left quarterpanel)
• Bubs
• Computer data lines system
• Def
• Defogger system
• Driver side j/b (behind left kick panel)
• Engine room 1 r/b (on right side of engine compt, behind strut tower)
• Exterior lights system
• F12
• F13
• Fuel opn fuse 10a
• Fuel opn(o)
• Fuel opn(p)
• Hic
• Hot at all times
• Hot in on or start
• Interior lights system
• J/c 17
• L-o/c(p)
• L22
• L23
• L24
• Lce1
• Lcm+
• Lcty
• Lgcy
• Luggage room j/b (at left rear corner of luggage compt)
• Luggage room j/b ecu
• Mpx+
• Mpx-
• Mpx-b
• Mpx-b3 fuse 7.5a
• Mpx-ig
• Mpx-ig fuse 7.5a
• P-gnd
• Passenger side j/b (behind right kick panel)
• Pnk
• Red
• Rr j/b fuse 50a
• Stop1
• Stop2
• Stp1
• Stp3
• Tail 2
• Tail1
• Til1
• Til2
• Trunk, tailgate & fuel doors system

Passenger Side J/B ECU Wiring Diagram for Lexus SC 430 2003

List of elements for Passenger Side J/B ECU Wiring Diagram for Lexus SC 430 2003:

• Acc
• Air conditioning system
• Airbag
• Am1 fuse 5a
• Back
• Bkll
• Computer data lines system
• Driver side j/b (behind left kick panel)
• Driver side j/b ecu circuit
• E17
• F11
• Fspt
• Gnd
• Gnd1
• Hdlv
• Headlights system
• Hot at all times
• Hot in on or start
• Ig (left side of steering column)
• Ignition switch
• Ih (under steering column)
• Ile
• Instrument panel j/b (behind upper center of dash)
• Interior lights system
• Lock
• Mpx-
• Mpx-b
• Mpx-b2 fuse 7.5a
• Mpx-ig
• Mpx-ig fuse 7.5a
• Navigation system
• Passenger side j/b (behind right kick panel)
• Passenger side j/b ecu (right side kick panel)
• Passive restraint system
• Pbil
• Pwr
• Red
• Run
• S/m
• S/s
• Snow
• Start
• Transmissions system
• Warning system
• Wip
• Wiper fuse 30a
• Wiper/washer system
• Wng

COMPUTER DATA LINES

Data Link Connector Wiring Diagram for Lexus SC 430 2003

List of elements for Data Link Connector Wiring Diagram for Lexus SC 430 2003:

• (left side of steering column) ig
• (under steering column) ih
• A21
• Air bag sensor assembly (at center of dash below radio)
• B16
• B18
• Bat
• C15
• Center j/b (behind right center of dash)
• Combination meter
• D/g
• D20
• Data link connector (dlc) 3 (behind left side of dash)
• Driver side j/b (behind left kick panel)
• Ec (left side of cylinder head)
• Engine control module (at left side of engine compt, in ecu box)
• F16
• Gateway ecu (behind right side of dash)
• Hot at all times
• J/c 13 (behind right side of dash)
• J/c 4 & 5 (in ecu box)
• J/c 7 (in ecu box)
• J/c 9 & 10 (behind top left end of dash)
• J10
• M6 tc
• Multi- display
• Obd fuse 7.5a
• Sil
• Skid control ecu (behind left end of dash)
• Tac
• Tach
• Wfse

High/Low Bus Wiring Diagram for Lexus SC 430 2003

List of elements for High/Low Bus Wiring Diagram for Lexus SC 430 2003:

• A/c control assembly (behind center of dash)
• A10
• A21
• Acc
• Air
• Air bag sensor assembly (at center of dash, below radio)
• Atx+
• Atx-
• Bag
• Batt
• Bu+
• Bu-
• Bubs
• C10
• C11
• Center j/b (behind right center of dash)
• Combination meter
• Combination switch
• D17
• D20
• Data link connector 3 (behind left side of dash)
• Driver door ecu (in driver's door)
• Driver side j/b (behind left kick panel)
• Driver side j/b ecu (behind left kick panel)
• Driver's power seat ecu (under driver's seat)
• E10
• E16
• E17
• Engine control module (at left side of engine compt, in in ecu box)
• Engine room 2 r/b (on left side of engine compt, forward of strut tower
• F11
• F13
• F16
• F18
• Gateway ecu (behind right side of dash)
• Gnd
• Gtx+
• Gtx-
• Hot at all times
• Hot in on or start
• Hot in on or acc
• Ig (left side of steering column)
• Ih (under steering column)
• Instrument panel j/b (behind upper center of dash)
• J/c 13 (behind right side of dash)
• J/c 9 & 10 (behind top left end of dash)
• J10
• L24
• Luggage room j/b ecu (at left rear corner of luggage compt)
• Mpd1
• Mpd2
• Mpi1
• Mpi2
• Mpl1
• Mpl2
• Mpx
• Mpx+
• Mpx-
• Mpx-b2 fuse 7.5a
• Mpx-ig fuse 7.5a
• Mpx1
• Mpx1 front controller
• Mpx2
• Mpx3
• Multi- display
• P21
• P23
• Passenger door ecu (in right door)
• Passenger mpx-
• Passenger side j/b (behind right kick panel)
• Passenger's power seat ecu (under passenger's seat)
• Pnk
• Radio & player
• Radio 2 fuse 10a
• Red
• S18
• Side j/b ecu
• Sil
• Skid control ecu (behind left end of dash)
• Sliding roof control ecu (in left rear of luggage compt)
• Telephone computer
• Theft deterrent ecu (behind left end of dash)
• Tilt & telescopic ecu (behind left end of dash)
• Tire pressure monitor receiver (behind center of dash, below radio)
• Transponder key computer (left side of dash, behind gauge assembly)
• Tx+
• Tx-
• Tx1
• Txs+
• Txs-
• W/ link system
• W/ navigation
• Wfse

COOLING FAN

Cooling Fan Wiring Diagram for Lexus SC 430 2003

List of elements for Cooling Fan Wiring Diagram for Lexus SC 430 2003:

• A/c triple pressure switch (a/c dual & single pressure switch (at upper left radiator support)
• C11
• C13
• Cooling fan ecu (in front of engine compt, near cooling fan assembly)
• Driver side j/b (behind left kick panel)
• E1 (in engine 4 harness, near breakout to positive battery cable)
• Ed (rear of left fender)
• Engine control module (at left side of engine compt, in ecu box)
• Engine coolant temperature sensor (on top right side of engine)
• Engine room 1 r/b (on right side of engine compt, behind strut tower)
• Engine room 2 r/b (on left side of engine compt, forward of strut tower)
• Ethw
• Fan fuse 2 40a
• Fan fuse 40a
• Fan relay
• Gnd(m)
• Gnd(s)
• Heater fuse 10a
• Hot at all times
• Hot in on or start
• If (at left kick panel)
• Ii (on left side dash brace)
• Junction connector 14 (in engine room 2 r/b)
• Junction connector 3 (in engine room 2 r/b)
• Junction connector 8 (behind left end of dash)
• M+(m)
• M+(s)
• M-(m)
• M-(s)
• Pre
• Rfc
• Thw

CRUISE CONTROL

Cruise Control Wiring Diagram for Lexus SC 430 2003

List of elements for Cruise Control Wiring Diagram for Lexus SC 430 2003:

• (behind left side of dash) data link connector (dlc) 3
• (under center console, near selector lever) shift lock control ecu
• +b1
• +bm
• Accel pedal position sensor (behind left center of dash)
• At4
• Batt
• C10
• C15
• Cancel
• Ccs
• Center j/b (behind right center of dash)
• Combination meter
• Combination switch
• Computer data lines system
• Controlled transmission) (on transmission)
• Cruise
• Cruise control switch
• Cruise ind
• D-ig fuse 10a
• Driver side j/b (behind left kick panel)
• Driver side j/b (behind left kick panel)
• Driver side j/b ecu (behind left kick panel)
• E01
• E02
• E03
• E19
• Eb (right side of cylinder head)
• Ec (left side of cylinder head)
• Ecc
• Ed (rear of left fender)
• Efi fuse 25a
• Efi relay
• Eng+
• Eng-
• Engine control module (at left side of engine compt, in ecu box)
• Engine room 1 r/b (on right side of engine compt, behind strut tower)
• Engine room 2 r/b (on left side of engine compt, forward of strut tower)
• Epa
• Eptk
• Eta
• Etcs fuse 15a
• F15
• Ge01
• Hot at all times
• Hot in on or start
• Ign fuse 5a
• Igsw
• Ih (under steering column)
• Junction conn- ector 2 (in engine room 2 r/b)
• Junction connector 2 (in engine room 2 r/b)
• Junction connector 3 (in engine room 2 r/b)
• Junction connector 4 (in ecu box)
• Junction connector 7 (in ecu box)
• Junction connector 9 (behind top left end of dash)
• Junction connectors 4 & 5 (in ecu j5 box)
• Me01
• Mpx1
• Mpx2
• Mrel
• Nca
• Neo
• Nssd
• Park/ neutral position switch (on transmission)
• Passenger side j/b (behind right kick panel)
• Pnk
• Red
• Res/ acc
• Set/ coast
• Sil
• Skid control ecu (behind left end of dash)
• Sp1
• Sp2+
• Sp2-
• Speedometer
• St1-
• Stop fuse 5a
• Stoplight switch (on top of brake pedal bracket)
• Stp
• Stpi
• Stpo
• T26
• T27
• Throttle control motor & sensor (on throttle body)
• Trc+
• Trc-
• Vcpa
• Vehicle speed sensor (electonically
• Vpa
• Vpa2
• Vptk
• Vta
• Vta2
• Wfse

DEFOGGERS

Heated Mirrors Wiring Diagram for Lexus SC 430 2003

List of elements for Heated Mirrors Wiring Diagram for Lexus SC 430 2003:

• (behind
• (under driver's seat) bl
• Bdr
• Bq (at right quarterpanel)
• Computer data lines system
• Cpub
• D-door fuse 25a
• D17
• D19
• Driver door ecu (in driver's door)
• Driver side j/b (behind left kick panel)
• Engine room 1 r/b (on right side of engine compt, behind strut tower)
• F11
• Gnd
• Hot at all times
• Hot in on or start
• Htr+
• Htr-
• I15
• Instrument panel j/b (behind upper center of dash)
• J/c 18
• Left remote control mirror
• Luggage room j/b (at left rear corner of luggage compt)
• Mirror
• Mirror heater
• Mpx- b1 fuse 7.5a
• Mpx-ig fuse 7.5a
• Mpx1
• Mpx2
• P-door fuse 25a
• P11
• Passenger door ecu (in right door)
• Passenger side j/b (behind right kick panel)
• Right remote control mirror heater
• Right side of dash) j/c 13
• Sig

Rear Defogger Wiring Diagram for Lexus SC 430 2003

List of elements for Rear Defogger Wiring Diagram for Lexus SC 430 2003:

• A/c control assembly (behind center of dash)
• A10
• Acc
• Bn (at left quarterpanel)
• Computer data lines system
• Def
• Defog fuse 30a
• Defog relay
• Dome fuse 7.5a
• E13
• E17
• Gnd
• Hot at all times
• Hot in acc or on
• Ih (under steering column)
• Instrument panel j/b (behind upper center of dash)
• L24
• Luggage room j/b (at left rear corner of luggage compt)
• Luggage room j/b ecu (at left rear corner of luggage compt)
• Mpx+
• Mpx-
• Noise filter (rear window defogger) (at left front corner of luggage compt)
• Passenger side j/b (behind right kick panel)
• R12
• R13
• Radio 2 fuse 10a
• Rear window defogger
• Red

ELECTRONIC POWER STEERING

Electronic Power Steering Wiring Diagram for Lexus SC 430 2003

List of elements for Electronic Power Steering Wiring Diagram for Lexus SC 430 2003:

• +bi
• +bo
• Abs-ig fuse 7.5a
• Bat
• Center j/b (behind right center of dash)
• Combination meter
• D/g
• Data link connector 3 (behind left side of dash)
• Driver side j/b (behind left kick panel)
• E10
• E14
• E16
• Ed (rear of left fender)
• Ee (rear of of fender)
• Ess
• Gnd1
• Gnd2
• Gnd3
• Gnd4
• Hot at all times
• Hot in on or start
• Ig1
• Ih (under steering column)
• J10
• Junction connector 13 (behind right side of dash)
• Junction connector 9 & 10 (behind top left end of dash)
• Mpx-b2 fuse 7.5a
• Mxp1
• Passenger side j/b (behind right kick panel)
• Pnk
• Pps solenoid (at right front of engine)
• Red
• Sil
• Skid control ecu (behind left end of dash)
• Sol+
• Sol-
• Sp1
• Ss1+
• Ss1-
• Steering sensor (on steering column)
• Trig

ENGINE PERFORMANCE

4.3L

4.3L, Engine Performance Wiring Diagram (1 of 6) for Lexus SC 430 2003

List of elements for 4.3L, Engine Performance Wiring Diagram (1 of 6) for Lexus SC 430 2003:

• (behind dash, right of steering column) transponder key amplifier
• (behind right side of dash) j/c 13
• (under steering column) ih
• +b1
• +bm
• A/c system
• Accel pedal position sensor (behind left center of dash)
• Acmg
• B16
• Batt
• C12
• C15
• Ccs
• Center j/b (behind right center of dash)
• Combination meter
• Computer data lines system
• Cooling fans system
• Cpu
• Cruise control system
• Data link connector 3 (behind left side of dash)
• Driver side j/b (behind left kick panel)
• E5 (near ecm)
• Ect pwr
• Ect snow
• Ed (rear of left fender)
• Efii
• Efio
• Eng+
• Eng-
• Engine control module (ecm) (at left side of engine compt, in ecu box)
• Ep1
• Ep2
• Epa
• Eptk
• Etam
• Fpr
• Htl2
• Htr2
• Igsw
• Imi
• Imo
• J/c 9 (behind top left end of dash)
• Mil ind
• Mpx1
• Mpx2
• Mrel
• Neo
• Oxl2
• Oxr2
• Pnk
• Pre
• Ptnk
• Red
• Rfc
• Sil
• Skid control ecu (behind left end of dash)
• Speedometer
• Sta
• Stp
• Tac
• Tach
• Tachometer
• Tam
• Tbp
• Trc+
• Trc-
• Vapor pressure sensor (under left rear of vehicle)
• Vcc
• Vcp1
• Vcp2
• Vcpa
• Vpa
• Vpa1
• Vpa2
• Vptk
• Wfse
• Wsfe

4.3L, Engine Performance Wiring Diagram (2 of 6) for Lexus SC 430 2003

List of elements for 4.3L, Engine Performance Wiring Diagram (2 of 6) for Lexus SC 430 2003:

• (behind left kick panel) driver side j/b ecu
• (in ecu box) j/c 4, j/c 5
• (on top of brake pedal bracket) stoplight switch
• Cir opn relay
• D-ig fuse 10a
• Driver side j/b (behind left kick panel)
• Ed (rear of left fender)
• Efi fuse 25a
• Efi relay
• Engine room r/b 1 (on right side of engine compt, behind strut tower)
• Engine room r/b 2 (on left side of engine compt, behind strut tower)
• Etcs fuse 15a
• F/ pmp relay
• Fuel pump & sender (in fuel tank)
• Fuel pump resistor (left rear of engine compt)
• Hot at all times
• Hot in on or start
• J/c 17 (left quarter panel)
• J/c 2 (in engine room r/b 2)
• Red
• Stop fuse 5a
• Stpi
• Stpo
• Vsv (vapor pressure sensor) (under left rear of vehicle)

4.3L, Engine Performance Wiring Diagram (3 of 6) for Lexus SC 430 2003

List of elements for 4.3L, Engine Performance Wiring Diagram (3 of 6) for Lexus SC 430 2003:

• (behind left kick panel) driver side j/b
• (engine harn, in ecu box)
• (generator) charging system
• (in engine room r/b 2) j/c 2
• (on left side of engine compt, behind strut tower) engine room r/b 2
• (on transmission) park/neutral position switch
• Acc
• Braided
• C14
• Ed (rear of left fender)
• Efi 2 fuse 10a
• Eknl
• Engine control module (ecm) (at left side of engine compt, in ecu box)
• Eoil
• Eol1
• F14
• Hot at all times
• Htl
• Ignition switch
• Knkl
• Knkr
• Left knock sensor (on top center of engine)
• Lock
• Mol
• Nco+
• Nco-
• O/d direct clutch speed sensor (on trans)
• Oil
• Oxl1
• P/n
• Red
• Right knock sensor (on top center of engine)
• Short pin 1
• Short pin 2
• Sln+
• Sln-
• Slt+
• Slt-
• Slu+
• Slu-
• Sp2+
• Sp2-
• Start
• Starter fuse 7.5a
• Starter relay
• Vehicle speed sensor (electronically controlled transmission) (on trans)

4.3L, Engine Performance Wiring Diagram (4 of 6) for Lexus SC 430 2003

List of elements for 4.3L, Engine Performance Wiring Diagram (4 of 6) for Lexus SC 430 2003:

• (behind right kick panel) passenger side j/b
• (on right front of engine) engine oil level sensor
• (on transmission) a/t indicator light switch (integral to park/neutral position switch)
• (under center console, near selector lever) shift lock control ecu
• At4
• Atl
• Braided
• C10
• C16
• Driver side j/b
• Eb (right side of cyl head)
• Ec (left side of cyl head)
• Electronically controlled transmission solenoid (in transmission)
• Engine room r/b 2 (on left side of engine compt, behind strut tower)
• Hot in on or start
• Ign fuse 5a
• Inj fuse 10a
• J/c 4, j/c 5 (in ecu box)
• J/c 7 (in ecu box)
• J/c 9, j/c 10 (behind top left end of dash)
• J10
• Level
• Nssd
• Nssl
• Red
• Sln+
• Sln-
• Slt+
• Slt-
• Slu+
• Slu-
• Temp

4.3L, Engine Performance Wiring Diagram (5 of 6) for Lexus SC 430 2003

List of elements for 4.3L, Engine Performance Wiring Diagram (5 of 6) for Lexus SC 430 2003:

• (engine wire harn, near breakout to fuel inj 5)
• (in ecu box) j/c 6
• (on top right side of engine) noise filter (ignition right bank)
• (right side kick panel) passenger side j/b ecu
• Braided
• E2 (engine wire harn, near breakout to ground eb)
• E2g
• Ec (left side of cyl head)
• Electronically controlled transmission pattern select switch
• Engine coolant temperature sensor (on top right side of engine)
• Fuel inj 1
• Fuel inj 2
• Fuel inj 3
• Fuel inj 4
• Fuel inj 5
• Fuel inj 6
• Fuel inj 7
• Fuel inj 8
• Heated oxygen sensor (bank 1 sensor 1) (on left side of engine, in exhaust manifold)
• Heated oxygen sensor (bank 1 sensor 2) (on exhaust system, near catalytic conv)
• Heated oxygen sensor (bank 2 sensor 1) (on right side of engine, in exhaust manifold)
• Heated oxygen sensor (bank 2 sensor 2) (on exhaust system, near catalytic conv)
• Ih (under steering column)
• Mass airflow (maf) meter (on right side of engine compt, in air intake duct)
• Mpx-
• Pnk
• Pwr
• Snow
• Tha
• Vsv (acis) (on top right rear of engine)
• Vsv (canister closed valve) (on right side of engine)
• Vsv (evap) (on top rear of engine)

4.3L, Engine Performance Wiring Diagram (6 of 6) for Lexus SC 430 2003

List of elements for 4.3L, Engine Performance Wiring Diagram (6 of 6) for Lexus SC 430 2003:

• (at top left rear of engine) noise filter (ignition left bank)
• (engine wire harn, near breakout to fuel inj 5)
• (engine wire harn, near breakout to ground eb)
• (in ecu box) j/c 6
• A/c system
• Acis
• Braided
• Camshaft position sensor (on left front of engine)
• Ccv
• Crankshaft position sensor (on left front of engine)
• E01
• E02
• E03
• Eb (right side of cyl head)
• Eb (side of right cyl head)
• Ec (left side of cyl head)
• Eg2
• Ene
• Engine control module (ecm) (at left side of engine compt, in ecu box)
• Eor1
• Eta
• Etha
• Ethw
• Evg
• Evvl
• Evvr
• G2-
• Ge01
• Htr
• If1l
• If1r
• If2l
• If2r
• Ignition coil & igniter 1
• Ignition coil & igniter 2
• Ignition coil & igniter 3
• Ignition coil & igniter 4
• Ignition coil & igniter 5
• Ignition coil & igniter 6
• Ignition coil & igniter 7
• Ignition coil & igniter 8
• Igt1
• Igt2
• Igt3
• Igt4
• Igt5
• Igt6
• Igt7
• Igt8
• Lcki
• Left camshaft timing oil control valve (on top left side of engine)
• Left vvt sensor (on top left side of engine)
• Me01
• Mops
• Ne+
• Ne-
• Ocr+
• Ocr-
• Ocv+
• Ocv-
• Oil pressure switch (on left front side of engine)
• Oxr1
• Pnk
• Prg
• Red
• Right camshaft timing oil control valve (on top right side of engine)
• Right vvt sensor (on top right side of engine)
• Tha
• Throttle control motor (on throttle body)
• Throttle control sensor (on throttle body)
• Thw
• Vta
• Vta2
• Vvl+
• Vvl-
• Vvr+
• Vvr-

EXTERIOR LIGHTS

Back-up Lamps Wiring Diagram for Lexus SC 430 2003

List of elements for Back-up Lamps Wiring Diagram for Lexus SC 430 2003:

• A/c control assembly (behind center of dash)
• A10
• Air bag sensor assembly (at center of dash, below radio)
• B j4
• B j5
• Back- up light switch
• Bck1
• Bk/up
• Bl (under driver's seat)
• Bp (at left quarterpanel)
• C11
• Combination meter
• Combination switch (on steering column, behind steering wheel) c11
• D-ig fuse 10a
• Drive side j/b (behind left kick panel)
• Driver side j/b (behind left kick panel)
• Driver side j/b ecu (behind left kick panel)
• E10
• Engine control module (at left side of engine compt, in ecu box)
• Engine room 1 r/b (on right side of engine compt, behind strut tower)
• Engine room 2 r/b (on left side of engine compt, forward of strut tower)
• F13
• Front controller
• Gateway ecu (behind right side of dash)
• Hot at all times
• Hot with ig1 relay energized
• J/c 17
• Junction connector 4 & 5 (in ecu box)
• L22
• L24
• Left back- up light
• Luggage room j/b (at left rear corner of luggage compartment)
• Luggage room j/b ecu
• Mpi1
• Mpi2
• Mpl1
• Mpl2
• Mpx+
• Mpx-
• Mpx1
• Mpx2
• P-gnd
• Passenger side j/b (behind right kick panel)
• Passenger side j/b ecu
• Red
• Right back- up light
• Rr j/b fuse 50a
• Skid control ecu (behind left end of dash)
• Tilt & telescopic ecu (behind left end of dash)
• Tire pressure monitor receiver (behind center of dash, below radio)

Exterior Lamps Wiring Diagram (1 of 2) for Lexus SC 430 2003

List of elements for Exterior Lamps Wiring Diagram (1 of 2) for Lexus SC 430 2003:

• (on left side of engine compt, forward of strut tower) engine room 2 r/b
• (rear of left fender) ed
• Bl (under driver's seat)
• Bp (at left quarterpanel)
• Bubs
• C11
• C16
• Center j/b (behind right center of dash)
• Combination switch (on steering column, behind steering wheel)
• Computer data lines system
• Cra relay
• D10
• D20
• Driver side j/b (behind left kick panel)
• Engine room 1 r/b (on right side of engine compt, behind strut tower)
• Fmb3
• Fmig
• Front controller
• Gnd
• High mounted stop light
• Hot at all times
• Hot with ig1 relay energized
• Ig (left side of steering column)
• Instrument panel j/b (behind upper center of dash)
• J/c 17
• J25
• Junction connector (behind right side of dash)
• Junction connector 1 (in engine room 2 r/b)
• Junction connector 14 (behind right side of dash)
• Junction connector 3 (in engine room 2 r/b)
• Junction connector 8 (behind left end of dash)
• L22
• L23
• L24
• Lce lp fuse 7.5a
• Lce1
• Left front parking light
• Left rear combination light
• Left rear side marker light
• Left stop light
• License plate light
• Luggage room j/b (at left rear corner of luggage compartment)
• Luggage room j/b ecu
• Mpx+
• Mpx-
• Mpx-b3 fuse 7.5a
• Mpx-ig fuse 7.5a
• Mpx1
• Mpx2
• P-gnd
• Passenger side j/b (behind right kick panel)
• Red
• Right front parking light
• Right rear combination light
• Right rear side marker light
• Right stop light
• Rr j/b fuse 50a
• Stop1
• Stop2
• Stp1
• Stp3
• Tail fuse 7.5a
• Tail light
• Tail-rly
• Tail1
• Tail2
• Til1
• Til2
• Turn signal light
• Tx1

Exterior Lamps Wiring Diagram (2 of 2) for Lexus SC 430 2003

List of elements for Exterior Lamps Wiring Diagram (2 of 2) for Lexus SC 430 2003:

• (under steering column) ih
• +ig
• A/c control assembly (behind center of dash)
• Bu+
• Bu-
• Center j/b (behind right center of dash)
• Combination meter
• Computer data lines system
• D-ig fuse 10a
• Driver side j/b (behind left kick panel)
• Driver side j/b ecu
• E13
• E18
• Ed (rear of left fender)
• Engine room 1 r/b (on right side of engine compt, behind strut tower)
• F15
• Haz
• Hazard switch
• Hot at all times
• Hot with ig1 relay energized
• Ig+
• Ih (under steering column)
• Junction connector 12 (behind right side of dash)
• Junction connector 13 (behind right side of dash)
• Junction connector 14 (behind right side of dash)
• Junction connector 3 (in engine room 2 r/b)
• Left front turn signal light
• Left turn
• Left turn ind
• Mpx+
• Mpx+b
• Mpx-
• Mpx-b2 fuse 7.5a
• Mpx1
• Mpx2
• Passenger side j/b (behind right kick panel)
• Rear lights ind
• Red
• Right front turn signal light
• Right turn
• Right turn ind
• Stop fuse 5a
• Stoplight switch (on top of brake pedal bracket)
• Stpi
• Tail ind (canada)
• Turn signal flasher relay (behind left side of dash, above steering column)
• Turn- haz fuse 15a

GROUND DISTRIBUTION

Ground Distribution Wiring Diagram (1 of 3) for Lexus SC 430 2003

List of elements for Ground Distribution Wiring Diagram (1 of 3) for Lexus SC 430 2003:

• A/c control assembly
• A/c single pressure switch
• A11
• Acc relay
• Airbag sensor assembly
• Audio door control switch
• B10
• B11
• B20
• B21
• B22
• B27
• Brake actuator
• Brake fluid level warning switch
• C13
• C14
• C20
• Center j/b (behind right center of dash)
• Cigarette lighter
• Combi- nation switch
• Combination meter
• D10
• D16
• D17
• D18
• D19
• D20
• Data link connector
• Driver side j/b (left kick panel)
• Driver side j/b ecu
• E12
• E14
• E20
• Electronically controlled transmission pattern select switch
• F14
• F15
• F16
• F17
• F18
• Fuel lid opener switch
• Gateway ecu
• Glove box light switch
• Headlight beam level control ecu
• Ig (left side of steering column)
• Ig1 relay
• Ih (under steering column)
• Ii (left dash brace)
• Ij (right dash brace)
• Inner mirror
• J/c j11 (below radio)
• J/c j9 & j10 (top left end of dash)
• Left vanity light
• Luggage compartment door opener main switch
• Luggage compartment door opener switch
• Mirror retractor switch, head light cleaner switch & security indicator light
• Multi- display
• Passenger side j/b (right kick panel)
• Passenger side j/b ecu
• Personal light, garage door opener & telephone microphone
• Power outlet
• Radio & player
• Right vanity light
• Seat heater switch
• Shift lock control ecu
• Steering sensor
• Theft deterrent ecu
• Tilt & telescopic ecu
• Tire pressure monitor receiver
• Tire select switch
• Trans- ponder key computer
• Turn signal flasher relay
• Unlock warning switch & key interlock solenoid
• Vsc off switch

Ground Distribution Wiring Diagram (2 of 3) for Lexus SC 430 2003

List of elements for Ground Distribution Wiring Diagram (2 of 3) for Lexus SC 430 2003:

• (left side of engine compt) engine room no. 2 r/b
• (top center of engine)
• A/c dual pressure switch
• A/c magnetic clutch & lock sensor
• A14
• A16
• A22
• Brake actuator
• Combi- nation switch
• Controller blower motor
• Cooling fan ecu
• D31
• Data link connector
• Driver's side j/b (left kick panel)
• E19
• Ea (right front fender)
• Eb (side of right cylinder head)
• Ec (side of left cylinder head)
• Ed (left front fender
• Ee (left front fender)
• Efi relay
• Engine control module
• Engine hood courtesy switch
• Engine oil level sensor
• Engine room no. 1 r/b (right side of engine compt)
• Exhaust gas sensor
• Fan relay
• Front controller
• 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)
• If (left kick panel)
• Ig2 relay
• Ignition coil & igniter 1
• Ignition coil & igniter 2
• Ignition coil & igniter 3
• Ignition coil & igniter 4
• Ignition coil & igniter 5
• Ignition coil & igniter 6
• Ignition coil & igniter 7
• Ik (right kick panel)
• J/c j14 (right kick panel)
• J/c j3 (in engine room no.2 r/b)
• J/c j4 (in ecu box)
• J/c j7 (in ecu box)
• J/c j8 (behind left kick panel)
• J/c j9 & j10 (top left end of dash)
• Left front fog light
• Left front parking light
• Left front side marker light
• Left front turn signal light
• Left headlight (high)
• Left headlight (low)
• Park/neutral position switch, a/t indicator light switch & backup light switch
• Right front fog light
• Right front parking light
• Right front side marker light
• Right front turn signal light
• Right headlight (high)
• Right headlight (low)
• Skid control ecu
• Telephone computer
• Washer level sensor
• Washer motor

Ground Distribution Wiring Diagram (3 of 3) for Lexus SC 430 2003

List of elements for Ground Distribution Wiring Diagram (3 of 3) for Lexus SC 430 2003:

• (under
• A12
• A13
• A17
• Auto antenna control relay
• B19
• Bm (under front passenger's seat)
• Bn (left quarter panel)
• Bo (near stereo component amplifier)
• Bp (left quarter panel)
• Bq (right quarter panel)
• C10
• C11
• Driver door ecu
• Driver's seat)
• Fuel lid opener motor
• Fuel pump
• High mounted stop light
• J/c j16 (right rear of luggage compt)
• J/c j17 (left quarter panel)
• J/c j18 (right quarter panel)
• J/c j19 (under left side of driver's seat)
• J/c j20 (under right side of driver's seat)
• J/c j21 (under left side of front passenger's seat)
• J/c j22 (under right side of front passenger's seat)
• Left back-up light switch
• Left buckle switch
• Left rear combi- nation light
• Left rear side marker light
• Luggage room j/b (left rear corner of luggage compt)
• Luggage room j/b ecu
• Lumbar support control switch (driver's slide)
• Lumbar support control switch (front passenger's seat)
• Mayday switch
• Navi- gation ecu
• Passenger door ecu
• Power seat control switch (driver's seat)
• Power seat control switch (front passenger's seat)
• Power seat ecu (driver's seat)
• Power seat ecu (front passenger's seat)
• Power seat position sensor (driver's front vertical)
• Power seat position sensor (driver's lifter)
• Power seat position sensor (driver's reclining)
• Power seat position sensor (driver's slide)
• Power seat position sensor (front passenger's front vertical)
• Power seat position sensor (front passenger's lifter)
• Power seat position sensor (front passenger's reclining)
• Power seat position sensor (front passenger's slide
• Rear window defogger
• Right back-up light switch
• Right buckle switch & occupant detection sensor
• Right rear combi- nation light
• Right rear side marker light
• Seat heater controller (driver's seat)
• Seat heater controller (front passenger's seat)
• Sliding roof control ecu
• Stereo component amplifier
• Telephone computer
• Telephone micro- phone amplifier

HEADLIGHTS

Headlamps Wiring Diagram (1 of 2) for Lexus SC 430 2003

List of elements for Headlamps Wiring Diagram (1 of 2) for Lexus SC 430 2003:

• (behind left kick panel) driver side j/b
• Automatic light control sensor (behind upper right side of dash)
• Bu+
• Bu-
• Bubs
• C12
• C16
• Center j/b (behind right center of dash)
• Cltb
• Clte
• Clts
• Combination meter
• Combination switch
• Computer data lines system
• D-ig fuse 10a
• D10
• D20
• Driver side j/b (behind left kick panel)
• Driver side j/b ecu
• E14
• E16
• F11
• F15
• Fr fog fuse 15a
• Front fog ind
• Gateway ecu (behind right side of dash)
• Gnd
• Gnd2
• Head
• Head indicator (except canada)
• High beam indicator
• Hot at all times
• Hot in on or start
• Hrly
• Ig (left of steering column)
• Ig (left side of steering column)
• Ig+
• Ih (under steering column)
• Ii (on left dash brace)
• Instrument panel j/b (behind upper center of dash)
• Junction connector 13 (behind right side of dash)
• L24
• Luggage room j/b ecu (at left rear corner of luggage compartment)
• Mpd1
• Mpd2
• Mpi1
• Mpi2
• Mpl1
• Mpl2
• Mpx+
• Mpx+b
• Mpx-
• Mpx-b
• Mpx-b2 fuse 7.5a
• Mpx-b3 fuse 7.5a
• Mpx-ig
• Mpx-ig fuse 7.5a
• Mpx1
• Mpx2
• Parking brake switch (behind left side of dash)
• Passenger side j/b (behind right kick panel)
• Pkb
• Red
• Skid control ecu (behind left end of dash)
• Tail fuse 7.5a
• Tilt & telescopic ecu (behind left end of dash)
• Tx1

Headlamps Wiring Diagram (2 of 2) for Lexus SC 430 2003

List of elements for Headlamps Wiring Diagram (2 of 2) for Lexus SC 430 2003:

• (on left side of engine compartment. forward strut tower) engine room 2 r/b
• (on right side of engine compartment. behind strut tower) engine room 1 r/b
• Cra relay
• E10
• Ed (rear of left fender)
• Exterior lights system
• Ffog-rly
• Fhhi(1)
• Fhhi(2)
• Fmb3
• Fmig
• Front controller
• Front fog relay
• Gnd
• H-lp l lwr fuse 15a
• H-lp r lwr fuse 15a
• H-lp upr fuse 20a
• Head lp relay
• Hlhl
• Hlhr
• Hot at all times
• If (at left kick panel)
• Ik (at right kick panel)
• Junction connector 14
• Junction connector 3 (in engine room 2 r/b)
• Junction connector 8
• Left front fog light
• Left headlight (high)
• Left headlight c0ntrol ecu
• Main fuse 50a
• Mpx1
• Mpx2
• Passenger side j/b (behind right kick panel)
• Red
• Right front fog light
• Right headlight (high)
• Right headlight c0ntrol ecu
• Tail-rly

Headlamps Leveling Wiring Diagram for Lexus SC 430 2003

List of elements for Headlamps Leveling Wiring Diagram for Lexus SC 430 2003:

• Airbag
• Beam level indicator
• C17
• Combination meter
• Computer data lines system
• D-ig fuse 10a
• Driver side j/b (behind left kick panel)
• E16
• F15
• Flo
• Front height control sensor
• Gnd
• H-lp lvl fuse 5a
• Hdlv
• Headlight beam level control ecu (behind left end of dash)
• Hot at all times
• Hot in on or start
• Ig (left side of steering column)
• Ig+
• Ih (under steering column)
• Junction connector 1 (in engine room 2 r/b)
• Junction connector 13 (behind right side of dash)
• Left headlight beam level control actuator (at front of engine compartment, behind left headlight)
• Lh+
• Lh-
• Lh1
• Lh2
• Lh3
• Lh4
• Lhe
• Lhg
• Lht
• Mlcom
• Mpx+
• Mpx-
• Mpx-b2 fuse 7.5a
• Mpx1
• Mpx2
• Mrcom
• Passenger side j/b (behind right kick panel)
• Passenger side j/b ecu
• Pnk
• Rear height control sensor
• Red
• Rh+
• Rh-
• Rh1
• Rh2
• Rh3
• Rh4
• Rhe
• Rhg
• Rht
• Right headlight beam level control actuator (at front of engine compartment, behind right headlight)
• Sbf
• Sgf
• Shfl
• Shrl
• Skid control ecu (behind left end of dash)
• Sp1
• Spdl
• Wng

HORN

Horn Wiring Diagram for Lexus SC 430 2003

List of elements for Horn Wiring Diagram for Lexus SC 430 2003:

• Combination switch
• Computer data lines system
• Driver side j/b (behind left kick panel)
• Driver side j/b ecu (behind left kick panel)
• Ed (rear of left fender)
• Engine room 1 r/b (on right side of engine compt, behind strut tower)
• Engine room 2 r/b (on left side of engine compt, forward of strut tower)
• Front controller
• Gnd
• Horn fuse 10a
• Horn relay
• Horn rly
• Horn switch
• Hot at all times
• Junction connector 3 (in engine room 2 r/b)
• Left horn
• Mpx
• Mpx1
• Mpx2
• Mpx3
• Pnk
• Right horn
• Security fuse 7.5a

INSTRUMENT CLUSTER

Instrument Cluster Wiring Diagram for Lexus SC 430 2003

List of elements for Instrument Cluster Wiring Diagram for Lexus SC 430 2003:

• (behind left side of dash) data link connector (dlc) 3
• (canada)
• (left side of cylinder head) ec
• (under
• (usa)
• A/c fuse 5a
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• A17
• A18
• A19
• A20
• A21
• A22
• Abs ind
• Acc
• B10
• B13
• B16
• Beam level ind
• Brake fluid level warning switch (in brake fluid reservoir)
• Brake ind
• Buzzer
• C-gnd
• Center j/b (behind right center of dash)
• Charge ind
• Clock (a/c control assembly
• Combination meter
• Computer data lines system
• Cruise ind
• D-ig fuse 10a
• D-sig
• D11
• Driver side j/b (behind left kick panel)
• E10
• E11
• E14
• E16
• E17
• Ect pwr ind
• Engine control module (at left side of engine compartment, in ecu box)
• Engine control module (at left side of engine compt, in ecu box)
• Engine oil level sensor (on right front of engine)
• Etc snow ind
• Exterior lights system
• F11
• F15
• Front fog ind
• Fuel
• Fuel ind
• Fuel sender (main)
• Fuel sender (sub) (in fuel tank)
• Gnd
• Head ind
• High beam ind
• Hot at all times
• Hot in on or acc
• Hot in on or start
• Ih (under steering column)
• Ii (on left side dash brace)
• Instrument panel j/b (behind upper center of dash)
• Interior lights system
• J/c 13 (behind right side of dash)
• Junction connector 7 (in ecu box)
• Lbl
• Left turn ind
• Magnetic field sensor (w/o navigation system) (beneath top center of dash)
• Malfunction ind lamp
• Mol
• Mops
• Mpx-b2 fuse 7.5
• Mpx1
• Mpx2
• Multi-display
• Navigation ecu (at right rear corner of luggage compt)
• Nca
• Odometer/ tripmeter
• Oil level ind
• Oil pressure ind
• Oil pressure switch (on left front side of engine)
• Open door ind
• Parking brake switch (behind left side of dash)
• Passenger side j/b (behind right kick panel)
• Pkb
• Pnk
• Radio 2 fuse 10a
• Rear lights ind
• Red
• Right turn ind
• S23
• Seat belt ind
• Skid control ecu (behind left end of dash)
• Slip ind
• Sp1
• Spd
• Speedometer
• Srs ind
• Steering column) ih
• Stereo component amplifier (at right rear corner of luggage compt)
• Tac
• Tach
• Tachometer
• Tail ind
• Tire pressure ind
• Trip switch
• Vmid
• Vsc ind
• Vsc off ind
• W/ navigation system
• Warning system
• Washer ind
• Water temperature

INTERIOR LIGHTS

Courtesy Lamps Wiring Diagram (1 of 2) for Lexus SC 430 2003

List of elements for Courtesy Lamps Wiring Diagram (1 of 2) for Lexus SC 430 2003:

• A/c control assembly (behind center of dash)
• A10
• Air bag
• Bq (at right quarterpanel)
• C10
• Center j/b (behind right center of dash)
• D19
• D20
• Data
• Dbil
• Dome fuse 7.5a
• Door
• Driver side j/b (behind left kick panel)
• Drivers side j/b ecu
• E10
• E13
• E16
• Engine control module (at left side of engine compt, in ecu box)
• Engine room 2 r/b (on left side of engine compartment, forward of strut tower)
• Front controller
• Fspt
• Gateway ecu (behind right side of dash)
• Gnd
• Gnd1
• Hot at all times
• I/p junction block (behind upper center of dash)
• Ig (left side of steering column)
• Ignition key cylinder light
• Ih (under steering column)
• Ile
• J/c 13 (behind right side of dash)
• J/c 18
• J/c 9 & 10 (behind top left end of dash)
• J10
• Left foot light
• Left vanity light
• Map
• Mpd1
• Mpd2
• Mpi1
• Mpi2
• Mpl1
• Mpl2
• Mpx
• Mpx+
• Mpx-
• Mpx-b
• Mpx-b2 fuse 7.5a
• Mpx-b3 fuse 7.5a
• Mpx1
• Mpx2
• Passenger side j/b (behind right kick panel)
• Passenger side j/b ecu
• Pbil
• Personal light
• Rco
• Rda
• Red
• Right buckle switch (in right front seat belt buckle)
• Right foot light
• Right scuff plate light
• Right vanity light
• Rssi
• Theft deterrent ecu (behind left end of dash)
• Tire pressure monitor receiver (behind center of dash, below radio)
• Transponder key computer (left side of dash, behind gauge assembly)
• Wireless door lock control receiver (on center of roof header)

Courtesy Lamps Wiring Diagram (2 of 2) for Lexus SC 430 2003

List of elements for Courtesy Lamps Wiring Diagram (2 of 2) for Lexus SC 430 2003:

• (in left front seat belt buckle) left buckle switch
• (under driver's seat)
• Air bag sensor assembly (at center of dash, below radio)
• Bdr
• Bl (under driver's seat)
• Bp (at left quarterpanel)
• Bq (at right quarterpanel)
• Combination meter
• Combination switch
• Cty
• Ctyb
• Cyl
• D-door fuse 25a
• D-ig fuse 10a
• Door ind
• Driver door ecu (in driver's door)
• Driver side j/b (behind left kick panel)
• Engine room 1 r/b (on right side of engine compartment, behind strut tower)
• F12
• F13
• F15
• F18
• Gnd
• Gnd d19
• Hot at all times
• Hot in on or start
• Ig+
• Ih (under steering column)
• J/c 13 (behind right side of dash)
• J/c 17
• J/c 18
• J/c 20
• L22
• L24
• Left door courtesy light
• Left door courtesy switch
• Left luggage compartment light
• Left scuff plate light
• Lgcy
• Luggage room j/b (at left rear corner of luggage compartment)
• Luggage room j/b ecu
• Mpx+
• Mpx+b
• Mpx-
• Mpx-b
• Mpx1
• Mpx2
• Mpx2 d17
• P-door fuse 25a
• P-gnd
• P11
• Passenger door ecu (in right door)
• Passenger side j/b (behind right kick panel)
• Pnk
• Power seat ecu (driver's seat)
• Power seat ecu (front passenger's seat) (under front passenger's seat)
• Red
• Right door courtesy light
• Right door courtesy switch
• Right luggage compartment light
• Skid control ecu (behind left end of dash)
• Sliding roof control ecu (in left rear of luggage compt)
• Tilt & telescopic ecu (behind left end of dash)

Instrument Illumination Wiring Diagram (1 of 2) for Lexus SC 430 2003

List of elements for Instrument Illumination Wiring Diagram (1 of 2) for Lexus SC 430 2003:

• A/c control assembly (behind center of dash)
• A/t shift lever illumination
• A10
• Audio door control switch
• B j9
• B19
• Bu+
• Bu-
• Center j/b (behind right center of dash)
• Cigarette lighter
• Combination switch
• D j10
• D10
• D18
• D20
• Driver side j/b (behind left kick panel)
• Driver side j/b ecu
• E10
• E15
• Electronically controlled transmission pattern select switch
• Engine control module (at left side of engine compt, in ecu box)
• Engine room 2 r/b (on left side of engine compartment, forward of strut)
• F10
• F11
• Front controller
• Gateway ecu (behind right side of dash)
• Gnd
• Gnd2
• Hot at all times
• Hot in on or start
• I/p junction block
• Ig (left side of steering column)
• Ih (under steering column)
• Ii (on left side dash brace)
• J/c 13 (behind right side of dash)
• J/c 9 & 10 (behind top left end of dash)
• Mpd1
• Mpd2
• Mpi1
• Mpi2
• Mpl1
• Mpl2
• Mpx+ a10
• Mpx- a9
• Mpx-b3 fuse 7.5a
• Mpx-ig fuse 7.5a
• Mpx1
• Mpx2
• Multi- display (w/ navi- gation)
• Panel fuse 5a
• Panel1
• Panel2
• Passenger side j/b (behind right kick panel)
• Pnk
• Radio & player
• Red
• Remote control mirror switch
• Rheostat
• Seat heater switch (if equipped)
• Sw1
• Sw2
• Sw3
• Tilt & telescopic ecu (behind left end of dash)
• Tire pressure monitor receiver (behind center of dash, below radio)
• Tr+
• Tr1
• Tr2
• Tr3
• Transponder key computer (left side of dash, behind gauge assembly)
• Tx1
• Vsc off switch

Instrument Illumination Wiring Diagram (2 of 2) for Lexus SC 430 2003

List of elements for Instrument Illumination Wiring Diagram (2 of 2) for Lexus SC 430 2003:

• Air bag
• Air bag sensor assembly (at center of dash, below radio)
• Bdr
• Bl (under driver's seat)
• Bp (at left quarterpanel)
• Bq (at right quarterpanel)
• Bubs
• Combination meter
• D-door fuse 25a
• D-ig fuse 10a
• Dle
• Driver door ecu (in driver's door)
• Driver side j/b (behind left kick panel)
• E14
• E16
• Engine room 1 r/b (on right side of engine compartment, behind strut tower)
• F13
• F15
• F18
• Glove box light
• Glove box light switch
• Gnd
• Gnd d19
• Hot at all times
• Hot in on or start
• Ig (left side of steering column)
• Ig+
• Ih (under steering column)
• J/c 13 (behind right side of dash)
• J/c 17
• J/c 18
• L24
• Luggage room j/b (at left rear corner of luggage compartment)
• Luggage room j/b ecu
• Mpx
• Mpx+
• Mpx+b
• Mpx-
• Mpx-b2 fuse 7.5a
• Mpx1
• Mpx1 d17
• Mpx2
• P-door fuse 25a
• P-gnd
• P11
• Passenger door ecu (in right door)
• Passenger side j/b (behind right kick panel)
• Passenger side j/b ecu
• Pnk
• Power seat ecu (driver's seat) (under driver's seat)
• Power seat ecu (front passenger's seat) (under passenger's seat)
• Power window master switch
• Pwe
• Pws
• Red
• Right door lock control switch
• Right power window control switch
• Skid control ecu (behind left end of dash)
• Sliding roof control ecu (in left rear of luggage compt)
• Theft deterrent ecu (behind left end of dash)
• Wls1

MEMORY SYSTEMS

Memory Systems Wiring Diagram (1 of 3) for Lexus SC 430 2003

List of elements for Memory Systems Wiring Diagram (1 of 3) for Lexus SC 430 2003:

• (if equipped) mirror retractor switch
• Bdr
• Bl (under driver's seat)
• Computer data lines system
• Cpub
• D-door fuse 25a
• D-ig fuse 10a
• D17
• D18
• D19
• De2
• Defogger system
• Dm+r
• Dmhr
• Dmvr
• Driver door ecu (in driver's door)
• Driver side j/b (behind left kick panel)
• Driver side j/b ecu
• Driving position memory switch (driver's seat)
• Dvc
• Engine control module (at left side of engine compt, in ecu box)
• Engine room 1 r/b (on right side of engine compt, behind strut tower)
• F11
• Gnd
• Hot at all times
• Hot in on or start
• Hssr
• I15
• I17
• I19
• I22
• Ii (on left side dash brace)
• Ill+
• Ill-
• Instrument panel j/b (behind upper center of dash)
• Interior lights system
• J/c 13 (behind right side of dash)
• J/c 18
• J/c 4 & 5 (in ecu box)
• J5 b
• Left remote control mirror
• Lt/rt m
• Luggage room j/b (at left rear corner of luggage compt)
• Mpx-b
• Mpx-b1 fuse 7.5a
• Mpx-b3 fuse 7.5a
• Mpx-ig
• Mpx-ig fuse 7.5a
• Mpx1
• Mpx2
• Mr+
• Mr-
• Mry
• Msw
• Mswe
• P-door fuse 25a
• P11
• Park/neutral position switch (on transmission)
• Passenger door ecu (in right door)
• Passenger side j/b (behind right kick panel)
• Pe2
• Pm+r
• Pmhr
• Pmvr
• Pnk
• Pvc
• R/e
• Red
• Remote control mirror switch
• Ret
• Retrac m
• Right remote control mirror
• Sensor
• Sig
• Up/dn m
• Vssr
• W/ mirror retractor

Memory Systems Wiring Diagram (2 of 3) for Lexus SC 430 2003

List of elements for Memory Systems Wiring Diagram (2 of 3) for Lexus SC 430 2003:

• Bl (under driver's seat)
• Center j/b (behind right center of dash)
• Computer data lines system
• D p/seat fuse 30a
• Driver side j/b (behind left kick panel)
• Driver's lumbar support control switch
• Driver's power seat control switch
• Driver's power seat ecu (under driver's seat)
• Driver's seat front vertical control sensor
• Driver's seat front vertical motor
• Driver's seat lifter control sensor
• Driver's seat lifter motor
• Driver's seat lumbar support control motor
• Driver's seat reclining control sensor
• Driver's seat reclining motor
• Driver's seat slide control sensor
• Driver's seat slide motor
• Ecub
• Ecue
• Fdwn
• Frv+
• Frv-
• Fup
• G10
• Gnd
• Hot at all times
• Ih (under steering column)
• Ii (on left side dash brace)
• J/c 19
• J/c 20
• J10
• Ksw
• Ldwn
• Lft+
• Lft-
• Lup
• Mpx1
• Mpx2
• P21
• P22
• Pvcc
• Rcl+
• Rcl-
• Rclf
• Rclr
• Red
• Sgnd
• Sld+
• Sld-
• Sldf
• Sldr
• Ssfv
• Ssrr
• Ssrs
• Ssrv
• Sysb
• Tem+
• Tem-
• Ti & te fuse 15a
• Tilt & telescopic ecu (behind left end of dash)
• Tim+
• Tim-
• Transponder key computer (left side of dash, behind gauge assembly)
• Unlock warning switch (behind left side of dash)

Memory Systems Wiring Diagram (3 of 3) for Lexus SC 430 2003

List of elements for Memory Systems Wiring Diagram (3 of 3) for Lexus SC 430 2003:

• Bm (under passenger's seat)
• Computer data lines system
• Fdwn
• Frv+
• Frv-
• Fup
• Gnd
• Hot at all times
• J/c 21
• J/c 22
• Ldwn
• Lft+
• Lft-
• Lup
• Mpx1
• Mpx2
• P p/seat fuse 30a
• P23
• P24
• Passenger side j/b (behind right kick panel)
• Passenger's lumbar support conrol switch
• Passenger's power seat control switch
• Passenger's power seat ecu (under passenger's seat)
• Passenger's seat front vertical control sensor
• Passenger's seat front vertical motor
• Passenger's seat lifter control sensor
• Passenger's seat lifter motor
• Passenger's seat lumbar support control motor
• Passenger's seat reclining control sensor
• Passenger's seat reclining motor
• Passenger's seat slide control sensor
• Passenger's seat slide motor
• Pvcc
• Rcl+
• Rcl-
• Rclf
• Rclr
• Red
• Sgnd
• Sld+
• Sld-
• Sldf
• Sldr
• Ssfv
• Ssrr
• Ssrs
• Ssrv
• Sysb

NAVIGATION

Navigation Wiring Diagram for Lexus SC 430 2003

List of elements for Navigation Wiring Diagram for Lexus SC 430 2003:

• (behind left side of dash) data link connector (dlc) 3
• (in body harness, near breakout to rear woofer)
• (on left side of engine compartment, forward of strut tower)
• +b1
• Acc
• Air conditioning system
• Atx+
• Atx-
• Aui+
• Aui-
• Auo+
• Auo-
• B13
• B18
• Bo (near stereo component amplifier)
• Bq (at right quarterpanel)
• Center j/b (behind right center of dash)
• Computer data lines system
• D11
• D18
• D20
• Driver side j/b (behind left kick panel)
• E10
• E11
• E16
• E17
• Engine room 1 r/b (on right side of engine compt, behind strut tower)
• Engine room 2
• G10
• Gnd
• Gnd1
• Hot at all times
• Hot in on or acc
• Hot in on or start
• Hot in start
• Ig (left side of steering column)
• Ih (under steering column)
• Instrument cluster system
• Instrument panel j/b (behind upper center of dash)
• J/c 12 (behind right side of dash)
• J/c 15
• J/c 18
• J/c 9 & 10 (behind top left end of dash)
• J10
• Left door speaker (squawker & tweeter)
• Mtx+
• Mtx-
• Multi-display
• Mut2
• N-mu
• Nav+
• Nav-
• Navi
• Navigation amplifier (at right rear corner of luggage compartment)
• Navigation ecu (at right rear corner of luggage compt)
• Navo
• Nca
• Opn
• P-ig fuse 10a
• Parking brake switch (behind left side of dash)
• Passenger side j/b (behind right kick panel)
• Passenger side j/b ecu
• Pkb
• Pnk
• R/b
• Radio & player
• Radio 1 fuse 30a
• Radio 2 fuse 10a
• Re1
• Re2
• Red
• Red/
• Rev
• S23
• Sp+
• Sp-
• Spd
• St1
• Starter fuse 7.5a
• Stereo component amplifier (at right rear corner of luggage compt)
• Sync
• Tdx+
• Tdx-
• Tfl+
• Tfl-
• Tilt
• Tv fuse 5a
• Tx+
• Tx-
• Txs+
• Txs-

PASSIVE RESTRAINTS

Passive Restraints Wiring Diagram for Lexus SC 430 2003

List of elements for Passive Restraints Wiring Diagram for Lexus SC 430 2003:

• A21
• A22
• Air bag
• Air bag sensor assembly (at center of dash, below radio)
• Bkll
• Bklr
• Bl (under driver's seat)
• Bq (at right quarterpanel)
• D-ig fuse 10a
• Dbkl
• Driver side j/b (behind left kick panel)
• Driver side j/b ecu (behind left kick panel)
• E11
• Hot in on or start
• J/c 18
• J/c 20
• Left buckle switch (in left front seat belt buckle)
• Left tension reducer solenoid (at base of left "b" pillar)
• Mpx2
• Passenger side j/b (behind right kick panel)
• Passenger side j/b ecu
• Rbe+
• Right buckle switch (in left front seat belt buckle)
• Right tension reducer solenoid (base of right "b" pillar)

POWER ANTENNA

Power Antenna Wiring Diagram for Lexus SC 430 2003

List of elements for Power Antenna Wiring Diagram for Lexus SC 430 2003:

• (on right side of engine compt, behind strut tower)
• Anta
• Auto antenna control relay & motor (at right side of luggage compt)
• Bq (at right quarterpanel)
• Center j/b (behind right center of dash)
• E13
• E17
• Engine room 1 r/b
• Hot at all times
• Hot in acc or on
• Hot in on or start
• Instrument panel j/b (behind upper center of dash)
• J/c 12 (behind right side of dash)
• J/c 15
• J/c 18
• J/c 9 (behind top left end of dash)
• P-ig fuse 10a
• Passenger side j/b (behind right kick panel)
• R1 antb
• R3 ant
• Radio & player
• Radio 1 fuse 30a
• Radio 2 fuse 10a

POWER DISTRIBUTION

Power Distribution Wiring Diagram (1 of 3) for Lexus SC 430 2003

List of elements for Power Distribution Wiring Diagram (1 of 3) for Lexus SC 430 2003:

• Abs 1 fuse 60a
• Abs 2 fuse 40a
• Accy
• Air conditioning system
• Alt fuse 120a
• Alt-s fuse 5a
• Am1 fuse 5a
• Am2 fuse 30a
• Anti-lock brake system
• Battery
• C13
• Cooling fan system
• Cruise control, engine, transmission systems
• Cruise control, transmission, engine anti-theft, anti-lock brakes systems
• D-door fuse 25a
• D/c cut fuse 15a
• Driver side j/b (behind left kick panel)
• E17
• Ecu box)
• Efi 2 fuse 10a
• Efi fuse 25a
• Efi relay
• Engine control module (left side of engine compt, in e
• Engine room no.1 r/b (on right side of engine compt, behind strut tower)
• Engine room no.2 r/b (on left side of engine compt, behind strut tower)
• Engine system
• Etcs fuse 15a
• Exterior lights, door locks, anti-theft, body computer systems
• Fan 2 fuse 40a
• Fan fuse 40a
• From ignition switch b (diagram 1 of 3)
• H-lp l lwr fuse 15a
• H-lp r lwr fuse 15a
• H-lp upr fuse 20a
• Headlamp relay
• Headlight body computer systems
• Heater fuse 50a
• Horn fuse 10a
• Horn, computer data line, door locks, anti-theft systems
• Ig2 fuse 7.5a
• Ig2 main fuse 20a
• Ig2 relay
• Ign fuse 5a
• Ignition switch
• Inj fuse 10a
• Interior light, defogger, computer data line, power window, power mirror power tops, door locks, anti-theft systems
• J/c 2
• Main fuse 50a
• Off
• P-door fuse 25a
• Passenger side j/b (behind right kick panel)
• Radio 1 fuse 30a
• Red
• Short pin 1
• Short pin 2
• Sound system
• Start
• Starter fuse 5a
• Starter relay
• Starting, engine systems
• Starting/ charging system
• Tel fuse 5a
• Telephone computer
• To driver side j/b (diagram 3 of 3)
• To engine room no 2 r/b (diagram 1 of 1)
• To passenger side j/b (diagram 2 of 3)
• To rr j/b fuse (diagram 2 of 3)
• To tail fuse (diagram 3 of 3)
• Transmission, engine, starting/ chaging, navigation systems
• Turn-haz fuse 15a

Power Distribution Wiring Diagram (2 of 3) for Lexus SC 430 2003

List of elements for Power Distribution Wiring Diagram (2 of 3) for Lexus SC 430 2003:

• A/c fuse 5a
• Acc relay
• Accy
• Air conditioning, instrument cluster systems
• Air conditioning, starting/charging, instrument cluster, headlight, engine, interior lights, body computer, srs, power tops, exterior lights, anti-lock brakes, wiper/washer, sound, cruise control systems
• Body computer exterior lights systems
• Body computer, sound, defogger, anti-theft, door lock systems
• C10
• C12
• C17
• Cig fuse 15a
• Cigarette lighter
• D5 not used
• Defog fuse 30a
• Defog relay
• Defogger system
• Dome fuse 7.5a
• E13
• E17
• Engine room no.1 r/b (on right side of engine compt, behind strut tower)
• Engine, mirror, seats, power windows, power tops, door locks, anti-theft, body computer systems
• F11
• From driver side j/b (diagram 3 of 3)
• From engine room f no 1 r/b (diagram 1 of 1)
• From engine room no.1 r/b (diagram 1 of 3)
• From ignition switch (diagram 1 of 3)
• Fuel opn fuse 10a
• Gnd
• H-lp cln fuse 30a
• H-lp lvl fuse 5a
• Headlight cleaner motor
• Headlights system
• Headlights, exterior lights, wiper/washer, body computer systems
• Headlights, interior lights, body computer, mirrors, exterior lights, wiper/washer trunk,tailgate, fuel doors systems
• I10
• I19
• I21
• Ig (left side of steering column)
• Ig1 relay
• Ii (left instrument panel brace)
• Jc/11 (below center of dash, below radio)
• Lce-lp fuse 7.5a
• Lgg lh fuse 20a
• Lgg rh fuse 20a
• Luggage room j/b (at left rear corner of luggage compt)
• Luggage room j/b ecu
• Mpx-b1 fuse 7.5a
• Mpx-b2 fuse 7.5a
• Mpx-b3 fuse 7.5a
• Navigation system
• Not used
• P p/seat fuse 30a
• P-ig fuse 10a
• P-tray fuse 20a
• Passenger side j/b (behind right kick panel)
• Passenger side j/b ecu
• Pnk
• Power tops system
• Radio 2 fuse 10a
• Red
• Roof lh fuse 20a
• Roof rh fuse 20a
• Rr j/b fuse 50a
• Seat htr fuse 20a
• Seats system
• Sound system, navigation, seats, shift interlock, mirrors systems
• Systems
• To driver side j/b (diagram 3 of 3)
• Tv fuse 5a
• Washer fuse 20a
• Wiper/washer, body control module
• Wiper/washer, interior lights, body computer, mirrors, power antenna, sound, cellular phone, anti-theft, power window, rea defogger systems

Power Distribution Wiring Diagram (3 of 3) for Lexus SC 430 2003

List of elements for Power Distribution Wiring Diagram (3 of 3) for Lexus SC 430 2003:

• Abs-ig fuse 7.5a
• Acc relay
• Accy
• Air conditioning system
• Air conditioning, cooling fans, body computer systems
• Air conditioning, headlights, interior lights, power mirrors, body computer, memory, power tops, exterior lights, anti-theft, door locks, wipep/washer, power windows systems
• Air conditioning, starting/charging, instrument cluster cruise control, transmission, engine, headlights, interior lights, warnings, navigation, memory, sound, power tops, srs, exterior lights anti-lock brakes, wiper/washer systems
• Anti-lock brakes system
• Body computer system
• Body computer, power window, door locks, power window, anti-theft systems
• Body computer, wiper/washer systems
• C11
• C16
• Cruise control, engine, transmission, body computer systems
• Cruise control, transmission, engine, srs, anti-lock brakes systems
• D p/seat fuse 30a
• D-ig fuse 10a
• Driver side j/b (behind left kick panel)
• E10
• E11
• Exterior lights, starting/charging, cruise control, headlights, power mirrors, power tops system
• F11
• F12
• F15
• F16
• F17
• Fr fog fuse 15a
• From fuse am1 (diagram 1 of 1)
• From ignition switch (diagram 1 of 3)
• From passenger side j/b (diagram 2 of 3
• G10
• Gnd
• Headlight, exterior lights, door lock, anti-theft, body control systems
• Headlights, body computer systems
• Heater fuse 10a
• Horn, body computer systems
• I15
• I16
• I17
• Ig1 relay
• Ii (left instrument panel brace)
• J10
• Memory systems
• Memory, seats systems
• Mpx-ig
• Mpx-ig fuse 7.5a
• Not used
• Obd fuse 7.5a
• Panel fuse 5a
• Panel1
• Pnk
• Power outlet
• Power window, power tops, power mirror, defogger, body computer, anti-theft, door locks system
• Pwr outlet fuse 15a
• Red
• Security fuse 7.5a
• Stop fuse 5a
• Tail fuse 7.5a
• Ti-te fuse 15a
• To passenger side j/b (diagram 2 of 3)
• Wiper fuse 30a
• Wiper/washer system system

POWER MIRRORS

Electrochromic Mirror Wiring Diagram for Lexus SC 430 2003

List of elements for Electrochromic Mirror Wiring Diagram for Lexus SC 430 2003:

• Center j/b (behind right center of dash)
• D19
• D20
• Door locks system
• Driver door ecu (in driver's door)
• Ec mirror
• Ec+
• Ec-
• Eci+
• Eci-
• F14
• F16
• Gnd
• Hot in on or start
• I12
• Ig (left side of steering column)
• Ih (under steering column)
• Inner mirror
• J10
• Junction connector 9 & 10 (behind top left end of dash)
• Left remote control mirror
• P-ig fuse 10a
• P11
• Passenger door ecu (in right door)
• Passenger side j/b (behind right kick panel)
• Red
• Right remote control mirror

POWER SEATS

Heated Seats Wiring Diagram for Lexus SC 430 2003

List of elements for Heated Seats Wiring Diagram for Lexus SC 430 2003:

• B14
• Bl (under driver's seat)
• Bm (under passenger's seat)
• Center j/b (behind right center of dash)
• D20
• Driver's seat heater controller (under driver's seat)
• Front passenger's seat heater controller (under front passenger's seat)
• Hot at all times
• Hot in on or start
• Ig (left side of steering column)
• Ih (under steering column)
• Ill
• Interior lights system
• J/c 20
• J/c 21
• P p/seat fuse 30a
• P-ig fuse 10a
• Passenger side j/b (behind right kick panel)
• Rvl
• Rvr
• Seat heater switch
• Seat htr fuse 20a
• Swl
• Swr
• Thl
• Thr

POWER TOP/SUNROOF

Retractable Hardtop Provision Wiring Diagram (1 of 2) for Lexus SC 430 2003

List of elements for Retractable Hardtop Provision Wiring Diagram (1 of 2) for Lexus SC 430 2003:

• Blgl
• Blgr
• Bp (at left quarterpanel) j/c 17
• Bpt
• Brfl
• Brfr
• C10 red
• Cls
• Computer data lines system
• Cpub
• Hot at all times
• L22
• L24
• Lct
• Lcte
• Lcty
• Left quarter power window motor
• Lfl+
• Lfl-
• Lfr+
• Lfr-
• Lgg lh fuse 20a
• Lgg rh fuse 20a
• Limit switch (left luggage front lock) (at left rear side of luggage compt)
• Limit switch (package tray 1)
• Limit switch (roof close, left) (at left side of roof)
• Limit switch (roof close, right) (at right side of roof)
• Limit switch (roof lock) (at left side of roof)
• Limit switch (roof position 1 & 2)
• Limit switch (tonneau cover)
• Lll
• Llle
• Lml+
• Lml-
• Lpl
• Lplb
• Lple
• Luggage compartment door closer motor (left) (at left side of luggage compt)
• Luggage compartment door closer motor (right) (at right side of luggage compt)
• Luggage compt door detection switch
• Luggage room j/b (at left rear corner of luggage compt)
• Luggage room j/b ecu (at left rear corner of luggage compt)
• Mpx+
• Mpx-
• Open
• P-tray fuse 20a
• Package tray motor (below center of package tray)
• Pnk
• Ptm+
• Ptm-
• Ptp1
• Ptp2
• Ptpe
• Qwl+
• Qwl-
• Rcl
• Rcle
• Rcr
• Rcre
• Red
• Rhl
• Rhle
• Rll
• Rlle
• Rlm+
• Rlm-
• Rml+
• Rml-
• Roof lh fuse 20a
• Roof lock motor (at front of roof)
• Roof rh fuse 20a
• Rpl
• Rplb
• Rple
• S17
• S19
• S21
• Sliding roof control ecu (in left rear of luggage compt)
• Swe
• Tcs
• Tcse

Retractable Hardtop Provision Wiring Diagram (2 of 2) for Lexus SC 430 2003

List of elements for Retractable Hardtop Provision Wiring Diagram (2 of 2) for Lexus SC 430 2003:

• (at right rear side of luggage compt) (right luggage front lock) limit switch
• (package tray 2) limit switch
• (right rear of luggage compt) (luggage compartment door open & close) limit switch
• (roof open) limit switch
• (roof position 3) limit switch
• A/c control assembly (behind center of dash)
• A10
• B2 (in body harness, near roof position limit switch 3)
• Bm (under passengers seat)
• Bq (at right quarterpanel)
• Cls
• Computer data lines system
• Driver side j/b (behind left kick panel)
• Gnd
• Hot at all times
• Hot in on or start
• I20
• Ign
• Ih (under steering column)
• Instrument panel j/b (behind (upper center of dash)
• J/c 13 (behind right side of dash)
• J/c 18
• Lcr
• Lcre
• Left luggage compartment door drive motor (at left side of luggage compt)
• Left roof drive motor (below left "c" pillar)
• Llr
• Llre
• Lmr+
• Lmr-
• Lor
• Lpr
• Lprb
• Lpre
• Mpx+
• Mpx-
• Mpx-b1 fuse 7.5a
• Mpx-ig fuse 7.5a
• Mpx1
• Mpx2
• Open
• Passenger side j/b (behind right kick panel)
• Pnk
• Qwr+
• Qwr-
• Red
• Rhr1
• Rhr2
• Rhre
• Right luggage compartment door drive motor (at right side of luggage compt)
• Right quarter power window motor
• Right roof drive motor (below right "c" pillar)
• Rmr+
• Rmr-
• Ror
• Rore
• Rpr
• Rprb
• Rpre
• S18
• S20
• Sgnd
• Sig
• Sliding roof control ecu (in left rear of luggage compt)
• Swe

POWER WINDOWS

Power Windows Wiring Diagram for Lexus SC 430 2003

List of elements for Power Windows Wiring Diagram for Lexus SC 430 2003:

• (behind left kick panel) driver side j/b
• (behind upper center of dash) instrument panel j/b
• (under steering column)
• +b1
• +b2
• Acc
• Auto
• Bdr
• Bl (under driver's seat)
• Bq (at right quarter- panel)
• Bzr
• Bzr2
• Center j/b (behind right center of dash)
• Computer data lines system
• Cpse
• Cpub
• Cty
• D-door fuse 25a
• D17
• D18
• D19
• Data
• Ddn
• Dn auto
• Dn man
• Driver door ecu (in driver's door)
• Dt1
• Dup
• E17
• E18
• Engine room 1 r/b (on right side of engine compt, behind strut tower)
• F11
• F17
• Gnd
• Hot at all times
• Hot in on or acc
• Hot in on or start
• I15
• I21
• J/c 18
• J/c 9, j/c 10 (behind top left end of dash)
• J10
• J9 f
• Junction connector 13 (behind right side of dash)
• Kul
• Left door courtesy switch
• Left door key lock & unlock switch
• Left power window motor
• Lmt
• Luggage room j/b (at left rear corner of luggage compartment)
• Mdn
• Mpx
• Mpx-b1 fuse 7.5a
• Mpx-ig fuse 7.5a
• Mpx1
• Mpx2
• Mul
• Mup
• P-door fuse 25a
• P11
• Passenger door ecu (in right door)
• Passenger side j/b (behind right kick panel)
• Pct
• Pls
• Power window master switch
• Pwe
• Pws
• Radio 2 fuse 10a
• Rco
• Rda
• Red
• Right door courtesy switch
• Right power window control switch
• Right power window motor
• Rssi
• Sc1
• Sc2
• Sc3
• Security fuse 7.5a
• Sgnd
• Sig
• Theft deterrent ecu (behind left end of dash)
• Up auto
• Up man
• W/l
• Wireless door lock buzzer
• Wireless door lock control receiver (on center of roof header)
• Wls1
• Wlsw

RADIO

Radio Wiring Diagram (1 of 2) for Lexus SC 430 2003

List of elements for Radio Wiring Diagram (1 of 2) for Lexus SC 430 2003:

• (under steering column) ih
• Acc
• Atx+
• Atx-
• Audio door control switch
• Auo+
• Auo-
• B13
• Center j/b (behind right center of dash)
• Combination meter
• D-ig fuse 10a
• D20
• Dome fuse 7.5a
• Dos1
• Driver side j/b (behind left kick panel)
• E10
• E13
• E16
• E17
• Engine room 1 r/b (on right side of engine compt, behind strut tower)
• F14
• F15
• Gateway ecu (behind right side of dash)
• Gnd
• Gtx+
• Gtx-
• Hot at all times
• Hot in acc or on
• Hot in on or start
• Ig (left side of steering column)
• Ig+
• Ih (under steering column)
• Ij (on right side dash brace)
• Ill
• Instrument panel j/b (behind upper center of dash)
• Interior lights system
• J/c 12 (behind right side of dash)
• J/c 13 (behind right side of dash)
• J/c 9 & 10 (behind top left end of dash)
• J10
• Mpx+b
• Mpx-b2 fuse 7.5a
• Multi display
• Mut2
• Mute
• Navigation ecu (if equipped) (at right rear corner of luggage compartment)
• Nca
• Passenger side j/b (behind right kick panel)
• Pnk
• Radio & player
• Radio 1 fuse 30a
• Radio 2 fuse 10a
• Red
• Sgnd
• Tx+
• Tx-
• Txs+
• Txs-
• W/ navigation

Radio Wiring Diagram (2 of 2) for Lexus SC 430 2003

List of elements for Radio Wiring Diagram (2 of 2) for Lexus SC 430 2003:

• Acc
• Aui+
• Aui-
• Bo (near stereo component amplifier)
• Fl+
• Fl-
• Fr+
• Fr-
• Gnd
• J/c 15
• Left door speaker (squawker & tweeter)
• Left front woofer
• Left rear speaker
• Mtx+
• Mtx-
• Mute
• N-mu
• Nav+
• Nav-
• Navi
• Navigation amplifier (at right rear corner of luggage compartment)
• Navo
• Pnk
• Rear woofer
• Red
• Right door speaker (squawker & tweeter)
• Right front woofer
• Right rear speaker
• Rl+
• Rl-
• Rr+
• Rr-
• S13
• S14
• S22
• S23
• Short connector s13 & s14 (at rear center of luggage compartment)
• Sp+
• Sp-
• Spd
• Spi+
• Spi-
• Stereo component amplifier (at right rear corner of luggage compt)
• T16
• T18
• T19
• Tdx+
• Tdx-
• Telephone computer (center rear of luggage compt)
• Tfl+
• Tfl-
• Tfr+
• Tfr-
• Tmut
• W/ cellular phone
• W/ navigation
• W/ navigation system
• W/o cellular phone
• W/o navigation
• W/o navigation system
• Wf+
• Wf-

SHIFT INTERLOCK

Shift Interlock Wiring Diagram for Lexus SC 430 2003

List of elements for Shift Interlock Wiring Diagram for Lexus SC 430 2003:

• (behind left side of dash) unlock warning switch & key interlock solenoid
• Acc
• B10
• Center j/b (behind right center of dash)
• D16
• D20
• Driver side j/b (behind left kick panel)
• Driver side j/b ecu (behind left kick panel)
• E17
• F10
• Hot at all times
• Hot in acc or on
• Hot in on or start
• Ig (left side of steering column)
• Ih (under steering column)
• Instrument panel j/b (behind upper center of dash)
• Kls+
• P-ig fuse 10a
• Passenger side j/b (behind right kick panel)
• Radio 2 fuse 10a
• Shift lock control ecu (under center console, near selector lever)
• Stop fuse 5a
• Stoplight switch (on top of brake pedal bracket)
• Stp
• Stpi

STARTING/CHARGING

Charging Wiring Diagram for Lexus SC 430 2003

List of elements for Charging Wiring Diagram for Lexus SC 430 2003:

• Alt fusible link 120a
• Alt-s fuse 5a
• Battery
• Battery ground
• Charge indicator
• Combination meter
• Computer data lines system
• D-ig fuse 10a
• Driver side j/b (behind left kick panel)
• Engine control module (at left side of engine compartment in ecu box)
• Engine room 1 r/b (on right side of engine compt, behind strut tower)
• F15
• Generator
• Hot in on or start
• Ig+
• Ih (under steering column)
• Junction connector 4 & junction connector 5 (in ecu box)
• Mpx+
• Mpx1
• Mpx2
• Nca
• Passenger side j/b (behind right kick panel)
• Red

Starting Wiring Diagram for Lexus SC 430 2003

List of elements for Starting Wiring Diagram for Lexus SC 430 2003:

• Acc
• Am2
• Am2 fuse 30a
• Battery
• Battery ground
• Ed (rear of left fender)
• Engine control module (at left side of engine compt, in ecu box)
• Engine room 1 r/b (on right side of engine compt, forward of strut tower)
• Engine room 2 r/b (on left side of engine compt, forward of strut tower)
• Ignition switch
• Junction connector 3 (in engine room 2 r/b)
• Lock
• Nca
• Park/neutral position switch (on transmission)
• Short pin 1
• Short pin 2
• St2
• Sta
• Start
• Starter
• Starter fuse 7.5a
• Starter relay

SUPPLEMENTAL RESTRAINTS

Supplemental Restraints Wiring Diagram (1 of 2) for Lexus SC 430 2003

List of elements for Supplemental Restraints Wiring Diagram (1 of 2) for Lexus SC 430 2003:

• (at base of left "b" pillar) left pretensioner
• +sl
• +sr
• -sl
• -sr
• A20
• A21
• A22
• Air bag sensor assembly (at center of dash, below radio)
• Air bag squib (steering wheel pad)
• Dml+
• Dml-
• Dmr+
• Dmr-
• Driver side j/b (behind left kick panel)
• Esl
• Esr
• Fsr+
• Fsr-
• Hot in on or start
• Ig1
• Ig2
• Ig2 fuse 7.5a
• J/c j18 (at right quarter panel)
• Left door side air bag sensor
• Left side air bag squib
• Mpx-ig fuse 7.5a
• Mpx1
• Mpx2
• P2+
• P2-
• Passenger side j/b (behind right kick panel)
• Pl+
• Pl-
• Pnk
• Pr+
• Pr-
• Rbe+
• Right buckle switch & occupant detection sensor (under passenger's seat)
• Right door side air bag sensor
• Right pretensioner (at base of right "b" pillar)
• Right side air bag sensor (behind interior trim, forward of rear wheel)
• Right side air bag squib
• Sfl+
• Sfl-
• Sfr+
• Sfr-
• Sil
• Ssl+
• Ssl-
• Ssr+
• Ssr-
• Vupl
• Vupr

Supplemental Restraints Wiring Diagram (2 of 2) for Lexus SC 430 2003

List of elements for Supplemental Restraints Wiring Diagram (2 of 2) for Lexus SC 430 2003:

• (on left side dash brace) ii
• (partial) (behind left side of dash)
• (under steering column) ih
• A/c control assembly (behind center of dash)
• A10
• Air bag
• Air bag squib (front passenger air bag asssembly)
• Bl (under driver's seat)
• Combination meter
• D-ig fuse 10a
• Data link connector 3
• Dbkl
• Driver side j/b (behind left kick panel)
• Driver side j/b ecu (behind left kick panel)
• E10
• Engine control module (at left side of engine compartment, in ecu box)
• Engine room 2 r/b (on left front of engine compartment, forward of strut tower)
• Esl
• F13
• F15
• Front controller
• Gateway ecu (behind right side of dash)
• Hot in on or start
• J/c 20 (under right side of driver's seat)
• J/c 9 (behind top left end of dash)
• Left buckle switch (in left front seat belt buckle)
• Left front air bag sensor (at left front of engine compartment)
• Left side air bag sensor (behind interior trim, forward of left rear wheel)
• Mpi1
• Mpi2
• Mpl2
• Mpx +
• Mpx -
• Mpx 1
• Mpx 2
• Mpx-
• Mpx1
• Mpx2
• Passenger side j/b (behind right kick panel)
• Passenger side j/b ecu
• Right front air bag sensor (at right front of engine compartment)
• Skid control ecu (behind left side of dash)
• Solid state
• Srs
• Ssl+
• Ssl-
• Tire pressure monitor receiver (behind center of dash, below radio)
• Vupl

TRANSMISSION

A/T Wiring Diagram (1 of 2) for Lexus SC 430 2003

List of elements for A/T Wiring Diagram (1 of 2) for Lexus SC 430 2003:

• (engine harn, in ecu box) e5
• +b1
• +bm
• Accelerator position sensor (behind left center of dash)
• B16
• Batt
• C12
• C15
• Center j/b (behind right center of dash)
• Combination meter
• Computer data lines system
• D-ig fuse 10a
• D17
• Data link connector 3 (below left side of dash)
• Driver side j/b (behind left kick panel)
• Driver side j/b ecu (left end of dash)
• Ect pwr
• Ect snow
• Ed (left front fender)
• Efi fuse 25a
• Efi relay
• Electronically controlled transmission pattern select switch
• Engine control module (ecm) (at left side of engine compt, in ecu box)
• Engine controls system
• Engine room r/b 1 (right side compt, behind of engine strut tower)
• Engine room r/b 2 (left side of engine compt, behind strut tower)
• Epa
• Eptk
• Etcs fuse 15a
• F15
• Hot at all times
• Hot in on or start
• Ign fuse 5a
• Igsw
• Ih (under steering column)
• J/c 13 (behind right side of dash)
• J/c 2 (in engine room r/b 2)
• J/c 3 (in engine room r/b 2)
• J/c 4, j/c 5 (in ecu box) j5
• J/c 9 (behind top left end of dash)
• Mil
• Mpx1
• Mpx2
• Mrel
• P4 snow
• P6 mpx-
• Passenger side j/b (behind right kick panel)
• Passenger side j/b ecu (right side kick panel)
• Pwr
• Red
• Sil
• Snow
• Speedo
• Stop fuse 5a
• Stoplight switch (top of brake pedal bracket)
• Stp
• Stpi
• Stpo
• Tac
• Tach
• Vcpa
• Vpa
• Vpa2
• Vptk
• Wfse
• Wsfe

A/T Wiring Diagram (2 of 2) for Lexus SC 430 2003

List of elements for A/T Wiring Diagram (2 of 2) for Lexus SC 430 2003:

• (behind right kick panel) passenger side j/b
• (on transaxle) electronically controlled transmission solenoid
• (on transmission) (integral to park/neutral position switch) a/t indicator light switch
• At4
• Atl
• Braided
• C10
• C16
• E01
• E02
• E03
• Eb (side of right cylinder head)
• Ec (side of left cylinder head)
• Engine control module (ecm) (at left side of engine compt, in ecu box)
• Engine coolant temperature sensor (on top right side of engine)
• Eoil
• Eta
• Ethw
• Ge01
• J/c 7 (in ecu box)
• Me01
• Nca
• Nco+
• Nco-
• Nssd
• Nssl
• O/d direct clutch speed sensor (on trans)
• Oil
• Red
• Shift lock control ecu (under center console, near selector)
• Sln+
• Sln-
• Slt+
• Slt-
• Slu+
• Slu-
• Sp2+
• Sp2-
• Throttle control motor (on throttle body)
• Throttle position sensor (on throttle body)
• Thw
• Vehicle speed sensor (electronically controlled transmission) (on trans)
• Vta
• Vta2

TRUNK, TAILGATE, FUEL DOOR

Fuel Door Release Wiring Diagram for Lexus SC 430 2003

List of elements for Fuel Door Release Wiring Diagram for Lexus SC 430 2003:

• (behind right side of dash) j/c 13
• Bl (under driver's seat)
• Bp (at left quarterpanel)
• Computer data lines system
• Driver side j/b (behind left kick panel)
• Driver side j/b ecu
• E20
• Fuel
• Fuel lid opener motor (at left side of luggage compt)
• Fuel lid opener switch
• Fuel opn (0)
• Fuel opn (p)
• Fuel opn fuse 10a
• Gnd
• Hot at all times
• Ii (on left side dash brace)
• J/c 17
• L24
• Luggage room j/b (at left rear corner of luggage compt)
• Luggage room j/b ecu
• Mpx+
• Mpx-
• Mpx-b
• Mpx-b3 fuse 7.5a
• Mpx1
• Mpx2
• P-gnd
• Passenger side j/b (behind right kick panel)
• Red

Trunk Release & Pull Down Wiring Diagram for Lexus SC 430 2003

List of elements for Trunk Release & Pull Down Wiring Diagram for Lexus SC 430 2003:

• (behind right side of dash) j/c 13
• B20
• Bl (under driver's seat)
• Bp (at left quarterpanel)
• Center j/b (behind right center
• Cncl
• Computer data lines system
• D20
• Driver side j/b (behind left kick panel)
• Driver side j/b ecu
• E12
• F17
• Fuel opn fuse 10a
• Gnd
• Hot at all times
• Ig (left side of steering column)
• Ih (under steering column)
• Ii (on left side dash brace)
• J/c 17
• L-o/c (p)
• L22
• L24
• Lcm+
• Lct
• Lcte
• Lcty
• Luggage compartment door lock motor & detection switch (in luggage compt, near lock assembly)
• Luggage compartment door opener main switch
• Luggage compartment door opener switch
• Luggage room j/b (at left rear corner of luggage compt)
• Luggage room j/b ecu
• Mpx+
• Mpx-
• Mpx-b
• Mpx-b3 fuse 7.5a
• Mpx1
• Mpx2
• Of dash)
• P-gnd
• Passenger side j/b (behind right kick panel)
• Red
• Sliding roof control ecu (in left rear of luggage compt)
• Tsw

WARNING SYSTEMS

Key Reminder & Seat Belt Warning Wiring Diagram for Lexus SC 430 2003

List of elements for Key Reminder & Seat Belt Warning Wiring Diagram for Lexus SC 430 2003:

• A21
• A22
• Air bag sensor assembly (at center of dash, below radio)
• Bl (under driver's seat)
• Bq (at right quarterpanel)
• Buzzer
• Center j/b (behind right center of dash)
• Combination meter
• Computer data lines system
• Cty
• D-ig fuse 10a
• D17
• Dbkl
• Driver door ecu (in driver's door)
• Driver side j/b (behind left kick panel)
• Driver side j/b ecu (behind left kick panel)
• E16
• E17
• F15
• Front passenger seat belt warning light
• Fsr+
• Fsr-
• Gateway ecu (behind right side of dash)
• Hot at all times
• Hot in acc or on
• Hot in on or start
• Ig+
• Ih (under steering column)
• Instrument panel j/b (behind upper center of dash)
• J/c 13 (behind right side of dash)
• J/c 18
• J/c 20
• J/c 9 & 10 (behind top left end of dash)
• J10 c
• J9 c
• Ksw
• Left buckle switch (in left front seat belt buckle)
• Left door courtesy switch
• Mpd1
• Mpd2
• Mpi1
• Mpi2
• Mpl1
• Mpl2
• Mpx+
• Mpx-
• Mpx-b2 fuse 7.5a
• Mpx1
• Mpx2
• Open door indicator
• Passenger side j/b (behind right kick panel)
• Pblt
• Radio 2 fuse 10a
• Rbe+
• Red
• Right buckle switch & occupant detection sensor
• Seat belt indicator
• Transponder key computer (left side of dash, behind gauge assembly)
• Unlock warning switch

Tire Pressure Monitoring Wiring Diagram for Lexus SC 430 2003

List of elements for Tire Pressure Monitoring Wiring Diagram for Lexus SC 430 2003:

• (left side of steering column) ig
• B21
• B22
• Buzzer
• Center j/b (behind right center of dash)
• Combination meter
• Computer data lines system
• D-ig fuse 10a
• D20
• Driver side j/b (behind left kick panel)
• E16
• F15
• F17
• Gnd
• Hot at all times
• Hot in on or start
• Ig+
• Ih (under steering column)
• Junction connector 13 (behind right side of dash)
• Left front tire pressure antenna (at left front wheelwell)
• Left rear tire pressure antenna (at left rear side of luggage compt)
• Mpx+
• Mpx-
• Mpx-b2 fuse 7.5a
• Mpx1
• Mpx2
• Passenger side j/b (behind right kick panel)
• Pnk
• Right front tire pressure antenna (at right front wheelwell)
• Right rear tire pressure antenna (at right rear side of luggage compt)
• Skid control ecu (behind left end of dash)
• Sp1
• T10
• Tire pressure indicator
• Tire pressure monitor receiver (behind center of dash, below radio)
• Tire select switch

WIPER/WASHER

Front Wiper/Washer Wiring Diagram for Lexus SC 430 2003

List of elements for Front Wiper/Washer Wiring Diagram for Lexus SC 430 2003:

• Airbag
• C11
• Combination meter
• Combination switch
• Computer data lines system
• D-ig fuse 10a
• Driver side j/b (behind left kick panel)
• Ed (rear of left fender)
• Engine room 2 r/b (on left side of engine compt, forward of strut tower)
• Front controller
• Front wiper motor (on left side of firewall)
• Headlamp washer circuit
• Hot at all times
• Hot in on or start
• If (at left kick panel)
• Ig+
• J/c 3 (in engine room 2 r/b)
• J/c 8
• Mpx+
• Mpx-
• Mpx1
• Mpx2
• Passenger side j/b (behind right kick panel)
• Passenger side j/b ecu (right side kick panel)
• S/m
• S/s
• Wash relay
• Washer fuse 20a
• Washer ind
• Washer level sensor
• Washer motor
• Wip
• Wiper fuse 30a
• Wlvl
• Wsh-rly

Headlamp Washer Wiring Diagram for Lexus SC 430 2003

List of elements for Headlamp Washer Wiring Diagram for Lexus SC 430 2003:

• Bu+
• C11
• Combination switch
• Computer data lines system
• D-ig fuse 10a
• Driver side j/b (behind left kick panel)
• Driver side j/b ecu (behind left kick panel)
• Ed (rear of left fender)
• Engine room 1 r/b (on right side of engine compt, behind strut tower)
• Engine room 2 r/b (on left side of engine compt, forward of strut tower)
• Front controller
• Front wiper/ washer circuit
• Frwa
• H-lp cln fuse 30a
• Hdcl
• Hdlo
• Head
• Headlight cleaner control relay (at left front of engine compt, behind bumper)
• Headlight cleaner motor (at left front corner of engine compt, behind headlight)
• Headlight cleaner switch
• Hot at all times
• Hot in on or start
• J/c 3 (in engine room 2 r/b)
• J/c 4 (in ecu box)
• Mpx1
• Mpx2
• Passenger side j/b (behind right kick panel)
• Red
• Tx1
• Wash relay
• Washer fuse 20a
• Wsh-rly