All Wiring Diagrams for Lexus SC 430 2002 model – Arabalar için bağlantı şemaları

AIR CONDITIONING

Air Conditioning Wiring Diagrams (1 of 2) for Lexus SC 430 2002

List of elements for Air Conditioning Wiring Diagrams (1 of 2) for Lexus SC 430 2002:

(center of dash) air foot control servo motor
(engine harn, near battery) e1
(under steering column)
A/c control assembly (behind center of dash)
A/c room temperature sensor (center of dash)
A/c thermistor (center of dash)
A10
Acc
Aif
Air
Amcdr
Amcpa
Amhdr
Amhpa
Aod
Aof
Automatic light control sensor & a/c solar sensor (upper right side of dash)
Blower motor (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 (behind left kick panel)
Exhaust gas sensor (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 (upper center of dash)
Interior lights system
J/c 14 (right kick panel)
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 (luggage compt)
Telin
Tilt
Tp1
Tpdr
Tpo
Tppa
Tsdr
Tsl
Tspa
Tsr

Air Conditioning Wiring Diagrams (2 of 2) for Lexus SC 430 2002

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List of elements for Air Conditioning Wiring Diagrams (2 of 2) for Lexus SC 430 2002:

(dash harn, center of dash)
(left dash brace)
(left front fender)
(left side of engine compt) engine room 2 r/b
(right kick panel) passenger side j/b ecu
(right side of dash) j/c 14
A/c ambient temperature sensor (center of front bumper)
A/c fuse 5a
A/c magnetic clutch & lock sensor (on a/c compressor)
A/c triple pressure switch (upper left radiator support)
Acc comp relay
Acmg
Air inlet control servo motor (behind right side of dash)
Air mix control servo motor (driver side) (behind center of dash)
Air mix control servo motor (passenger side) (behind right center side of dash)
Air vent mode servo motor (behind right center of dash)
Airbag
C13
Computer data lines system
Cooling fan ecu (in front of engine compt)
Driver side j/b (left kick panel)
E17
Ec (side of left cyl head)
Ed (left front fender)
Engine control module (left side of eng compt)
Etam
F11
Fan relay
Gnd
Gnd (vz)
Gnd(m)
Gnd(s)
Hot at all times
Hot in accy or on
Htr relay
J/c 3 (engine room 2 r/b)
J/c 7 (in ecu box)
J/c 8 (left end of dash)
Lcki
M+(m)
M+(s)
M-(m)
M-(s)
Mcool
Mhot
Mpos 1
Mpos 2
Mpos 6
Mpx1
Mpx2
Passenger side j/b
Passenger side j/b (right kick panel)
Pre
Radio 2 fuse 10a
Rfc
Tam
Vz (gnd)

ANTI-LOCK BRAKES

Anti-lock Brake Wiring Diagrams (1 of 2) for Lexus SC 430 2002

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List of elements for Anti-lock Brake Wiring Diagrams (1 of 2) for Lexus SC 430 2002:

+bi
Abs mtr relay
Abs no.1 fuse 60a
Abs no.2 fuse 40a
Abs sol relay
Ast
Brake actuator
Brake fluid level warning switch (in brake fluid reservoir)
Driver side j/b (left kick panel)
Ed (left front fender)
Ee (left front fender)
Eng+
Eng-
Engine control module (at left side of eng compt, in ecu box)
Engine room no.1 r/b (on right side of eng compt, behind strut tower)
Engine room no.2 r/b (on left side of eng compt, behind strut tower)
Fl+
Fl-
Fr+
Fr-
Gnd1
Gnd2
Gnd3
Gnd4
Hot at all times
If (left kick panel)
Ii (left dash brace)
J/c j8
Lbl lbl
Left front abs speed sensor
Mr1
Mr2
Mt+
Mt-
Mtt
Neo
Pnk
Pps solenoid (at right front of eng)
R1+
R2+
Right front abs speed sensor
Sa1
Sa2
Sa3
Sflh
Sflr
Sfrh
Sfrr
Short pin no.3
Skid control ecu (behind left side of dash)
Sol+
Sol-
Srlh
Srlr
Srrh
Srrr
Str
Trc motor relay
Trc+
Trc-

Anti-lock Brake Wiring Diagrams (2 of 2) for Lexus SC 430 2002

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List of elements for Anti-lock Brake Wiring Diagrams (2 of 2) for Lexus SC 430 2002:

(at left kick panel) instrument panel j/b
(behind left side of dash) parking brake switch
(left side of steering column) ig
+bo
Abs ind
Abs-ig fuse 7.5a
Bat
Brake ind
Combination meter
Compuetr data lines system
Csw
D-ig fuse 10a
D/g
D20
Driver side j/b (behind left kick panel)
Driver side j/b ecu (left end of dash)
E10
E14
Ess
Flo
Ggnd
Gl1
Gl2
Headlights system
Hot at all times
Hot in run or start
Ig1
Ig2
Ign fuse 5a
Instrument panel j/b (at left kick panel)
J/c j12 (behind right side of dash)
Left kick panel j/b (at left kick panel)
Left rear abs speed sensor
Mpx1
Mpx2
Nca
Pkb
Pnk
Red
Right rear abs speed sensor
Rl+
Rl-
Rr+
Rr-
Skid control ecu (behind left side of dash)
Slip ind
Sp1
Ss1+
Ss1-
Steering sensor (on steering column)
Stop fuse 5a
Stop light switch (on top of brake pedal
Stp
Trig
Vgs
Vsc
Vsc off
Vsc off switch
Vsc warning buzzer
Vys
Yaw
Yaw rate sensor (below center of dash, forward of gear selector)
Yaw2
Yss

ANTI-THEFT

Anti-theft Wiring Diagram (1 of 2) for Lexus SC 430 2002

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List of elements for Anti-theft Wiring Diagram (1 of 2) for Lexus SC 430 2002:

(behind right side of dash) j/c 13
A19
A20
A21
A22
A25
A26
A27
A28
A29
A30
B13
B20
Bdr
Bl (under driver's seat)
C13
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 (right side of engine compt)
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 (right quarter panel)
Kul
L22
L23
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
Luggage compartment door lock motor
Luggage room j/b (left rear corner of luggage compt)
Luggage room j/b ecu (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 (left rear of luggage compt)
Tail fuse 7.5a
Wls1
Wlsw

Anti-theft Wiring Diagram (2 of 2) for Lexus SC 430 2002

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List of elements for Anti-theft Wiring Diagram (2 of 2) for Lexus SC 430 2002:

(16-19 not used)
(25-28 not used)
(34-40 not used)
(6-12 not used)
(behind gauge assembly) transponder key computer
(behind left kick panel) driver side j/b
(behind right kick panel) passenger side j/b
(front center of engine compt) engine hood courtesy switch
(left dash brace) ii
(under steering column) ih
+b1
+b2
A15
A16
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
D13
D19
D20
D21
D23
D24
Data
Driver side j/b (behind left kick panel)
Driver side j/b ecu (left end of dash)
Ed left front fender)
Efii
Efio
Engine control module (left side of engine compt, in ecu box)
Engine room 1 r/b (right side of engine compt)
Engine room 2 r/b (left side of engine compt)
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
J/c 2 (in engine room 2 r/b)
J/c 3 (in engine room 2 j/b)
J/c 9 & j/c 10 (top left end of dash)
Ksw
Main fuse 50a
Main luggage compartment door opener switch
Mpx-
Mpx1
Mpx2
Park/neutral position switch
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 (left end of dash)
Theft deterrent horn (right front of engine compt)
Transponder key amplifier (right of steering column)
Transponder key coil
Turn- haz fuse 15a
Txct
Unlock warning switch
Vc12
Wireless door lock buzzer (left rear corner of engine compt)
Wireless door lock control receiver (center of roof header)

BODY COMPUTER

Driver Side J/B ECU Wiring Diagram for Lexus SC 430 2002

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List of elements for Driver Side J/B ECU Wiring Diagram for Lexus SC 430 2002:

(w/ headlamps cleaner only)
Acc
Am1 fuse 7.5a
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 (at left kick panel)
E17
Engine controls system
Engine room no.1 r/b (on right side of eng compt, behind strut tower)
Exterior lights system
Fuel
Gnd
Gnd2
Haz
Hdcl
Hdcy or hdlo
Head
Headlights system
Hot at all times
Hot in run or start
Hrly
Ig (left side of steering column)
Ignition switch
Ii (left dash brace)
Instrument cluster system
Interior lights system
J/c13 (behind right side of dash)
J13
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 2002

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List of elements for Front Controller Wiring Diagram for Lexus SC 430 2002:

Computer data lines system
Computer data lines system computer data lines system
Driver side j/b (behind left kick panel)
Ed (left front fender)
Engine room no. 1 r/b (on right side of eng compt, behind strut tower)
Engine room no. 2 r/b (on left side of eng compt, behind strut tower)
Exterior lights system
Ffog-rly
Fhhi(1)
Fhhi(2)
Fmb3
Fmig
Front controller
Gnd
H-lp fuse 20a
Headlights system
Hlhl
Hlhr
Horn system
Horn-rly
Hot at all times
Hot in on or start
Hot with head lp relay energized
J/c 3 (in engine room no.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 2002

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List of elements for Luggage Room J/B ECU Wiring Diagram for Lexus SC 430 2002:

A10
A11
A12
A13
A14
B10
Bck1
Bk/up
Bp (left quarter panel)
Bubs
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
Computer data lines system
Defog relay & defog fuse
Driver side j/b (behind left kick panel)
Engine room no.1 r/b (on right side of eng, behind strut tower)
Exterior lights
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
Lug j/b fuse 50a
Luggage room j/b (left side of luggage compt)
Luggage room j/b ecu (left side of luggage compt)
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
Stop1
Stop2
Stp1
Stp3
Tail1
Til1
Til2
Trunk, tailgate & fuel doors system

Passenger Side J/B ECU Wiring Diagram for Lexus SC 430 2002

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List of elements for Passenger Side J/B ECU Wiring Diagram for Lexus SC 430 2002:

Acc
Airbag
Am1 fuse 5a
B/anc
Back
Bkll
Combination switch
Computer data lines system
Drive side j/b) (behind left kick panel)
Driver side j/b (at left kick panel)
Driver side j/b ecu
E17
Exterior lights system
F11
Fspt
Gnd
Gnd1
Hdlv
Headlights system
Hot at all times
Hot in on or start
Htr relay
Ig (left side of steering column)
Ignition switch
Ih (under steering column)
Ile
Instrument cluster system
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
P b/anc fuse 5a
Passenger side j/b (at right kick panel)
Passenger side j/b ecu (at right 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 2002

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List of elements for Data Link Connector Wiring Diagram for Lexus SC 430 2002:

A21
Airbag sensor assembly (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 3 (below left side of dash)
Driver side j/b (at left kick panel)
Ec (side of left cylinder head)
Engine control module (left side of engine compt in ecu box)
F16
Hot at all times
Ig (left side of steering column)
Ih (under steering column)
J/c 13 (behind right side of dash)
J/c 7 (in ecu box)
J/c 9 & j/c 10 (behind top left end of dash)
J/c j4, j5 (in ecu box)
J10
Multi display
Obd fuse 7.5a
Sil
Skid control ecu (behind left side of dash)
Tac
Tach
Wfse

High/Low Bus Wiring Diagram for Lexus SC 430 2002

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List of elements for High/Low Bus Wiring Diagram for Lexus SC 430 2002:

(behind right side of dash)
A/c control assembly
A10
A21
Acc
Airbag sensor assembly (front of center console)
Atx+
Atx-
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 side j/b (behind left kick panel)
Driver side j/b (left kick panel)
Driver side j/b ecu (at left kick panel)
Drivers door ecu (in drivers door)
Drivers seat ecu (under drivers seat)
E10
E16
E18
Engine control module (left side of engine compt in ecu box)
Engine room no 2 r/b (left side of engine compt, behind 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 accy
Ig (left side of steering column)
Ih (under steering column)
Instrument panel j/b (behind upper center of dash)
J/c 13
J/c 13 (behind right side of dash)
J/c 9 & j/c 10 (top left end of dash)
J10
Luggage room j/b ecu (left rear corner of luggage compt)
Mpd1
Mpd2
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 side j/b (behind right kick panel)
Passenger side j/b ecu
Pnk
Radio & player
Radio no.2 fuse 10a
Red
Right front power seat ecu (under right front seat)
S18
Sil
Skid control ecu (behind left end of dash)
Sliding roof control ecu (left rear of luggage compt)
T13
Theft deterrent ecu (behind left end of dash)
Tilt and 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/ navigation
Wfse

COOLING FAN

Cooling Fan Wiring Diagram for Lexus SC 430 2002

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List of elements for Cooling Fan Wiring Diagram for Lexus SC 430 2002:

(engine harn, near battery)
A/c triple pressure switch (upper left radiator support)
C11
Cooling fan ecu (in front of engine compt)
Driver side j/b (behind left kick panel)
Ed (left front fender)
Engine control module (left side of eng compt)
Engine coolant temperature sensor (top right side of engine)
Engine room 1 r/b (right side of eng compt)
Engine room 2 r/b (left side of eng compt)
Ethw
Fan fuse 10a
Fan relay
Gnd(m)
Gnd(s)
Heater fuse 10a
Hot at all times
Hot in on or start
Ii (left dash brace)
J/c 1 (in engine room 2 r/b)
J/c 3 (in engine room 2 r/b)
J/c 8 (behind left kick panel)
M+(m)
M+(s)
M-(m)
M-(s)
Pre
Rfc
Thw

CRUISE CONTROL

Cruise Control Wiring Diagram for Lexus SC 430 2002

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List of elements for Cruise Control Wiring Diagram for Lexus SC 430 2002:

(behind left side of dash) data link connector 3
(under center console) shift lock control ecu
+b1
+bm
Accel position sensor (top center of engine)
At4
Batt
C10
C15
Cancel
Ccs
Center j/b (right center of dash)
Combination meter
Computer data lines system
Cruise
Cruise control switch
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 (left end of dash)
E01
E02
E03
E19
Eb (side of right cylinder head)
Ec (side of left cylinder head)
Ed (left front fender)
Efi fuse 25a
Efi relay
Eng+
Eng-
Engine control module (left side of engine compt, in ecu box)
Engine room 1 r/b
Engine room 2 r/b (left side of engine compt)
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)
J/b 2 (in engine room 2 r/b)
J/c (in ecu box)
J/c 2 (in engine room 2 r/b)
J/c 3 (in engine room 2 r/b)
J/c 4 (in ecu box)
J/c 7 (in ecu box)
J/c 9 (top left end of dash)
Me01
Mpx1
Mpx2
Mrel
Neo
Nssd
Park/ neutral position switch (on trans)
Passenger side j/b (behind right kick panel
Passenger side j/b (behind right kick panel)
Pnk
Red
Res/ acc
Set/ coast
Shield
Sil
Skid control ecu (behind left side of dash)
Sp1
Sp2+
Sp2-
Speedometer
St1-
Stop fuse 5a
Stop light switch (on brake pedal bracket)
Stp
Stpi
Stpo
Throttle control motor & sensor (on throttle body)
Trc+
Trc-
Vcpa
Vehicle speed sensor (elec ctrl transmission) (on transmission)
Vpa
Vpa2
Vptk
Vta
Vta2
Wfse

DEFOGGERS

Heated Mirrors Wiring Diagram for Lexus SC 430 2002

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List of elements for Heated Mirrors Wiring Diagram for Lexus SC 430 2002:

(right quarter panel)
(right side of dash) j/c 13
(under driver's seat) bl
Bdr
Computer data lines system
Cpub
D-door fuse 25a
D17
D19
Driver door ecu (in driver's door)
Driver side j/b (left kick panel)
Engine room 1 j/b (right side of engine compt)
F11
Gnd
Hot at all times
Hot in on or start
Htr+
Htr-
I15
Instrument panel j/b (upper center of dash)
J/c 18
Left remote control mirror
Luggage room j/b (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
Passanger side j/b (right kick panel)
Passenger door ecu (in right door)
Right remote control mirror heater
Sig

Rear Defogger Wiring Diagram for Lexus SC 430 2002

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List of elements for Rear Defogger Wiring Diagram for Lexus SC 430 2002:

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

ELECTRONIC POWER STEERING

Electronic Power Steering Wiring Diagram for Lexus SC 430 2002

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List of elements for Electronic Power Steering Wiring Diagram for Lexus SC 430 2002:

+bi
+bo
Abs-ig fuse 7.5a
Bat
Center j/b (behind right center of dash)
Combination meter
D/g
Data link connector no.1 (left side of eng compt, behind ecu box)
Driver side j/b (behind left kick panel)
E10
E14
E16
Ed (left front fender)
Ee (left front fender)
Ess
Gnd1
Gnd2
Gnd3
Gnd4
Hot at all times
Hot in on or start
Ig1
Ih (under steering column)
J/c 13 (behind right side of dash)
J/c 19, j/c 10 (behind upper left end of dash)
J10
Mpx-b2 fuse 7.5a
Mxp1
Passenger side j/b (behind right kick panel)
Pnk
Pps solenoid (at right front of eng)
Red
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 Diagrams (1 of 6) for Lexus SC 430 2002

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List of elements for 4.3L, Engine Performance Wiring Diagrams (1 of 6) for Lexus SC 430 2002:

(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 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 (below left side of dash)
Driver side j/b (behind left kick panel)
E5 (engine harn, in ecu box)
Ect pwr
Ect snow
Ed (left front 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 Diagrams (2 of 6) for Lexus SC 430 2002

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List of elements for 4.3L, Engine Performance Wiring Diagrams (2 of 6) for Lexus SC 430 2002:

(in ecu box) j/c 4, j/c 5
(left end of dash) driver side j/b ecu
(on top of brake pedal bracket) stoplight switch
Cir opn relay
D-ig fuse 10a
Driver side j/b (behind left kick panel)
Ed (left front 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 Diagrams (3 of 6) for Lexus SC 430 2002

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List of elements for 4.3L, Engine Performance Wiring Diagrams (3 of 6) for Lexus SC 430 2002:

(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 (left front 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 Diagrams (4 of 6) for Lexus SC 430 2002

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List of elements for 4.3L, Engine Performance Wiring Diagrams (4 of 6) for Lexus SC 430 2002:

(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 (side of right cyl head)
Ec (side of left 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 Diagrams (5 of 6) for Lexus SC 430 2002

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List of elements for 4.3L, Engine Performance Wiring Diagrams (5 of 6) for Lexus SC 430 2002:

(engine harn, top left side of engine)
(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 harn, top rear of engine)
E2g
Ec (side of left 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-
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 Diagrams (6 of 6) for Lexus SC 430 2002

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List of elements for 4.3L, Engine Performance Wiring Diagrams (6 of 6) for Lexus SC 430 2002:

(at top left rear of engine) noise filter (ignition left bank)
(engine harn, top left side of engine)
(engine harn, top rear of engine)
(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 (side of right cyl head)
Ec (side of left 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
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 & sensor (on throttle body)
Thw
Vta
Vta2
Vvl+
Vvl-
Vvr+
Vvr-

EXTERIOR LIGHTS

Back-up Lamps Wiring Diagram for Lexus SC 430 2002

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List of elements for Back-up Lamps Wiring Diagram for Lexus SC 430 2002:

A/c control assembly (behind center of dash)
A10
Airbag sensor assembly (at center of dash, below radio)
B j4
Back- up light switch
Bck1
Bk/up
Bl (under driver's seat)
Combi- nation switch (behind left end of dash)
Combination meter
D-ig fuse 10a
Drive side no.2 j/b (behind left kick panel)
Drive side no.2 j/b (on right side of eng
Driver side j/b ecu (left end of dash)
E10
Engine control module (left side of eng compt, in ecu box)
Engine room no.1 r/b (on right side of eng compt, behind strut tower)
Engine room no.2 r/b (on left side of eng compt, behind strut tower)
F13
Front controller
Gateway ecu (behind right side of dash)
Hot at all times
Hot with ig1 relay energized
J/c j17 (left quarter panel)
J/c j4,j5 (in ecu box)
J5 a
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
Pass- enger side j/b ecu
Passenger side j/b (behind right kick panel)
Pmx1
Pmx2
Red
Right back- up light
Rr j/b fuse 50a
Skid control ecu (behind left end of dash)
Till & 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 2002

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List of elements for Exterior Lamps Wiring Diagram (1 of 2) for Lexus SC 430 2002:

(left front fender)
(on left side of eng compt, behind strut tower) eng room no.2 r/b
Bl (under driver's seat)
Bubs
C11
C16
Center j/b (behind right center of dash)
Combination meter
Computer data lines system
Cra relay
Driver side no.2 j/b (behind left kick panel)
Engine room no.1 r/b (on right side of eng compt, behind strut tower)
Fmb3
Fmig
Front con- troller
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 j1 (in eng room no.2 r/b)
J/c j13 (behind right side of dash)
J/c j14 (right kick panel)
J/c j17 (left quarter panel)
J/c j3 (in eng room no.2 r/b)
J/c j8 (behind left kick panel)
J25
L22
L23
L24
Lce lp fuse 7.5a
Lce1
Left front parking light
Left rear combination light
Left rear side marker light
Lh stop light
License plate light
Luggage room j/b (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-grd
Passenger side no.2 j/b (behind right kick panel)
Red
Rh stop light
Right front parking light
Right rear combination light
Right rear side marker 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 2002

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List of elements for Exterior Lamps Wiring Diagram (2 of 2) for Lexus SC 430 2002:

(on top of brake pedal bracket) stop light switch
(under steering column) ih
+ig
A/c control assembly
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 (left front fender)
Engine room no.1 r/b (on right side of eng compt, behind strut tower)
F15
Haz
Hazard switch
Hot at all times
Hot with ig1 relay energized
Ig+
Ih (under steering column)
J/c j12 (behind right side of dash)
J/c j13 (behind right side of dash)
J/c j14 (right kick panel)
Left front turn signal light
Lh turn
Mpx+
Mpx+b
Mpx-
Mpx-b2 fuse 7.5a
Mpx1
Mpx2
Passenger side j/b (behind right kick panel)
Rear lights
Red
Rh turn
Right front turn signal light
Stop fuse 5a
Stpi
Tail (canada)
Turn signal flasher relay (behind left side of dash, near driver side j/b)
Turn- haz fuse 15a

GROUND DISTRIBUTION

Ground Distribution Wiring Diagram (1 of 3) for Lexus SC 430 2002

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List of elements for Ground Distribution Wiring Diagram (1 of 3) for Lexus SC 430 2002:

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 2002

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List of elements for Ground Distribution Wiring Diagram (2 of 3) for Lexus SC 430 2002:

(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 2002

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List of elements for Ground Distribution Wiring Diagram (3 of 3) for Lexus SC 430 2002:

A12
A13
A17
Auto antenna control relay
B19
Bl (under driver's seat)
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
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)
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 2002

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List of elements for Headlamps Wiring Diagram (1 of 2) for Lexus SC 430 2002:

(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 ecu
E14
E16
F11
F15
Fr fog fuse 15a
Gateway ecu (behind right side of dash)
Gnd
Gnd2
Head
Head (1) indicator
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 (left dash brace)
Instrument panel j/b (behind upper center of dash)
Junction connector j/c 13 (behind right side of dash)
Luggage room j/b ecu (at left rear corner of luggage compartment)
Mpd1
Mpd2
Mpi1
Mpi2
Mpl1
Mpl2
Mpx+
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 and telescopic ecu (behind left end of dash)
Tx1

Headlamps Wiring Diagram (2 of 2) for Lexus SC 430 2002

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List of elements for Headlamps Wiring Diagram (2 of 2) for Lexus SC 430 2002:

(on left side of engine compartment. behind strut tower) engine room no. 2 r/b
(on right side of engine compartment. behind strut tower) engine room no. 1 r/b
Cra relay
E10
Ed (left front 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
Junction connector j/c 14 (behind right side of dash)
Junction connector j/c 3 (in engine room no. 2 r/b)
Junction connector j/c 8 (behind left end of dash)
Left front fog light
Left headlight (high)
Left headlight (low)
Mpx-ig fuse 7.5a
Mpx1
Mpx2
Passenger side j/b (behind right kick panel)
Red
Right front fog light
Right headlight (high)
Right headlight (low)
Tail-rly

Headlamps Leveling Wiring Diagram for Lexus SC 430 2002

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List of elements for Headlamps Leveling Wiring Diagram for Lexus SC 430 2002:

Beam level indicator
C13
C15
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 (forward of left front strut tower)
Gnd
H-lp lvl fuse 5a
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 j/c 1 (in engine room no. 2 r/b)
Junction connector j/c 13 (behind right side of dash)
Left headlight beam level control actuator (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 (under left rear of vehicle)
Red
Rh+
Rh-
Rh1
Rh2
Rh3
Rh4
Rhe
Rhg
Rht
Right headlight beam level control actuator (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 2002

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List of elements for Horn Wiring Diagram for Lexus SC 430 2002:

Combination switch
Computer data lines system
Driver side j/b (behind left kick panel)
Driver side j/b ecu (left end of dash)
Ed (left front fender)
Engine room 1 r/b (right side of engine compt)
Engine room 2 r/b (left side of engine compt)
Front controller
Gnd
Horn fuse 10a
Horn relay
Horn rly
Horn switch
Hot at all times
J/c 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 2002

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List of elements for Instrument Cluster Wiring Diagram for Lexus SC 430 2002:

(canada)
(left dash brace) ii
(side of left cylinder head) ec
(usa)
16d
A10
A11
A12
A13
A14
A16
A18
A19
A20
A21
Abs
B13
B14
B16
B17
Beam level
Brake
Brake fluid level warning switch (in brake fluid reservoir)
Buzzer
Center j/b (behind right center of dash)
Charge
Combination meter
Computer data lines system
Cruise
D-ig fuse 10a
D11
D20
D21
Data link connector 3 (left side of dash)
Driver side j/b (behind left kick panel)
Driver side j/b behind left kick panel)
E10
E11
E14
E16
Ect pwr
Engine control module (left side of engine compt, in ecu box)
Engine oil level sensor (on right front of engine)
Etc snow
Exterior lights system
F15
Front fog
Fuel
Fuel sender (main) (in fuel tank)
Fuel sender (sub) (in fuel tank)
Gnd
Head
High beam
Hot at all times
Hot in on or start
Ih (under steering column)
Interior lights system
J/c 13 (behind right side of dash)
J/c 7 (in ecu box)
Lbl
Left turn
Magnetic field sensor (beneath top center of dash)
Malfunction
Malfunction indicator
Mol
Mops
Mpx-b2 fuse 7.5
Mpx1
Mpx2
Multi-display
Navigation ecu (right rear corner of luggage compt)
Nca
Odometer/ trip
Oil level
Oil pressure
Oil pressure switch (on left front side of engine)
Open door
Parking brake switch (left side of dash)
Passenger side j/b (behind right kick panel)
Pkb
Pnk
Rear lights
Red
Right turn
Seat belt
Sig
Skid control ecu (behind left side of dash)
Slip
Sp1
Spd
Speedometer
Srs
Stereo component amplifier (right rear corner of luggage compt)
Tach
Tachometer
Tail
Tire pressure
Trip switch
Vmid
Vsc
Vsc off
Warning systems
Washer
Water temperature

INTERIOR LIGHTS

Courtesy Lamps Wiring Diagram (1 of 2) for Lexus SC 430 2002

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List of elements for Courtesy Lamps Wiring Diagram (1 of 2) for Lexus SC 430 2002:

A/c control assembly (behind center of dash)
A10
Airbag
C10
Center j/b (behind right side of dash, behind glove box)
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 (left side of engine compt, in ecu box)
Engine room no.2 r/b (left side of engine compt, behind strut tower)
Front controller
Fspt
Gateway ecu (behind right side of dash)
Gnd
Gnd1
Hot at all times
I/p junction block (behind right side 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 (right quarter panel)
J/c 9 & j/c 10 (behind left side of dash)
J10
Left foot light
Left vanity light
Map
Mpd1
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
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 doof lock control receiver (on center of roof header)

Courtesy Lamps Wiring Diagram (2 of 2) for Lexus SC 430 2002

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List of elements for Courtesy Lamps Wiring Diagram (2 of 2) for Lexus SC 430 2002:

Airbag sensor assembly (behind lower center of dash, on transmission tunnel)
Bdr
Bl (under drivers seat)
Combination meter
Combination switch
Cty
Cty p9
Ctyb
Cyl
D-door fuse 25a
D-ig fuse 10a
Driver door ecu (inside front of left front door)
Driver side j/b (at left kick panel)
Drivers seat ecu (below drivers seat)
Engine room no. 1 r/b (left front of engine compt., behind headlight)
F12
F13
F15
Front passengers seat ecu (below front passengers seat)
Gnd d19
Gnd p11
Hot at all times
Hot in on and start
Ig+
Ih (under steering column)
J/c 13 (behind upper center of dash)
J/c 17 (behind upper center of dash)
J/c 18 (right quarter panel)
J/c 20 (behind upper right center of dash)
L22
L24
Left buckle switch
Left door courtesy light
Left door courtesy switch
Left luggage compartment light
Left scuff plate light
Lgcy
Luggage room j/b (left rear corner of luggage compartment)
Luggage room j/b ecu
Mpx+b
Mpx-
Mpx-b
Mpx1
Mpx2
Mpx2 d17
P-door fuse 25a
P-gnd
Passenger door ecu (inside front of right front door)
Passenger side j/b (at right kick panel)
Pnk
Red
Right door courtesy switch
Right luggage compartment light
Skid control ecu (behind left side of dash)
Sliding roof control ecu (rear of luggage compartment)
Tilt and telescopic ecu (behind left end of dash)

Instrument Illumination Wiring Diagram (1 of 2) for Lexus SC 430 2002

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List of elements for Instrument Illumination Wiring Diagram (1 of 2) for Lexus SC 430 2002:

A j9
A/c control assembly
A/c control assembly (behind center of dash)
A/t shift lever illunination
A10
Audio door control switch
B19
Bu+
Bu-
Center j/b (behind right center of dash)
Cigarette lighter
Combination switch
D10
D18
D20
Drivers side j/b (behind left kick panel)
Drivers side j/b ecu
E10
E15
Electronically controlled transmission pattern select switch
Engine control module (left side of engine compt, in ecu box)
Engine room no.2 r/b (left side of engine compt, behind strut tower)
F10
F11
Front controller
Gateway ecu (behind right side of dash)
Gnd
Gnd2
Hot at all times
I/p junction block (behind right side of dash)
Ig (left side of steering column)
Ih (under steering column)
Ii (left dash brace)
J/c 13 (behind upper center of dash)
J/c 9 & j/c 10 (behind top left end of dash)
J10
Mpd1
Mpi1
Mpi2
Mpl1
Mpl2
Mpx+
Mpx-
Mpx-b3 fuse 7.5a
Mpx-ig fuse 7.5a
Mpx1
Mpx2
Multi- display
Panel fuse 5a
Panel1
Panel2
Passenger side j/b (right kick panel)
Pnk
Radio and player
Red
Remote control mirror switch
Rheostat
Seat heater switch
Sw1
Sw2
Sw3
Tilt and 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 2002

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List of elements for Instrument Illumination Wiring Diagram (2 of 2) for Lexus SC 430 2002:

Airbag
Airbag sensor assembly (center of dash, below radio)
Bdr
Bl (under drivers seat)
Bq (rear quarter panel)
Bubs
Combination meter
D-door fuse 25a
D-ig fuse 10a
Driver door ecu (inside front of left front door)
Driver side j/b (at left kick panel)
Drivers seat ecu (below drivers seat)
E14
E16
Engine room no. 1 r/b (left front of engine compt., behind headlight)
F13
F15
F18
Front passengers seat ecu (below front passengers seat)
Glove box light
Glove box light switch
Gnd d19
Gnd p11
Hot at all times
Hot in on and start
Ig (left side of steering column)
Ig+
Ih (under steering column)
J/c 13 (behind upper center of dash)
J/c 17 (behind upper center of dash)
J/c 18 (right quarter panel)
L24
Luggage room j/b (left rear corner of luggage compartment)
Luggage room j/b ecu
Mpx
Mpx+
Mpx+b
Mpx-
Mpx- p6
Mpx-b2 fuse 7.5a
Mpx1
Mpx1 p9
Mpx2
Mpx2 d17
P-door fuse 25a
P-gnd
Passenger door ecu (inside front of right front door)
Passenger side j/b (at right kick panel)
Passenger side j/b (behind right kick panel)
Passenger side j/b ecu
Pnk
Power window master switch
Pwe
Pws
Red
Right door lock control switch
Right power window control switch
Skid control ecu (behind left side of dash)
Sliding roof control ecu (rear of luggage compartment)
Theft deterrent ecu (behind left end of dash)
Wls1

MEMORY SYSTEMS

Memory System Wiring Diagrams (1 of 3) for Lexus SC 430 2002

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List of elements for Memory System Wiring Diagrams (1 of 3) for Lexus SC 430 2002:

Bdr
Bl (under driver's seat)
Cm+r
Computer data lines system
Cpub
D-door fuse 25a
D-ig fuse 10a
D18
D19
De2
Dmhr
Dmvr
Driver door ecu (in driver's door)
Driver side j/b (behind left kick panel)
Driver side j/b ecu (left end of dash)
Driving position memory switch
Dvc
Engine control module (left side of engine compt, in ecu box)
Engine room 1 r/b (right side of engine compt, behind strut tower)
F11
Gnd
Hot at all times
Hot in on or start
Hssr
I15
Ii (left dash brace)
Ill+
Ill-
Instrument panel j/b (upper center of dash)
Interior lights system
J/c 13 (right side of dash)
J/c 18 (right quarter panel)
J/c 4
J/c 5 b
Junction connector (in ecu box)
Left remote control mirror
Lt/rt m
Luggage room j/b (left rear corner of luggage compt)
Mirror retractor switch
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

Memory System Wiring Diagrams (2 of 3) for Lexus SC 430 2002

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List of elements for Memory System Wiring Diagrams (2 of 3) for Lexus SC 430 2002:

(under driver's seat)
Bl (under driver's seat)
Center j/b (right center of dash)
Computer data lines system
D p/seat fuse 30a
Driver side j/b (behind left kick panel)
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
Driver's support lumbar control switch
Ecub
Ecue
F11
Fdwn
Frv+
Frv-
Fup
G10
Gnd
Hot at all times
Hot in on or start
I17
I22
Ih (under steering column)
Ii (left dash brace)
Instrument panel j/b (upper center of dash)
J/c 13 (right side of dash)
J/c 19 (under driver's seat)
J/c 20 (below driver's seat)
J10
Ksw
Ldwn
Lft+
Lft-
Lup
Mpx-b1 fuse 7.5a
Mpx-b3 fuse 7.5a
Mpx-ig fuse 7.5a
Mpx1
Mpx2
P21
P22
Passenger side j/b (behind right kick panel)
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)
Unlock warning switch (behind left side of dash)

Memory System Wiring Diagrams (3 of 3) for Lexus SC 430 2002

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List of elements for Memory System Wiring Diagrams (3 of 3) for Lexus SC 430 2002:

(under front passenger's seat)
Bm (under front passenger's seat)
Computer data lines system
Fdwn
Frv+
Frv-
Fup
Gnd
Hot at all times
I19
J/c 21 (below passenger's seat)
J/c 22 (under passenger's seat)
Ldwn
Lft+
Lft-
Lup
Mpx-b1 fuse 7.5a
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 2002

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List of elements for Navigation Wiring Diagram for Lexus SC 430 2002:

A/c system
Acc
Atx+
Atx-
Aui+
Aui-
Auo+
Auo-
B1+
B13
B18
Braided
Center j/b (behind right center of dash)
Computer data lines
D11
D18
D20
Data link connector 3 (behind left side of dash)
Driver side j/b (behind left kick panel)
E10
E11
E16
E17
Engine room no.2 r/b (left side of eng compt, behind strut tower)
Fl+
Fl-
G10
Gnd1
Hot at all times
Hot in accy and on
Hot in on and start
Hot in start
Ig (left side of steering column)
Ih (under steering column)
Instrument cluster system
J/c 12 (behind right side of dash)
J/c 15 (under right side of package tray)
J/c 18 (right quarter panel
J/c 9 &10 (behind top left end of dash)
J10
Left door speaker
Multi-display
Mut2
N-mu
Navigation ecu (right rear corner of luggage compt)
Opn
P-ig fuse 10a
Parking brake switch
Passenger side j/b (behind right kick panel)
Passenger side j/b ecu
Pkb
Pnk
Radio 2 fuse 10a
Radio and player
Re1
Re2
Red
Rev
Spd
St1
Starter fuse 7.5a
Stereo component amplifier (right rear corner of luggage compt)
Sync
T21
T2o
Telephone ecu (center rear of luggage compt)
Tilt
Tv fuse 5a
Tx+
Tx-
Txd+
Txd-
Txs+
Txs-
W/ telephone
W/o telephone

PASSIVE RESTRAINTS

Passive Restraint Wiring Diagram for Lexus SC 430 2002

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List of elements for Passive Restraint Wiring Diagram for Lexus SC 430 2002:

A21
A22
Air bag sensor assembly (below radio)
Airbag
Bkll
Bl (under driver's seat)
D-ig fuse 10a
Driver side j/b (behind left kick panel)
E11
Hot in run or start
J/c j18 (right quarter panel)
Left buckle switch (in buckle)
Left tension reducer solenoid (base of left "b" pillar)
Passenger side j/b (behind right kick panel)
Passenger side j/b ecu
Right buckle switch (in buckle)
Right tension reducer solenoid (base of right "b" pillar)

POWER ANTENNA

Power Antenna Wiring Diagram for Lexus SC 430 2002

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List of elements for Power Antenna Wiring Diagram for Lexus SC 430 2002:

(right side of eng compt, behind strut tower)
Auto antenna control relay & motor
Center j/b (behind right center of dash)
E13
E17
Engine room no.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 (right side of dash)
J/c 15
J/c 18 (right rear of luggage compt)
J/c 9 (top left end of dash)
P-ig fuse 10a
Passenger side j/b (behind left kick panel)
Radio & player
Radio 2 fuse 10a
Radio no.1 fuse 30a

POWER DISTRIBUTION

Power Distribution Wiring Diagram (1 of 3) for Lexus SC 430 2002

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List of elements for Power Distribution Wiring Diagram (1 of 3) for Lexus SC 430 2002:

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 2002

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List of elements for Power Distribution Wiring Diagram (2 of 3) for Lexus SC 430 2002:

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 2002

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List of elements for Power Distribution Wiring Diagram (3 of 3) for Lexus SC 430 2002:

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 DOOR LOCKS

Power Door Lock Wiring Diagram (1 of 2) for Lexus SC 430 2002

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List of elements for Power Door Lock Wiring Diagram (1 of 2) for Lexus SC 430 2002:

(behind right side of dash) j/c 13
A19
A20
A21
A22
A25
A26
A27
A28
A29
A30
B13
B20
Bdr
Bl (under driver's seat)
C13
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 (right side of engine compt)
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 (right quarter panel)
Kul
L22
L23
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
Luggage compartment door lock motor
Luggage room j/b (left rear corner of luggage compt)
Luggage room j/b ecu (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 (left rear of luggage compt)
Tail fuse 7.5a
Wls1
Wlsw

Power Door Lock Wiring Diagram (2 of 2) for Lexus SC 430 2002

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List of elements for Power Door Lock Wiring Diagram (2 of 2) for Lexus SC 430 2002:

(16-19 not used)
(25-28 not used)
(34-40 not used)
(6-12 not used)
(behind gauge assembly) transponder key computer
(behind left kick panel) driver side j/b
(behind right kick panel) passenger side j/b
(front center of engine compt) engine hood courtesy switch
(left dash brace) ii
(under steering column) ih
+b1
+b2
A15
A16
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
D13
D19
D20
D21
D23
D24
Data
Driver side j/b (behind left kick panel)
Driver side j/b ecu (left end of dash)
Ed left front fender)
Efii
Efio
Engine control module (left side of engine compt, in ecu box)
Engine room 1 r/b (right side of engine compt)
Engine room 2 r/b (left side of engine compt)
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
J/c 2 (in engine room 2 r/b)
J/c 3 (in engine room 2 j/b)
J/c 9 & j/c 10 (top left end of dash)
Ksw
Main fuse 50a
Main luggage compartment door opener switch
Mpx-
Mpx1
Mpx2
Park/neutral position switch
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 (left end of dash)
Theft deterrent horn (right front of engine compt)
Transponder key amplifier (right of steering column)
Transponder key coil
Turn- haz fuse 15a
Txct
Unlock warning switch
Vc12
Wireless door lock buzzer (left rear corner of engine compt)
Wireless door lock control receiver (center of roof header)

POWER MIRRORS

Power Mirror Wiring Diagram for Lexus SC 430 2002

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List of elements for Power Mirror Wiring Diagram for Lexus SC 430 2002:

Center j/b (behind right center of dash)
D19
D20
Driver door ecu (in driver's door)
Ec+
Ec-
Eci+
Eci-
F14
F16
Gnd
Hot in on or start
I12
Ig (left side of steering column)
Inner mirror
J/c 9, j/c 10 (top left end of dash)
J10
Left remote control mirror
P-ig fuse 10a
Passenger door ecu (in right door)
Passenger side j/b (behind right kick panel)
R14
R15
Right remote control mirror

POWER SEATS

Heated Seats Wiring Diagram for Lexus SC 430 2002

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List of elements for Heated Seats Wiring Diagram for Lexus SC 430 2002:

B14
Bl (under drivers seat)
Bm (under front passengers seat)
Center j/b (behind right center of dash)
Drivers seat heater controller (under seat)
Front passenger seat heater control (under seat)
Hot at all times
Hot in on and start
Hot in on or start
Ig (left side of steering column)
Ih (under steering column)
J/c 20 (under right side of drivers seat)
J/c 21 (under left side of front passengers seat)
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 (1 of 2) for Lexus SC 430 2002

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List of elements for Retractable Hardtop Provision (1 of 2) for Lexus SC 430 2002:

(under left side of package tray)
Blgl
Blgr
Bpt
Brfl
Brfr
C10 red
Cls
Computer data lines
Cpub
Hot at all times
J/c 17 (left quarter panel)
L22
L24
Lct
Lcte
Lcty
Left quarter window motor motor
Lfl+
Lfl-
Lfr+
Lfr-
Lgg lh fuse 20a
Lgg rh fuse 20a
Limit switch (left luggage front lock) (left rear of luggage compt)
Limit switch (package tray 1)
Limit switch (roof close) (left) (left side of roof)
Limit switch (roof close) (right) (right side of roof)
Limit switch (roof lock) (left side of roof)
Limit switch (roof position no.1 and no.2 (left rear of luggage compt)
Limit switch (tonneau cover) (left rear of luggage compt)
Lll
Llle
Lml+
Lml-
Lpl
Lplb
Lple
Luggage compt door closer motor (left) (right side of luggage compt)
Luggage compt door closer motor (right) (right side of luggage compt)
Luggage compt door detection switch (rear of luggage compt)
Luggage room j/b (left rear corner of luggage compt)
Luggage room j/b ecu (left rear corner of luggage compt)
Mpx+
Mpx-
Open
P-tray fuse 20a
Package tray motor
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
Roof rh fuse 20a
Rpl
Rplb
Rple
S17
S19
S21
Sliding roof control ecu (left side of luggage compt)
Swe
Tcs
Tcse

Retractable Hardtop Provision (2 of 2) for Lexus SC 430 2002

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List of elements for Retractable Hardtop Provision (2 of 2) for Lexus SC 430 2002:

(front of luggage compt)
(right front of luggage compt)
(right rear of luggage compt)
A/c control assembly
A10
B2 (right rear of luggage compt)
Bm (under front passengers seat)
Cls
Computer data lines
Drivers side j/b (behind left kick panel
Gnd
Hot at all times
Hot in on and start
I20
Ign
Ih (under steering column)
Instrument panel j/b (upper center of dash)
J/c 13 (behind right side of dash)
J/c 18 (rear quarter panel)
Lc4
Lcre
Left luggage compt door drive motor
Left roof drive motor
Limit switch (luggage compt door open and close)
Limit switch (package tray no. 2)
Limit switch (right luggage front lock) (right rear of luggage compt)
Limit switch (roof open)
Limit switch (roof position no. 3)
Llr
Llre
Lmr+
Lmr-
Lor
Lpr
Lprb
Lpre
Mpx+
Mpx-
Mpx-b1 fuse 7.5a
Mpx-ig fuse 7.5a
Mpx2
Open
Passengers side j/b (behind right kick panel)
Pnk
Qwr+
Qwr-
Red
Rhr1
Rhr2
Rhre
Right drive motor
Right luggage compt door drive motor
Right quarter window motor
Rmr+
Rmr-
Ror
Rore
Rpr
Rpr3
Rprb
S18
S20
Sgnd
Sig
Sliding roof control ecu (left rear of luggage compt)
Swe

POWER WINDOWS

Power Window Wiring Diagram for Lexus SC 430 2002

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List of elements for Power Window Wiring Diagram for Lexus SC 430 2002:

(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 (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 (right side of eng compt)
F11
F17
Gnd
Hot at all times
Hot in accy or on
Hot in on or start
I15
I21
J/c 13 (behind right side of dash)
J/c 18
J/c 9, j/c 10 (behind top left end of dash)
J10
J9 f
Kul
Left door courtesy switch
Left door key lock & unlock switch
Left power window motor
Lmt
Luggage room j/b (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
Pasenger side j/b (behind right kick panel)
Passenger door ecu (in right door)
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 (center of roof header)
Wls1
Wlsw

RADIO

Radio Wiring Diagrams (1 of 2) for Lexus SC 430 2002

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List of elements for Radio Wiring Diagrams (1 of 2) for Lexus SC 430 2002:

Acc
Atx+
Atx-
Audio door control switch
Aui+
Aui-
Auo+
Auo_
B13
Center j/b (behind right center of dash)
Combination meter
D20
Dome fuse 7.5a
Dos1
E10
Engine room no.1 r/b (right side of engine compt behind strut tower)
F14
Gateway ecu (behind right side of dash)
Gnd
Gtx+
Gtx-
Hot at all times
Hot in accy or on
Ig (left side of steering column)
Ih (under steering column)
Ij (right dash brace)
Instrument panel j/b (behind upper center of dash)
J/c 12 (behind right side of dash)
J/c 9 & j/10 (behind top left end of dash)
J10
Left door speaker (squawker and tweeter)
Multi display
Mut2
Mute
Navigation ecu (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-
Tx1+
Tx1-
Txs+
Txs-
W/ navi
W/ phone
W/o navi
W/o phone

Radio Wiring Diagrams (2 of 2) for Lexus SC 430 2002

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List of elements for Radio Wiring Diagrams (2 of 2) for Lexus SC 430 2002:

Acc
Bo (near stereo component amplifier)
Fl+
Fl-
Fr+
Fr-
Gnd
J/c 15 (in luggage compt below right side of package tray)
Left front woofer
Left rear speaker
Mute
N-mu
Pnk
Rear woofer
Red
Right door speaker (squaker and tweeter)
Right front woofer
Right rear speaker
Rl+
Rl-
Rr+
Rr-
S13
S14
S22
S23
Sp+
Sp-
Spd
Spi+
Spi-
Stereo component amplifier (under rear seat)
T16
T18
T19
T20
T21
Telephone computer (center rear of luggage compt)
Tfr+
Tfr-
Tmut
Tx+
Tx-
Txd+
Txd-
W/ cellular phone
W/navi w/ phone
W/navi w/o phone
W/o cellular phone
Wf+
Wf-
Wfl-
Wfr-

SHIFT INTERLOCKS

Shift Interlock Wiring Diagram for Lexus SC 430 2002

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List of elements for Shift Interlock Wiring Diagram for Lexus SC 430 2002:

Acc
B10
Center j/b (right center of dash)
D16
D20
Driver side j/b (left kick panel)
Driver side j/b ecu (left end of dash)
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 (upper center of dash)
Kls+
P-ig fuse 10a
Passenger side j/b (right kick panel)
Radio 2 fuse 10a
Shift lock control ecu (under center console, near selector lever)
Stop fuse 5a
Stop light switch (top of brake pedal bracket)
Stp
Stpi
Unlock warning switch & key interlock solenoid (left side of dash)

STARTING/CHARGING

Charging Wiring Diagram for Lexus SC 430 2002

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List of elements for Charging Wiring Diagram for Lexus SC 430 2002:

Alt fusible link 120a
Alt-s fuse 5a
Battery
Battery ground
Charge
Combination meter
Computer data lines system
D-ig fuse 10a
Driver side j/b (behind left kick panel)
Engine control module (on left side of engine compartment in ecu box)
Engine room no.1 r/b (on right side of eng compt, behind strut tower)
F15
Generator
Hot in on or start
Ig+
Ih (under steering column)
J/c 4 & 5 (in ecu box)
Mpx+
Mpx1
Mpx2
Nca
Passenger side j/b (behind right kick panel)
Red

Starting Wiring Diagram for Lexus SC 430 2002

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List of elements for Starting Wiring Diagram for Lexus SC 430 2002:

Acc
Am2
Am2 fuse 30a
Battery
Ed (left front cylinder)
Engine control module (at left side of engine compt, in ecu box)
Engine room no. 2 r/b (left side of eng compt, behind strut tower)
Ignition switch
Lock
Nca
Park/neutral position switch (on transmission)
Short pin no. 1
Short pin no. 2
St2
Start
Starter
Starter fuse 7.5a
Starter relay

SUPPLEMENTAL RESTRAINTS

Supplemental Restraint Wiring Diagram (1 of 2) for Lexus SC 430 2002

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List of elements for Supplemental Restraint Wiring Diagram (1 of 2) for Lexus SC 430 2002:

(at base of left "b" pillar) left pretensioner
+sl
+sr
-sl
-sr
A20
A21
A22
Air bag sensor assembly (at center center of dash, below radio)
Air bag squib (steering wheel pad)
Dml+
Dml-
Dmr+
Dmr-
Driver side j/b (at left kick panel)
Esl
Esr
Fsr+
Fsr-
Hot in on or start
Ig1
Ig2
Ig2 fuse 7.5a
J/c j18 (right quarter panel)
Late production
Left door side air bag sensor
Left side air bag squib
Mpx-ig fuse 7.5a
Mpx1
Mpx2
P2+
P2-
Passenger side j/b (at right kick panel)
Pl+
Pl-
Pnk
Pr+
Pr-
Rbe+
Right buckle switch & occupant detection sensor (under front 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 Restraint Wiring Diagram (2 of 2) for Lexus SC 430 2002

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List of elements for Supplemental Restraint Wiring Diagram (2 of 2) for Lexus SC 430 2002:

(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 (partial) (behind left side of dash)
Dbkl
Driver side j/b (at 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 compartment, in ecu box)
Engine room 2 r/b (on left front of engine compartment, behind strut tower)
Esl
F13
F15
Front controller
Gateway ecu (behind right side of dash)
Hot in on or start
J/c j20 (under right side of driver's seat)
Junction connector 9 (behind top left end of dash)
Left buckle switch (in left front seat belt buckle)
Left front air bag sensor (on left front of engine compartment)
Left side air bag sensor (behind interior trim, forward of 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 (on right front of engine compartment)
Skid control ecu (behind left side of dash)
Solid state
Srs
Ssl+
Ssl-
Tire pressure monitor receiver
Vupl

TRANSMISSION

A/T Wiring Diagram (1 of 2) for Lexus SC 430 2002

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List of elements for A/T Wiring Diagram (1 of 2) for Lexus SC 430 2002:

(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 2002

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List of elements for A/T Wiring Diagram (2 of 2) for Lexus SC 430 2002:

(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 & sensor (on throttle body)
Thw
Vehicle speed sensor (electronically controlled transmission) (on trans)
Vta
Vta2

TRUNK, TAILGATE, FUEL DOOR

Fuel Door Release for Lexus SC 430 2002

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List of elements for Fuel Door Release for Lexus SC 430 2002:

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

Trunk Release & Pull Down Wiring Diagram for Lexus SC 430 2002

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List of elements for Trunk Release & Pull Down Wiring Diagram for Lexus SC 430 2002:

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