All Wiring Diagrams for Lexus SC 300 1994

AIR CONDITIONING

A/C Wiring Diagram (1 of 2) for Lexus SC 300 1994

List of elements for A/C Wiring Diagram (1 of 2) for Lexus SC 300 1994:

1994 only
1994 vftc c
A/c
A/c control assembly (center of i/p)
A/c dual pressure switch (right side of engine compt)
A/c in
A/c solar sensor (right side of i/p)
Acc
Air inlet control servo motor (center of i/p)
Air mix control servo motor (center of i/p)
Air vent mode control servo motor (center of i/p)
Blr
Check connector
Conn "a"
Conn "b"
Conn "c"
Cool
Data link connector
Defogger system
Din
Dout
Engine control module (center of i/p)
G101 (right front fender)
G203 (left kick panel)
Ig+
Ign
Igniter (left side of engine compt)
Instrument cluster system (trip meter)
Interior lights system (rheostat)
J/b 3 (behind center of i/p)
Lcki
Mdef
Mface
Mfrs
Mgc
Mrec
Pnk
Psw
Rdfgr
Red
Reost
Saut
Set1
Set2
Set3
Set4
Set5
Spd
Tail
Tam
Telephone tranceiver & speaker relay (left rear of trunk)
Telin
Tpi
Tpm

A/C Wiring Diagram (2 of 2) for Lexus SC 300 1994

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List of elements for A/C Wiring Diagram (2 of 2) for Lexus SC 300 1994:

(sc400)
1994 vftc c
A/c ambient temperature sensor (right front of engine compt)
A/c control switch & radio switch
A/c evaporator temperature sensor (center of i/p)
A/c lock sensor (left front of engine)
A/c magnetic clutch (left side of engine)
A/c magnetic clutch relay
A/c power transistor (center of i/p)
A/c room temperature sensor (center of i/p)
A/c single pressure switch (right side of engine compt)
Acmg
Blower motor (center of i/p)
Blower resistor (center of i/p)
Cig fuse 15a
Cooling fan ecu (center of i/p)
Dome fuse 10a
Ecu-ig fuse 15a
Engine control module (center of i/p)
Engine controls system
Engine coolant temperature sensor (center of i/p)
Engine coolant temperature sensor (left front of engine compt)
G100 (front left fender)
G101 (right front fender)
G203 (right kick panel)
Heater fuse 10a
Heater fusible link 60a
Heater relay
Hot at all times
Hot at all times r/b 2 (left side of engine compt)
Hot in accy, run or start
Hot in run or start
Hot w/ lights in tail or head
J/b 1 (left kick panel)
J/b 3 (behind center of i/p)
Noise filter (center of i/p)
Panel fuse 7.5a
R/b 2 (left side of engine compt)
Radio temp control switch
Red
Solenoid valve (left front of engine) (sc400)
Vsv (right rear of engine compt)

ANTI-LOCK BRAKES

Anti-lock Brake Wiring Diagrams, with Traction Control for Lexus SC 300 1994

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List of elements for Anti-lock Brake Wiring Diagrams, with Traction Control for Lexus SC 300 1994:

(r/b 2) (left side of engine compartment)
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
Abs 1 fusible link 60a
Abs actuator relay (r/b 6)
Abs and traction ecu (behind glove box)
Abs motor relay (r/b 6)
Abso
Alt
Ast
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
Bat
D/g
Data link connector 1 (top left side of engine)
Data link connector 2 (right front side of engine compt)
Dome fuse 10a
E20
E3 j/b 3 (behind i/p)
Ecu-ig fuse 15a
Fl+
Fl-
Fr+
Fr-
Fss
Fuse box (r/b 2)
G100 (front side of left fender)
G203 (right kick panel)
Generator
Gnd
Gnd1
Gnd2
H12
Hot at all times
Hot in run
J/b 1 (left kick panel)
Lbl
Left front abs speed sensor (behind left front wheel disk)
Left rear abs speed sensor (behind left rear wheel disk)
Mtt
Nca
Noise filter (behind i/p)
Pkb
Pnk
Red
Right front abs speed sensor (behind right front wheel disk)
Right rear abs speed sensor (behind right rear wheel disk)
Rl+
Rl-
Rr+
Rr-
Rss
Sac
Sfl
Sfr
Smc
Src
Srl
Srr
Stop fuse 15a
Stop light switch (mounted on brake pedal support)
Stp
Tmr
Traction brake actuator (left side of engine compartment)
Tsr

Anti-lock Brake Wiring Diagrams, with Traction Control (2 of 1) for Lexus SC 300 1994

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List of elements for Anti-lock Brake Wiring Diagrams, with Traction Control (2 of 1) for Lexus SC 300 1994:

(behind
(sc300)
(sc400)
1b f5
A/t indicator switch
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A37
A38
A39
A40
Abs
Abs 2 fusible link 40a
Abs actuator (right side of engine compartment)
Abs and traction ecu (behind glove box)
Abso
Acm
B10
B11
B12
B13
B14
B15
B16
B31
B63
B64
Bat
Bcm
Brake fluid level switch (left rear of engine compartment)
Brc
Brfa
Brp
C10
C11
C12
C13
C14
C15
C16
Combination meter
Csw
D13
E11
Engine control module (behind console)
Flo
Fro
Fuse box (r/b 2)
G101 (front side of right fender)
G114 (rear of left cylinder head) g117 (rear of right cylinder head)
G200 (left kick panel)
G203 (right kick panel)
Gauge fuse 10a
Gnd
H14
Hot at all times
Hot in run
I/p)
Idl1
Idl2
Ig1
Ind
J/b 1 (left kick panel)
J/b 1 (left side of steering column)
J/b 3
J/b 3 (behind i/p)
Main traction brake relay (r/b 6)
Nca
Neo
Parking brake switch (on parking brake support)
Pkb
Pnk
Pnk b6
Rd/wt
Red
Relay box 7 (r/b 2) side of j/b #1)
Rlo
Rro
Sensor
Stp
Sub throttle actuator (top right rear of engine)
Sub throttle position sensor
Thfa
Throttle position
Tr2
Tr5
Trac
Trac fuse 7.5a
Trac off
Traction control ecu (behind glove box)
Traction cut/ seat heater switch
Traction motor relay (r/b 6)
Traction pump and motor (left rear of engine compt)
Trco
Vsh
Vth
Vto2

Anti-lock Brake Wiring Diagrams, without Traction Control for Lexus SC 300 1994

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List of elements for Anti-lock Brake Wiring Diagrams, without Traction Control for Lexus SC 300 1994:

Abs 1 fusible link 60a
Abs actuator (right front of eng compt)
Abs actuator relay (r/b 6)
Abs ecu (left side of i/p)
Abs indicator
Abs motor relay (r/b 6)
Ast
B15
Bat
Combination meter
D/g
Data link connector 1 (top center of engine)
Data link connector 2 (behind left side of i/p)
Dome fuse 10a
Ecu-ig fuse 15a
Fl+
Fl-
Fr+
Fr-
Fss
Fuse box (in r/b 2)
G100 (front side of left fender)
G101 (front side of right fender)
G203 (right kick panel)
Gauge fuse 10a
Gnd1
Gnd2
H12
H13
Hot at all times
Hot in run
J/b 1 (left kick panel)
J/b 3 (behind i/p)
Left front abs speed sensor (behind left front wheel disk)
Left rear abs speed sensor (behind left rear wheel disk)
Nca
Noise filter (behind i/p)
Parking brake switch (on parking brake support)
Pkb
Pnk
R/b 2 (left side of engine compartment)
Red
Ree
Right front abs speed sensor (behind right front wheel disk)
Right rear abs speed sensor (behind right rear wheel disk)
Rl+
Rl-
Rr+
Rr-
Sfl
Sfr
Srr
Stop fuse 15a
Stop light switch (mounted on brake pedal support)
Stp

COMPUTER DATA LINES

Computer Data Lines for Lexus SC 300 1994

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List of elements for Computer Data Lines for Lexus SC 300 1994:

2b a7
A/c control assembly
A10
A11
A17
A19
A20
A31
A32
Abs actuator relay (r/b 6)
Abs and traction ecu (behind glove box)
Abs ecu (behind glove box)
B10
B20
B21
B28
B29
B47
B48
C 1995 vftc
C17
Center airbag sensor assembly (behind center console)
Combination meter
Cruise control ecu (behind left side of i/p)
D11
Data link connector 1 (top center of engine)
Data link connector 2 (behind left side of i/p)
E10
E17
Efi main relay (r/b 2)
Engine control module (behind console)
Front main oxygen sensor (top right front of engine)
Fuel pump
Fuel pump ecu (right rear of trunk)
G110 (rear side of intake manifold)
G117 (rear side of right cylinder head)
H12
H13
Idle air control valve (top center of engine)
Igniter 1 (right side of engine compt)
J/b 1 (left kick panel)
J/b 3 (behind i/p)
Pnk/
Rear main no.2 oxygen sensor (left rear of engine compartment)
Sub heated oxygen sensor (center console) (california)
Traction control ecu (behind glove box)
Vsv egr valve (rear center of engine) (federal)
Vsv evap control valve (left rear of engine compartment)
Vsv idle air control valve (top center of engine compartment)
W/ traction control
W/o traction control

CRUISE CONTROL

Cruise Control Wiring Diagram for Lexus SC 300 1994

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List of elements for Cruise Control Wiring Diagram for Lexus SC 300 1994:

1995 vftc c
A/d
A/t
A11
A12
A20
B64
Batt
C10
C13
C14
C15
Cancel
Ccs
Clutch start switch (left side of i/p)
Cms
Combination meter
Cruise control actuator (front of right strut tower)
Cruise control clutch switch (left side of i/p)
Cruise control ecu (below combi- nation meter)
Cruise control indicator
Cruise control switch (combination switch)
D13
Data link connector 1 (top left side of eng)
Data link connector 2 (left side of i/p)
Dome fuse 10a
E12
Ect
Ecu-ig fuse 15a
Electronic control transmission solenoid
Engine control module (right side of i/p)
Exterior lights system (stop light)
G101 (front side of right fender)
G206 (left instrument panel brace)
G302 (under left ashtray)
Gauge fuse 10a
Gnd
H10
H12
Hot at all times
Hot in start
Hot in start or on
I10
Idl
Idl1
J/b 1 (left kick panel)
J/b 3 (behind combination meter)
K12
M/t
Magnetic clutch
Main
N & c
Noise filter (below combi- nation meter)
Od1
Park/neutral position switch
Parking brake handle)
Parking brake switch (bottom of
Pkb
Pnk
R/b 2 (left side of eng compt)
Red
Resume/ accel
Sc400 only
Set/ coast
Sp1
Spd
Speed meter
St fuse 7.5a
Starter relay
Stop fuse 15a
Stop light switch (on brake pedal support)
Stp+
Stp-
Throttle position sensor "idl"
Trip switch and theft deterrent indicator light
Vehicle speed sensor 1 (on trans- mission)
Vr1
Vr2
Vr3

DEFOGGERS

Defogger Wiring Diagram for Lexus SC 300 1994

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List of elements for Defogger Wiring Diagram for Lexus SC 300 1994:

50a
A10
A7 b4
A8 b5
Choke coil (left rear of trunk)
D10
Defog fuse
Defogger relay
E18
G100 (front side of left fender)
G200 (left kick panel)
G203 (right kick panel)
G302 (below right "b" pillar)
Gnd
Heater
Hot at all times
Htr fuse 10a
J/b 1 (left kick panel)
J/b 1 (left side of dash)
J/b 3 (behind combination meter)
Left remote control mirror
Mir-htr fuse 10a
Noise filter (left side of engine compt)
R/b 2 (left side of engine compartment)
R/b 2 (left side of engine compt)
Rdefr
Rear window defogger
Rear window defogger switch (a/c control assembly)
Right remote control mirror
W/ mem seat w/0 mem seat

ELECTRONIC POWER STEERING

Electronic Power Steering Wiring Diagram for Lexus SC 300 1994

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List of elements for Electronic Power Steering Wiring Diagram for Lexus SC 300 1994:

(under left ashtray)
C 1995 vftc
Combination meter
D13
E12
Ecu-ig fuse 15a
G203 (right kick panel)
G302
Gauge fuse 10a
H12
Hot in run
J/b 1 (left kick panel)
J/b 3 (behind center of i/p)
Pnk
Pps ecu (behind right side of i/p)
Pps solenoid (left front of engine compartment)
Red
Sol+
Sol-
Spd
Vehicle speed sensor no. 1 (on transmission)

ENGINE PERFORMANCE

3.0L

3.0L, Engine Performance Wiring Diagrams (1 of 3) for Lexus SC 300 1994

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List of elements for 3.0L, Engine Performance Wiring Diagrams (1 of 3) for Lexus SC 300 1994:

calif. only
center of i/p)
#10
#20
#30
#40
#50
#60
(behind
(closed in park and neutral)
(front side of left fender)
(left
(left engine
(left kick
(on transmission)
(rear side of intake manifold)
(rear side of right cylinder head)
(right
(tachometer)
A/t
A/t only
Acc
Acis
Am1
Am2
Calif. only
Cluster)
Clutch start
Coil
Compt)
Distributor (top right of engine)
Door lock ecu
E01
E02
E11
Efi fuse 30a
Efi main relay
Egr
Electronic controlled transmission solenoid (on
Engine control module (behind
Engine)
Evap
Front of
Fuse block
G100
G110
G117
Hot at all times
Idl1
Idl2
Idle air control valve (top center of engine)
Ig2
Igf
Ign fuse 7.5a
Igniter (left side of engine compt)
Ignition
Igt
Injector #1
Injector #2
Injector #3
Injector #4
Injector #5
Injector #6
Instrument
Instrument cluster system
Isc1
Isc2
Isc3
Isc4
J/b 1
Knk1
Knk2
Knock sensor 1 (left front of engine)
Knock sensor 2 (left rear of engine)
Lock
Lock-up
M/t
Main fuse 60a
Noise filter (right front of engine compt)
Nsw
Ox1
Ox2
Ox3
Panel)
Park/neutral position switch (on transmission)
Pnk
R/b 2 engine compt)
Red
Slry
Sp2
Sp2-
St fuse 7.5a
St1
Sta
Start
Starter relay
Starting system
Switch
Switch (on clutch pedal bracket)
Tach
Tha
Theft deterrent &
Thg
Thw
Transmission)
Vehicle speed sensor #2
Vf1
Vf2
Vta1
Vta2
W/traction control

3.0L, Engine Performance Wiring Diagrams (2 of 3) for Lexus SC 300 1994

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List of elements for 3.0L, Engine Performance Wiring Diagrams (2 of 3) for Lexus SC 300 1994:

(a/t only)
(behind
(except
(left front
(on transmission)
(right center of engine)
(top center of engine)
(under
(under left center pillar)
A/t indicator lights
A/t only
A10
A13
A14
A15
Anti-lock brakes system (traction ecu)
Ashtray)
C16
C17
Calif.)
Coolant
D13
E12
Egr gas
Egr valve (left side of engine)
Electronic controlled transmission pattern select switch (on console)
Engine
Engine compt)
Evap valve (left rear of engine compt)
Fpc
Fuel pump
Fuel pump ecu (under console)
G302
G308
Gauge fuse 10a
H12
Hot in on or start
Instrument cluster
Intake air control valve (left rear of engine compt)
Interior
Interior lights system
J/b 1 (left
J/b 3 center of i/p)
Kick panel)
Left
Lights system
Malf. ind. lamp
Norm
O/d off ind.
Of engine)
Out
Park/ neutral position switch (on trans- mission) (a/t only)
Pnk
Power ind.
Pwr
Red
Sensor
Sensor (center rear of
Solid state
Speedometer
Sub throttle position sensor
Temperature
Throttle position sensor
Vehicle speed sensor
Vss
W/ traction control

3.0L, Engine Performance Wiring Diagrams (3 of 3) for Lexus SC 300 1994

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List of elements for 3.0L, Engine Performance Wiring Diagrams (3 of 3) for Lexus SC 300 1994:

(behind
(bottom center of vehicle)
(left
(rear side
(right front of engine compt)
(traction
+b1
A/c
A/t only
Acmg
Air
Anti-lock brakes system
Batt
Calif. only
Conditioning
Cruise control system
D10
Data link connector 1 (left side of engine compt)
Data link connector 2 (behind left side of i/p)
Defoggers system
Diode
Ecu)
Els
Engine control module (behind center of i/p)
Exterior lights system
Fpc
G110
G117 (rear side of right cylinder head)
G200
Hot at all times
I10
Igsw
J/b 1 (left
J/b 3 instrument cluster)
Kick
Kick down switch (a/t only)
Kick panel)
M-rel
Main oxygen sensor (front) (right front of engine)
Main oxygen sensor (rear) (right rear of engine)
Neo
Noise filter (below left
O/d main switch (a/t only)
Od1
Od2
Of intake manifold)
Panel
Pnk
Power steering pressure switch (left front of engine)
R/b 4 (left kick panel)
Side of i/p)
Solid state
Sp1
Stop fuse 15a
Stop light switch
Stp
Sub heated oxygen sensor
System
Te1
Te2
Volume air flow meter
Vto1
Vto2

EXTERIOR LIGHTS

Exterior Light Wiring Diagram (1 of 2) for Lexus SC 300 1994

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List of elements for Exterior Light Wiring Diagram (1 of 2) for Lexus SC 300 1994:

(a/t) (m/t)
(usa) (canada)
A9 b2
Am1 fusible link 100a
Automatic light control sensor
B11
Back-up light
Back-up light switch (part of park/ neutral switch)
C10
C16
Combination
Combination meter
D13
Diode
E12
Fuse block (left side of engine compartment)
G200 (left kick panel)
G305 (below right "b" pillar)
G308 (below left "b" pillar)
G407 (center rear of trunk)
Gauge fuse 10a
Head
High mount stop light
Hot at all times
Hot in on or start
I10
Integration relay (left side of i/p)
J/b 1 (left kick panel)
J/b 3 (behind combination meter)
Left rear combination light
License plate light
Light failure sensor (left rear side of luggage compartment)
Noise filter (left side of i/p)
Off
Rear light warning light
Right rear combination light
Spoiler
Stop fuse 15a
Stop light switch (near brake pedal)
Stop lights
Switch
Tail
Tail fuse 15a
Tail- lights
Taillight relay
Turn signal lights
W/ rear spoiler
W/o rear

Exterior Light Wiring Diagram (2 of 2) for Lexus SC 300 1994

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List of elements for Exterior Light Wiring Diagram (2 of 2) for Lexus SC 300 1994:

(behind combination meter)
(usa) (canada)
B16
B17
B23
Combination meter
Combination switch
Cornering
Cornering light relay
D10
E14
E18
E19
G100 (front side of left fender)
G101 (front side of right fender)
G200 (left kick panel)
H11
Haz-horn fuse 25a
Hazard switch
Headlight relay
Hot at all times
Hot in run
Integration relay (left side of i/p)
J/b 1 (left kick panel)
J/b 3
Left
Left cornering light
Left front clearance light
Left front side marker light
Left front turn light
Light
R/b 2 (left side of engine compartment)
R/b 4 (left kick panel)
R/b 5 (left kick panel)
Right
Right cornering light
Right front clearance light
Right front side marker light
Right front turn light
Signal switch
Switch
Turn
Turn fuse 20a
Turn signal flasher
Turn signal indic.

GROUND DISTRIBUTION

Ground Distribution Wiring Diagram (1 of 5) for Lexus SC 300 1994

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List of elements for Ground Distribution Wiring Diagram (1 of 5) for Lexus SC 300 1994:

A/c dual pressure switch
A/c high pressure switch
A11
A20
Abs actuator
Abs actuator relay (in r/b 6)
B69
B79
B80
Brake fluid level switch
C1 w/ tcs w/o tcs
Coolant level warning switch
Cruise control actuator
Data link connector 1
Efi main relay (in r/b 2)
Engine hood courtesy switch
Engine control module
Engine oil level warning switch
G100 (front side of left fender)
G101 (front side of right fender)
G114 (left rear side of cylinder head)
Heater relay
Ignition main relay (in r/b 2)
Knock sensor shields
Left cornering light
Left front clearance light
Left front side marker light
Left front turn signal light
Left low beam headlight
Main heated oxygen sensor (on left bank)
Main heated oxygen sensor shields (on left bank)
Mobile phone
Nca
Noise filter (for defogger system)
Right cornering light
Right front clearance light
Right front side marker light
Right front turn signal light
Right low beam headlight
Sc400 only
Telephone transceiver & speaker relay
Traction ecu
Traction pump & motor
Washer level switch

Ground Distribution Wiring Diagram (2 of 5) for Lexus SC 300 1994

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List of elements for Ground Distribution Wiring Diagram (2 of 5) for Lexus SC 300 1994:

A20
Auto antenna motor & relay
B69
B79
B80
C22
Combinatin meter
Data link connector 1
Data link connector 2
Distributor shield
Driver's power seat control switch
Driver's power seat ecu
Driver's seat heater
Engine control module
Engine oil level warning switch
Fuel pump
Fuel pump ecu
Fuel sender
G110 (rear side of intake manifold)
G117 (right rear side of cylinder head)
G308 (below left "b" pillar)
G407 (center rear of trunk)
Heated oxygen sensor (california)
Knock sensor shields
Left buckle switch
Left rear combination light
License plate light
Light failure sensor
Luggage compartment key unlock switch
Main oxygen sensor 1 shield
Main oxygen sensor 2 shield
Nca
Noise filter
Power steering pressure switch
Right rear combination light
Sc300 only
Sub heated oxygen sensor shield
Traction ecu
Volume air flow
W/ memory seat
W/ memory seat only
W/o memory seat

Ground Distribution Wiring Diagram (3 of 5) for Lexus SC 300 1994

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List of elements for Ground Distribution Wiring Diagram (3 of 5) for Lexus SC 300 1994:

(in r/b 4)
A16
A8 (w/ memory seat) (w/o memory seat)
Canada
Center airbag sensor assembly
Cooling fan ecu
Cruise control ecu
Cruise control switch
D10
Daytime running light relay
Deterrent & door lock ecu
Dimmer switch (combination switch)
E18
From j/b 3 pin a1
G200 (left kick panel)
G206 (left instrument panel brace)
H13
High beam indicator light (combination meter)
Integration relay
J/b 1 (left kick panel)
K12
Key inter- lock solenoid (ignition switch)
Kick down switch
Left door key lock & unlock switch
Left door lock/ unlock motor & door detection position switch
Left high beam headlight
Left power window master switch & door lock control switch
Left remote control mirror
Left vanity light
Light control switch (combination switch)
Moon roof control relay
Moon roof control switch
Moon roof limit switch
Moon roof motor
Personal light
Power main relay
Red
Remote control mirror ecu
Remote control mirror switch
Right high beam headlight
Right vanity light
Sc300
Sc400
Seat heater relay
Theft
Tilt & power telescopic ecu
To grounds g203 & g305
Turn signal switch (combination switch)
Unlock warning switch (ignition switch)
Usa
W/ moon roof
W/o moon roof
Wiper & washer switch (combination switch)
Wiper motor

Ground Distribution Wiring Diagram (4 of 5) for Lexus SC 300 1994

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List of elements for Ground Distribution Wiring Diagram (4 of 5) for Lexus SC 300 1994:

A/c power transistor
A14
A8 (w/ memory seat) (w/o memory seat)
Abs & traction ecu
Abs ecu
B13
B22
Blower resistor
C10
Choke coil
Combination meter
Driver's power seat control switch
Driver's power seat ecu
Driver's power seat ecu shield
Driving position memory & return switch
From ground g206
Front vertical position sensor
Fuel lid opener solenoid
G203 (right kick panel)
G302 (under left ashtray)
G305 (below right "b" pillar)
High mount stop light
Left slide position sensor
Nca
Passenger's power seat control switch
Passenger's power seat ecu
Passenger's seat heater
Pps ecu
Rear vertical position sensor
Reclining position sensor (power seat motor)
Right door key & unlock switch
Right door lock control switch
Right door lock/unlock motor & door detection position switch
Right remote control mirror
Tilt & power telescopic ecu
Traction ecu
W/ tcs only
W/o spoiler w/ spoiler
W/o tcs only
Wireless door lock ecu

Ground Distribution Wiring Diagram (5 of 5) for Lexus SC 300 1994

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List of elements for Ground Distribution Wiring Diagram (5 of 5) for Lexus SC 300 1994:

(m/t) b1 a8 (a/t)
A/c control assembly
A/t indicator light (shift lever)
C22
C23
Camshaft position sensor 1 shield
Camshaft position sensor 2 shield
Cigarette lighter
Combination meter
Combination meter (ep)
Crankshaft position sensor shield
D10
Data link connector 2
G117 (right rear side of cylinder head)
G302 (under right ashtray)
Glove box light switch
H14
H15
Hazard switch
J/b 3 (behind instrument panel)
Luggage compartment door open switch
Main heated oxygen sensor (on right bank)
Main heated oxygen sensor shields (on left bank)
O/d main switch
Radio & player
Radio & player shield
Rheostat
Sc400 only
Seat heater switch
Shift lock ecu
Stereo power amplifier
Sub heated oxygen sensor (on left bank)
Sub heated oxygen sensor (on right bank)
Sub heated oxygen sensor shields (on left bank)
To j/b 1 pin 18e
Traction cut switch & seat heater switch
Volume air flow meter
W/ cd player
W/o cd player
Woofer speaker amplifier

HEADLIGHTS

Headlamps Wiring Diagram, with DRL for Lexus SC 300 1994

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List of elements for Headlamps Wiring Diagram, with DRL for Lexus SC 300 1994:

(left kick panel)
10a
15a
7.5a
A10
A11
A12
A13
Auto
Automatic light control sensor (left side of i/p)
Combination meter
Combination switch
Cty
D10
Daytime running light relay no. 2 (left front of eng compt)
Daytime running light relay no. 3 (left front of eng compt)
Dimmer switch
Diode (in r/b 4)
Dome fuse 10a
Drl fuse
E13
E17
Egu-b fuse
Egu-ig fuse
Exterior lights system (cornering light relay)
Flash
Fuse block
G100 (front side of left fender)
G200
Gauge fuse
Head
Head (lh- lwr) fuse
Head (lh- upr) fuse
Head (rh- lwr) fuse
Head (rh- upr) fuse
Headlight relay
High
High beam indicator
Hot at all times
Hot in start or on
I16
Integration relay
Interior lights system
J/b 1 (left kick panel)
K11
K12
Left door lock/ unlock motor & door detection position switch
Left hi beam head- light
Left low beam head- light
Light control switch
Ma1 fuse 100a
Main fuse 60a
Off
Panel fuse
Parking brake switch (bottom of parking brake handle)
R/b 2 (left side of eng compt)
Red
Right hi beam head- light
Right low beam head- light
Sc300
Sc400
Starting/ charging system
Tail
Taillight relay

Headlamps Wiring Diagram, without DRL for Lexus SC 300 1994

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List of elements for Headlamps Wiring Diagram, without DRL for Lexus SC 300 1994:

(left kick panel)
(or red)
10a
15a
Auto
Automatic light control sensor (left side of i/p)
Combination meter
Combination switch
Cty
D10
Dimmer relay
Dimmer switch
Diode (in r/b 4)
Dome fuse 10a
E13
E17
Egu-b fuse
Egu-ig fuse
Exterior lights system (cornering light relay)
Exterior lights system (taillight relay)
Flash
Fuse block
G100 (front side of left fender)
G200
Gauge fuse
Head
Head (lh) fuse
Head (lh- lwr) fuse
Head (lh- upr) fuse
Head (rh) fuse
Head (rh- lwr) fuse
Head (rh- upr) fuse
Headlight relay
High
High beam indicator
Hot at all times
Hot in start or on
I16
J/b 1 (left kick panel)
K12
Left door lock/ unlock motor & door detection position switch
Left hi beam head- light
Left low beam head- light
Light control switch
Main fuse 60a
Off
R/b 2 (left side of eng compt)
Red
Right hi beam head- light
Right low beam head- light
Sc300
Sc400
Tail

HORN

Horn Wiring Diagram for Lexus SC 300 1994

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List of elements for Horn Wiring Diagram for Lexus SC 300 1994:

Haz-horn fuse 25a
Horn relay
Horn switch (combination switch)
Hot at all times
Left horn
R/b 2 (left side of engine compartment)
R/b 4 (behind left kick panel)
Right horn

INSTRUMENT CLUSTER

Instrument Cluster Wiring Diagram (1 of 2) for Lexus SC 300 1994

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List of elements for Instrument Cluster Wiring Diagram (1 of 2) for Lexus SC 300 1994:

(washer level switch)
1995 vftc c
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
Abs
B11
B14
B15
B16
B17
B18
Brake
Bulb
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C4 c5
Canada
Charge
Check
Cig fuse 7.5a
Circuit
Clock
Combination meter
Coolant level
Cruise
D10
D13
Door
E12
E13
Ecu-b fuse 15a
Engine controls system (ecm)
Exterior lights system (turn signal flasher)
Fuel
Fuel sender (below rear of vehicle on fuel tank)
G110 (right side of intake manifold)
G117 (right rear side of cylinder head)
G302 (under left ashtray)
G308 (below left "b" pillar)
Gauge fuse 10a
H12
H18
Headlights system
High beam
Hot at all times
Hot in acc
Hot in on or start
Hot in run
Hot with taillight relay energized
Ign fuse 7.5a
Igniter (left side of engine compartment)
Illumination
Integration relay
Interior lights system (rheostat)
J/b 1 (left side of i/p)
J/b 3 (behind center of i/p)
J/b 3 (center of i/p)
Left turn
Light failure sensor (left side of trunk)
Low fuel
Malfunction ind.
Meter
O/d off
Oil
Oil level
Oil pressure switch (left front of eng)
Or on
Panel fuse 7.5a
Pnk
Power
Rear lt
Red
Relay
Right turn
Sc300
Sc400
Seat belt
Speed- ometer
Srs
Starting/ charging system (generator)
System (abs ecu)
Tach
Trac
Trac off
Traction ecu (behind right side of i/p)
Trip
Vehicle speed sensor (lower rear of eng)
Washer level
Water temp
Water temperature sender (left side or engine)
Wiper/ washer system

Instrument Cluster Wiring Diagram (2 of 2) for Lexus SC 300 1994

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List of elements for Instrument Cluster Wiring Diagram (2 of 2) for Lexus SC 300 1994:

j/b 3 (center of i/p)
(behind center of i/p)
(below center
(closed in park or neutral)
A/b
A/t indicator light (shift lever)
A/t indicator light switch (part of park/ neutral position switch)
A28
Brake fluid level warning switch (on brake fluid reservoir)
Center airbag sensor assembly (behind center of i/p)
Coolant level warning switch (right front of engine compartment)
Cruise control ecu (center of i/p)
D11
Diode (brake fluid level) (left side of i/p)
Diode (parking brake) (left side of i/p)
Dome fuse 10a
Electronic control transmission pattern select switch (below center of console)
Engine control module (center of i/p)
Engine oil level warning switch (left front of engine)
G101 (front side of right fender)
G114 (left rear side of cylinder head)
G117 (right rear side of cylinder head)
G200 (left kick panel)
Hot at all times
Hot in start
J/b 1 (behind left side of i/p)
J/b 1 (left side kick panel)
J/b 2 (left side of eng compt)
J/b 3
J/b 3 (center of i/p)
Normal
O/d main
Of console)
Oil level
Oil temp
Park/ neutral position switch (lower rear of engine compartment)
Parking brake switch (below console)
Pnk
Power
Red
Reset
Sc300 only
Sc400 only
Set
St fuse 7.5a
Switch
Theft
Theft deterrent system
Trip
Trip switch and theft deterrent indicator light
Usa w/ a/t, w/o driving position memory
Usa w/ m/t and driving position memory or canada
W/ traction control
W/o traction control

INTERIOR LIGHTS

Courtesy Lamps Wiring Diagram for Lexus SC 300 1994

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List of elements for Courtesy Lamps Wiring Diagram for Lexus SC 300 1994:

(canada)
(inside right door)
(usa) a3 b3
10a
A11
B12
Cig/radio fuse 15a
Combination meter
D10
Dome fuse
Door
E11
G200 (left kick panel)
G203 (right kick
Gauge fuse 10a
H10
Hot at all times
Hot in on or acc
Hot in on or start
Ignition key cylinder light
Integration relay
Interior
J/b 1 (left kick panel)
J/b 3 (behind instrument cluster)
Left door courtesy light
Left door lock/unlock motor and door detection position switch (inside left door)
Left vanity light
Luggage compartment light
Luggage compartment light switch (center of rear panel)
Map
Off
Panel)
Personal light
R/b 2 (left side of eng compt)
R/b 4 (left kick panel)
Red
Right door courtesy light
Right door lock/unlock motor and door detection position switch
Right vanity light
Step light
W/ moon roof
W/o moon roof

Instrument Illumination Wiring Diagram for Lexus SC 300 1994

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List of elements for Instrument Illumination Wiring Diagram for Lexus SC 300 1994:

(behind instrument cluster)
* **
* w/ cd player ** w/o cd player
A/c control &
A/c control assembly
A/t indicator light
A10
A12
A17
A2 b10
A9 c5
Am1 fusible link 100a
B10
B11
Canada
Cigarette lighter
Cluster)
Combination meter
Combination switch
E12
Electronic controlled transmission pattern select switch
Fuse block (in r/b 2)
G200 (left kick panel)
Gauge fuse 10a
Glove box light
Glove box light switch
H10
Hazard switch
Head
Hot at all times
Hot in run
Illumination
Indicator
Integration relay
Integration relay (left side of i/p)
J/b 1 (left kick panel)
J/b 3
J/b 3 (behind instrument
J/b 3 (behind instrument cluster)
K11
Off
Panel fuse 7.5a
Radio and player
Radio switch
Rheostat
Solid state
Tail
Taillight relay
Traction cut & seat heater switch
Trip switch & theft deterrent
Usa

MEMORY SYSTEMS

Memory Mirrors Wiring Diagram for Lexus SC 300 1994

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List of elements for Memory Mirrors Wiring Diagram for Lexus SC 300 1994:

A10
A11
A12
A13
A14
A15
A16
Acc
Defogger system
Down
Driver's power seat ecu (under driver's seat)
Driver's power seat ecu shield
E10
Ecu-b fuse 15a
G206 (left instrument panel brace)
G302 (under left ashtray)
Gnd
Hot at all times
Hot in acc or on
Hsrl
Hsrr
J/b 1 (left kick panel)
Left
Left remote control mirror
Left/ right motor
M+l
M+r
Mhl
Mhr
Mvl
Mvr
Nca
Operation switch
Rad 2 fuse 7.5a
Remote control mirror ecu (center of dash)
Remote control mirror switch
Right
Right remote control mirror
Select switch
Swb
Swe
Swlh
Swlv
Swrh
Swrv
Tilt & power telescopic ecu (left side of dash)
Up/ down motor
Vsrl
Vsrr

Memory Power Tilt & Power Telescopic Wiring Diagram for Lexus SC 300 1994

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List of elements for Memory Power Tilt & Power Telescopic Wiring Diagram for Lexus SC 300 1994:

(left kick panel)
(left side of dash)
10a
A/t
A10
A11
A12
Asw
Auto sw
B10
B11
B12
B13
B14
B15
B16
B17
B18
D10
Dome fuse
Door detection position switch
Driver's power seat ecu (under driver's seat)
Driver's power seat ecu shield
Driving position memory and return switch (left side of dash)
Dsw
Ecu-ig fuse 15a
Ecu. b
Ecue
G200
G302 (under left ashtray)
Gauge fuse 10a
Gnd
H10
H12
H13
H15
Hot at all times
Hot in start or on
I16
J/b 1 (left kick panel)
K13
Left door lock/ unlock motor &
M/t
Manual sw
Mry
Msw
N0. 1
N0. 2
Nca
Park/neutral position switch (on transmission)
Parking brake switch (bottom of parking brake handle)
Pnk
Power fuse 30a
R/b 2 (left side of eng compt)
Red
Remote control mirror ecu (center of dash)
Set
Telesco long
Telesco short
Telescopic control motor
Telescopic position sensor
Tem+
Tem-
Tes
Tilt & power telescopic ecu (left side of dash)
Tilt and power telescopic unit (combination switch)
Tilt control motor
Tilt down
Tilt position sensor
Tilt up
Tim+
Tim-
Tis
U.w. sw
Unlock warning switch (ignition switch)

Memory Seat Wiring Diagram (1 of 2) for Lexus SC 300 1994

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List of elements for Memory Seat Wiring Diagram (1 of 2) for Lexus SC 300 1994:

(below left "b" pillar) g308
+b2
A10
A11
A12
A13
A14
A15
A16
B10
B11
B12
B13
B14
B15
B16
B17
B18
C10
Door circuit breaker 30a
Door open detection
Down
Driver's front vertical motor
Driver's power seat control switch
Driver's rear vertical motor
Driver's slide control motor
Driving position memory/ return switch
Dsw
Ecu-ig fuse 15a
Ecue
Fdwn
Front
Front vertical
Frv-
Fup
Fvr+
Gnd
Gnd2
Hot at all times
Hot in run
I10
J/b 1 (left side of dash)
Lumbar support motor (under left seat)
Lumbar support support
Mry
Nca
Noise filter (behind left side of dash)
Park/neutral position switch
Pnk
Power seat ecu (under driver's seat)
Pvcc
Rcl+
Rcl-
Rclf
Rclr
Rdwn
Rear
Reclining
Red
Rrv+
Rrv-
Rup
Set
Sgnd
Shield
Sld+
Sld-
Sldf
Sldr
Slide
Ssfv
Ssrr
Ssrs
Ssrv
Stop
Stop fuse 15a
Stop light switch (on brake support)
Switch
Sysb
Tilt/power telescopic ecu (behind left side of dash)
Vertical rear

Memory Seat Wiring Diagram (2 of 2) for Lexus SC 300 1994

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List of elements for Memory Seat Wiring Diagram (2 of 2) for Lexus SC 300 1994:

Dome fuse 10a
Driver's power seat reclining motor control (under driver's seat)
Front
Front vertical position sensor (under driver's seat)
G302 (under left ashtray)
G305 (below right "b" pillar)
Gnd
H10
Hot at all times
J/b 1 (left side of dash)
Motor (under
Passenger's power seat control switch
Passenger's reclining limit switch (under seat)
Passenger's seat ecu (under passenger's seat)
Passenger's seat slide limit switch (under seat)
Passenger's seat slide motor
Passenger's seat slide position sensor (under seat)
Passenger's seatbelt buckle switch (in buckle)
Passenger's tension reducer solenoid (in right "b" pillar)
Pbcl
Pfsw
Prdc
Pvcc
R/b 2 (left side of engine comp)
Rear
Rear vertical position sensor (under driver's seat)
Reclining
Red
Right seat)
Rrsw
Sgnd
Sld+
Sld-
Sldf
Sldr
Slide
Slide position sensor (under driver's seat)
Slsw
Ssrs
Sysb

PASSIVE RESTRAINTS

Electric Tension Reducer Wiring Diagram for Lexus SC 300 1994

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List of elements for Electric Tension Reducer Wiring Diagram for Lexus SC 300 1994:

C 1995 vftc
Door fuse 30a
Ecu-ig fuse 15a
G305 (below right "b" pillar)
G308 (below left "b" pillar)
Hot at all times
Hot in start or on
J/b 1 (left kick panel)
Left buckle switch (inside driver's seat belt buckle head)
Left tension reducer solenoid (below left "b" pillar)
Passenger's power seat ecu (under passenger's seat)
Right buckle switch (inside passenger's seat belt buckle head)
Right tension reducer solenoid (below right "b" pillar)
Tension reducer diode (left kick panel)

POWER ANTENNA

Power Antenna Wiring Diagram for Lexus SC 300 1994

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List of elements for Power Antenna Wiring Diagram for Lexus SC 300 1994:

20a
7.5a
Acc
Amp+b
Ant+b
Anta
Antb
Auto antenna control relay
Auto antenna motor
Auto antenna motor & relay (left side of trunk)
B10
D10
Down
E10
Ecu-ig fuse 15a
G407 (center rear of trunk)
Gnd
Hot at all times
Hot in acc or on
Hot in start or on
J/b 1 (left kick panel)
R/b 2 (left side of engine compt)
Radio 1 fuse
Radio 2 fuse
Radio and player
Red
Sensor
Sgnd
Sig
Svcc
W/ cd
W/ cd player
W/o cd
W/o cd player

POWER DISTRIBUTION

Power Distribution Wiring Diagram (1 of 6) for Lexus SC 300 1994

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List of elements for Power Distribution Wiring Diagram (1 of 6) for Lexus SC 300 1994:

(canada only)
(sc300 w/o memory)
(sc300) (sc400)
(sc400 only)
(w/ memory)
100a
120a 150a
15a
30a
40a
60a
7.5a
A14
A7 (a/t) (m/t)
Abs actuator relay (in r/b 6)
Abs motor relay (in r/b 6)
Abs n0. 1 fuse
Abs n0. 2 fuse
Acc
Alt fuse
Am1
Am1 fuse
Am2
Am2 fuse
Auto antenna control relay
Auto antenna motor & relay
Battery
D11
E10
Fuse block (in r/b 2)
Generator
Ig1
Ig2
Ignition main relay (r/b 2) (engine control system)
Ignition switch
Igsw fuse
Inj fuse
Integration relay
J/b 1
Lock
Main fuse
Nca
R/b 4
Rad no. 2 fuse
Radio & player
Red
Remote control mirror ecu
Remote control mirror switch
Sc300
Sc400
Seat heater relay
Seat heater switch
St-htr fuse
St1
Start
Stereo power amplifier
To cig fuse in j/b 1
To daytime running light relay no. 2
To ecu-b fuse, in j/b 1
To engine, gauge fuses, in j/b 1 pin j5
To htr & def fuses, in r/b 2
To ign fuse, in j/b 1 pin j3
To radio no. 1, dome fuses, in r/b 2
To st fuse, in j/b 1 pin j6
Traction brake main relay (in r/b 6)
Traction motor relay
W/ cd player
W/o cd player
Woofer speaker amplifier

Power Distribution Wiring Diagram (2 of 6) for Lexus SC 300 1994

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List of elements for Power Distribution Wiring Diagram (2 of 6) for Lexus SC 300 1994:

10a
15a
20a
7.5a
A1 (sc400) (sc300)
A10
A14
A24
A9 (a/t)
Abs & traction ecu
Abs ecu
Abs w/ traction control
Abs w/o traction control
Auto antenna control relay
Auto antenna motor & relay
Automatic light control sensor
B11
B2 (m/t)
Back-up light switch (m/t) park/neutral position switch (a/t)
Combination meter
Cooling fan ecu
Cornering light relay
Cruise control ecu
D13
E12
E17
Ecu-ig fuse
Electronic controlled transmission pattern select switch
Engine fuse
From ignition e switch pin 2
From wiper g
Fuse, in j/b 1
Gauge fuse
Generator
H12
H16
Hazard switch
Integration relay
J/b
J/b 1
K13
Left tension reducer solenoid
Light failure sensor
Mobilephone
Power seat ecu
Pps ecu
Right tension reducer solenoid
Shift lock ecu
Telephone transceiver
Telephone transceiver & speaker relay
Theft deterrent & door lock ecu
Tilt & power telescopic ecu
To ecu-ig fuse, in j/b 1
To htr fuse, in j/b 1
Traction ecu
Turn fuse
Vehicle speed sensor 1
Washer motor
Wiper fuse
Wiper motor
Wiper/ washer switch (comb. sw)

Power Distribution Wiring Diagram (3 of 6) for Lexus SC 300 1994

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List of elements for Power Distribution Wiring Diagram (3 of 6) for Lexus SC 300 1994:

i3
10a
15a
30a
7.5a
A/c magnetic clutch relay
A/c noise filter (for a/c system)
A/t
A11
A12
A14
A15
Automatic light control sensor
B76
C16
Clutch start switch
Conbination meter
Cruise control ecu
Defogger relay
Diode
Door fuse
Driver power seat control switch
Driver power seat ecu
E13
Ecu-b fuse
Engine control module
Exterior lights system
From door fuse, in j/b 1
From ecu-ig fuse, in h
From ignition f switch pin 1
From j am1 fuse
Fuel lid opener switch
H15
Heater relay
Htr fuse
I10
Integration relay
Interior lights system (instrument illumination circuit)
J/b 1
M/t
Noise filter
Panel fuse
Park/neutral position switch
Passenger power seat control switch
Passenger power seat ecu
Power main relay (power window) system)
Pwr fuse
R/b 2
R/b 4
Remote control mirror ecu
Srs
St fuse
Stop fuse
Stop light switch
Tail fuse
Taillight relay
Theft deterrent & door lock ecu
Tilt & power telescopic ecu
To taillight relay, in j/b 1
Vsv (for water valve)

Power Distribution Wiring Diagram (4 of 6) for Lexus SC 300 1994

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List of elements for Power Distribution Wiring Diagram (4 of 6) for Lexus SC 300 1994:

(cd player only)
10a
20a
25a
A/c control assembly
A11
Abs ecu or abs & traction ecu
Auto antenna control relay
Auto antenna motor & relay
B10
B18
B20
B21
B22 (w/o tcs) (w/ tcs)
C11
C15
Combination meter
Cruise control ecu
Day/night shift switch
Dome fuse
E11
From main fuse, in b fuse block pin 7
H10
Haz-horn fuse
Hazard switch
Horn relay (in r/b 4)
Ignition key cylinder light
Integration relay
J/b 1
J/b 3
Left door courtesy light
Left vanity light
Luggage compartment light
Moon roof control relay
Nakamichi
Passenger power seat ecu
Personal light
Pioneer
R/b 2
Radio & player
Radio no. 1 fuse
Red
Right door courtesy light
Right vanity light
Step light
Stereo power amplifier
Theft deterrent & door lock ecu
Theft deterrent horn
Tilt & power telescopic ecu
To efi fuse, in r/b 2
Traction ecu
Wireless door lock main switch
Woofer speaker amplifier

Power Distribution Wiring Diagram (5 of 6) for Lexus SC 300 1994

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List of elements for Power Distribution Wiring Diagram (5 of 6) for Lexus SC 300 1994:

(usa w/ sc400)
(w/ memory seat) (w/o memory seat)
10a
15a
30a
50a
60a
7.5a
A15
A33
A7 b4
Alt sensing fuse
Choke coil
Daytime running light relay 2 (canada only)
Def fuse
Defogger relay
Dimmer relay
Drl fuse (canada)
Efi fuse
Efi main relay
Engine control module
From alt fuse, in fuse block pin 3
From haz- horn fuse, in 2/b 2
From tel fuse, in r/b 2
Generator
Head (lh)
Head (lh-lwr) (canada w/ sc300) fuse
Head (lh-upr) fuse
Head (rh)
Head (rh-lwr) (canada w/ sc300) fuse
Head (rh-upr) fuse
Headlight relay
Headlights system
Headlights system (canada)
Heater relay (in r/b 2)
Htr fuse
J/b 1
Left mirror heater
Mir-htr fuse
Noise filter (for defogger system)
R/b 2
Red
Right mirror heater
Starter relay
Starting/ charging system
Tel fuse
Telephone transceiver
Telephone transceiver & speaker relay
To headlight relay, in r/b 2
Trac fuse
Traction ecu

Power Distribution Wiring Diagram (6 of 6) for Lexus SC 300 1994

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List of elements for Power Distribution Wiring Diagram (6 of 6) for Lexus SC 300 1994:

(sc400 0nly)
15a
7.5a
A/c control assembly
A14
A31
A32
C15
Center airbag sensor assembly
Cig fuse
Cigarette lighter
Combination meter
Data link connector 1
Efi main relay (in r/b 2)
Engine control module
From ignition switch, pin 6
From rad no. 2 fuse, in j/b 1
Fuel pump ecu
G200 (left kick panel)
Heated oxygen sensor (california only)
I14
Idle air control valve
Ign fuse
Igniter
Ignition coil
Ignition main relay (in r/b 2)
Injector no. 1
Injector no. 2
Injector no. 3
Injector no. 4
Injector no. 5
Injector no. 6
J/b 3
Noise filter (for ignition system)
R/b 2
Sc300 only
Shift lock ecu
Short connector
Theft deterrent & door lock ecu
Trip switch & theft deterrent indicator light
Vsv (for egr) (except california)
Vsv (for evap) (except california)
Vsv (for intake control valve)

POWER MIRRORS

Photochromic Mirror Wiring Diagram for Lexus SC 300 1994

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List of elements for Photochromic Mirror Wiring Diagram for Lexus SC 300 1994:

Day/night shift switch (rear view mirror)
Dome fuse 10a
G200 (left kick panel)
H13
Hot at all times
I15
Interior lights system
J/b 1 (left kick panel)
R/b 2 (left side of engine compartment)
Red
Unlock warning switch (ignition switch)

Power Mirror Wiring Diagram for Lexus SC 300 1994

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List of elements for Power Mirror Wiring Diagram for Lexus SC 300 1994:

(left kick panel)
D10
Defogger system
Down
G200
Hot in acc or on
J/b 1 (left kick panel)
Left
Left remote mirror
Left/ right
Left/ up
Operation
Radio 2 fuse 7.5a
Remote control mirror switch
Right
Right remote mirror
Right/ down
Select switch
Switch
Up/ down

POWER SEATS

Power Seat Wiring Diagrams for Lexus SC 300 1994

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List of elements for Power Seat Wiring Diagrams for Lexus SC 300 1994:

A/t
Door fuse 30a
Down
Driver's front vertical motor
Driver's lumbar support motor
Driver's power seat control switch
Driver's rear vertical motor
Driver's reclining motor
Driver's seat heater
Driver's slide motor
Front
Front vertical
G202 (left side of dash)
G300 (under left front seat)
G301 (under right front seat)
Hot at all times
Hot in run or start
J/b 1 (left kick panel)
J/b 3 (center of dash)
Left
Lumbar support
M/t
Passenger's seat heater
Passengers's seat heater
Rear
Rear vertical
Reclining
Relay bock 4 (left kick panel)
Right
Seat heater switch
Seat htr fuse 15a
Slide

POWER TOP/SUNROOF

Power Top/Sunroof Wiring Diagrams for Lexus SC 300 1994

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List of elements for Power Top/Sunroof Wiring Diagrams for Lexus SC 300 1994:

(center front of roof)
(left kick panel)
10a
15a
30a
A16
Close
Cls
Dome fuse
Down
Dwn
Ecu-ig fuse
G200
Gnd
Hot at all times
Hot in start or on
Is1
Is2
J/b 1 (left kick panel)
K13
Moon roof control relay (center front of roof)
Moon roof control switch
Moon roof motor
Moon roof motor & limit switch (center front of roof)
Mtr+
Mtr-
No. 1
No. 2
Open
Opn
Pnk
Power fuse
Power main relay
R/b 2 (left side of eng compt)
Red
Theft deterrent & door lock ecu (left side of i/p)

POWER WINDOWS

Power Window Wiring Diagram for Lexus SC 300 1994

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List of elements for Power Window Wiring Diagram for Lexus SC 300 1994:

(left kick panel)
A12
A13
A16
A20
Auto
Auto down module
D10
Dome fuse 10a
Door fusible link 30a
Down
Ecu-ig fuse 15a
G200 (left kick panel)
G203 (right kick panel)
H10
Hot at all times
Hot in on or start
I16
J/b 1
J/b 1 (left kick panel)
K13
Left door open detection switch
Left front
Left power window motor
Lock switch
Power fusible link 30a
Power main relay
Power window master switch
R/b 2 (left side of engine compartment)
Red
Right door open detection switch
Right front
Right power window control switch
Right power window motor
Theft deterrent ecu (above left kick panel)

RADIO

Base Radio, without CD Changer for Lexus SC 300 1994

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List of elements for Base Radio, without CD Changer for Lexus SC 300 1994:

(floor 3 harness, under rear seat) b19
(under right ashtray) g302
A/c control switch & radio switch
A10
A12
Acc
Amp
Ant
Anta
Antb
Aud+
Aud-
Auto antenna motor & relay (on antenna motor, on left side of luggage compartment)
B12
B16 (floor 3 harness, under center console)
C10
E10
Ecu-ig fuse 15a
Engine compartment fuse/relay block (on left front of engine compartment, behind battery)
Fl+
Fl-
Fr+
Fr-
Hot at all times
Hot in acc or on
Hot in on or start
I31 (console box harness, under front end of center console)
Illumination
Interior lights system
Left front door speaker
Left rear speaker
Mute
Passenger compartment fuse/relay block (behind left kick panel)
Pnk
Pwr
Radio & player
Radio 1 fuse 20a
Radio 2 fuse 7.5a
Red
Right front door speaker
Right rear speaker
Rl+
Rl-
Rr+
Rr-
Ru+
Ru-
Sgnd
Shield
Short connector (on left side of luggage compartment)
Sp+
Sp-
Speaker relay
Telephone transceiver
Telephone transceiver & speaker relay (on left side of luggage compartment)
Tlmt
Vol+
Volc
W/ telephone
W/o telephone
W/telephone
Woofer speaker (right side of rear shelf)
Woofer speaker amplifier
Wp+
Wp-

with CD Changer, Nakamichi for Lexus SC 300 1994

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List of elements for with CD Changer, Nakamichi for Lexus SC 300 1994:

(console box harness, under front end of center console) i31
(floor 3 harness, right front of luggage compartment) b24
(floor 3 harness, under center console)
(floor 3 harness, under rear seat) b19
(under right ashtray) g302
A/c control switch & radio switch
A10
A11
A12
A13
A14
A15
Acc
Amp
Ant
Anta
Antb
Aud+
Aud-
Automatic cd changer
B10
B12
B16
B16 (floor 3 harness, under center console)
B19 (floor 3 harness, under rear seat)
B24 (floor 3 harness, right front of luggage compartment)
B25 (floor 3 harness, right front of luggage compartment)
Beep
Cd player
Cdl+
Cdl-
Cdr+
Cdr-
D10
D11
D12
E10
Engine compartment fuse/relay block (on left front of engine compartment, behind battery)
Fl+
Fl-
Fr+
Fr-
Front end of center console) i31
Gnd
Hot at all times
Hot in acc or on
I30 (console box harness, under front end of center console)
Illumination
Interior lights system
Left front door speaker
Left rear speaker
Luggage compartment light switch
Mute
Passenger compartment fuse/relay block (behind left kick panel)
Pnk
Power antenna system
Pwr
Radio & cd player
Radio 1 fuse 20a
Radio 2 fuse 7.5a
Red
Right front door speaker
Right rear speaker
Rl+
Rl-
Rr+
Rr-
Ru+
Ru-
Sgnd
Shield
Short connector (in left side of luggage compartment)
Sp+
Sp-
Speaker relay
Stereo power amplifier (on right side of luggage compartment)
Telephone transceiver
Telephone transceiver & speaker relay (in left side of luggage compartment)
Tlmt
Txm+
Txm-
Txs+
Txs-
Vol+
Volc
W/ telephone
W/o telephone
W/telephone
Wf+
Wf-
Woofer speaker (right side of rear shelf)
Woofer speaker amplifier (on right front of luggage compartment)

with CD Changer, Pioneer for Lexus SC 300 1994

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List of elements for with CD Changer, Pioneer for Lexus SC 300 1994:

(console box harness, under front end of center console) i30
(console box harness, under front end of center console) i31
(floor 3 harness, right front of luggage compartment) b24
(floor 3 harness, right side of rear windshield, at base) b37
(floor 3 harness, under center console)
(floor 3 harness, under rear seat)
(floor 3 harness, under rear seat) b19
(under right ashtray) g302
A/c control switch & radio switch
A10
A11
A12
A13
A14
A15
Acc
Amp
Ant
Anta
Antb
Aud+
Aud-
Automatic cd changer
B10
B12
B16
B16 (floor 3 harness, under center console)
B19
B25 (floor 3 harness, right front of luggage compartment)
Beep
Cd player
Cdl+
Cdl-
Cdr+
Cdr-
D10
D11
D12
E10
Engine compartment fuse/relay block (on left front of engine compartment, behind battery)
Fl+
Fl-
Fr+
Fr-
Gnd
Hot at all times
Hot in acc or on
I30 (console box harness, front end of center console)
I30 (console box harness, under front end of center console)
Illumination
Interior lights system
Left front door speaker
Left rear speaker
Luggage compartment light switch
Mute
Passenger compartment fuse/relay block (behind left kick panel)
Pnk
Power antenna system
Pwr
Radio & cd player
Radio 1 fuse 20a
Radio 2 fuse 7.5a
Red
Right front door speaker
Right rear speaker
Rl+
Rl-
Rr+
Rr-
Ru+
Ru-
Sgnd
Shield
Short connector (in left side of luggage compartment)
Sp+
Sp-
Speaker relay
Stereo power amplifier (on right side of luggage compartment)
Telephone transceiver
Telephone transceiver & speaker relay (in left side of luggage compartment)
Tlmt
Txm+
Txm-
Txs+
Txs-
Vol+
Volc
W/ telephone
W/o telephone
W/telephone
Wf+
Wf-
Woofer speaker (right side of rear shelf)
Woofer speaker amplifier (on right front of luggage compartment)

SHIFT INTERLOCKS

Shift Interlock Wiring Diagram for Lexus SC 300 1994

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List of elements for Shift Interlock Wiring Diagram for Lexus SC 300 1994:

15a
Acc
Cig fuse
E17
E18
E20
Ecu-ig fuse
G200 (left kick panel)
H13
H15
Hot at all times
Hot in acc or on
Hot in start or on
I10
J/b 1 (left kick panel)
J/b 3 (behind combi- nation meter)
Key interlock solenoid (ignition switch)
Kls+
Noise filter (below combination meter)
Shift lock control switch
Shift lock ecu (below console, near shift selector)
Shift lock solenoid
Sls+
Sls-
Solid state
Stop fuse
Stop light switch (on brake pedal support)
Stp

STARTING/CHARGING

Charging Wiring Diagram for Lexus SC 300 1994

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List of elements for Charging Wiring Diagram for Lexus SC 300 1994:

* sc 300 ** sc 400
1a*
1h**
Alt fusible link *120a **150a
Alt sencing fuse 7.5a
Alternator
Battery
Charging warning indicator
Engine fuse 7.5a
Fuse block (relay box 2)
Hot in run
Hot in run or start
Ign fuse 7.5a
Instrument cluster
J 1 junction connector (behind left side of dash)
J/b 1 (left side of i/p)
Main fusible link 60a
Nca
Relay box 2 (left side of engine compartment)
Starter motor

Starting Wiring Diagram for Lexus SC 300 1994

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List of elements for Starting Wiring Diagram for Lexus SC 300 1994:

(on transaxle)
(sc 400)
(sc 400) (sc 300)
Acc
Alt fusible link 150a 120a
Am1
Am1 fusible link 100a
Battery
Clutch start switch (sc 300 m/t) (on clutch pedal support)
Engine controls:
Engine controls: ignition main relay
Fuse block (relay box 2)
Ignition switch
Igsw fuse 40a
Instrument cluster (sc 400)
J/b 1 (left kick panel)
Lock
Main fusible link 60a
Nca
Park/ neutral position switch
Relay box 2 (left side of engine compartment)
Run
St fuse 7.5a
St1
Start
Starter motor (rear of engine)
Starter relay
Theft deterrent and door lock control ecu (behind right side of i/p)

SUPPLEMENTAL RESTRAINTS

Supplemental Restraint Wiring Diagram for Lexus SC 300 1994

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List of elements for Supplemental Restraint Wiring Diagram for Lexus SC 300 1994:

(left kick panel)
+sl
+sr
-sl
-sr
A10
A11
Acc
Airbag
Airbag squib (front passenger's airbag assembly)
Airbag squib (steering wheel pad)
Center airbag sensor assembly (under front of console)
Cig fuse 15a
Combination meter
D11
Data link connector 1 (left side of eng)
Data link connector 2 (left side of i/p)
E10
E13
Ecu-b fuse 15a
G10
G200
H12
Hot at all times
Hot in on or acc
Hot in start or on
Ig2
Ign fuse 7.5a
J/b 1 (left kick panel)
J/b 3 (behind combi- nation meter)
Left front airbag sensor (except 1996) (left front of eng compt)
Red
Right front airbag sensor (except 1996) (right front of eng compt)

TRANSMISSION

Transmission Wiring Diagram for Lexus SC 300 1994

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List of elements for Transmission Wiring Diagram for Lexus SC 300 1994:

(below left side of i/p)
(lock-up) no.3
(not used)
(on throttle body)
+b1
A/t indicator switch (park/neutral position switch, neutral start switch & backup light switch (on top left side of transmission)
Batt
C 1995 vftc
Conn a
Conn b
Cruise control ecu (left side of i/p, left of steering column)
D13
Data link connector 1 (check connector) (left side of engine)
Data link connector 2 (tdcl) (behind left side of i/p)
Distributor (right front of engine)
E11
E12
E18
Ect
Efi fuse 30a
Efi main relay
Electronic controlled transmission pattern select switch
Electronic controlled transmission solenoid (on trans- mission)
Engine control module (engine & electronic controlled transmission ecu) (under front end of center console)
Engine coolant temp. sensor (left front of engine)
Eo1
Eo2
G100 (front side of left fender)
G117 (rear side of right cylinder head)
G200 (left kick panel)
Gauge fuse 10a
H12
Heater relay (in r/b 2) (left side of eng compt.)
Hot at all times
Hot in on or start
Hot in start
I10
Idl
Idl1
Idl2
Ign fuse 7.5a
Igsw
Instru- ment cluster system (a/t indicator light) (combi- nation meter)
Instru- ment cluster system (a/t indicator light) (shift lever)
Interior lights system
J/b 1 (left kick panel)
J/b 3 (behind center of i/p)
Kick down switch
Models only
Mrel
No. 1
No. 2
Noise filter (for stop light) (behind left side of i/p)
Norm.
Nsw
O/d main switch
Od1
Od2
Pin 10 "l"
Pin 5 "p"
Pin 6 "r"
Pin 7 "n"
Pin 8 "d"
Pin 9 "2"
Pin a1
Pin a14
Pin b4
Pin c1
Pin c16
Pin c18
Pin c2
Pin c3
Pin c4
Pin c5
Pnk
Pwr
R n
R/b 2 (left side of engine compt.)
Red
Short connector (behind left side of i/p)
Sp1
Sp2
Sp2-
St fuse 7.5a
Starting/ charging system
Stop fuse 15a
Stop light switch (on bracket, above brake pedal)
Sub-throttle position sensor (w/traction control)
Te1
Te2
Throttle position sensor
Thw
Vehicle speed sensor no.2 (for e.c.t.) (on trans. output shaft)
Vta
Vta1
Vta2
W/ trac. ctrl.