Diagram sections — 33 (68 total)
AIR CONDITIONING ANTI-LOCK BRAKES ANTI-THEFT BODY COMPUTER COMPUTER DATA LINES COOLING FAN CRUISE CONTROL DEFOGGERS ELECTRONIC POWER STEERING ENGINE PERFORMANCE EXTERIOR LIGHTS GROUND DISTRIBUTION HEADLIGHTS HORN INSTRUMENT CLUSTER INTERIOR LIGHTS MEMORY SYSTEMS NAVIGATION PASSIVE RESTRAINTS POWER DISTRIBUTION POWER DOOR LOCKS 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 Air Conditioning Wiring Diagrams (1 of 2) for Lexus GS 300 1998 List of elements for Air Conditioning Wiring Diagrams (1 of 2) for Lexus GS 300 1998: 100 (a/c sub wire harness, behind center of dash) i2 (left fender) g102 (right side of dash) air inlet control servo motor (upper right side of dash) g201 A/c control assembly (center of dash) A/c dual pressure switch (left side of radiator grille) A/c room temperature sensor (left side of dash) A/c solar sensor (top right side of dash) A/c thermister (center of dash) A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 A29 Acc Acmg Aif Air Air mix control servo motor (driver side) (behind left side of dash, right of steering column) Air vent mode control servo motor (center of dash) Amcdr Amcpa Amhdr Amhpa Aod Aof B10 B11 B12 B13 B14 B15 B16 B18 Blw D10 D13 D21 D27 Dgs Driver side j/b (left kick panel) Ecu-b2 fuse 5a Engine control module (left side of engine compartment, in ecu box) F13 F21 F22 F23 F24 Gnd Gs 300 Gs 400 Hot at all times Hot in acc or on I2 (a/c sub wire harness, behind center of dash) Ill Instrument panel j/b (center dash reinforcement) Interior lights system J/c 17 (top right side of dash) J/c 18 (right kick panel) Lcki Left front corner of engine compartment) e4 Mfrs Mpx+ Mpx- Mpx1 Mpx2 Mrec Multi-display (w/lexus navigation system) Passenger side j/b (right kick panel) Pre Radio n0.2 fuse 15a Red S5-2 S5-3 S5-4 Sg-1 Sg-3 Sg-4 Sg-5 Tam Tel in Telephone transceiver & speaker relay (center of rear shelf) Tilt & telescopic ecu (behind left side of dash) Tpdr Tpi Tpo Tppa Tsdr Tspa W/0 :lexus navigation system W/lexus navigation system Air Conditioning Wiring Diagrams (2 of 2) for Lexus GS 300 1998 List of elements for Air Conditioning Wiring Diagrams (2 of 2) for Lexus GS 300 1998: 43 (behind combination meter) g202 (canada) g102 (usa) (left fender) (canada) i1 (cowl wire harness, behind combination meter) (engine wire harness, right rear of engine) e1 (gs 400) e1 (gs 300) (engine wire harness, left front of engine) (left bank of cylinder head) g114 (gs 400) g131 (gs 300) (rear of intake manifold) (left fender) g102 (upper right side of dash) g201 A.c single pressure switch (left side of radiator grille) A/c ambient temperature sensor (left side of radiator grille) A/c compressor relay A/c condenser fan motor A/c magnetic clutch & lock sensor (left front of engine) Air mix control servo motor (front passenger side) (center of dash) Blower motor (right side of dash) Blower motor controller (center of dash) Body ecu 1 Cds fan fuse 30a Driver side j/b (left kick panel) E4 (usa) (cowl wire harness, left front corner of engine compartment) Engine room 1 r/b (right side of engine compartment) Engine room 3 r/b (left side of engine compartment) Exhaust gas sensor (left side of radiator grille) F12 Fan 1 relay Fan 2 relay Fan 3 relay Gas Gnd Heater fuse 10a Heater fuse 50a Hot at all times Hot in on or start Htr relay Ign fuse 5a J/c 13 (behind left side of dash) J/c 14 (behind left side of dash) J/c 17 (top right side of dash) J/c 2 (left side of engine compartment, in ecu box) Passenger j/b (right kick panel) Passenger side r/b (right kick panel) Radiator fan motor Rdi fan fuse 30a Red Water temperature switch (left side of radiator grille)
ANTI-LOCK BRAKES Anti-lock Brake Wiring Diagrams (1 of 3) for Lexus GS 300 1998 List of elements for Anti-lock Brake Wiring Diagrams (1 of 3) for Lexus GS 300 1998: 54 (under abs/ trac/ vsc actuator) A10 A11 A12 A19 A22 Abs & trac & vsc actuator (at left rear corner of engine compartment) Abs & trac & vsc ecu (behind left side of dash) Abs 1 fuse 60a Abs 2 fuse 40a Abs motor relay Abs sol relay Ast Braided Engine room r/b 1 (on right side of engine compt, behind strut tower) Engine room r/b 2 (on left side of engine compt, behind strut tower) Fl+ Fl- Fr+ Fr- Fss G103 (right front strut tower) G116 G116 (under abs/ trac/ vsc actuator) G200 Grd1 Grd2 Hot at all times Junction connector j/c 5 (left rear corner of engine compartment) Junction connector j/c 6 (left kick panel) Mr1 Mr2 Mt+ Mt- Mtt Pmc Pnk R1+ R2+ Red Sa1 Sa2 Sa3 Sflh Sflr Sfrh Sfrr Srlh Srlr Srrh Srrr Str Trac motor relay Vcm Anti-lock Brake Wiring Diagrams (2 of 3) for Lexus GS 300 1998 List of elements for Anti-lock Brake Wiring Diagrams (2 of 3) for Lexus GS 300 1998: 37 (1998-99) (2000) (at left side of engine compt, behind ecu box) data link connector 1 (behind left side of dash) data link connector 3 (upper right end of dash) junction connector j/c 17 A19 Body ecu 2 Braided Brake fluid level warning switch (in brake fluid reservoir) C (or b) Driver side j/b (behind left kick panel) Driver side j/c (behind left kick panel) Ecu-ig fuse 15a G102 (usa) (left front strut tower) G200 G201 (upper right side of dash) G202 Hot at all times Hot in run or start Junction connector j/c 1 (under ecu box) Junction connector j/c 10 (upper left end of dash) Junction connector j/c 15 (behind combination meter) Junction connector j/c 3, j/c 4 (under ecu box) Junction connector j/c 6 (left kick panel) Junction connector j/c 7 (left kick panel) Junction connector j/c 9 (upper left end of dash) Left front abs speed sensor (left front wheel assembly) Master cylinder pressure sensor (at left rear corner of engine compartment) Park/neutral position switch (on transmission) Pnk Red Right front abs speed sensor (right front wheel assembly) Steering sensor (combination switch) Stop fuse 15a Stoplight switch (on brake pedal bracket) Vsc off switch Vsc warning buzzer (behind left side of dash) Anti-lock Brake Wiring Diagrams (3 of 3) for Lexus GS 300 1998 List of elements for Anti-lock Brake Wiring Diagrams (3 of 3) for Lexus GS 300 1998: 65 (3.0l) (4.0l) (upper left end of dash) junction connector j/c 9 (upper right end of dash) junction connector j/c 17 A20 A21 Abs & trac & vsc ecu (behind left side of dash) Abs deceleration sensor (under rear of center console) Abs indic B11 B13 B14 B15 B16 B17 Braided Brake indic Brl Combination meter Csw D/g Driver side j/b (bhind left kick panel) Eng+ Eng- Engine control module (at left side of engine compt, in ecu box) Flo Gauge fuse 10a Ggrd Gl1 Gl2 Grd3 Grd4 Gss Gyaw Headlights system Hot in start or run Ig1 Ig2 Ign fuse 5a Ind Junction connector j/c 14 (behind comb- ination meter) Left rear abs speed sensor (left rear wheel assembly) Neo Pnk Red Right rear abs speed sensor (right rear wheel assembly) Rl+ Rl- Rr+ Rr- Slip indic Sp1 Ss1+ Ss1- Stp Trc+ Trc- Vgs Vsc indic Vsc off indic Vscw Vys Yaw Yaw rate sensor (under rear of center console) Yss
ANTI-THEFT Anti-theft Wiring Diagram (1 of 3) for Lexus GS 300 1998 List of elements for Anti-theft Wiring Diagram (1 of 3) for Lexus GS 300 1998: 56 (dash harn, right side of dash) A13 A15 A17 A19 B14 B15 Bdr Becu Body ecu 2 C12 C18 Computer data lines system Cpub Cty Ctye D fr door fuse 20a D rr door fuse 20a Driver door ecu (in driver's door) Driver side junction block (behind left kick panel) Ecu-ig fuse 15a Exterior lights system G200 Grd Gswo H10 H11 H13 Headlights system Hot at all times Hot in accy or run Hot in run or start Hrly Ile Interior lights system Junction connector j/c 10 (behind left side of dash) Junction connector j/c 13 (behind left side of dash) Junction connector j/c 6 (left kick panel) Junction connector j/c 7 (left kick panel) Junction connector j/c 8 (behind left kick panel) Kul Left door lock control switch (power window master switch) Left front door courtesy switch Left front door lock motor, door key lock & unlock switch & door lock detection switch Lock Lock detect Lsw Lswe Mpx1 Mpx2 Mul Pwe Radio 2 fuse 15a Sig Trly Unlk Anti-theft Wiring Diagram (2 of 3) for Lexus GS 300 1998 List of elements for Anti-theft Wiring Diagram (2 of 3) for Lexus GS 300 1998: 34 Bdr Cpub Cty Ctye Diode (luggage compartment door open detection) (at left side of luggage compt) Engine hood courtesy switch Engine room relay block 1 (on right side of engine compt, behind strut tower) G102 (left front strut tower) G311 (center of rear shelf) G904 G904 (under left c-pillar) G905 Grd Hot at all times Junction connector j/c 20 (left quarter panel) Junction connector j/c 22 (under right c-pillar) Left rear door courtesy switch Left rear door ecu (in left rear door) Left rear door lock motor & door lock detection switch Lock detect Lsw Lswe Luggage compartment door courtesy switch & opener motor Luggage compartment door key unlock switch Mpx-b fuse 10a Mpx1 Mpx2 Power seat ecu (under driver's seat) Right rear door courtesy switch Right rear door ecu (in right rear door) Right rear door lock motor & door lock detection switch Sig W/ memory seats W/o memory seats Anti-theft Wiring Diagram (3 of 3) for Lexus GS 300 1998 List of elements for Anti-theft Wiring Diagram (3 of 3) for Lexus GS 300 1998: 80 (at right side of luggage compartment) wireless door lock ecu (left rear corner of engine compt) wireless door lock buzzer (under right c-pillar) junction connector j/c 22 A10 A12 A13 A15 A16 A18 A19 A22 A25 Acc B14 B15 Bdr Becu Body ecu 1 Bsub Bzr Bzr2 C12 C15 C16 C17 Combination meter Computer data lines system Cpub Cty Ctye Dle Dome fuse 10a Engine control system Exterior lights system F11 Front passenger door ecu (in passenger's door) G200 G201 (upper right side of dash) G905 Grd Gsw H11 H13 Haz Hcty Horn Horns system Hot at all times Ind Junction conenctor j/c 6 (left kick panel) Junction connector j/c 14 (behind left side of dash) Junction connector j/c 15 (behind left side of dash) Junction connector j/c 17 (upper right end of dash) Kul Lgcy Lock Lock detect Lsw Lswe Mpx1 Mpx2 Mul P fr door fuse 20a P rr door fuse 20a Passenger side junction block (behind lower right end of dash) Passenger side junction block (behind right kick panel) Pnk Pws Rco Rda Right front door courtesy switch Right front door lock control switch Right front door lock motor, door key lock & unlock switch & door lock detection switch Rssi Security indicator (rheostat) Sig Theft deterrent horn (at right front of engine compt) Tkul Tr+ Unlk
BODY COMPUTER Body Computer Wiring Diagrams (1 of 2) for Lexus GS 300 1998 List of elements for Body Computer Wiring Diagrams (1 of 2) for Lexus GS 300 1998: 93 (left front strut tower) g102 (left kick panel) junction connector j/c 7 3.0l 4.0l A/c control assembly A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 A23 A24 A25 Acan Altl Auto B11 Becu Blvl Body ecu 2 Brake fluid level warning switch (in brake fluid reservoir) C13 Center airbag sensor Clock Cltb Clte Clts Combination meter D27 D28 Dbkl Driver side junction block (behind lower left end of dash) Ecu-ig fuse 15a Engine control module (at left side of engine compt, in ecu box) F11 F24 Ffgo Ffog Fog light switch Fog relay G200 Grd Gsw Gswo H11 H13 Head Head lp relay Headlight switch Hot in run or start Hrly Ile Interior lights Junction connector j/c 10 (upper left end of dash) Junction connector j/c 15 (behind combination meter) Junction connector j/c 6 (left kick panel) Junction connector j/c 9 (upper left end of dash) Ksw Lamp failure module Left buckle switch Light control sensor Main drl relay Mirb Mire Mirs Mpx Mpx+ Mpx- Mpx1 Mpx2 Multi-display Not used Red Remote control mirror switch Shift lock control ecu Slck Stop light switch Stpi Tail Tail relay Tilt & telescopic ecu (behind left side of dash) Trly Unlock warning switch (behind left side of dash) W/ navigation W/o navigation Body Computer Wiring Diagrams (2 of 2) for Lexus GS 300 1998 List of elements for Body Computer Wiring Diagrams (2 of 2) for Lexus GS 300 1998: 95 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 A23 A24 A25 Acc Anti-theft indicator B10 B11 Becu Body ecu 1 Bsub Bzr Bzr2 C18 D24 Data link connector 3 Dfg Driver door ecu (in driver's door) Driver side junction block (behind lower left end of dash) Engine hood courtesy switch Engine room relay block 1 (on right side of engine compt, behind strut tower) F11 F12 Front passenger door ecu (in passenger's door) G201 (upper right side of dash) Grd Gsw H10 H11 H13 Haz Hazard switch Hcty Heater relay Horn Horn relay Hot at all times Hot in acc or run Ind Junction connector j/c 13 (behind combination meter) Left rear door ecu (in left rear door) Lgcy Luggage compartment courtesy switch Luggage compartment key unlock switch Luggage compartment opener motor Luggage compartment opener switch Mir relay Moon roof control ecu Mpx-b fuse 10a Mpx1 Mpx2 Not used Obd2 P fr door fuse 20a P19 Parking brake switch (behind left side of dash) Passenger side junction block (behind lower right end of dash) Pbkl Pkb Pnk Power seat ecu (under driver's seat) Power window master switch Pwr Pws R12 R13 Radio 2 fuse 15a Rco Rda Right front door lock switch Right rear door ecu (in right rear door) Right seat occupant sensor Rssi Snow Theft deterrent horn Tkul Tr+ Transmission pattern select switch Tsw W/ memory seat W/o memory seat Wireless door lock buzzer Wireless door lock ecu
COMPUTER DATA LINES Computer Data Lines for Lexus GS 300 1998 List of elements for Computer Data Lines for Lexus GS 300 1998: 51 (behind left side of dash) j/c 9 (front side of intake manifold) (3.0l) g131 (left front of engine compt) j/c 2 (on right cylinder head) g120 (4.0l) A/c control assembly A21 Abs & trac & vsc ecu (behind left side of dash) Anti-lock brake system (abs sol relay) Bat Body ecu 1 Body ecu 2 Center air bag sensor assembly (behind center of dash) Combination meter D/g Data link connector 1 (left side of engine compt) Data link connector 3 (behind left side of dash) Driver door ecu Driver side j/b Engine control module (left side of engine compt) Engine controls system (efi relay) F13 Front passenger door ecu G112 (4.0l) (on left cylinder head) G131 (3.0l) (front of intake manifold) G201 (upper right side of dash) Gs300 Gs400 H11 H12 Hot at all times J/c 10 (upeer left end of dash) J/c 14 (behind left side of dash) Left rear door ecu Moon roof control ecu (front of moon roof opening) Mpx+ Mpx- Mpx1 Mpx2 Multi-display Nca Obd fuse 7.5a Obd2 Passenger side j/b Power seat ecu (under driver's seat) Right rear door ecu Sil Tilt and telescopic ecu (behind left side of dash) W/ memory W/ navigation W/o memory W/o navigation
COOLING FAN Cooling Fan Wiring Diagram for Lexus GS 300 1998 List of elements for Cooling Fan Wiring Diagram for Lexus GS 300 1998: 35 A/c comp relay A/c condenser fan motor (in front of left side of radiator) A/c single pressure switch (at upper left radiator support) Acmg Air conditioning system Cds fan fuse 30a Driver side j/b (behind left kick panel) E4 (usa) (engine harness, under ecu box) Engine control module (at left side of engine compt, in ecu box) Engine main relay Engine room r/b (on right side of engine compt, behind strut tower) Engine room r/b 3 (on left side of engine compt, front of strut tower) Fan 1 relay Fan 2 relay Fan 3 relay Fan main fuse 50a G102 (left front strut tower) G102 (usa) (left front strut tower) G116 (under abs/trac/ vsc actuator) G202 (canada) (upper left side of dash) Heater fuse 10a Hot at all times Hot in run or start Htr relay I1 (canada) (dash harness, behind combination meter) Ign fuse 5a J/c 13 (behind upper left side of dash) J/c 14 (behind upper left side of dash) J/c 5 (left rear corner of engine compt) Passenger side j/b (behind right kick panel) Radiator fan motor (at left front engine compt) Rdi fan fuse 30a Red Under ecu box) Water temperature switch (at front of engine compt, behind left side of grille)
CRUISE CONTROL Cruise Control Wiring Diagram for Lexus GS 300 1998 List of elements for Cruise Control Wiring Diagram for Lexus GS 300 1998: 76 (behind ecu box) (engine harn, left side of engine) (engine harn, top left side of engine) (in ecu box) (left cylinder head) (left kick panel) j/6 c (right cylinder head) +b1 +bm A/t indicator light switch Accel position sensor (top center of engine) Batt Braided C12 C13 Cancel Ccs Cl+ Cl- Combination meter Computer data lines system Cpu Cruise control switch Cruise ind Data link connector 1 Driver side j/b Driver side junction block E01 E02 E03 Efi fuse 25a Efi relay Engine control module (left side of engine compt, in ecu box) Engine room relay block 1 Eom Etcs fuse 15a G102 (left front strut tower) G104 (left rear corner of engine compt) G112 G112 (left cylinder head) G120 G200 Gauge fuse 10a Ge01 Hot at all times Hot in on or start Ign fuse 5a Igsw J/c 1 (in ecu box) J/c 11 (left side of dash) J/c 14 (behind left side of dash) J/c 17 (behind right side of dash) J/c 2 (in ecu box) J/c 3 J/c 3 (in ecu box) J/c 5 (in engine room relay block 2) J/c 7 (behind left kick panel) J/c 9 (behind left side of dash) J/c4 Main Me01 Mpx2 Mrel Pnk Res/ acc Set/ coast Sti- Stop fuse 15a Stoplight switch (on brake pedal bracket) Stp Throttle control motor (on throttle body) Throttle position sensor (on throttle body) Vpa Vpa2 Vta Vta2
DEFOGGERS Heated Mirrors Wiring Diagram for Lexus GS 300 1998 List of elements for Heated Mirrors Wiring Diagram for Lexus GS 300 1998: 34 (behind lower right end of dash) passenger side junction block (left kick panel) j/c 6 (upper right side of dash) g201 3.0l 4.0l A/c control assembly (behind center of dash) A12 A13 A19 Alt fuse 120a Body ecu 1 D27 D28 Driver side junction block (behind lower left end of dash) Engine control module (at left side of engine compartment, in ecu box) Engine room relay block 1 (on right side of engine compt, behind strut tower) F11 F24 G200 G201 (upper right side of dash) H10 Heater fuse 10a Hot at all times Hot in on or start J/c 10 (upper left end of dash) J/c 13 (behind left side of dash) J/c 17 (upper right end of dash) Left remote control mirror heater Mir htr fuse 10a Mir htr relay Multi display (center of dash) Right remote control mirror heater W/ driving position memory W/o driving position memory Rear Defogger Wiring Diagram for Lexus GS 300 1998 List of elements for Rear Defogger Wiring Diagram for Lexus GS 300 1998: 24 3.0l 4.0l A/c control assembly (behind center of dash) A13 A19 Body ecu 1 D27 D28 Def relay (in passenger side relay block) Defog fuse 30a Driver side junction block (behind lower left end of dash) Engine control module (at left side of engine compartment, in ecu box) F11 F24 G201 (upper right side of dash) Heater fuse 10a Hot at all times Hot in on or start J/c 13 (behind left side of dash) Multi display (center of dash) Noise filter Passenger side junction block (behind lower right end of dash) Rear window defogger Red
ELECTRONIC POWER STEERING Electronic Power Steering Wiring Diagram for Lexus GS 300 1998 List of elements for Electronic Power Steering Wiring Diagram for Lexus GS 300 1998: 23 3.0l 4.0l/4.3l C12 C13 Combination meter Driver side j/b (behind left kick panel) Ecu-ig fuse 15a F13 G200 G201 (upper right side of dash) Gauge fuse 10a Hot in on or start J/c 10 (upper left end of dash) J/c 13 (left side of dash) J/c 17 (upper right end of dash) J/c 6 (left kick panel) J/c 7 (left kick panel) Pps ecu (behind left side of dash) Pps solenoid (at left front of engine) Pps solenoid (at right front of engine) Sol+ Sol- Spd
ENGINE PERFORMANCE
3.0L 3.0L, Engine Performance Wiring Diagrams (1 of 4) for Lexus GS 300 1998 List of elements for 3.0L, Engine Performance Wiring Diagrams (1 of 4) for Lexus GS 300 1998: 86 (behind left side of dash) (engine harn, in ecu box) (engine harn, left side of engine) (front of left front fender) (front side of intake manifold) (left front of engine) engine oil level sensor (rear side of intake manifold) (top left side of engine) camshaft timing oil control valve A braided Acis Air conditioning system Braided Camshaft position sensor (top center rear of engine) Canada Cl+ Cl- Conn e2 Conn e3 Crankshaft position sensor (left front of engine) E01 E02 E03 E2g Engine control module (left side of engine compt, in ecu box) Evg G100 G131 G131 (rear side of intake manifold) G202 Ge01 Generator Grd Ht1a Ht2a Igf Igniter (on left front shock tower) Ignition coil 1 Ignition coil 2 Ignition coil 3 Igt Igt2 Igt3 In1 In2 In3 Injector 1 Injector 2 Injector 3 Injector 4 Injector 5 Injector 6 Instrument cluster system (tachometer) J/c 2 (in ecu box) Knk1 Knk2 Knock sensor 1 (left front of engine) Knock sensor 2 (left side of engine) Lcki Mass airflow meter (in air intake duct) Me01 Mol Mops Ne+ Ne- Noise filter (top left front of engine) Ocv+ Ocv- Oil level Oil pressure switch (left front side of engine) Oil temp Ox1a Ox2a Power steering oil pressure switch (left rear of engine compt) Prg Red Tac Tha Throttle control motor (on throttle body) Thw Usa Vpa Vpa2 Vsv (acis) (left rear side of engine) Vsv (evap) (top rear of engine) Vta Vta2 3.0L, Engine Performance Wiring Diagrams (2 of 4) for Lexus GS 300 1998 List of elements for 3.0L, Engine Performance Wiring Diagrams (2 of 4) for Lexus GS 300 1998: 43 (body harness, forward of left rear wheelwell) (engine harn, e2 (left side of dash) A j/c 4 Acc Accel position sensor (rear left side of engine) Am2 Braided Driver side junction block Efi fuse 25a Efi relay Engine coolant temperature sensor (top left front of engine) Engine room relay block 1 F10 Fp+ Fp- Fpc Fuel pump (in fuel tank) Fuel pump control ecu (left side of luggage compartment) G104 (left rear corner of engine compt) G131 (rear side of intake manifold) Heated oxygen sensor (bank 1 sensor 1) (on left side of engine, in exhaust manifold) Heated oxygen sensor (bank 2 sensor 1) (on right side of engine, in exhaust manifold) Hot at all times Ig2 Ign fuse 5a Ignition switch J/c 14 (behind left side of dash) J/c 15 (behind left side of dash) J/c 2 (behind right side of dash) J/c 20 (left quarter panel) J/c 3 J/c 5 (in engine room relay block 2) Left side of engine) Lock P/n Park/neutral position switch (on transaxle) Red St2 Start Starter fuse 5a Starting/ charging system Throttle position sensor (on throttle body) 3.0L, Engine Performance Wiring Diagrams (3 of 4) for Lexus GS 300 1998 List of elements for 3.0L, Engine Performance Wiring Diagrams (3 of 4) for Lexus GS 300 1998: 60 (behind center of dash) a/c control assembly (behind left side of dash) (behind right side of dash) (in ecu box) (under center console) shift lock control ecu A/t indicator light switch (integral to park/neutral position switch) (on transmission) A/t p At4 Atl B j/c 4 Body ecu 1 (in passenger side junction block) Braided Braided f C12 Combination meter Cpu Driver side junction block E braided E j/c 4 E2 (engine harn, left side of engine) Ect pwr Ect snow Electronically controlled transmission pattern select switch Except navigation G131 (front side of intake manifold) G201 Gauge fuse 10a H12 Heated oxygen sensor (bank 1 sensor 2) (on exhaust system, near catalytic converter) Heated oxygen sensor (bank 2 sensor 2) (on exhaust system, near catalytic converter) Hot at all times Hot in on or start J/c 1 (in ecu box) J/c 11 (behind left side of dash) J/c 17 (behind right side of dash) J/c 3 J/c 3 (in ecu box) J/c 4 J/c 6 (left kick panel) J/c 7 (behind left kick panel) J/c 9 (behind left side of dash) Malfunction indicator light Mpx+ Mpx- Mpx1 Mpx2 Multi- display Navigation Nssd Nssl Obd fuse 7.5a Ptnk Pwr Red Snow Stop fuse 15a Stoplight switch (on brake pedal bracket) Tilt & telescopic ecu (left side of dash) Vapor pressure sensor (under left rear of vehicle) Vcc 3.0L, Engine Performance Wiring Diagrams (4 of 4) for Lexus GS 300 1998 List of elements for 3.0L, Engine Performance Wiring Diagrams (4 of 4) for Lexus GS 300 1998: 81 (behind ecu box) data link connector 1 (behind left side of dash) data link connector 3 (behind right side of dash) (on transmission) o/d direct clutch speed sensor (or pnk) (or pnk) (or pnk) (unused pins not shown) Abs & trac & vsc ecu (behind left side of dash) Acmg Air conditioning system Anti-theft system (security indicator) Bat Batt Braided Ccs Code Conn e4 Conn e5 Conn e6 Conn e7 Cruise control system Electronically controlled transmission solenoid (in transmission) Eng+ Eng- Engine control module (left side of engine compt, in ecu box) Engine room relay block 1 Eng_ Eom Etcs fuse 15a F13 Fpc G100 (front of left front fender) G131 (rear side of intake manifold) G201 G201 (behind right side of dash) Grd Hot at all times Ht1b Ht2b Igsw Imld J/c 10 (behind left side of dash) J/c 2 (in ecu box) J/c 6 (left kick panel) J/c 9 (behind left side of dash) Ksw Mpx1 Mpx2 Mrel Nco+ Nco- Neo Oil Ox1b Ox2b Passenger side junction block Pnk Pre Ptnk Red Rxck Sil Sln+ Sln- Slt+ Slt- Slu+ Slu- Sp2+ Sp2- Sta Sti- Stp Tam Tpc Transponder key amplifier (behind left side of dash) Trc+ Trc- Txct Unlock warning switch (behind left side of dash) Vehicle speed sensor (on transmission) Vsv (vapor pressure sensor) (under left rear of vehicle)
EXTERIOR LIGHTS Back-up Lamps Wiring Diagram for Lexus GS 300 1998 List of elements for Back-up Lamps Wiring Diagram for Lexus GS 300 1998: 16 (3.0l) (4.0l) (upper right end of dash) junction connector j/c 17 Back- up Driver side junction block (behind lower left end of dash) G904 Gauge fuse 10a Hot in run or start Junction connector j/c 1 (under ecu box) Junction connector j/c 19 (top of left rear wheelwell) Junction connector j/c 20 (under left c-pillar) Junction connector j/c 3 & 4 (under ecu box) Left rear combination light (inner) Park/neutral position switch (on transmission) Red Right rear combination light (inner) Exterior Lamps Wiring Diagram (1 of 2) for Lexus GS 300 1998 List of elements for Exterior Lamps Wiring Diagram (1 of 2) for Lexus GS 300 1998: 60 (dash harn, right side of dash) i6 (left quarter panel) junction connector j/c 20 (top of left rear wheelwell) junction connector j/c 19 A15 A19 Auto Automatic light control sensor (behind upper left side of dash) B14 B15 Bdr Becu Body ecu 2 Cltb Clte Clts Computer data lines system Cpub Cty Ctye D fr door fuse 20a Driver door ecu (in driver's door) Driver side junction block (behind lower left end of dash) Ecu-ig fuse 15a Engine room relay block 1 (on right side of engine compt, behind strut tower) G102 (left front strut tower) G200 G904 Grd Gswo H11 H13 Head Headlight switch Headlights system Hot at all times Hot in run or start Hrly Junction connector j/c 10 (upper left end of dash) Junction connector j/c 14 (behind combination meter) Junction connector j/c 19 (top of left rear wheel- well) Junction connector j/c 6 (left kick panel) Junction connector j/c 7 (left kick panel) Left front door courtesy switch Left front side marker light Left license plate light Left parking light Mpx-b fuse 10a Mpx1 Mpx2 Off Passenger side junction block (behind lower right end of dash) Red Right front side marker light Right license plate light Right parking light Sig Stop fuse 15a Stoplight switch (brake pedal bracket) Tail Trly Exterior Lamps Wiring Diagram (2 of 2) for Lexus GS 300 1998 List of elements for Exterior Lamps Wiring Diagram (2 of 2) for Lexus GS 300 1998: 62 (behind lower right end of dash) passenger side junction block (left front of trunk) b5 (left kick panel) (left kick panel) g200 (rear of left rear wheelwell) b4 (top of left rear wheelwell) junction connector j/c 19 A22 Alt fuse 120a B11 B5 (left front of trunk) Body computer system Brake lts C12 C13 Combination meter D10 Driver side junction block (behind lower left end of dash) E11 Engine room relay block (on right side of engine compt, behind strut tower) G102 (left front strut tower) G103 (right front strut tower) G200 G904 Gauge fuse 10a Grd Hazard switch Hi mount High mounted stop light (w/ rear spoiler) High mounted stop light (w/o rear spoiler) Hot at all times Hot in run or start Junction connector j/c 12 (behind combination meter) Junction connector j/c 17 (upper right end of dash) Junction connector j/c 20 (left quarter panel) Left Left & right rear combination lights (inner) Left front turn signal light Left rear combination light (outer) Left turn indic Lf signal Light failure sensor (at left side of luggage compartment) Markr Mpx2 Noise filter (high mounted stop light) (at left front corner of luggage compt) Power Right Right front turn signal light Right rear combination light (outer) Right turn indic Side marker Stop Stop sw Stp Tail Tail fuse 10a Tail lts Tail relay Taillt pwr Turn Turn signal flasher (behind left side of dash) Turn signal light switch Turn-haz fuse 10a
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 4) for Lexus GS 300 1998 List of elements for Ground Distribution Wiring Diagram (1 of 4) for Lexus GS 300 1998: 53 (3.0l only) (4.0l only) (w/ hid) (w/o hid) A/c lock sensor A21 A31 Abs & trac & vsc actuator Abs sol relay B17 Cruise control switch Data link connector 1 Data link connector 3 E1 (4.0l only) (top rear of engine) E1 (engine harn, top front of engine) Efi relay Engine control module Engine main relay Engine oil life sensor Engine room relay block 1 (on right side of engine compt, behind strut tower) Engine room relay block 2 (on right side of engine compt, behind strut tower) G103 (right front strut tower) G112 (4.0l) (on left cylinder head) G116 (under abs/trac/ vsc actuator) G120 (4.0l) (on right cylinder head) G131 (3.0l) (front side of intake mainfold) G131 (3.0l) (front side of intake manifold) Heated oxygen sensor (bank 1, sensor 1) Heated oxygen sensor (bank 1, sensor 2) Heated oxygen sensor (bank 2, sensor 1) Heated oxygen sensor (bank 2, sensor 2) I5 (dash harn, right side of dash) Igniter Ignition coil & igniter 1 Ignition coil & igniter 2 Ignition coil & igniter 3 Ignition coil & igniter 4 Ignition coil & igniter 5 Ignition coil & igniter 6 Ignition coil & igniter 7 Ignition coil & igniter 8 Junction connector j/c 2 (under ecu box) Junction connector j/c 4 (under ecu box) Junction connector j/c 5 (left rear corner of engine compt) Junction connector j/c 9 (upper left end of dash) Nca Right front fog light Right front side marker light Right front turn signal light Right headlight control ecu Right low beam headlight Right parking light Starter relay Ground Distribution Wiring Diagram (2 of 4) for Lexus GS 300 1998 List of elements for Ground Distribution Wiring Diagram (2 of 4) for Lexus GS 300 1998: 70 (3.0l only) (canada) (engine harn, under ecu box) e4 (on left side of engine compt, front of strut tower) engine room relay block 3 (usa) (w/ hid) (w/o hid) A/c dual pressure switch A13 A19 A31 Abs & trac & vsc ecu B28 Brake fluid level warning switch C12 C13 Center airbag sensor assembly Combination meter D24 D26 Data link connector 3 Daytime running light relay 3 Daytime running light relay 4 Dimmer switch Driver's door ecu E4 (engine harn, under ecu box) Engine control module Engine hood courtesy switch Exhaust gas sensor Fan 2 relay Fan 3 relay Front wiper & washer switch Front wiper motor G102 (left front strut tower) G200 Headlight beam level control ecu Headlight cleaner control relay Headlight cleaner motor High beam indicator light I1 (dash harn, behind combination meter) Junction connector j/c 10 (upper left end of dash) Junction connector j/c 11 (behind combination meter) Junction connector j/c 6 (left kick panel) Key interlock solenoid Left front fog light Left front side marker light Left front turn signal light Left head- light control ecu Left low beam headlight Left mirror heater Left parking light Light control switch Luggage compartment door opener switch Main daytime running light relay Power steering oil pressure switch Pps ecu Radiator fan motor Seat heater switch Steering sensor Tilt & telescopic ecu To driver side junction block (diagram 3 of 4) To passenger side junction block (diagram 3 of 4) Transponder key amplifier Turn signal flasher Turn signal switch Unlock warning switch W/ memory W/o memory Washer level warning switch Water temperature switch Ground Distribution Wiring Diagram (3 of 4) for Lexus GS 300 1998 List of elements for Ground Distribution Wiring Diagram (3 of 4) for Lexus GS 300 1998: 67 (canada 3.0l only) (canada) (dash harn, right side of dash) i6 (except nakamichi) (nakamichi) (on left side of engine compt, front of strut tower) engine room relay block 3 A/c control assembly A12 A13 A20 A22 Abs & trac & vsc ecu B17 B2 (body harn, top of right a-pillar) B27 Blower motor controller Body ecu 1 Body ecu 2 Brake fluid level warning switch Cd automatic changer Center airbag sensor assembly Cigarette lighter Clock Combination meter D/a converter Driver side junction block (behind lower left end of dash) Electronically controlled transmission pattern select switch F11 F13 Fan 2 relay Fan 3 relay From g200 (diagram 2 of 4) From junction connector j/c 10 (diagram 2 of 4) Front passenger door ecu Front wiper motor G201 (upper right side of dash) G202 (upper left side of dash) G302 (right side of instrument panel brace) Garage door opener Glove box light switch Hazard switch Htr relay I1 (dash harn, behind combination meter) Ig relay Inner mirror Instrument panel junction block (behind upper center of dash) Junction connector j/c 17 (upper right end of dash) Left rear interior light Left vanity light Moon roof control ecu Moon roof control switch Multi- display Noise filter Passenger side junction block (behind lower right end of dash) Passenger side relay block (behind lower right end of dash) Personal light Power outlet Power steering oil pressure switch Radio and player Right mirror heater Right rear interior light Right vanity light Shift lock control ecu Stereo component amplifier Vsc off switch W/ memory W/o memory Ground Distribution Wiring Diagram (4 of 4) for Lexus GS 300 1998 List of elements for Ground Distribution Wiring Diagram (4 of 4) for Lexus GS 300 1998: 51 (nakamichi) (w/ memory) (w/ rear wing) (w/o memory) (w/o rear wing) A22 B13 B4 (rear of left rear wheelwell) B6 (body harness, under driver's seat) C18 Cellular phone handset Driver's seat back heater Driver's seat control seat Driver's seat control switch Driver's seat front vertical position sensor Driver's seat lumbar control switch Driver's seat rear vertical position sensor Driver's seat recline position sensor Driver's seat slide position sensor Fuel lid opener motor Fuel pump control ecu G311 (center of rear shelf) G904 (under left c-pillar) G905 (under right c-pillar) High mounted stop light (bulb) High mounted stop light (led) Junction connector j/c 20 (left quarter panel) Junction connector j/c 22 (under right c-pillar) Junction connector j/c 23 (under driver's seat) Junction connector j/c 24 (under passenger's seat) Left buckle switch Left license light Left rear combination light Left rear door ecu Light failure sensor Luggage compartment door key unlock switch Navigation ecu P19 Passenger's lumbar support switch Passenger's power seat control switch Passenger's seat back heater Power seat ecu Right buckle switch Right license light Right rear combination light Right rear door ecu S17 Stereo component amplifier Stop light noise filter Telephone transceiver & speaker relay Wireless door lock ecu
HEADLIGHTS Headlamps Wiring Diagram, with DRL (1 of 2) for Lexus GS 300 1998 List of elements for Headlamps Wiring Diagram, with DRL (1 of 2) for Lexus GS 300 1998: 65 (dash harn, right side of dash) i6 (left front strut tower) g102 (left kick panel) junction connector j/c 7 A10 A15 A17 Altl Auto Automatic light control sensor (behind upper left side of dash) B10 B14 B15 Bdr Becu Body ecu 2 Cltb Clte Clts Computer data lines system Cpub Cty Ctye D fr door fuse 20a Dimmer switch Driver door ecu (in driver's door) Driver side junction block (behind lower left end of dash) Ecu-ig fuse 15a Engine room relay block 1 (on right side of engine compt, behind strut tower) Exterior lights system Ffgo Ffog Flash Fog lights Fog relay Foglight switch Fr fog fuse 15a G103 (right front strut tower) G200 Gauge fuse 10a Grd Gswo H11 H13 Head Headlight switch High Hot at all times Hot in start or run Hrly Junction connector j/c 10 (upper left end of dash) Junction connector j/c 17 (upper right end of dash) Junction connector j/c 6 (left kick panel) Left front door courtesy switch Left front fog light Low Mpx-b fuse 10a Mpx1 Mpx2 Off Passenger side junction block (behind lower right end of dash) Red Right front fog light Sig Tail Trly Headlamps Wiring Diagram, with DRL (2 of 2) for Lexus GS 300 1998 List of elements for Headlamps Wiring Diagram, with DRL (2 of 2) for Lexus GS 300 1998: 34 (on right side of engine compt, behind strut tower) engine room relay block A15 Combination meter Daytime running light relay 3 & 4 (at left front corner of engine compt) Dimmer drl 2 relay Drl 1 fuse 30a Drl 2 fuse 30a Ecu-b2 fuse 5a Engine room relay block 1 (on right side of engine compt, behind strut tower) Engine room relay block 3 (on left side of engine compt, front of strut tower) G102 (left front strut tower) G103 (right front strut tower) Head lp relay Headlights system (headlight beam level control ecu) Hi beam indic Hot at all times Junction connector j/c 11 (behind combo meter) Junction connector j/c 14 (behind combination meter) Junction connector j/c 15 (behind combo meter) Junction connector j/c 18 (right kick panel) Left high beam headlight Left low beam headlight Left lower head fuse 15a Left upper head fuse 15a Main daytime running light relay (behind right end of dash) Main fuse 40a Parking brake switch (behind left side of dash) Passenger side junction block (behind lower right end of dash) Pnk Red Right high beam headlight Right low beam headlight Right lower head fuse 15a Right upper head fuse 15a Headlamps Wiring Diagram, without DRL (1 of 2) for Lexus GS 300 1998 List of elements for Headlamps Wiring Diagram, without DRL (1 of 2) for Lexus GS 300 1998: 62 (dash harn, right side of dash) i6 (left front strut tower) g102 (left kick panel) junction connector j/c 7 A15 A17 A19 Auto Automatic light control sensor (behind upper left side of dash) B10 B14 B15 Bdr Becu Body ecu 2 Cltb Clte Clts Computer data lines system Cpub Cty Ctye D fr door fuse 20a Dimmer switch Driver door ecu (in driver's door) Driver side junction block (behind lower left end of dash) Ecu-ig fuse 15a Engine room relay block 1 (on right side of engine compt, behind strut tower) Exterior lights system Ffgo Ffog Flash Fog lights Fog relay Foglight switch Fr fog fuse 15a G103 (right front strut tower) G200 Grd Gswo H11 H13 Head Headlight switch High Hot at all times Hot in run or start Hrly Junction connector j/c 10 (upper left end of dash) Junction connector j/c 6 (left kick panel) Left front door courtesy switch Left front fog light Low Mpx-b fuse 10a Mpx1 Mpx2 Off Passenger side junction block (behind lower right end of dash) Red Right front fog light Sig Tail Trly Headlamps Wiring Diagram, without DRL (2 of 2) for Lexus GS 300 1998 List of elements for Headlamps Wiring Diagram, without DRL (2 of 2) for Lexus GS 300 1998: 33 A14 A15 B11 Combination meter Driver side junction block (behind lower left end of dash) Engine room relay block 1 (on right side of engine compt, behind strut tower) Engine room relay block 3 (on left side of engine compt, front of strut tower) G102 (left front strut tower) G103 (right front strut tower) Head lp relay Headlights system (headlight beam level control ecu) Hi beam indic Hot at all times Junction connector j/c 14 (behind combination meter) Junction connector j/c 15 (behind combination meter) Left high beam headlight Left low beam headlight Left low beam headlight control ecu Left lower head fuse 15a Left upper head fuse 15a Main fuse 40a Mpx buss Pnk Pwr Red Right high beam headlight Right low beam headlight Right low beam headlight control ecu Right lower head fuse 15a Right upper head fuse 15a Srs-b fuse 5a W/ hid W/o hid Headlamps Leveling Wiring Diagram for Lexus GS 300 1998 List of elements for Headlamps Leveling Wiring Diagram for Lexus GS 300 1998: 58 (behind combination meter) junction connector j/c 14 A15 Anti-lock brakes system Auto Automatic light control sensor (behind upper left side of dash) Becu Body ecu 2 Cltb Clte Clts Combination meter Driver side junction block (behind left kick panel) E1 (grd) Ecu-ig fuse 15a Engine room relay block 1 (on right side of engine compt, behind strut tower) Exterior lights system Front height control sensor (forward of left front strut tower) G102 (left front strut tower) G200 Gauge fuse 10a Grd H13 Hdlp Head Headlight beam level control ecu (at left front of engine compt) Headlight beam level control warning indicator Headlight switch Headlights system Hot at all times Hot in start or run Hrly I1 (dash harn, behind combination meter) I6 (dash harn, right side of dash) Junction connector j/c 10 (upper left end of dash) Junction connector j/c 6 (left kick panel) Junction connector j/c 7 (left kick panel) Left headlight beam level control motor Lhb1 Mpx-b fuse 10a Off Passenger side junction block (behind right kick panel) Rear height control sensor (under left rear of vehicle) Red Rh1 Rh2 Rh3 Rh4 Right headlight beam level control motor (on headlight assembly) Sbf Sbr Sgf Sgr Shf Shr Spdl Tail Trly Wng
HORN Horn Wiring Diagram for Lexus GS 300 1998 List of elements for Horn Wiring Diagram for Lexus GS 300 1998: 11 Body ecu 1 (in passenger side junction block) Combination switch Engine room r/b 1 (on right side of engine compt, behind strut tower) Engine room r/b 2 (on left side of engine compt, behind strut tower) Horn fuse 10a Horn relay Horn switch Hot at all times J/c 18 (right kick panel) Left horn Right horn
INSTRUMENT CLUSTER Instrument Cluster Wiring Diagram for Lexus GS 300 1998 List of elements for Instrument Cluster Wiring Diagram for Lexus GS 300 1998: 95 (canada) (usa) 1998-00 A/t p A10 A11 A12 A13 A14 A15 A16 A16 a1 A17 A18 A19 A20 A21 A22 Abs ind Anti-lock brake system B10 B11 B12 B13 B14 B15 B16 B17 B18 Body ecu 2 (in driver's side junction block) Brake ind Buzzer C12 C13 Center air bag sensor assambly (behind center of dash, forward of center console) Charge ind Combination meter Cpu Cruise ind Door ind Driver side junction block (behind left kick panel) Ect power ind Ect snow ind Engine controls system Engine room relay block 1 (right side of engine compt, behind strut tower) Exterior lights system F13 Fuel gauge Fuel ind Fuel sender (in fuel tank) Fuel sender (sub) (in fuel tank) G102 (left front strut tower) G200 G201 (upper right side of dash) Gauge fuse 10a Head ind Headlight leveling ind Headlights system High beam ind Hot at all times Hot in run or start Interior lights system J/c 10 (behind left side of dash) J/c 11 (behind left side of dash) J/c 17 (behind right side of dash) J/c 6 (left kick panel) Left turn ind M (gs400) 4 (gs300) Malfunction ind lamp Mpx-b fuse 10a Odo/trip Odometer/ tripmeter Oil level ind Oil press ind Passenger side junction block (behind right kick panel) Pnk Rear light ind Red Reset Rheostat Right turn ind Seat belt ind Slip ind Speedometer Srs ind Srs-b fuse 5a Tachometer Tail ind Tilt & and telescopic ecu (behind left side of dash) Vsc ind Vsc off ind Warning system Washer ind Washer level warning switch (left front of engine compt) Water temp gauge
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram (1 of 3) for Lexus GS 300 1998 List of elements for Courtesy Lamps Wiring Diagram (1 of 3) for Lexus GS 300 1998: 55 (1998 - 2000) (dash harn, right side of dash) A10 A12 A13 A19 B14 B15 Bdr Becu Body ecu 2 C12 C18 Computer data lines system Cpub Cty Ctyb Ctye D fr door fuse 20a D rr door fuse 20a Door Driver door ecu (in driver's door) Driver side junction block (behind left kick panel) Ecu-ig fuse 15a Exterior lights system G200 Grd Gswo H10 H11 H13 Headlights system Hot at all times Hot in run or acc Hot in run or start Hrly I1 (dash harn, behind combination meter) Ignition key cylinder light Ile Junction connector j/c 10 (behind left end of dash) Junction connector j/c 13 (behind combination meter) Junction connector j/c 6 (left kick panel) Junction connector j/c 7 (left kick panel) Junction connector j/c 8 (behind left kick panel) Left front door courtesy light Left front door courtesy switch Left step light Mpx1 Mpx2 Passenger side junction block (behind right kick panel) Personal light Radio 2 fuse 15a Right step light Sig Trly Courtesy Lamps Wiring Diagram (2 of 3) for Lexus GS 300 1998 List of elements for Courtesy Lamps Wiring Diagram (2 of 3) for Lexus GS 300 1998: 40 (dash harn, behind comb- ination meter) B2 (body harn, top of right a- pillar) Bdr Cpub Cty Ctyb Ctye Diode (luggage compartment door open detection) (at left side of luggage compartment) Engine room relay block 1 (on right side of engine compt, behind strut tower) G311 (center of rear shelf) G904 G904 (under left c-pillar) G905 Grd Hot at all times Junction connector j/c 20 (above left rear wheelwell) Junction connector j/c 22 (above right rear wheewell) Left rear door courtesy light Left rear door courtesy switch Left rear door ecu (in left rear door) Left rear interior light Left vanity light Luggage compartment door courtesy switch Luggage compartment light Mpx-b fuse 10a Mpx1 Mpx2 Noise filter (stoplight) (at left front corner of luggage compt) Passenger side junction block (behind right kick panel) Power seat ecu (behind left side of dash) Red Right rear door courtesy light Right rear door courtesy switch Right rear door ecu (in right rear door) Right rear interior light Right vanity light Rrlp Sig W/ memory seats W/o memory seats Courtesy Lamps Wiring Diagram (3 of 3) for Lexus GS 300 1998 List of elements for Courtesy Lamps Wiring Diagram (3 of 3) for Lexus GS 300 1998: 50 (1998 - 2000) (above right right wheelwell) (at right side of luggage compartment) wireless door lock ecu (left rear corner of engine compt) wireless door lock buzzer A12 A13 A15 A18 A19 Acc B14 B15 Bdr Becu Body ecu 1 Bsub Bzr Bzr2 C10 C12 Computer data lines system Cpub Cty Ctyb Ctye Dome fuse 10a F11 Front passenger door ecu (in right front door) G201 (upper right side of dash) G905 Grd Gsw H11 H12 Hot at all times Junction connector j/c 15 (behind left side of dash) Junction connector j/c 17 (upper right end of dash) Junction connector j/c 22 Mpx1 Mpx2 P fr door fuse 20a P rr door fuse 20a Passenger side junction block (behind right kick panel) Pnk Rco Rda Right front door courtesy light Right front door courtesy switch Rssi Sig Instrument Illumination Wiring Diagram for Lexus GS 300 1998 List of elements for Instrument Illumination Wiring Diagram for Lexus GS 300 1998: 38 (behind combination meter) junction connector j/c 16 (behind left side of dash) junction connector j/c 13 A/c control assembly A/t shift position illumination A13 Anti-theft system C12 Cigarette lighter Combination meter Driver side j/b (behind left kick panel) Driver side junction block (behind left kick panel) Driver side junction block (behind lower left end of dash) Electronically controlled transmission pattern select switch G200 G311 (center of rear shelf) G904 (under left c-pillar) Glove box light Glove box light switch Grd Hazard switch Headlight cleaner switch (canada) Hot in park or head I1 (dash harn, behind combination meter) Instrument panel junction block (behind upper center of dash) Junction connector j/c 6 (left kick panel) Left rear ashtray illumination Left rear door ecu (in left rear door) Mirror retraction switch Multi-display Panel fuse 7.5a Radio & player Remote control mirror switch Rheostat (security indicator light) Right rear ashtray illumination Right rear door ecu (in right rear door) Seat heater switch Vsc off switch Whe1
MEMORY SYSTEMS Memory System Wiring Diagrams (1 of 2) for Lexus GS 300 1998 List of elements for Memory System Wiring Diagrams (1 of 2) for Lexus GS 300 1998: 74 (left side of dash) j/c 13 Bdr Becu Body ecu 1 Body ecu 2 Computer data lines system Cpub D fr door fuse 20a D22 D23 D24 De2 Dm+r Dmhr Dmvr Down Driver door ecu (in driver's door) Driver side junction block (behind lower left end of dash) Driving position and memory control switch Dvc Ecu-ig fuse 15a Engine room relay block 1 (on right side of engine compartment, behind strut tower) F11 F12 F13 G200 G201 (upper right side of dash) Gnd Gswo H10 H11 Hot at all times Hot in accy or run Hot in on or start Hsr Hssr I6 (dash harn, right side of dash) J/c 10 (upper left end of dash) J/c 15 (left side of dash) J/c 17 (upper right end of dash) J/c 6 (left kick panel) J/c 7 (left kick panel) J/c 8 (left kick panel) Left Left remote control mirror Mem 1 Mem 2 Mirb Mire Mirs Mpx-b fuse 10a Mpx1 Mpx2 Mswe Operation switch P fr door fuse 20a Passenger door ecu (in right front door) Passenger junction block (behind lower right end of dash) Pe2 Pm+r Pmhr Pmvr Pnk Pvc Radio 2 fuse 15a Red Remote control mirror switch Right Right remote control mirror Select switch Set Sig Vsr Vssr Memory System Wiring Diagrams (2 of 2) for Lexus GS 300 1998 List of elements for Memory System Wiring Diagrams (2 of 2) for Lexus GS 300 1998: 74 (body harness, under driver's seat) (upper left end of dash) j/c 10 Computer data lines system D p/seat fuse 30a Down Driver side junction block (behind lower left end of dash) Driver's seat front vertical motor Driver's seat lumbar support control motor Driver's seat rear vertical motor Driver's seat reclining motor Driver's seat sliding motor Ecu-b2 fuse 5a Ecub Ecue Fdwn Front Front vertical control sensor Frv+ Frv- Fup G200 G904 G904 (under left c-pillar) Gnd Hot at all times J/c 18 (right kick panel) J/c 20 (left quarter panel) J/c 23 (below driver's seat) J/c 6 (left kick panel) Ldwn Lft+ Lft- Lumbar support control switch Lup Mpx1 Mpx2 Msw P p/seat fuse 30a P18 P19 Passenger junction block (behind lower right end of dash) Power seat control switch Power seat ecu (under driver's seat) Power telescopic motor Power tilt motor Pvcc Rcl+ Rcl- Rclf Rclr Rear Rear vertical control sensor Recline control sensor Sgnd Sld+ Sld- Sldf Sldr Slide control sensor Ssfv Ssrl Ssrr Ssrs Sysb Tel lng Tel shrt Tem+ Tem- Tilt and telescopic ecu (behind left side of dash) Tilt and telescopic switch Tilt down Tilt up Tim+ Tim-
NAVIGATION Navigation Wiring Diagram for Lexus GS 300 1998 List of elements for Navigation Wiring Diagram for Lexus GS 300 1998: 41 (right side of instrument panel brace) g302 +b1 Acc Air conditioning system Aui+ Aui- Auo+ Auo- Braided C 1995 vftc Driver side junction block (behind lower left end of dash) Fl+ Fl- G311 (center of rear shelf) Grd1 Hot at all times Hot in accy or run Illum Instrument cluster system Instrument panel junction block (behind upper center of dash) Interior lights system Junction connector j/c 22 (under right c-pillar) Left front door speaker Memory systems Mpx1 Mpx2 Multi-display Navigation ecu (at right rear corner of luggage compt) Passenger side junction block (behind lower right end of dash) Pnk Radio & player Radio 2 fuse 15a Red Spd (vss) Stereo component amplifier (except nakamichi: behind right side of dash) (nakamichi: at right rear corner of luggage compt) Sync Tv fuse 15a Tx+ Tx- Tx1+ Tx1-
PASSIVE RESTRAINTS Passive Restraint Wiring Diagram for Lexus GS 300 1998 List of elements for Passive Restraint Wiring Diagram for Lexus GS 300 1998: 16 Driver side j/b (behind left kick panel) Ecu-ig fuse 15a F11 G311 (center of rear shelf) G904 (under left "c" pillar) Hot in run or start J/c 15 (behind left side of dash) J/c 23 (under driver's seat) J/c 24 (under front passenger's seat) J/c 7 (left kick panel) J/c 8 (left kick panel) Left buckle switch (in buckle) Left tension reducer solenoid (base of left "b" pillar) Passenger side j/b (right kick panel) Right buckle switch (in buckle) Right tension reducer solenoid (base of right "b" pillar)
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 2) for Lexus GS 300 1998 List of elements for Power Distribution Wiring Diagram (1 of 2) for Lexus GS 300 1998: 77 (behind lower right end of dash) passenger side junction block (canada) (on left side of engine compt, front of strut tower) engine room relay block 3 (on right side of engine compt, behind strut tower) engine room relay block 1 (usa) Abs 1 fuse 60a Abs 2 fuse 40a Air conditioning, headlights, memory systems Alt fuse 120a Alt-s fuse 5a Am2 fuse 15a Anti-lock brakes system Battery Body computer, door locks, power window systems Body computer, sound, instrument cluster, interior lights, trunk, tailgate, fuel doors, body computer, door locks systems Cds fan fuse 30a Cellular phones system Cooling fans system Defog fuse 30a Defogger system Defogger, body computer, engine controls, air conditioning systems Dimmer drl 2 relay Dome fuse 10a Drl 1 fuse (canada) 30a Drl 2 fuse 30a Ecu-b1 fuse 20a Ecu-b2 fuse 5a Efi fuse 25a Eng main relay Engine controls system Engine controls, computer data lines systems Etcs fuse 15a Exterior lights system Fan main fuse 50a From a engine room relay block 1 (diagram 1 of 2) H-lp cln fuse 30a H10 H12 Head- light relay Headlights system Heater fuse 50a Horn fuse 10a Horns, body computer systems Ig relay Instrument cluster, body computer, power windows, door locks, memory systems Left high beam head- light Left lower head fuse (canada) 15a Left upper head fuse (usa) 10a Left upper head fuse 15a Main fuse 40a Mir htr fuse 10a Mir relay Mpx-b fuse 10a Navigation system P fr door fuse 20a P p/ seat fuse 30a P rr door fuse 20a Power tops system Radio 1 fuse 20a Rdi fan fuse 30a Red Right high beam head- light Right lower head fuse (canada) 15a Right upper head fuse (usa) 10a Right upper head fuse 15a S/roof fuse 25a Seat htr fuse 20a Seats system Sound systems Starting/ charging system Tel fuse 15a To driver side junction block (diagram 2 of 2) To engine room relay block 1 (diagram 1 of 2) To ignition switch (diagram 2 of 2) Turn/ hazard fuse 10a Tv fuse 15a Wiper/ washer system Power Distribution Wiring Diagram (2 of 2) for Lexus GS 300 1998 List of elements for Power Distribution Wiring Diagram (2 of 2) for Lexus GS 300 1998: 56 (behind lower left end of dash) driver side junction block Acc Am 1 fuse 40a Anti-lock brakes, instrument cluster, computer data lines, headlights, engine controls, exterior lights shift interlock systems Anti-lock brakes, warning, instrument cluster, cellular phones, door locks, power windows, headlights, power tops, mirrors, electronic power steering, seats, memory, body computers systems Body computer, anti-lock brakes, engine controls, exterior lights systems Body computers, headlights, wiper/ washer systems Cicar- ette lighter Cig fuse 15a Computer data lines system D fr door fuse 20a D p/seat fuse 30a D rr door fuse 20a Defoggers, air conditioning engine controls, body computers systems Door locks, power windows systems E11 Ecu-ig fuse 15a Exterior lights system F10 Fog relay Fr fog fuse 15a From am2 fuse, engine room relay block (diagram 1 of 2) From engine room relay block 1 (diagram 1 of 2) Fuel opn fuse 10a G201 (upper right side of dash) Gauge fuse 10a H10 H12 Heater fuse 10a Ign fuse 5a Ignition switch Instrument cluster, wiper/ washer systems Interior lights, trans- missions, navigation, door locks, power windows systems Junction connector j/c 12 (behind combination meter) Junction connector j/c 15 (behind combination meter) Junction connector j/c 17 (upper right end of dash) Lock Obd fuse 7.5a Panel fuse 7.5a Pnk Power outlet Radio 2 fuse 15a Run Seats, memory systems Sound, body computer, air con- ditioning, instrument cluster, navigation, shift interlock systems Srs acc fuse 15a Srs-b fuse 5a Start Starter fuse 5a Starting/ charging system Stop fuse 15a Tail fuse 10a Tail relay Trunk, tailgate, fuel doors system Washer fuse 20a Wiper fuse 25a
POWER DOOR LOCKS Keyless Entry & Anti-Theft Wiring Diagram (1 of 3) for Lexus GS 300 1998 List of elements for Keyless Entry & Anti-Theft Wiring Diagram (1 of 3) for Lexus GS 300 1998: 56 (dash harn, right side of dash) A13 A15 A17 A19 B14 B15 Bdr Becu Body ecu 2 C12 C18 Computer data lines system Cpub Cty Ctye D fr door fuse 20a D rr door fuse 20a Driver door ecu (in driver's door) Driver side junction block (behind lower left end of dash) Ecu-ig fuse 15a Exterior lights system G200 Grd Gswo H10 H11 H13 Headlights system Hot at all times Hot in accy or run Hot in run or start Hrly Ile Interior lights system Junction connector j/c 10 (upper left end of dash) Junction connector j/c 13 (behind combination meter) Junction connector j/c 6 (left kick panel) Junction connector j/c 7 (left kick panel) Junction connector j/c 8 (left front door sill) Kul Left door lock control switch (power window master switch) Left front door courtesy switch Left front door lock motor, door key lock & unlock switch & door lock detection switch Lock Lock detect Lsw Lswe Mpx1 Mpx2 Mul Pwe Radio 2 fuse 15a Sig Trly Unlk Keyless Entry & Anti-Theft Wiring Diagram (2 of 3) for Lexus GS 300 1998 List of elements for Keyless Entry & Anti-Theft Wiring Diagram (2 of 3) for Lexus GS 300 1998: 34 Bdr Cpub Cty Ctye Diode (luggage compartment door open detection) (at left side of luggage compt) Engine hood courtesy switch Engine room relay block 1 (on right side of engine compt, behind strut tower) G102 (left front strut tower) G311 (center of rear shelf) G904 G904 (under left c-pillar) G905 Grd Hot at all times Junction connector j/c 20 (left quarter panel) Junction connector j/c 22 (under right c-pillar) Left rear door courtesy switch Left rear door ecu (in left rear door) Left rear door lock motor & door lock detection switch Lock detect Lsw Lswe Luggage compartment door courtesy switch & opener motor Luggage compartment door key unlock switch Mpx-b fuse 10a Mpx1 Mpx2 Power seat ecu (under driver's seat) Right rear door courtesy switch Right rear door ecu (in right rear door) Right rear door lock motor & door lock detection switch Sig W/ memory seats W/o memory seats Keyless Entry & Anti-Theft Wiring Diagram (3 of 3) for Lexus GS 300 1998 List of elements for Keyless Entry & Anti-Theft Wiring Diagram (3 of 3) for Lexus GS 300 1998: 79 (at right side of luggage compartment) wireless door lock ecu (left rear corner of engine compt) wireless door lock buzzer (under right c-pillar) junction connector j/c 22 A10 A12 A13 A15 A16 A18 A19 A22 A25 Acc B14 B15 Bdr Becu Body ecu 1 Bsub Bzr Bzr2 C12 C15 C16 C17 Combination meter Computer data lines system Cpub Cty Ctye Dle Dome fuse 10a Engine control system Exterior lights system F11 Front passenger door ecu (in passenger's door) G200 G201 (upper right side of dash) G905 Grd Gsw H11 H13 Haz Hcty Horn Horns system Hot at all times Ind Junction conenctor j/c 6 (left kick panel) Junction connector j/c 14 (behind combination meter) Junction connector j/c 15 (behind combination meter) Junction connector j/c 17 (upper right end of dash) Kul Lgcy Lock Lock detect Lsw Lswe Mpx1 Mpx2 Mul P fr door fuse 20a P rr door fuse 20a Passenger side junction block (behind lower right end of dash) Pnk Pws Rco Rda Right front door courtesy switch Right front door lock control switch Right front door lock motor, door key lock & unlock switch & door lock detection switch Rssi Security indicator (rheostat) Sig Theft deterrent horn (at right front of engine compt) Tkul Tr+ Unlk
POWER MIRRORS Electrochromic Mirrors Wiring Diagram for Lexus GS 300 1998 List of elements for Electrochromic Mirrors Wiring Diagram for Lexus GS 300 1998: 18 (behind left side of dash) j/c 15 (dash harn, right side of dash) i6 D10 Driver side j/b (behind left kick panel) Ec+ Ec- Ecu-ig fuse 15a F11 G201 (upper right side of dash) Gnd Hot in on or start Inner mirror J/c 7 (left kick panel) Left remote control mirror Passenger side j/b (behind right kick panel) R16 R17 Right remote control mirror Power Mirrors Wiring Diagram for Lexus GS 300 1998 List of elements for Power Mirrors Wiring Diagram for Lexus GS 300 1998: 61 (1998 - 2000) (2001) (left side of dash) j/c 13 Acc Bdr Becu Body ecu 1 Body ecu 2 Bsub Computer data lines system Cpub D fr door fuse 20a D22 D24 Dm+r Dmhr Dmvr Down Driver door ecu (in driver's door) Driver side j/b (behind lower left end of dash) Ecu-ig fuse 15a Engine room relay block 1 (on right side of engine compartment, behind strut tower) F11 F13 G200 G201 (upper right side of dash) Gnd Gsw Gswo H10 H11 Hot at all times Hot in on or start Hot in run or accy I6 (dash harn, right side of dash) J/c 10 (upper left end of dash) J/c 15 (left side of dash) J/c 17 (upper right end of dash) J/c 6 (left kick panel) J/c 7 (left kick panel) Left Left remote control mirror Mirb Mire Mirs Mpx-b fuse 10a Mpx1 Mpx2 Operation switch P fr door fuse 20a Passenger door ecu (in right front door) Passenger side j/b (behind lower right end of dash) Pm+r Pmhr Pmvr Radio 2 fuse 15a Remote control mirror switch Right Right remote control mirror Select switch Sig
POWER SEATS Driver Seat Wiring Diagram for Lexus GS 300 1998 List of elements for Driver Seat Wiring Diagram for Lexus GS 300 1998: 20 D p/seat fuse 30a Down Driver side j/b (behind left kick panel) Driver's lumbar support control switch Driver's power seat control switch Driver's seat front vertical motor (under seat) Driver's seat lumbar motor (in seatback) Driver's seat rear vertical motor (under seat) Driver's seat reclining motor (under seat) Driver's seat slide motor (under seat) Front G904 (under left c-pillar) Hot at all times J/c 23 (under driver's seat) Rear Reclining Slide Support lumbar Vertical front Vertical rear Heated Seats Wiring Diagram for Lexus GS 300 1998 List of elements for Heated Seats Wiring Diagram for Lexus GS 300 1998: 27 Alt fuse 120a Driver side junction block (behind lower left end of dash) Driver's seat heater (in seat back) Driver's seat heater (in seat cushion) Ecu-ig fuse 15a Engine room relay block 1 (on right side of engine compt, behind strut tower) Front passenger's seat heater (in seat back) Front passenger's seat heater (in seat cushion) G200 G201 (upper right side of dash) G311 (center of rear shelf) G904 (under left c-pillar) Hot at all times Hot in on or start Ignition relay J/c 10 (upper left end of dash) J/c 11 (behind combination meter) J/c 15 (upper left side of dash) J/c 23 (under driver's seat) J/c 24 (under passenger's seat) J/c 6 (left kick panel) J/c 7 (left kick panel) Left Passenger side junction block (behind lower right end of dash) Right Seat heater switch Seat htr fuse 20a Passenger Seat Wiring Diagram for Lexus GS 300 1998 List of elements for Passenger Seat Wiring Diagram for Lexus GS 300 1998: 21 Down Front G311 (center of rear shelf) Hot at all times J/c 24 (under passen -ger's seat) J/c 24 (under passenger's seat) P p/seat fuse 30a Passenger side j/b (behind left kick panel) Passenger's lumbar support control switch Passenger's power seat control switch Passenger's seat front vertical motor (under seat) Passenger's seat lumbar motor (in seatback) Passenger's seat rear vertical motor (under seat) Passenger's seat reclining motor (under seat) Passenger's seat slide motor (under seat) Rear Reclining Slide Support lumbar Vertical front Vertical rear
POWER TOP/SUNROOF Power Top/Sunroof Wiring Diagrams for Lexus GS 300 1998 List of elements for Power Top/Sunroof Wiring Diagrams for Lexus GS 300 1998: 23 25a B2 (body harn, top of right a-pillar) Body ecu 1 Close Down Driver side junction block (behind lower left end of dash) Ecu-ig fuse 15a F11 F13 G200 Hot at all times Hot in run or start J/c 10 (upper left end of dash) J/c 15 upper left side of dash) J/c 6 (left kick panel) J/c 7 (left kick panel) Moon roof control ecu (in front of moon roof opening) Moon roof control switch Mpx2 Open Passenger side junction block (behind lower right end of dash) Pnk S/roof fuse
POWER WINDOWS Power Window Wiring Diagram (1 of 3) for Lexus GS 300 1998 List of elements for Power Window Wiring Diagram (1 of 3) for Lexus GS 300 1998: 66 (dash harn, right side of dash) A11 A13 A15 A19 Auto B10 B11 B12 B13 B14 B15 B16 Bdr Becu Body ecu 2 C12 C18 Computer data lines system Cpub Cty Ctye D fr door fuse 20a D rr door fuse 20a Down Driver door ecu (in driver's door) Driver side junction block (behind lower left end of dash) Dt1 Dt2 Dt3 Ecu-ig fuse 15a G200 Grd Gswo H10 H11 Hot at all times Hot in accy or run Hot in run or start Junction connector j/c 10 (upper left end of dash) Junction connector j/c 13 (behind combination meter) Junction connector j/c 6 (left kick panel) Junction connector j/c 7 (left kick panel) Junction connector j/c 8 (left front door sill) Kul Left front door lock motor, door key lock & unlock switch & door lock detection switch Lmt Lock Lswe Mdn Mpx1 Mpx2 Mup Pls Power window master switch Pwe Radio 2 fuse 15a Red Sc1 Sc2 Sc3 Sgrd Sig Unlk Window lock switch Wlsw Power Window Wiring Diagram (2 of 3) for Lexus GS 300 1998 List of elements for Power Window Wiring Diagram (2 of 3) for Lexus GS 300 1998: 38 Auto Auto down Auto up Bdr Cpub Dwn E10 Engine room relay block 1 (on right side of engine compt, behind strut tower) G311 (center of rear shelf) G904 (under left c-pillar) G905 Grd Hot at all times Junction connector j/c 13 (behind combination meter) b Junction connector j/c 22 (under right c-pillar) Left front door courtesy switch Left front power window motor Left rear door ecu (in left rear door) Left rear power window control switch Lmt Mdn Mpx-b fuse 15a Mpx1 Mpx2 Mup Passenger side junction block (behind lower right end of dash) Pct1 Pcto Pls Power seat ecu (under driver's seat) Pwe Red Right rear door ecu (in right rear door) Right rear power window control switch Sgrd Sig W/ memory seats W/o memory seats Power Window Wiring Diagram (3 of 3) for Lexus GS 300 1998 List of elements for Power Window Wiring Diagram (3 of 3) for Lexus GS 300 1998: 66 (at right side of luggage compartment) wireless door lock ecu (under right c-pillar) junction connector j/c 22 A12 A15 A18 A19 Acc Auto Auto down Auto up B12 B13 B14 B15 B16 Bdr Becu Body ecu 1 Bsub C11 C13 C15 Computer data lines system Cpub Cty Ctye Dome fuse 10a Dwn F11 Front passenger door ecu (in passenger's door) G200 G201 (upper right side of dash) G905 Grd Gsw H11 Hot at all times Junction conenctor j/c 6 (left kick panel) Junction connector j/c 15 (behind combination meter) Junction connector j/c 17 (upper right end of dash) Kul Lmt Lock Lswe Mdn Mpx1 Mpx2 Mup P fr door fuse 20a P rr door fuse 20a Passenger side junction block (behind lower right end of dash) Pls Pnk Pwe Pws Rco Rda Red Right front door courtesy switch Right front door lock motor, door key lock & unlock switch & door lock detection switch Right front power window control switch Right front power window motor Rssi Sgrd Sig Unlk
RADIO Radio Wiring Diagrams, Except Nakamichi with Navigation for Lexus GS 300 1998 List of elements for Radio Wiring Diagrams, Except Nakamichi with Navigation for Lexus GS 300 1998: 75 A10 A11 A12 Acc Audio + Audio - Aui + Aui - Auo + Auo - B10 B12 Bus+ Bus- C10 Cd automatic changer (if equipped) Cdl+ Cdl- Cdr+ Cdr- Dome fuse 10a Driver side j/b (behind lower left end of dash) Engine room r/b 1 (on right side of engine compartment, behind strut tower) F11 Fl+ Fl- Fr+ Fr- G206 (right dash brace) Gnd H12 Hot at all times Hot in acc or on Illum Instrument panel j/b (behind upper center of dash) Interior lights system J/c 18 (behind right kick panel) Left front door speaker Left rear door speaker Multi- display Mute Navigation ecu (at right rear corner of luggage compartment) Passenger side j/b (behind lower right end of dash) Pnk Radio & player Radio fuse 1 20a Radio fuse 2 15a Red Right front door speaker Right rear door speaker Rl+ Rl- Rl-sp (+) Rl-sp (-) Rr+ Rr- Sgd4 Sgnd Shield Speaker Speaker relay Stereo component amplifier (behind right side of dash) Telephone transceiver Telephone transceiver & speaker relay (at right side of luggage compartment) Tlmt Tweeter Tx+ Tx- Tx1+ Tx1- Txm+ Txm- Wf+ Wf- Woofer speaker Radio Wiring Diagrams, Except Nakamichi without Navigation for Lexus GS 300 1998 List of elements for Radio Wiring Diagrams, Except Nakamichi without Navigation for Lexus GS 300 1998: 65 A10 A11 A12 Acc Audio + Audio - B10 B12 Bus+ Bus- C10 Cd automatic changer (if equipped) Cdl+ Cdl- Cdr+ Cdr- Dome fuse 10a Driver side j/b (behind lower left end of dash) Engine room r/b 1 (on right side of engine compartment, behind strut tower) F11 Fl+ Fl- Fr+ Fr- G206 (right dash brace) Gnd H12 Hot at all times Hot in acc or on Illum Instrument panel j/b (behind upper center of dash) Interior lights system J/c 18 (behind right kick panel) Left front door speaker Left rear door speaker Mute Passenger side j/b (behind lower right end of dash) Pnk Radio & player Radio fuse 1 20a Radio fuse 2 15a Red Right front door speaker Right rear door speaker Rl+ Rl- Rl-sp (+) Rl-sp (-) Rr+ Rr- Sgd4 Sgnd Shield Speaker Speaker relay Stereo component amplifier (behind right side of dash) Telephone transceiver Telephone transceiver & speaker relay (at right side of luggage compartment) Tlmt Tweeter Txm+ Txm- Wf+ Wf- Woofer speaker Radio Wiring Diagrams, Nakamichi for Lexus GS 300 1998 List of elements for Radio Wiring Diagrams, Nakamichi for Lexus GS 300 1998: 82 (right dash brace) g302 A10 A11 A12 A13 A14 Acc Acc1 Amp Amp+ Automatic cd changer B1+ B10 B11 B12 B13 B14 B2+ Beep C10 C11 C12 C13 Cdl+ Cdl- Cdr+ Cdr- Dl+ Dl- Dome fuse 10a Dr+ Dr- Driver side j/b (behind lower left end of dash) Engiine room r/b 1 (on right side of engine compartment behind strut tower) F11 Fl+ Fl- Fr+ Fr- G401 (right side of cargo area) Gnd Gnd1 Gnd4 Gnd5 Hot at all times Hot in acc or on Illum Instrument panel j/b (behind upper center of dash) Interior lights system J/c 18 (behind right kick panel) J/c 21 (above right rear wheelwell) J/c 22 Left front door speaker Left rear door speaker Mute Passenger's side j/b (behind lower right end of dash) Pnk Radio & player Radio fuse 1 20a Radio fuse 2 15a Red Right front door speaker Right rear door speaker Rl+ Rl- Rr+ Rr- Se2 Sgnd Shield Speaker Speaker relay Stereo component amplifier (at right rear corner of luggage compartment) Telephone transceiver Telephone transceiver & speaker relay (right side of cargo area) Tlmt Tweeter Txm+ Txm- Wf+ Wf- Woofer speaker
SHIFT INTERLOCKS
3.0L 3.0L, Shift Interlock Wiring Diagram for Lexus GS 300 1998 List of elements for 3.0L, Shift Interlock Wiring Diagram for Lexus GS 300 1998: 33 (upper right side of dash) 10a 15a A14 Acc At4 Atl B21 Body ecu 2 (in driver side junction box) Driver side junction block (behind lower left end of dash) Engine control module (at left side of engine compt, in ecu box) G200 G201 Gauge fuse H10 Hot in acc or run Hot in run or start J/c 1 (at left side of engine compartment, in ecu box) J/c 10 (upper left end of dash) J/c 13 (behind left side of dash) J/c 17 (behind right side of dash) J/c 17 (upper right end of dash) J/c 3-j/c 4 (at left side of engine compt, in ecu box) J/c 6 (left kick panel) Key interlock solenoid (behind left side of dash) Kls+ Nssd Nssl Park/neutral position switch (on transmission) Radio 2 fuse Shift lock control ecu (behind left side of dash) Slck Sls+
STARTING/CHARGING Charging Wiring Diagram for Lexus GS 300 1998 List of elements for Charging Wiring Diagram for Lexus GS 300 1998: 40 (1998) (1999 & 2000) (3.0l) (4.0l) A/c control assembly (behind center of dash) A1 k1 Acc Alt fuse 120a Alt-s fuse 5a Am1 fuse 40a Battery Battery ground C12 C13 Charge warning light Comb- ination meter Driver side junction block (behind left kick panel) E2 (3.0l) E7 (4.0l) Engine control module (at left side of engine compt, in ecu box) Engine room relay block 1 (on right side of engine compt, behind strut tower) F13 G200 (left kick panel) G201 (upper right side of dash) Gauge fuse 10a Generator Ignition switch J/c 1 (at left side of engine compartment in ecu box) J/c 17 (right side of dash) J/c 6 (left kick panel) Mpx+ Mpx- Mpx1 Mpx2 Multi-display Nca Off Start Tilt & telescopic ecu (behind left side of dash) W/ navigation system W/o navigation system Starting Wiring Diagram for Lexus GS 300 1998 List of elements for Starting Wiring Diagram for Lexus GS 300 1998: 29 (1998 & 1999) (2000) (2000) (1998 & 1999) (3.0l) (4.0l) 3.0l 4.0l Acc Am2 fuse 15a Battery Battery ground Driver side junction block (behind left kick panel) E5 e5 Engine control module (at left side of engine compartment, in ecu box) Engine room relay block 1 (on right side of engine compartment, behind strut tower) F10 G103 (right front strut tower) G116 (under abs/ trac/ vsc actuator) Ignition switch J/c 3, j/c 4 (at left side of engine compartment in ecu box) J/c 5 (in engine room r/b 2) J4 a Main fuse 40a Nca Off Park/neutral position switch (on transmission) Sta Start Starter Starter fuse 5a Starter relay
SUPPLEMENTAL RESTRAINTS Supplemental Restraint Wiring Diagram for Lexus GS 300 1998 List of elements for Supplemental Restraint Wiring Diagram for Lexus GS 300 1998: 54 (in driver side junction block) body ecu 2 (left side of dash) +sl +sr -sl -sr Acc Airbag squib (front passenger airbag assembly) Airbag squib (steering wheel pad) Center airbag sensor assembly (behind center of dash, forward of center console) Combination meter Data link connector 1 (left side of engine compt, behind ecu box) Data link connector 3 (behind left side of dash) Esl Esr Fsl Fsr G200 G202 Gsw Hot at all times Hot in run or acc Hot in run or start Ig2 Ign fuse 5a J/b 1 (left kick panel) J/c 6 (left kick panel) J/c 9 (behind glove box) Left front airbag sensor (left front of engine compt) Left side airbag sensor (lower left "b" pillar) Left side airbag squib Left side pretensioner Pl+ Pl- Pnk Pr+ Pr- Right front airbag sensor (right front of engine compt) Right side airbag sensor (lower right "b" pillar) Right side airbag squib Right side pretensioner Sfl+ Sfl- Sfr+ Sfr- Sil Spiral cable Srs warning indicator Srs-acc fuse 15a Srs-b fuse 5a Ssl Ssr Vupl Vupr
TRANSMISSION A/T Wiring Diagram for Lexus GS 300 1998 List of elements for A/T Wiring Diagram for Lexus GS 300 1998: 72 (engine harn, left side of engine) (front side of intake manifold) g131 (left side of engine compt) j/c 1 (left side of engine compt) j/c 3, j/c 4 +b1 A/t indicator switch (park/neutral position switch (on top left side of transmission) A/t oil Accelerator position sensor (left rear of engine) Batt Computer data lines system Data link connector 1 (left side of engine compt) Driver side j/b (lower left end of dash) E01 E02 E03 Efi fuse 25a Efi relay Electronic controlled transmission solenoid Engine control module (left side of engine compt) Engine coolant temperature sensor (top left front of engine) Engine room r/b 1 (right side of engine compt) G116 (under abs/ trac/vsc actuator) Gauge fuse 10a Hot at all times Hot in on or start Ign fuse 5a Igsw J/c 1 (left side of engine compt) J/c 11 (left side of dash) J/c 14 (left side of dash) J/c 17 (right side of dash) J/c 3, j/c 4 (left side of engine compt) J/c 7 (left side of dash) J/c 9 (left side of dash) Mpx1 Mpx2 Mrel Nco+ Nco- No. 1 No. 2 No. 3 No. 4 O/d direct clutch speed sensor (on trans) Oil Pnk R n Red Shift lock control ecu (near gear selector) Sln Sln+ Sln- sln- Slt Slt+ Slt- Slu Slu+ Slu- Sp2+ Sp2- Starting/ charging system Stop fuse 15a Stop light switch (on brake pedal bracket) Stp Temp Throttle position sensor (on throttle body assembly) Thw Vehicle speed sensor (on trans) Vpa Vpa2 Vta Vta2
TRUNK, TAILGATE, FUEL DOOR Trunk, Tailgate, Fuel Door Wiring Diagrams for Lexus GS 300 1998 List of elements for Trunk, Tailgate, Fuel Door Wiring Diagrams for Lexus GS 300 1998: 36 (in passenger side junction block) Acc Becu Body ecu 1 Bsub Driver side junction block (behind left kick panel) Ecu-ig fuse 15a Engine room relay block 1 (on right side of engine compartment, behind strut tower) F11 F13 Fuel lid opener motor (at left side of luggage compt) Fuel lid opener switch Fuel opn fuse 10a G200 G201 (right side of dash) G402 (above left rear wheelwell) G904 (under left "c" pillar) Gnd H10 Hot at all times Hot in accy or run Hot in on or start J/c 10 (upper left end of dash) J/c 13 (left side of dash) J/c 15 (left side of dash) J/c 20 (above left rear wheelwell) J/c 6 (left kick panel) J/c 7 (left kick panel) Luggage compartment door opener motor Luggage compartment door opener switch Mpx-b fuse 10a P fr door fuse 20a Passenger side junction block (behind right kick panel) Radio 2 fuse 15a Tr+ Tsw
WARNING SYSTEMS Warning System Wiring Diagrams for Lexus GS 300 1998 List of elements for Warning System Wiring Diagrams for Lexus GS 300 1998: 67 (1998) (1999 & 2000) (behind left side of dash) (under passenger's seat) j/c 24 Acc Bdr Becu Body ecu 1 Body ecu 2 Bsub C p u C12 C13 Combination meter Computer data lines Cpub Cty Ctye D fr door fuse 20a D22 D23 D24 Dbkl Driver door ecu Driver's side junction block Ecu-ig fuse 15a Engine room relay block 1 F11 F13 G200 G201 (upper right side of dash) G311 (center of rear shelf) G904 (under left c-pillar) Gauge fuse 10a Gnd Gsw Gswo H10 H11 Hot at all times Hot in acc or run Hot in run or start I6 (dash harn, right side of dash) Instrument panel junction block J/c 10 (behind left side of dash) J/c 13 (behind combination meter) J/c 15 (upper left side of dash) J/c 17 (upper right end of dash) J/c 23 (under driver's seat) J/c 6 (left kick panel) J/c 7 (left kick panel) J/c 9 Ksw Left buckle switch Left front door courtesy switch Mpx-b fuse 10a Mpx1 Mpx2 P fr door fuse 20a Passenger side junction block Passenger side seat belt warning light (in clock) Pbkl Radio fuse 10a Right buckle switch Seat belt ind Seat belt warning occupant detection sensor Sig Unlock warning switch (behind left side of dash)
WIPER/WASHER Headlamp Washer Wiring Diagram, Canada for Lexus GS 300 1998 List of elements for Headlamp Washer Wiring Diagram, Canada for Lexus GS 300 1998: 30 Auto Body ecu 2 (in driver side junction block) Canada only Combination switch Daytime running light main relay Diode (behind right side of dash) Driver side junction block (behind lower left end of dash) Drl E4 (engine harn, under ecu box) Engine room relay block 1 (on right side of engine compt, behind strut tower) G102 (left front strut tower) G200 H-lp fuse 30a Head Headlight cleaner control relay (at left front corner of engine compt, behind headlight) Headlight cleaner motor (at left front corner of engine compt, behind headlight) Headlight cleaner switch Headlights system Hot at all times Hot in on or start Hrly I6 (dash harn, right side of dash) J/c 10 (upper left end of dash) J/c 12 (upper left side of dash) J/c 14 (upper left side of dash) J/c 6 (left kick panel) Light control switch Main fuse 40a Tail off Washer fuse 20a Wiper/Washer Wiring Diagram for Lexus GS 300 1998 List of elements for Wiper/Washer Wiring Diagram for Lexus GS 300 1998: 26 C12 C13 Canada Combination meter Combination switch Driver side junction block (behind lower left end of dash) Front wiper motor (on left side of firewall) G102 (left front strut tower) G200 G202 (upper left side of dash) Gauge fuse 10a Hot in run or start Int J/c 10 (upper left end of dash) J/c 12 (upper left side of dash) J/c 6 (left kick panel) Off Solid state Usa Washer fuse 20a Washer level warning light Washer level warning switch (at left front corner of engine compt) Washer motor (right front of eng compt) Washer switch Wiper fuse 25a Wiper switch
