Diagram sections — 29 (54 total)
AIR CONDITIONING ANTI-LOCK BRAKES COMPUTER DATA LINES CRUISE CONTROL DEFOGGERS ELECTRONIC POWER STEERING ENGINE PERFORMANCE EXTERIOR LIGHTS GROUND DISTRIBUTION HEADLIGHTS HORN INSTRUMENT CLUSTER INTERIOR LIGHTS MEMORY SYSTEMS PASSIVE RESTRAINTS POWER ANTENNA POWER DISTRIBUTION POWER MIRRORS POWER SEATS POWER TOP/SUNROOF POWER WINDOWS RADIO SHIFT INTERLOCKS STARTING/CHARGING SUPPLEMENTAL RESTRAINTS TRANSMISSION TRUNK, TAILGATE, FUEL DOOR WARNING SYSTEMS WIPER/WASHER
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: 54 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 List of elements for A/C Wiring Diagram (2 of 2) for Lexus SC 300 1994: 42 (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 List of elements for Anti-lock Brake Wiring Diagrams, with Traction Control for Lexus SC 300 1994: 91 (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, without Traction Control for Lexus SC 300 1994 List of elements for Anti-lock Brake Wiring Diagrams, without Traction Control for Lexus SC 300 1994: 55 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 List of elements for Computer Data Lines for Lexus SC 300 1994: 51 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 List of elements for Cruise Control Wiring Diagram for Lexus SC 300 1994: 79 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 List of elements for Defogger Wiring Diagram for Lexus SC 300 1994: 30 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 List of elements for Electronic Power Steering Wiring Diagram for Lexus SC 300 1994: 21 (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 (2 of 3) for Lexus SC 300 1994 List of elements for 3.0L, Engine Performance Wiring Diagrams (2 of 3) for Lexus SC 300 1994: 68 (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 List of elements for 3.0L, Engine Performance Wiring Diagrams (3 of 3) for Lexus SC 300 1994: 66 (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 List of elements for Exterior Light Wiring Diagram (1 of 2) for Lexus SC 300 1994: 48 (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 List of elements for Exterior Light Wiring Diagram (2 of 2) for Lexus SC 300 1994: 45 (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 List of elements for Ground Distribution Wiring Diagram (1 of 5) for Lexus SC 300 1994: 44 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 List of elements for Ground Distribution Wiring Diagram (2 of 5) for Lexus SC 300 1994: 42 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 List of elements for Ground Distribution Wiring Diagram (3 of 5) for Lexus SC 300 1994: 54 (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 List of elements for Ground Distribution Wiring Diagram (4 of 5) for Lexus SC 300 1994: 40 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 List of elements for Ground Distribution Wiring Diagram (5 of 5) for Lexus SC 300 1994: 40 (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 List of elements for Headlamps Wiring Diagram, with DRL for Lexus SC 300 1994: 64 (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 List of elements for Headlamps Wiring Diagram, without DRL for Lexus SC 300 1994: 53 (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 List of elements for Horn Wiring Diagram for Lexus SC 300 1994: 8 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 (2 of 2) for Lexus SC 300 1994 List of elements for Instrument Cluster Wiring Diagram (2 of 2) for Lexus SC 300 1994: 55 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 List of elements for Courtesy Lamps Wiring Diagram for Lexus SC 300 1994: 42 (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 List of elements for Instrument Illumination Wiring Diagram for Lexus SC 300 1994: 51 (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 List of elements for Memory Mirrors Wiring Diagram for Lexus SC 300 1994: 49 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 List of elements for Memory Power Tilt & Power Telescopic Wiring Diagram for Lexus SC 300 1994: 75 (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 List of elements for Memory Seat Wiring Diagram (1 of 2) for Lexus SC 300 1994: 81 (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 List of elements for Memory Seat Wiring Diagram (2 of 2) for Lexus SC 300 1994: 40 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 List of elements for Electric Tension Reducer Wiring Diagram for Lexus SC 300 1994: 14 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 List of elements for Power Antenna Wiring Diagram for Lexus SC 300 1994: 34 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 List of elements for Power Distribution Wiring Diagram (1 of 6) for Lexus SC 300 1994: 69 (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 List of elements for Power Distribution Wiring Diagram (2 of 6) for Lexus SC 300 1994: 61 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 List of elements for Power Distribution Wiring Diagram (3 of 6) for Lexus SC 300 1994: 60 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 List of elements for Power Distribution Wiring Diagram (4 of 6) for Lexus SC 300 1994: 53 (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 List of elements for Power Distribution Wiring Diagram (5 of 6) for Lexus SC 300 1994: 51 (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 List of elements for Power Distribution Wiring Diagram (6 of 6) for Lexus SC 300 1994: 43 (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 List of elements for Photochromic Mirror Wiring Diagram for Lexus SC 300 1994: 11 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 List of elements for Power Mirror Wiring Diagram for Lexus SC 300 1994: 20 (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 List of elements for Power Seat Wiring Diagrams for Lexus SC 300 1994: 32 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 List of elements for Power Top/Sunroof Wiring Diagrams for Lexus SC 300 1994: 36 (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 List of elements for Power Window Wiring Diagram for Lexus SC 300 1994: 35 (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 List of elements for Base Radio, without CD Changer for Lexus SC 300 1994: 65 (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 List of elements for with CD Changer, Nakamichi for Lexus SC 300 1994: 92 (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 List of elements for with CD Changer, Pioneer for Lexus SC 300 1994: 94 (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 List of elements for Shift Interlock Wiring Diagram for Lexus SC 300 1994: 28 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 List of elements for Charging Wiring Diagram for Lexus SC 300 1994: 20 * 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 List of elements for Starting Wiring Diagram for Lexus SC 300 1994: 28 (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 List of elements for Supplemental Restraint Wiring Diagram for Lexus SC 300 1994: 33 (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 List of elements for Transmission Wiring Diagram for Lexus SC 300 1994: 97 (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.
TRUNK, TAILGATE, FUEL DOOR Trunk & Fuel Door Release Wiring Diagram for Lexus SC 300 1994 List of elements for Trunk & Fuel Door Release Wiring Diagram for Lexus SC 300 1994: 22 +b2 Acc Cig fuse 15a Door fuse 30a E18 Ecu-ig fuse 10a Fuel lid opener switch Fuel lid opener motor (right side of luggage compartment) G200 (left kick panel) G305 (below right "b" pillar) Head Hot at all times Hot in acc or run Hot in run or start I14 J/b 1 (left kick panel) J/b 3 (center of dash) K13 Luggage compartment door open switch Luggage compartment door opener motor (center rear of luggage compartment) Theft deterrent & door lock ecu (behind instrument cluster) Tsw
WARNING SYSTEMS Warning System Wiring Diagrams for Lexus SC 300 1994 List of elements for Warning System Wiring Diagrams for Lexus SC 300 1994: 23 (integration relay) C12 Combination meter D10 D13 Dome fuse 10a E12 G200 (left kick panel) G308 (below left "b" pillar) Gauge fuse 10a H13 Hot at all times Hot in start or on I15 J/b 1 (left kick panel) J/b 3 (behind combination meter) Left buckle switch (inside driver's buckle head) Left door lock/ unlock motor & door detection position switch R/b 2 (left side of eng compt) Red Seat belt warning light Timer/buzzer Unlock warning switch (in ignition switch)
WIPER/WASHER Wiper/Washer Wiring Diagram for Lexus SC 300 1994 List of elements for Wiper/Washer Wiring Diagram for Lexus SC 300 1994: 27 10a 20a A13 A14 B17 Combination meter D13 E12 G100 (front side of left fender) G200 (left kick panel) Gauge fuse H16 High Hot in start or on Int Int. time J/b 1 (left kick panel) J/b 3 (behind combination meter) Low/ mist Off Washer level ind. Washer level switch (in washer fluid reservoir) Washer motor (left front of eng compt) Washer switch Wiper and washer switch Wiper fuse Wiper motor (left rear of eng compt)
