Diagram sections — 33 (121 total)
AIR CONDITIONING ANTI-LOCK BRAKES ANTI-THEFT BODY CONTROL MODULES COMPUTER DATA LINES COOLING FAN CRUISE CONTROL DEFOGGERS ELECTRONIC POWER STEERING ELECTRONIC SUSPENSION 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 INTERLOCK SUPPLEMENTAL RESTRAINTS TRANSMISSION TRUNK, TAILGATE, FUEL DOOR WARNING SYSTEMS WIPER/WASHER
AIR CONDITIONING Automatic A/C Wiring Diagram (1 of 2) for Lexus GS 450h 2008 List of elements for Automatic A/C Wiring Diagram (1 of 2) for Lexus GS 450h 2008: 68 (under lower right side of dash) blower motor A/c amplifier (behind right side of dash) A/c fuse 7.5a A/c pressure sensor (left front of engine compt) A/c room temperature sensor (under center of dash) A/c w/p fuse 7.5a A10 A11 A27 A4 (right rear of engine compt) Automatic light control sensor (under upper center of dash) B1 (right front of engine compt) Bllh Blrh Blw Computer data lines system D14 D15 Defogger system Dgs Dgs1 Ecu-ig rh fuse 10a Engine coolant temperature sensor (top right side of engine) Engine room j/b 1 (left side of engine compt) Fdef G11 G15 Gnd Heater fuse 50a Hot at all times Hot in on or start Ig+ J/c a10 & a11 (left side of engine compt) K1 (behind left kick panel) K2 (under left side of floor console) K51 K52 Left center j/b (behind right side of dash) Left cowl side j/b (behind left end of dash) Lh-ig fuse 10a Lout Mpx+ Mpx- Pnk Pre Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Rout S5-1 S5-2 S5-4 Seat heater switch Seats system Sg-1 Sg-2 Sg-4 Sg-6 Smog ventilation sensor (right front of engine compt) Solar sensor Svs5 Svsg Sw 4 Sw 5 Tsd Tsl Tsp Tsr Automatic A/C Wiring Diagram (2 of 2) for Lexus GS 450h 2008 List of elements for Automatic A/C Wiring Diagram (2 of 2) for Lexus GS 450h 2008: 66 (left front of engine compt) cooling fan ecu (left rear of engine) e1 (left side of engine compt) engine control module (left side of engine compt) hybrid vehicle control ecu (right front of engine compt) water pump motor (a/c) +b1 A/c amplifier (behind right side of dash) A/c blower assembly (behind right side of dash) A/c evaporator temperature sensor A/c w/p relay A10 A11 A4 (right rear of engine compt) A53 A54 Acpb Acpe Ambient temperature sensor (behind left side of front fascia) B1 (right front of engine compt) Bbus Bus Busg Can+ Can- Canh Canl Clk Compressor motor (left front of engine) Computer data lines system Damper servo motor (air inlet) Damper servo motor (air mix driver side) Damper servo motor (air mix front passenger side) Damper servo motor (air vent mode) Damper servo motor (cool air bypass) Dim Dout E10 E83 E84 E85 Engine room j/b 1 (left side of engine compt) Engine room r/b 1 (left side of engine compt) Eti Fan main relay Gnd Hot at all times Ig1 Inverter (right rear corner of engine compt) Ite J/c a10 & a11 (left side of engine compt) J/c a50 (left side of engine compt) J/c a8 & e10 (left side of engine compt) Main fan motor Rad fan fuse 60a Red Rfc Sg-10 Smart connector housing color (black) Smart connector housing color (green) Smart connector housing color (natural) Smart connector housing color (red) Stb Stbi Sub fan motor Tam Thw
ANTI-LOCK BRAKES Anti-lock Brakes Wiring Diagram (1 of 4) for Lexus GS 450h 2008 List of elements for Anti-lock Brakes Wiring Diagram (1 of 4) for Lexus GS 450h 2008: 78 (left rear corner of engine compt) A1 (left rear of engine compt) A13 A14 A41 A42 Abs 2 fuse 30a Abs main1 fuse 10a Abs main1 relay Abs main2 fuse 10a Abs main2 relay Abs main3 fuse 10a Abs motor fuse 30a Abs mtr1 relay Abs mtr2 relay Brake pedal stroke sensor (top of brake pedal assembly) Brake stroke simulator cylinder (left rear of engine compt) Brake stroke simulator cylinder short connector (left rear corner of engine compt) Bs01 Bs03 Bs1 Bsr Cbi1 Computer data lines system Cty+ Di1 Do1 Ena Engine room j/b 1 (left side of engine compt) Engine room r/b 1 (left side of engine compt) Engine room r/b 3 (left rear of engine compt) Fail Fr+ Fr- Fra+ Fra- Fro Frr+ Frr- Gnd Hot at all times Ig1 J/c a32 (behind left end of dash) Left rear speed sensor (at left rear wheel assembly) Mpx-b fuse 7.5a Mr1 Mtt Pac1 Parking brake switch (behind left side of dash) Pck1 Pfr Pmc1 Pnk Prl R1+ R1- R3+ Red Right front speed sensor (at right front wheel assembly) Rl+ Rl- Rla+ Rla- Rlr+ Rlr- Scss Skg Skid control ecu (left rear of engine compt) Sks Sks1 Sks2 Smc1 Sp1 Stp Vbz Vcm Vcsk Vsc warning buzzer (behind left side of dash) Anti-lock Brakes Wiring Diagram (2 of 4) for Lexus GS 450h 2008 List of elements for Anti-lock Brakes Wiring Diagram (2 of 4) for Lexus GS 450h 2008: 56 (behind left kick panel) k1 (behind right kick panel) k4 (on brake pedal bracket) stop lamp switch +bc A24 A25 A28 A33 Body ecu Brake fluid level warning switch (in brake fluid reservoir) Cty Cty+ D11 D12 D23 D29 Ecu-ig lh fuse 10a Ena Fail Gauge fuse 7.5a Gnd Headlamp swivel ecu (behind left kick panel) Hot at all times Hot in on or start Hot w/ ig2 relay energized Ig1 Ign fuse 10a J/c a17 (left rear corner of engine compt) J/c a32 & a33 (behind left end of dash) J/c u22 & u23 (right front of luggage compt) J/c u25 (right front of luggage compt) J13 L10 Left center j/b (behind right side of dash) Left cowl side j/b (behind left end of dash) Left front door courtesy switch (in left "b" pillar) Left front speed sensor (at left front wheel assembly) Lh- ig2 relay M13 M14 Out1 Out2 Pkb Pkbo Pnk Red Rh- ig1 relay Rh-ig fuse 7.5a Right cowl side j/b (behind right end dash) Right rear speed sensor (at right rear wheel assembly) Spdl Spdr Stop sw fuse 7.5a U2 (in right "c" pillar) U22 U23 Anti-lock Brakes Wiring Diagram (3 of 4) for Lexus GS 450h 2008 List of elements for Anti-lock Brakes Wiring Diagram (3 of 4) for Lexus GS 450h 2008: 47 (at left side of engine compt) engine control module (behind left end of dash) distance control ecu (behind left side of dash, near steering column) steering sensor (behind right end of dash) absorber control ecu (behind right end of dash) power source control ecu (right rear corner of engine compt) power steering ecu (under front of center floor console) yaw rate sensor (under glove box) steering control ecu +bo A10 A40 Abs ind Bat Brake ind Caih Cail Can+ Can- Canh Canl Combination meter Computer data lines system E13 Ecb or vsc ind Gateway ecu (behind right end of dash) Ig+ Ig1d Interior lights system J15 K31 K4 (behind right kick panel) K70 Left center j/b (behind right side of dash) Master ind Mpi1 Mpi2 Mpx+ Mpx- Pnk Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Slip Speedometer Ss1+ Ss1- Telltale lamp assembly Anti-lock Brakes Wiring Diagram (4 of 4) for Lexus GS 450h 2008 List of elements for Anti-lock Brakes Wiring Diagram (4 of 4) for Lexus GS 450h 2008: 72 (left rear corner of engine compt) brake actuator A1 (left rear of engine compt) A10 A15 A2 (left rear corner of engine compt) Bm1 Bm2 Bs02 Bs1 Bs2 Canh Canl Cbi2 Computer data lines system Csw Di2 Do2 E13 Fl+ Fl- Fla+ Fla- Flo Flr+ Flr- Fra+ Fra- Frr+ Frr- Gnd1 Gnd2 Grd4 I15 Ig2 J/c a17 (left rear corner of engine compt) K4 (behind right kick panel) Lbl Mr2 Mtt Nca Pac1 Pck2 Pfl Pfr Pkb Pmc1 pck1 Pmc2 Pnk Prl Prr R2+ R2- R4+ Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Rla+ Rla- Rlr+ Rlr- Rr+ Rr- Rra+ Rra- Rrr+ Rrr- Skid control ecu (left rear of engine compt) Smc1 Smc2 Traction control switch Vcm Vcm2
ANTI-THEFT Anti-theft Wiring Diagram (1 of 6) for Lexus GS 450h 2008 List of elements for Anti-theft Wiring Diagram (1 of 6) for Lexus GS 450h 2008: 50 A30 A32 Bdcy Bdr Body ecu Computer data lines system Cpub D11 Engine room r/b 1 (left side of engine compt) Gnd Hot at all times J/c a32 & a33 (behind left end a33 of dash) J/c v27 (left front of luggage compt) J12 J18 J19 J20 K2 (under left side of center console) Kul Left cowl side j/b (behind left end of dash) Left front door ecu (in driver's door) Left front door lock assembly (rear of left front door) Left rear door ecu (in left rear door) Left rear door lock assembly (rear of left rear door) Lh fr door fuse 20a Lh ig fuse 10a Lh ig relay 1 Lh rr door fuse 20a Lsw Lswe Luggage compartment door striker switch (rear center of luggage compt) Luggage room j/b (left side of luggage compt) M10 Mpx-b fuse 7.5a Mpx1 Mpx2 Mpx4 Oscb Osce Pnk Power window master switch Red Sel1 Sele Sgnd Sig Sigj Trg+ V1 (under driver's seat) V2 (left side of luggage compt) Anti-theft Wiring Diagram (2 of 6) for Lexus GS 450h 2008 List of elements for Anti-theft Wiring Diagram (2 of 6) for Lexus GS 450h 2008: 61 (in right "c" pillar) u2 (right side of luggage compt) certification ecu +b1 A12 Acc Ant Ant1 Ant2 Asel B12 Cg1b Cg2b Cg3b Cg4b Clg Clg1 Clg2 Clg3 Clg4 Clgb Computer data lines system Data Door control receiver (right rear of luggage compt) Electrical key antenna (base of right "c" pillar) Gnd J/c u25 (right front of luggage compt) Left center j/b (behind left side of dash) Left front door electrical key oscillator (w/ wireless door lock control) (in left front door) Left front door outside handle Left rear door electrical key oscillator (w/ wireless door lock control) (in left rear door) Left rear door outside handle Mpx1 Mpx2 Pnk Rc0 Rda Red Right center j/b (behind right side of dash) Right front door electrical key oscillator (w/ wireless door lock control) (in right front door) Right front door outside handle Right rear door electrical key oscillator (w/ wireless door lock control) (in right rear door) Right rear door outside handle Rssi Sel Sel1 Sel2 Sel3 Sel4 Sen1 Sen2 Sen3 Sen4 Sens Sgt Sgt2 Trg+ Trg- U2 (in right "c" pillar) U28 U33 W/ wireless door lock control Anti-theft Wiring Diagram (3 of 6) for Lexus GS 450h 2008 List of elements for Anti-theft Wiring Diagram (3 of 6) for Lexus GS 450h 2008: 63 A2 (left rear corner of engine compt) A39 Acc fuse 7.5a Batb Bdr Becu Body ecu Bzr Computer data lines system Cpub D12 D14 D22 Dcty Dle Door lock control switch Gnd Hot at all times Hot w/ acc relay energized J/c u22 & u23 (right front of luggage compt) J13 J19 J20 J23 K4 (behind right kick panel) Left center j/b (behind left side of dash) Left front door courtesy switch (in left "b" pillar) Lock Lsw Lswe M13 Mpx1 Mpx2 Oscb Osce Pml Pmul Pnk Pws Rcty Red Rh ecu-ig fuse 10a Rh fr door fuse 20a Rh ig fuse 7.5a Rh ig relay 1 Rh ig relay 2 Rh rr door fuse 20a Right cowl panel j/b (behind right end of dash) Right front door ecu (in right front door) Right front door lock assembly (rear of right front door) Right rear door courtesy switch (in right "c" pillar) Right rear door ecu (in right rear door) Right rear door lock assembly (rear of right rear door) Security fuse 7.5a Sel1 Sele Sig Trg+ U1 (under front passenger's seat) U22 U23 Unlock Wireless door lock buzzer (left rear corner of engine compt) Anti-theft Wiring Diagram (4 of 6) for Lexus GS 450h 2008 List of elements for Anti-theft Wiring Diagram (4 of 6) for Lexus GS 450h 2008: 68 (under center floor console) air bag sensor assembly center A11 A26 A39 A53 Anti-lock brakes system Body ecu Buckle switch Ca1h Ca1l Canh Canl Ccty Cls Combination meter Computer data lines system Cty Driver's side front seat inner belt (under driver seat) E10 Engine control module (left side of engine compt) Exterior lights system F10 Gateway ecu (behind right end of dash) Gnd2 Haz Ind Ind lamp security J/c v30 & y1 K2 (under left side of floor console) K4 (behind right kick panel) K44 K46 K67 K68 Ksw Lbe+ Lbe- Lcls Lcm+ Lcm- Lcty Left cowl side j/b (behind left end of dash) Left rear door courtesy switch (in left "c" pillar) Lopn Lpsw Luggage compartment door closer Luggage compartment door opener switch Mpd1 Mpd2 Mpi1 Mpi2 Mpl1 Mpl2 Mpx+ Mpx- Mpx1 Mpx2 Multi-display Opn Pcty Pnk Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Right front door courtesy switch Security horn (right front of engine compt) V16 V30 Anti-theft Wiring Diagram (5 of 6) for Lexus GS 450h 2008 List of elements for Anti-theft Wiring Diagram (5 of 6) for Lexus GS 450h 2008: 65 (at left "c" pillar) rear seat electrical key oscillator (behind right side of dash) right center j/b (center rear of luggage compt) outside luggage room electrical key oscillator (left side of luggage compt) inside luggage room electrical key oscillator (rear of center floor console) console electrical key oscillator A13 A15 A2 (left rear corner of engine compt) Agnd B1 (right front of engine compt) C15 C21 C31 Certification ecu (right side of luggage compt) Cg5b Cg6b Cg7b Cg8b Clg5 Clg6 Clg7 Clg8 Clgb Code Com Computer data lines system D11 Engine hood courtesy switch (front center of engine compt) Engine room j/b 1 (left side of engine compt) Engine room r/b 1 (left side of engine compt) Front controller Gnd Horn (high) (in front of right side of radiator) Horn (low) (in front of left side of radiator) Horn fuse 10a Horn relay Hot at all times Ig2 relay Inds Indw J/c a11 (left side of engine compt) J/c v27 (left front of luggage compt) J/c v30 & y1 J/c y6 (center rear of luggage compt lid) K4 (behind right kick panel) Lin Luggage compartment door lock cylinder Luggage room j/b (left side of luggage compt) Luggage room j/b ecu Mpx1 Mpx2 Pgrd Pnk Power switch Red Right cowl side j/b (behind right end of dash) Ss1 Ss2 Swil Tkul Txct U28 V2 (left side of luggage compt) V30 Vc5 Anti-theft Wiring Diagram (6 of 6) for Lexus GS 450h 2008 List of elements for Anti-theft Wiring Diagram (6 of 6) for Lexus GS 450h 2008: 72 (behind right kick panel) k4 (behind right side of dash) right center j/b A10 A11 A12 A54 Accd Am1 Am2 Am2 fuse 7.5a C12 C15 Computer data lines system D11 D15 D19 D22 D23 E13 Efii Efio Gnd Gnd2 H12 Hot at all times Hot w/ ig2 relay energized Hybrid vehicle control ecu (left side of engine compt) I12 Id code box (behind center of dash) Ig1d Ig2 Ig2d Ige Ign fuse 10a Imi Imo Inds Indw Instrument cluster system K1 (behind left kick panel) K2 (under left side of floor console) Left center j/b (behind left side of dash) Left cowl side j/b (behind left end of dash) Lin Lin1 Mpx1 Mpx2 Pnk Power distribution system Power source control ecu (behind right end of dash) Rdy Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Security fuse 7.5a Sgrd Shift lock control ecu (under center console, near selector lever) Sksw Slp Slp1 Slr+ Spd Ssw1 Ssw2 St2 Steering lock ecu (top right side of steering column) Stop lamp switch (on brake pedal bracket) Stop sw fuse 7.5a Stp Str lock fuse 25a Stsw Swil
BODY CONTROL MODULES Body ECU Wiring Diagram (1 of 2) for Lexus GS 450h 2008 List of elements for Body ECU Wiring Diagram (1 of 2) for Lexus GS 450h 2008: 85 (behind right end of dash) (behind right end of dash) gateway ecu (right front of luggage compt) mayday ecu (top right side of steering column) tilt & telescopic ecu A10 A11 A15 A20 A24 A26 A32 A33 A39 Acc Acc fuse 7.5a Altb Anti-lock brakes system Anti-theft system Batb Becu Body ecu (cowl side j/b rh) Body ecu (cowl side j/b rh) (behind right end of dash) Bzr C6 red Cill Cltb Clte Clts D11 Data link connector 3 (under left side of dash) Dcty Door locks system Electronic power steering & memory systems Engine room r/b 1 (left side of engine compt) Exterior lights system Fspt Gnd2 Ground distribution system Gsw Haz Hdlo Head Headlights system Hot at all times Hot in on or acc Hot in on or start Hrly Ind Instrument cluster system Interior lights system Isif J/c a32 & a33 (behind left end of dash) J21 K22 K4 (behind right kick panel) K67 K68 L10 Lcty Mirrors system Mpl2 Mpx-b fuse 7.5a Mpx1 Mpx2 Navigation system Obde Pcty Pkb Pkbo Pnk Rcty Red Rh ecu-ig fuse 10a Rh fr door fuse 20a Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) S+b Sil Ssw1 Ti & te fuse 20a Trunk, tailgate, fuel doors system Tsw U45 Windshield wiper switch assembly Wiper/washer system Body ECU Wiring Diagram (2 of 2) for Lexus GS 450h 2008 List of elements for Body ECU Wiring Diagram (2 of 2) for Lexus GS 450h 2008: 59 A14 A15 A16 A29 A30 A32 A33 Back Bdcy Body ecu (cowl side j/b lh) (behind left end of dash) C31 Ccty Engine controls system Engine room r/b 1 (left side of engine compt) Exterior lights system Fr wip fuse 30a Fuel Gnd Headlamp swivel ecu (behind left kick panel) Hot at all times Hot in on or start Ile Ill Interior lights system J/c a32 & a33 (behind left end of dash) J/c v26 & v27 (left front of luggage compt) K1 (behind left kick panel) K2 (under left side of floor console) Lcls Lcm+ Lcm- Lcty Left cowl side j/b (behind left end of dash) Left front seat position control ecu & switch (left side of driver's seat) Lgcy Lh-ig fuse 10a Lopn Lpsw Luggage room j/b (left side of luggage compt) Luggage room j/b ecu Mpx-b fuse 7.5a Mpx1 Mpx2 Mpx4 Mpxb Navigation system Pnk Rcty Red Rfrl S/m S/s Sgnd Trk opn fuse 10a Trunk, tailgate, fuel doors system V26 V27 Wig Wiper/washer system Front Controller Wiring Diagram for Lexus GS 450h 2008 List of elements for Front Controller Wiring Diagram for Lexus GS 450h 2008: 29 (behind left kick panel) headlamp swivel ecu A2 (left rear corner of engine compt) A29 Engine room j/b 1 (left side of engine compt) Engine room r/b 1 (left side of engine compt) Exterior lights system Fr tail fuse 10a Front controller Headlights system Horn fuse 10a Horn relay Horns system Hot at all times Hot in on or start Interior lights system J/c a11 (left side of engine compartment) J/c a32 (behind left end of dash) K22 Left cowl side j/b (behind left end of dash) Lh ecu-ig fuse 7.5a Mpx-b fuse 7.5a Mpx2 Upr h-lp fuse 20a Windshield wiper switch assembly Wiper/washer system Z10 Z11 Z12 Z13 Luggage Room J/B ECU Wiring Diagram for Lexus GS 450h 2008 List of elements for Luggage Room J/B ECU Wiring Diagram for Lexus GS 450h 2008: 56 +bl +br A10 A15 A22 A32 Bck1 Behind left cowl side j/b (behind left end of dash) C10 C15 C21 C24 C26 C27 C31 C32 Computer data lines system Ecub Engine room r/b 1 (left side of engine compt) Exterior lights system Gateway ecu (behind right end of dash) Hot at all times Hot in on or start Interior lights system J/c a32 & a33 (behind left end of dash) J/c v26 & v27 (left front of luggage compt) L stop lp fuse 10a Lce1 Luggage room j/b (left side of luggage compt) Luggage room j/b ecu Mpl1 Mpx-b fuse 7.5a Mpx1 Mpx2 Pgnd Pnk Power windows system R stop lp fuse 10a Red Rev Rr tail fuse 10a Rr+b Rr-b fuse 10a Rr-ig1 fuse 10a Rss Stp1 Stp2 Stp3 Til1 Til2 Tkul Tlin Trunk/tailgate, fuel doors system V2 (left side of luggage compt) V26 V27
COMPUTER DATA LINES Data Link Connector Wiring Diagram for Lexus GS 450h 2008 List of elements for Data Link Connector Wiring Diagram for Lexus GS 450h 2008: 62 A10 A13 A23 A32 A33 A53 A54 Absorber control ecu (behind right end of dash) Air bag sensor assembly center (under center floor console) B10 Bat Body ecu C10 Canh Canl D12 D14 D26 D28 D30 Data link connector 3 (under left side of dash) Dia E1 (left rear of engine) E10 E11 E13 Engine control module (left side of engine compt) F13 Front stabilizer control ecu (right front corner of engine compt) G13 Gateway ecu (behind right end of dash) High/low bus circuit Hot at all times Hybrid vehicle control ecu (left side of engine compt) J/c a32 & a33 (behind left end of dash) J/c e10 & a8 (left side of engine compt) K12 K2 (under left side of floor console) K44 K46 K67 K70 L13 Left center j/b (behind left side of dash) Left cowl side j/b (behind left end of dash) Mayday ecu (right front of luggage compt) Multi-display Obd fuse 7.5a Obd2 Occupant classification ecu (under front passenger's seat) Pnk Power steering ecu (right rear corner of engine compt) Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Sil Skid control ecu (left rear of engine compt) Steering control ecu (under glove box) Tac Tach U46 Wfse High/Low Bus Wiring Diagram (1 of 4) for Lexus GS 450h 2008 List of elements for High/Low Bus Wiring Diagram (1 of 4) for Lexus GS 450h 2008: 79 (behind right kick panel) k4 (top right side of steering column) tilt & telescopic ecu A10 A15 A20 A21 A26 A32 A34 Acc Acc fuse 7.5a B10 Batt Body ecu Ca1h Ca1l Can+ Can- Canh Canl Combination meter D14 D18 D27 D29 Data link connector 3 (under left side of dash) Distance control ecu (behind left end of dash) E10 E13 Engine room j/b 1 (left side of engine compt) Engine room r/b 1 (left side of engine compt) Front controller G10 Gateway ecu (behind right end of dash) Gnd Gtx+ Gtx- Hot at all times Hot in on or acc Hybrid vehicle control ecu (left side of engine compt) I10 J/c a32 & a33 (behind left end of dash) a33 J/c k93 (behind left kick panel) J10 J21 K10 K15 K2 (under left side of floor console) K31 K68 Left center j/b (behind left side of dash) Left cowl side j/b (behind left end of dash) Mayday ecu (right front of luggage compt) Mpd1 Mpd2 Mpi1 Mpi2 Mpl1 Mpl2 Mpx+ Mpx- Mpx-b fuse 7.5a Mpx1 Mpx2 Nca Pnk Red Rh ecu-ig fuse 10a Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Right front seat position control ecu & switch (right side of front passenger's seat) Right ig1 relay Seat belt control ecu (left side of luggage compt) Sil Skid control ecu (left rear of engine compt) Steering sensor (behind left side of dash, near steering column) U45 Windshield wiper switch assembly Yaw rate sensor (under front of center floor console) High/Low Bus Wiring Diagram (2 of 4) for Lexus GS 450h 2008 List of elements for High/Low Bus Wiring Diagram (2 of 4) for Lexus GS 450h 2008: 60 (behind right end of dash) absorber control ecu (right rear corner of engine compt) power steering ecu (right rear corner of luggage compt) stereo component amplifier (under glove box) steering control ecu (under left side of floor console) k2 A1 (left rear of engine compt) A15 A40 Atx+ Atx- B15 C15 Can+ Can- Canh Canl Cmp+ Cmp- D11 D15 E12 J/c a32 (behind left end of dash) J/c a63 (behind left end of dash) J/c k2, k3, k4, k6 k7 & k8 (behind left kick panel) J/c k74, k75, k76, k79 & k81 (behind right kick panel) J/c k91 (behind right kick panel) J/c k92 (behind right kick panel) J/c k94 (behind left kick panel) K4 (behind right kick panel) K46 K47 K53 K54 K56 K70 K74 K75 K76 K79 K80 K81 L15 Left center j/b (behind left side of dash) Left cowl side j/b (behind left end of dash) Multi-display Nca Pnk Radio receiver assembly Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Sld St-plug Tx+ Tx- Txm+ Txm- U29 W/ active stabilizer suspension W/o active stabilizer suspension High/Low Bus Wiring Diagram (3 of 4) for Lexus GS 450h 2008 List of elements for High/Low Bus Wiring Diagram (3 of 4) for Lexus GS 450h 2008: 49 (behind left end of dash) j/c a32 (behind left end of dash) j/c a63 (behind right side of dash) (left front of luggage compt) j/c v37 & v38 (left front of luggage compt) j/c v39 (left rear of engine compt) a1 (right front corner of engine compt) (w/ active stabilizer suspension) front stabilizer control ecu (right side of luggage compt) rear stabilizer control ecu A53 C13 C15 Can+ Can- Canh Canl D11 D13 Engine control module (left side of engine compt) F12 G11 J/c a59 (right side of engine compt) J/c k83, k84, k85, k86 & k87 (behind right side of dash) J/c k95 (behind right side of dash) J/c k96 J/c u25 (right front of luggage compt) J/c v37 & v38 (left front of luggage compt) J/c v39 (left front of luggage compt) K1 (behind left kick panel) K4 (behind right kick panel) K83 K84 K85 K86 K87 K88 L15 Lcn+ Lcn- Left center j/b (behind left side of dash) Left cowl side j/b (behind left end of dash) Nca Pnk Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) U2 (in right "c" pillar) V37 V38 W/ active stabilizer suspension High/Low Bus Wiring Diagram (4 of 4) for Lexus GS 450h 2008 List of elements for High/Low Bus Wiring Diagram (4 of 4) for Lexus GS 450h 2008: 50 (behind right end of dash) clearance warning ecu (left side of driver's seat) left front seat position control ecu & switch A/c amplifier (behind right side of dash) A11 A13 A29 A30 Air bag sensor assembly center (under center floor console) Body ecu C21 C31 Certification ecu (right side of luggage compt) D14 D15 Front-lighting system Headlamp swivel ecu (behind left kick panel) Ig1d J/c v26 & v27 (left front of luggage compt) K44 K52 Left cowl side j/b (behind left end of dash) Left front door ecu (in driver's door) Left rear door ecu (in left rear door) Left rear power window switch Luggage room j/b Luggage room j/b (left side of luggage compt) Mpx Mpx+ Mpx- Mpx1 Mpx2 Mpx3 Mpx4 Outer mirror switch assembly Overhead j/b (in overhead console) Pnk Power source control ecu (behind right end of dash) Power window master switch Rain sensor (front center of roof) Red Right front door ecu (in right front door) Right front power window switch Right rear door ecu (in right rear door) Right rear power window switch Sliding roof control ecu (front of overhead console) Tire pressure warning ecu (behind center of dash) V26 V27 W/ adaptive W/o adaptive
COOLING FAN Cooling Fan Wiring Diagram for Lexus GS 450h 2008 List of elements for Cooling Fan Wiring Diagram for Lexus GS 450h 2008: 35 +b1 A/c amplifier (behind right side of dash) A/c pressure sensor (left front of engine compt) A4 (right rear of engine compt) A53 B1 (right front of engine compt) Can+ Can- Canh Canl Computer data lines system Cooling fan ecu (left front of engine compt) E83 Engine control module (left side of engine compt) Engine coolant temperature sensor (top right side of engine) Engine room j/b 1 (left side of engine compt) Engine room r/b 1 (left side of engine compt) Fan main relay Hot at all times Hot in on or start J/c a10 (left side of engine compt) K52 Left cowl side j/b (behind left end of dash) Lh-ig fuse 10a Main fan motor Mpx+ Mpx- Pre Rad fan fuse 60a Red Rfc S5-2 Sg-2 Sub fan motor Thw
CRUISE CONTROL Cruise Control Wiring Diagram, with Dynamic Radar Controls (1 of 3) for Lexus GS 450h 2008 List of elements for Cruise Control Wiring Diagram, with Dynamic Radar Controls (1 of 3) for Lexus GS 450h 2008: 67 (left side of engine compt) j/c a11 & a10 +b1 +bm A10 A11 A13 A2 (left rear corner of engine compt) A53 Batt Can+ Can- Canh Canl Computer data lines system D23 E1 (left rear of engine) E10 E2 (right rear of engine) E83 Efi fuse 25a Efi main relay Engine control module (left side of engine compt) Engine controls system Engine room j/b 1 (left side of engine compt) Engine room r/b 1 (left side of engine compt) Eo1 Eo2 Eo3 Eo4 Eo5 Etcs fuse 10a Fl+ Fl- Fr+ Fr- Geo1 Go1 Hot at all times Hot in on or start Ign fuse 10a Igsw J/c a10 (left side of engine compt) J/c a9 (left side of engine compt) J/c e10 & a8 (left side of engine compt) Left front speed sensor (at left front wheel assembly) Left rear speed sensor (at left rear wheel assembly) Meo1 Mrel Neo1 Pnk Red Right cowl side j/b (behind right end of dash) Right front speed sensor (at right front wheel assembly) Right rear speed sensor (at right rear wheel assembly) Rl+ Rl- Rr+ Rr- Skid control ecu (left rear of engine compt) Spi Stop sw fuse 7.5a Stp Throttle body assembly (top rear of engine) Vc2 Vta Vta1 Vta2 Cruise Control Wiring Diagram, with Dynamic Radar Controls (2 of 3) for Lexus GS 450h 2008 List of elements for Cruise Control Wiring Diagram, with Dynamic Radar Controls (2 of 3) for Lexus GS 450h 2008: 62 (behind left end of dash) left cowl side j/b (behind right end of dash) gateway ecu (behind right side of dash) right center j/b (center front of engine compt) millimeter wave radar sensor (left side of luggage compt) luggage room j/b (on brake pedal bracket) +res -set C21 C32 Ca1h Cail Canc Cancel Canh Canl Ccs Computer data lines Computer data lines system Cruise control switch D24 D29 Dist Distance control ecu (behind left end of dash) E1 (left rear of engine) E10 Ecc Ecu-ig lh fuse 10a F13 G13 Gnd Hot in on or start Igb J/c a8 & e10 (left side of engine compt) J13 J23 L11 L12 L13 L14 Left center j/b (behind right side of dash) Left cowl side j/b (behind left end of dash) Lgnd Lks Lksw Lrdd Lrrd Luggage room j/b ecu M11 Mode Mpl1 Mpx1 On-off Pnk R/n Red Right center j/b (behind right side of dash) Sgnd Spiral cable (in steering column) Stop lamp switch Stp1 System Cruise Control Wiring Diagram, with Dynamic Radar Controls (3 of 3) for Lexus GS 450h 2008 List of elements for Cruise Control Wiring Diagram, with Dynamic Radar Controls (3 of 3) for Lexus GS 450h 2008: 81 (left side of engine compt) j/c a50 (right rear of engine) thermistor (oil pump) +b1 +b2 +bs A10 A24 A25 A32 A33 A54 Accelerator position sensor (under left side of dash) Batt C15 Can+ Can- Canh Canl Cchg Ccs Combination meter Computer data lines system Cruise ind D11 Dome fuse 7.5a E1 (left rear of engine) E10 E13 E84 Electronically controlled transmission solenoid (in transmission) Engine room j/b 1 (left side of engine compt) Engine room r/b 1 (left side of engine compt) Ep1 Ep2 Gauge fuse 7.5a Hot at all times Hot in on or start Hybrid snow ind Hybrid vehicle control ecu (left side of engine compt) Igct 1 fuse 20a Igct relay Igsw J/c a32 & a33 (behind left end of dash) J/c a50 (left side of engine compt) J/c a8 & e10 (left side of engine compt) J/c a9 (left side of engine compt) J15 K2 (under left side of floor console) K4 (behind right kick panel) Lgnd Master ind Mpx-b fuse 7.5a Mrel Multi- information display Nei Park/neutral position switch (on transmission) Pb1 Pb2 Pb3 Pmet Pnk Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Sl1+ Sl1- Sl2+ Sl2- Sp red Spd1 Speedo- meter St1- Stp Tho Topm Vap2 Vcp1 Vcp2 Vpa Vpa1 Vpa2 Cruise Control Wiring Diagram, without Dynamic Radar Controls (1 of 2) for Lexus GS 450h 2008 List of elements for Cruise Control Wiring Diagram, without Dynamic Radar Controls (1 of 2) for Lexus GS 450h 2008: 79 (left rear corner of engine compt) a2 (on brake pedal bracket) +b1 +bm +res -set A10 A11 A13 A53 Batt Can+ Can- Cancel Canh Canl Ccs Computer data lines system Cruise control switch E1 (left rear of engine) E10 E2 (right rear of engine) E83 Ecc Efi fuse 25a Efi main relay Engine control module (left side of engine compt) Engine controls system Engine room j/b 1 (left side of engine compt) Engine room r/b 1 (left side of engine compt) Eo1 Eo2 Eo3 Eo4 Eo5 Etcs fuse 10a Fl+ Fl- Fr+ Fr- G13 Geo1 Go1 Hot at all times Hot in on or start Ign fuse 10a Igsw J/c a10 (left side of engine compt) J/c a11 & a10 (left side of engine compt) J/c a8 & e10 (left side of engine compt) J/c a9 (left side of engine compt) J/c e10 & a8 (left side of engine compt) J13 Left center j/b (behind right side of dash) Left front speed sensor (at left front wheel assembly) Left rear speed sensor (at left rear wheel assembly) Meo1 Mrel Neo1 On-off Pnk Red Right cowl side j/b (behind right end of dash) Right front speed sensor (at right front wheel assembly) Right rear speed sensor (at right rear wheel assembly) Rl+ Rl- Rr+ Rr- Skid control ecu (left rear of engine compt) Spi Spiral cable (in steering column) Stop lamp switch Stop sw fuse 7.5a Throttle body assembly (top rear of engine) Vc2 Vta Vta1 Vta2 Cruise Control Wiring Diagram, without Dynamic Radar Controls (2 of 2) for Lexus GS 450h 2008 List of elements for Cruise Control Wiring Diagram, without Dynamic Radar Controls (2 of 2) for Lexus GS 450h 2008: 79 (left rear of engine) e1 (left side of engine compt) j/c a50 (right rear of engine) thermistor (oil pump) +b1 +b2 +bs A10 A24 A25 A32 A33 A54 Accelerator position sensor (under left side of dash) Batt C15 Can+ Can- Canh Canl Ccs Combination meter Computer data lines system Cruise ind D11 Dome fuse 7.5a E1 (left rear of engine) E10 E13 E84 Electronically controlled transmission solenoid (in transmission) Engine room j/b 1 (left side of engine compt) Engine room r/b 1 (left side of engine compt) Ep1 Ep2 Gauge fuse 7.5a Hot at all times Hot in on or start Hybrid vehicle control ecu (left side of engine compt) Igct 1 fuse 20a Igct relay Igsw J/c a32 & a33 (behind left end of dash) J/c a50 (left side of engine compt) J/c a8 & e10 (left side of engine compt) J/c a9 (left side of engine compt) J15 K2 (under left side of floor console) K4 (behind right kick panel) Master ind Mpx-b fuse 7.5a Mrel Multi- information display Nei Park/neutral position switch (on transmission) Pb1 Pb2 Pb3 Pmet Pnk Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Sl1+ Sl1- Sl2+ Sl2- Sp red Spd1 Speedo- meter St1- Stp Tho Topm Vap2 Vcp1 Vcp2 Vpa Vpa1 Vpa2
DEFOGGERS Front Deicer Wiring Diagram for Lexus GS 450h 2008 List of elements for Front Deicer Wiring Diagram for Lexus GS 450h 2008: 19 A/c amplifier (behind right side of dash) A10 A11 Computer data lines system Deicer fuse 25a Deicer relay Engine room r/b 1 (left side of engine compt) Fdef Front window deicer Hot at all times Hot in on or start J/c a10 & a11 (left side of engine compt) J/c a17 (left rear corner of engine compt) K52 Left cowl side j/b (behind left end of dash) Lh-ig fuse 10a Mpx+ Mpx- Red Heated Mirrors Wiring Diagram for Lexus GS 450h 2008 List of elements for Heated Mirrors Wiring Diagram for Lexus GS 450h 2008: 55 A32 A33 Bdr Caih Cail Computer data lines system Cpub D11 D12 Engine room r/b 1 (left side of engine compt) Gateway ecu (behind right end of dash) Gnd Gtx+ Gtx- Hot at all times Ig1d J/c a32 & a33 (behind left end of dash) J18 J20 K1 (behind left kick panel) K2 (under left side of floor console) K53 K56 Left cowl side j/b (behind left end of dash) Left front door ecu (in driver's door) Left outer rear view mirror (front of left front door) Left rear door ecu (in left rear door) Lh fr door fuse 20a Lh-ig fuse 10a Lh-ig relay 1 Mirror heater Mpi1 Mpi2 Mpx-b fuse 7.5a Mpx1 Mpx2 Multi-display Pnk Power source control ecu (behind right end of dash) Radio receiver assembly Rear window defogger switch Rh fr door fuse 20a Rh-ig fuse 7.5a Rh-ig relay Right cowl side j/b (behind right end of dash) Right front door ecu (in right front door) Right outer rear view mirror (front of right front door) Right rear door ecu (in right rear door) Sig Tx+ Tx- Txm+ Txm- U1 (under front passenger's seat) V1 (under driver's seat) Rear Defogger Wiring Diagram for Lexus GS 450h 2008 List of elements for Rear Defogger Wiring Diagram for Lexus GS 450h 2008: 47 A10 j/c a10 & a11 (left side of engine compt) A11 A4 (right rear of engine compt) A53 Caih Cail Canh Canl Computer data lines system D11 D12 Defog fuse 50a Defog relay Engine control module (left side of engine compt) Engine room j/b 1 (left side of engine compt) Engine room r/b 1 (left side of engine compt) Gateway ecu (behind right end of dash) Gtx+ Gtx- Hot at all times Hot in on or start Ig1d K1 (behind left kick panel) K53 K56 Left cowl side j/b (behind left end of dash) Lh-ig fuse 10a Lh-ig relay 1 Mpi1 Mpi2 Multi-display Noise filter Noise filter defogger Pnk Power source control ecu (behind right end of dash) Radio receiver assembly Rdef Rear window defogger Rear window defogger switch Right cowl side j/b (behind right end of dash) Tx+ Tx- Txm+ Txm- U20 U4 (in right "c" pillar) V20
ELECTRONIC POWER STEERING Electronic Power Steering Wiring Diagram for Lexus GS 450h 2008 List of elements for Electronic Power Steering Wiring Diagram for Lexus GS 450h 2008: 67 A14 A15 A23 A25 A3 (right rear corner of engine compt) A32 A33 A54 C1 (right front of engine compt) C15 C2 (right rear of engine compt) Ca1h Ca1l Can+ Can- Canh Canl Combination meter Computer data lines system D11 Data link connector 3 (under left side of dash) Ecu-b fuse 10a Engine room j/b 1 & engine room r/b 1 (left side of engine compt) Eps fuse 80a Eps relay Gateway ecu (behind right end of dash) Gauge fuse 7.5a Hot at all times Hot in on or start Hybrid vehicle control ecu (left side of engine compt) Ig+ Incs Insn J/c a32 & a33 (behind left end of dash) J15 K31 K4 (behind right kick panel) Left cowl side j/b (behind left end of dash) Lh ecu-ig fuse 10a Mpi1 Mpi2 Mpx+ Mpx- Nca Oucs Ousn P/s ind Pgnd Pig Power steering ecu (right rear corner of engine compt) Power steering motor (front of engine compt) Power steering torque sensor (left front of engine compt) Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Rly Rzcs Rzg Rzsn Rzv Sil Skid control ecu (left rear of engine compt) Srzg Steering sensor (behind left side of dash, near steering column) Tqg1 Tqg2 Trqv Power Tilt Steering Column Wiring Diagram for Lexus GS 450h 2008 List of elements for Power Tilt Steering Column Wiring Diagram for Lexus GS 450h 2008: 50 (behind left end of dash) j/c a32 & a33 (behind left kick panel) (behind right kick panel) k4 A15 A18 A32 A33 Computer data lines system D14 D18 Down Ecub Engine room r/b 1 (left side of engine compt) G11 Gnd Headlamp dimmer switch assembly Hot at all times Hot in on or start J14 K2 (under left side of floor console) K22 Left center j/b (behind right side of dash) Left cowl side j/b (behind left end of dash) Long Mpx-b fuse 7.5a Mpx1 Mpx2 Pnk Red Rh ecu-ig fuse 10a Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Short Telescopic motor Telescopic sensor Tem+ Tem- Tes Ti & te fuse 20a Tilt & telescopic ecu (top right side of steering column) Tilt & telescopic switch Tilt motor Tilt motor (under left side of dash) Tilt sensor Tim+ Tim- Tis Vce Vci Windshield wiper switch assembly Progressive Power Steering Wiring Diagram for Lexus GS 450h 2008 List of elements for Progressive Power Steering Wiring Diagram for Lexus GS 450h 2008: 74 (behind left end of dash) left cowl side j/b (behind left kick panel) (behind right kick panel) k4 (right rear of engine compt) a4 +bi +bo A15 A29 A32 A33 A40 Afs+ Afs- Bat Bmu Bmu+ Bmv Bmv+ Bmw Bmw+ Ca1h Ca1l Can+ Can- Canh Canl Combination meter Computer data lines system D29 Data link connector 3 (under left side of dash) Ecu-b fuse 10a Ecu-ig lh fuse 10a Engine room j/b 1 & engine room r/b 1 (left side of engine compt) Ess G11 Gateway ecu (behind right end of dash) Headlamp swivel ecu Hot at all times Hot in on or start J/c a32 & a33 (behind left end of dash) J15 K2 (under left side of floor console) K31 K69 K70 Left center j/b (behind right side of dash) Left cowl side j/b (behind left end of dash) Lg+ Lv+ Mpi1 Mpi2 Mpx+ Mpx- Nca Pgd2 Pgnd Pig Red Rg+ Right center j/b (behind right side of dash) Rv+ S1+ S2+ Sg2+ Sil Skid control ecu (left rear of engine compt) Ss+ Ss- Ss1+ Ss1- Steering actuator (behind left side of dash, near steering column) Steering control ecu (under glove box) Steering sensor (behind left side of dash, near steering column) Vgrs fuse 40a
ELECTRONIC SUSPENSION Active Stablizer Suspension Wiring Diagram for Lexus GS 450h 2008 List of elements for Active Stablizer Suspension Wiring Diagram for Lexus GS 450h 2008: 58 (left front of (right front of luggage compt) active stabilizer converter (right side of luggage compt) y1 A5 (under right headlight assembly) A58 Bsc Bsg Bst Bsv Bt+ Bt- Canh Canl Computer data lines system D14 Ddgn Ddir Ddli Ddon Ddpb Ecu-ig rh fuse 10a Engine room r/b 1 (left side of engine compt) Front stabilizer control actuator assembly (right front of engine compt) Front stabilizer control ecu (right front corner of engine compt) Hot at all times Hot in on or start Igct Ilin J/c v26 & v27 Lcn+ Lcn- Luggage compt) Luggage room r/b 6 (center rear of luggage compt) Mrh Mrl Nca Pgnd Pig Rear stabilizer control actuator assembly (right side of luggage compt) Rear stabilizer control ecu (right side of luggage compt) Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Shg Sil Stb dc/dc fuse 30a Stb fr fuse 50a Stb fr relay Stb rr fuse 30a Stb rr relay Stb-am fuse 30a V26 V27 Ww z19 Y1 (right side of luggage compt) Y2 (right rear of luggage compt) Z18 Z21 Electronic Air Suspension Wiring Diagram for Lexus GS 450h 2008 List of elements for Electronic Air Suspension Wiring Diagram for Lexus GS 450h 2008: 79 (at right front shock tower) right front absorber control actuator (behind left end of dash) j/c a32 & a33 (behind right end of dash) (behind right end of dash) right cowl side j/b (behind right side of dash) right center j/b (in right "c" pillar) (left front of luggage compt) j/c v26 (left rear corner of engine compt) a2 (left side of engine compt) j/c a11 (right front of luggage compt) j/c u25 (under left side of floor console) k2 A10 A16 A24 A32 A33 A37 Absorber control ecu (behind right end of dash) Absorber control switch Absorber sport ind Air sus fuse 20a Canh Canl Combination meter Computer data lines system D25 E13 Engine room r/b 1 (left side of engine compt) Fal+ Fal- Far+ Far- Fbl+ Fbl- Fbr+ Fbr- Front acceleration sensor (behind left side of dash) G15 Gauge fuse 7.5a Gnd Hot at all times Hot in on or start Ig+ J15 K31 K4 (behind right kick panel) K72 Left front absorber control actuator (at left front shock tower) Left rear absorber control actuator (at left rear shock tower) Mpx+ Mpx- Mpx-b fuse 7.5a Pnk Ral+ Ral- Rar+ Rar- Rbl+ Rbl- Rbr+ Rbr- Rear acceleration sensor Red Right cowl side j/b Right cowl side j/b (behind right end of dash) Right rear absorber control actuator (at right rear shock tower) Sbl3 Sbr3 Sgb Sgfl Sgg Sgl3 Sgnd Sgr3 Sgrr Sgv Sil Sw1 V2 (left side of luggage compt)
ENGINE PERFORMANCE
3.5L 3.5L, Engine Controls Wiring Diagram (1 of 8) for Lexus GS 450h 2008 List of elements for 3.5L, Engine Controls Wiring Diagram (1 of 8) for Lexus GS 450h 2008: 58 (right rear of engine) (right side of engine) +bm A1a+ A1a- A2a+ A2a- E83 Engine control module (left side of engine compt) Engine oil pressure switch (lower left front of engine) Engine room r/b 1 (left side of engine compt) Eo5 Etcs fuse 10a Fpd Fpf1 Geo1 Hot at all times Hot in on or start Ht1b Ht2b Ig2 fuse 10a Igf1 Igf2 Igt1 Igt2 Igt3 Igt4 Igt5 Igt6 Ijf2 Ijf3 Injf Left exhaust side camshaft timing oil control valve (left side of engine) Left intake side camshaft timing oil control valve (top left side of engine) Meo1 Mol Mops Ne+ Ne- Oc1+ Oc1- Oc2+ Oc2- Oe1+ Oe1- Oe2+ Oe2- Pnk Red Right exhaust side camshaft timing oil control valve Right intake side camshaft timing oil control valve Tha Throttle body assembly (top rear of engine) Vta Vta1 Vta2 Vv1+ Vv1- 3.5L, Engine Controls Wiring Diagram (2 of 8) for Lexus GS 450h 2008 List of elements for 3.5L, Engine Controls Wiring Diagram (2 of 8) for Lexus GS 450h 2008: 35 (left rear of engine) (right rear of engine) e2 (top left side of engine) (top right side of engine) (top right side of engine) (ignition right) noise filter E2g Ex+ Ex- Fuel injectors 1, 3 & 5 (port injector) (top right side of engine) Fuel injectors 2, 4 & 6 (port injector) (top left side of engine) Gnd Igf1 Igf2 Ignition coil 1 Ignition coil 2 Ignition coil 3 Ignition coil 4 Ignition coil 5 Ignition coil 6 Igt1 Igt2 Igt3 Igt4 Igt5 Igt6 J/c a8 & e10 (left side of engine a8 compt) J/c e9 (left side of engine compt) Mass air flow meter (right side of engine compt, in air intake duct) Red Right exhaust side vvt sensor (right rear side of engine) Right intake side vvt sensor (right front side of engine) Tha Vc2 Vvr+ Vvr- 3.5L, Engine Controls Wiring Diagram (3 of 8) for Lexus GS 450h 2008 List of elements for 3.5L, Engine Controls Wiring Diagram (3 of 8) for Lexus GS 450h 2008: 25 (left rear of engine) (left rear of engine) air fuel ratio sensor (bank 2 sensor 1) (left rear of engine) e1 (left side of engine compt) j/c a8 & e10 (on exhaust system, near catalytic converter) heated oxygen sensor (bank 2 sensor 2) (on right side of engine, in exhaust manifold) heated oxygen sensor (bank 1 sensor 2) (right rear of engine) air fuel ratio sensor (bank 1 sensor 1) (top left rear of engine) (ignition left) noise filter A1a+ A1a- A2a+ A2a- E10 Engine oil level sensor (right rear of engine) Ha1a Ha2a Ht1b Ht2b Knock control sensor (bank 2) (on left side of engine) Nca Ox1b Ox2b Pnk Red Right cowl side j/b (behind right end of dash) 3.5L, Engine Controls Wiring Diagram (4 of 8) for Lexus GS 450h 2008 List of elements for 3.5L, Engine Controls Wiring Diagram (4 of 8) for Lexus GS 450h 2008: 41 (left side of engine compt) j/c a10 & a11 A/f fuse 15a A/f relay A10 A11 A2 (left rear corner of engine compt) C/opn relay Crankshaft position sensor (left front of engine) E2 (right rear of engine) E2g E83 Efi 2 relay Efi fuse 25a Efi main relay Ekn2 Eknk Engine control module (left side of engine compt) Engine room j/b 1 (left side of engine compt) Eo1 Eo2 Eo3 Ev1+ Ev1- Ev2+ Ev2- F/pmp fuse 25a Ha1a Ha2a Hot at all times Inj fuse 20a Inj relay Knk1 Knk2 Pnk Prg Red Thw Vc2 Vsv (purge) (top right rear of engine) Vv2+ Vv2- 3.5L, Engine Controls Wiring Diagram (5 of 8) for Lexus GS 450h 2008 List of elements for 3.5L, Engine Controls Wiring Diagram (5 of 8) for Lexus GS 450h 2008: 43 (in fuel tank) fuel suction pump & gauge assembly (right front of engine compt) driver injector (edu) (right side of engine compt) fuel pump resistor +b2 E1 (left rear of engine) E53 E54 Efi 2 fuse 10a Engine room r/b 1 (left side of engine compt) Ex+ Ex- F/pmp relay Fp+ Fp- Fpd Fpf1 Ij1+ Ij1- Ij2+ Ij2- Ij3+ Ij3- Ij4+ Ij4- Ij5+ Ij5- Ij6+ Ij6- Ijf2 Ijf3 Injf J/c e10 (left side of engine compt) Knock control sensor (bank 1) (on right side of engine) Left exhaust side vvt sensor (left rear side of engine) Left intake side vvt sensor (left front side of engine) Nca Pnk Red Spill control valve (right rear of engine) V2 (left side of luggage compt) Vc2 Vvl+ Vvl- 3.5L, Engine Controls Wiring Diagram (6 of 8) for Lexus GS 450h 2008 List of elements for 3.5L, Engine Controls Wiring Diagram (6 of 8) for Lexus GS 450h 2008: 32 (behind left side of dash) left center j/b (left side of engine compt) j/c a9 (right front of engine) i1 (right front of engine) j1 (top left side of engine) fuel injectors 2, 4 & 6 (direct injector) (top right side of engine) fuel injectors 1, 3 & 5 (direct injector) Canister pressure sensor Canister pump module (under center rear of vehicle) E1 (left rear of engine) E10 Engine coolant temperature sensor (top right side of engine) Fuel pressure sensor (rear of engine) G13 H13 J/c a8 & e10 (left side of engine compt) Leak detection pump Mgnd Mtrb Nca Pnk Ptnk Red Sgnd V17 Vapor pressure sensor Vcc Vent valve Vgnd Vlvb Vout W/ active stabilizer suspension system W/o active stabilizer suspension system 3.5L, Engine Controls Wiring Diagram (7 of 8) for Lexus GS 450h 2008 List of elements for 3.5L, Engine Controls Wiring Diagram (7 of 8) for Lexus GS 450h 2008: 46 (behind left end of dash) j/c a32 & a33 (left side of engine compt) j/c a10 A10 A24 A25 A32 A33 A54 Combination meter Computer data lines system Dome fuse 7.5a E13 E2b Efi Engine room r/b 1 (left side of engine compt) Ep1 Ep2 Fuci Fuwi Gauge fuse 7.5a Hot at all times Hot in on or start Hybrid vehicle control ecu (left side of engine compt) Ig+ Ign fuse 10a J15 K2 (under left side of floor console) Lcd Master ind Mil ind Mpx+ Mpx- Mpx-b fuse 7.5a Multi-information display Nei Pnk Power meter Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Speedo meter Thb Vcp1 Vcp2 Vpa Vpa2 3.5L, Engine Controls Wiring Diagram (8 of 8) for Lexus GS 450h 2008 List of elements for 3.5L, Engine Controls Wiring Diagram (8 of 8) for Lexus GS 450h 2008: 75 (left front of luggage compt) j/c v26 & v27 (left rear corner of engine compt) a2 (left side of engine compt) j/c a11 & a10 (rear of engine) refueling valve +b1 A10 A11 A53 Accelerator position sensor (under left side of dash) Air conditioning system Ambient temperature sensor (behind left side of front fascia) Batt Battery thermometer sensor (left front of luggage compt) Body ecu Can+ Can- Canh Canl Ccv Ccv2 Computer data lines system Cooling fans system Drns Dsvr E1 (left rear of engine) E10 Engine control module (left side of engine compt) Engine room r/b 1 (left side of engine compt) Ep1 Ep2 Fpr Fr10 Fri Fuel Fuel lid courtesy switch Fuel vapor- containment valve (under left rear of vehicle) Go1 Go2 Hot at all times I1b- Igsw Inverter Irel J/c a50 (left side of engine compt) J/c a8 & e10 (left side of engine compt) J/c a8 & e10 (left side of engine compt) e10 Left cowl side j/b (behind left end of dash) Lido Lst1 Lst2 Mpmp Mrel Neo1 O2b- Ox1b Ox2b Pnk Ppmp Ptnk Rdef Red Relief vlv fuse 10a Relief vlv relay Rfc Rfrl Tach Tam V2 (left side of luggage compt) V26 V27 Vap2 Vcp1 Vpa1 Vpa2 Vpmp 3.5L, Hybrid System Wiring Diagram (1 of 5) for Lexus GS 450h 2008 List of elements for 3.5L, Hybrid System Wiring Diagram (1 of 5) for Lexus GS 450h 2008: 61 (left side of engine compt) j/c a50 +b2 +bwp A53 A54 Anti-theft system Batt Battery blower motor (center front of luggage compt, at top of hybrid battery) Can+ Can- Canh Canl Cchg Ccs Computer data lines system Cruise control system E1 (left rear of engine) E10 Engine control module (left side of engine compt) Engine room j/b 1 (left side of engine compt) Gnd Go1 Go2 Hot at all times Hybrid vehicle control ecu (left side of engine compt) Igct fuse 20a Igct relay Ilki Imi Imo Inv w/p fuse 10a Inv w/p relay J/c a8 & e10 (left side of engine compt) J/c v27 (left front of luggage compt) Lgnd Mrel Nei Neo1 Nodd Ohg Ohu Ohv Ohw Oigh Oil pmp fuse 80a Oil pump motor controller (right front corner of engine compt) Opm1 Opm2 Opst Red Sensor Sftd Sftu Sio Smrb Spdi St2 Starting/charging system Swp V2 (left side of luggage compt) Water pump motor (inverter) (left front of engine compt) 3.5L, Hybrid System Wiring Diagram (2 of 5) for Lexus GS 450h 2008 List of elements for 3.5L, Hybrid System Wiring Diagram (2 of 5) for Lexus GS 450h 2008: 39 A10 A11 A4 (right rear of engine compt) Accelerator position sensor (under left side of dash) Batt fan fuse 20a Batt fan relay D13 Dc/dc fuse 140a E1 (left rear of engine) E10 E13 Engine room r/b 1 (left side of engine compt) Ep1 Ep2 G13 Hot at all times Hot in on or start Igct 2 fuse 7.5a Igct 3 fuse 7.5a Ign fuse 10a J/c a10 & a11 (left side of engine compt) J/c a10 (left side of engine compt) J/c a50 (left side of engine compt) J/c a8 & e10 (left side of engine compt) J/c a9 (left side of engine compt) Left center j/b (behind left side of dash) Nca Oil pmp relay Red Rh-ig fuse 7.5a Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Stop lamp switch (on brake pedal bracket) Stop sw fuse 7.5a Transmission control switch Vap2 Vcp1 Vpa1 Vpa2 3.5L, Hybrid System Wiring Diagram (3 of 5) for Lexus GS 450h 2008 List of elements for 3.5L, Hybrid System Wiring Diagram (3 of 5) for Lexus GS 450h 2008: 75 (left front of engine) compressor motor (left rear corner of engine compt) a2 (rear of engine compt) front motor generator 1 (right rear corner of engine compt) inverter +br1 +br2 A54 A60 Abfs Acpb Acpe Air conditioning system Battery thermometer sensor (left front of luggage compt) Bth+ Bth- Cbi Cei Clk+ Clk- Computer data lines system Drn1 Drn9 Drnb Drnc Drnd Drne E2b Ep1 Ep2 Gcs Gcsg Gmt Gmtg Gnd1 Gnd2 Grf Grfg Gsn Gsng Hsdn Htm+ Htm- Hybrid vehicle control ecu (left side of engine compt) Igsw Ilk Ilki Inverter Iwp Mcs Mcsg Modd Mrf Mrfg Msn Msng Mth+ Mth- Nca Pmet Pnk Rdy Red Req+ Req- Smrg Smrp Starting/ charging system Sti- Stp Thb Vcp1 Vcp2 Vlo Vpa Vpa2 3.5L, Hybrid System Wiring Diagram (4 of 5) for Lexus GS 450h 2008 List of elements for 3.5L, Hybrid System Wiring Diagram (4 of 5) for Lexus GS 450h 2008: 82 (rear of engine compt) front motor generator 2 A32 Amd Battery voltage sensor (center front of luggage compt) Bth+ Bth- Busber module 1 Busber module 2 Busber module 3 Cbd Ced Converter (hybrid vehicle) (center front of luggage compt) Current sensor Dome fuse 7.5a Engine room r/b 1 (left side of engine compt) Fuse 15a Gb0 Gb1 Gb2 Gb3 z13 Gbb0 Gc0 Gib Gnd Hot at all times Hybrid vehicle battery Hybrid vehicle battery (front of luggage compt) Idh Igct Ilk Inr Inter lock switch (center front of luggage compt) J/c a32 & a33 (behind left end a33 of dash) J/c n8 (center front of luggage compt) J/c v26 & v27 (left front of luggage compt) Mcs Mcsg Mmt Mmtg Mpx-b fuse 7.5a Mrf Mrfg Msn Msng Nca Nodd Pnk Red Right center j/b (behind right side of dash) Service plug Smrp System main relay (front of luggage compt) Tb0 Tb1 Tb2 Tb3 Tc0 V2 (left side of luggage compt) V26 V27 Vb1 z9 Vb10 Vb11 Vb12 Vb13 Vb14 Vb15 Vb16 Vb17 Vb18 Vb19 Vb2 Vb20 Vb3 Vb4 Vb5 Vb6 Vb7 Vb8 Vb9 Vib Vlo 3.5L, Hybrid System Wiring Diagram (5 of 5) for Lexus GS 450h 2008 List of elements for 3.5L, Hybrid System Wiring Diagram (5 of 5) for Lexus GS 450h 2008: 59 (in transmission) electronically controlled transmission solenoid (left rear of engine compt) skid control ecu (left rear of engine) e1 (on transmission) park/neutral position switch (right rear of engine) thermistor (oil pump) +bs A13 A24 A25 Air conditioning system C15 Clk Combination meter Computer data lines system D11 E01 E02 E12 E84 Eti Fctl Gauge fuse 7.5a Gmt Gmtg Hot in on or start Hybrid vehicle control ecu (left side of engine compt) Ind master Ind ready Ite J/c e9 (left side of engine compt) J15 K31 K4 (behind right kick panel) Lcd Mmt Mmtg Multi- information display Pb1 Pb2 Pb3 Pnk Power meter Pwr ind hydrid Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Sl1+ Sl1- Sl2+ Sl2- Snow ind hydrid Sp1 Sp2+ Sp2- Speedomter Stb Tho Topm Transmission revolution sensor (turbine) (in transmission)
EXTERIOR LIGHTS Back-up Lamps Wiring Diagram for Lexus GS 450h 2008 List of elements for Back-up Lamps Wiring Diagram for Lexus GS 450h 2008: 41 +bs A32 A33 A54 Backup light Bck1 C15 C21 C31 Canh Canl Computer data lines system E84 Ecub Engine room r/b 1 (left side of engine compt) Hot at all times Hot in on or start Hybrid vehicle control ecu (left side of engine compt) J/c a32 & a33 (behind left end of dash) J/c v27 & v26 (left front of luggage compt) J/c y6 (center rear of luggage compt lid) J27 Left cowl side j/b (behind left end of dash) Left rear combination lamp Luggage room j/b (left side of luggage compt) Luggage room j/b ecu Mpx-b fuse 7.5a Mpx1 Mpx2 Park/neutral position switch (on transmission) Pgnd Red Right rear combination lamp Rr+b Rr-b fuse 10a Rr-ig1 fuse 10a V2 (left side of luggage compt) V26 V27 V30 Wiring harness spool v30 & y1 (under center of rear parcel shelf) Exterior Lamps Wiring Diagram (1 of 3) for Lexus GS 450h 2008 List of elements for Exterior Lamps Wiring Diagram (1 of 3) for Lexus GS 450h 2008: 60 (front of left front door) left outer rear view mirror +bl +br A10 A22 Backup Backup lamp circuit C10 C15 C16 C17 C32 Center stop lamp D24 E x3 Ecub Hot at all times Hot in on or start J/c v26 & v27 (left front of luggage compt) J/c v27 (left front of luggage compt) J/c v30 & y1 J/c y6 (center rear of luggage compt lid) J23 Lce1 Left cowl side j/b (behind left end of dash) Left front door ecu (in driver's door) Left rear combination lamp Left stop lp fuse 10a License plate lamp Luggage room j/b (left side of luggage compt) Luggage room j/b ecu Marker Noise filter (center stop lamp) (near left "c" pillar) Off Pgnd Pnk Red Right rear combination lamp Right stop lp fuse 10a Rr tail fuse 10a Rr+b Rr-b fuse 10a Rr-ig1 fuse 10a Stop/tail Stp Stp1 Stp2 Stp3 Tail Til1 Til2 Tlin Trn Trn1 Turn Turn ind V2 (left side of luggage compt) V26 V27 V30 Exterior Lamps Wiring Diagram (2 of 3) for Lexus GS 450h 2008 List of elements for Exterior Lamps Wiring Diagram (2 of 3) for Lexus GS 450h 2008: 62 (behind left end of dash) left cowl side j/b A2 (left rear corner of engine compt) A24 A26 A29 A32 A33 Acc Acc fuse 7.5a Auto Batb Becu Body ecu Computer data lines system D18 D23 Engine room j/b 1 (left side of engine compt) Fr tail fuse 10a Fr tail relay Front controller G11 Gnd2 Head Headlamp dimmer switch assembly Headlamp swivel ecu (behind left kick panel) Headlights system Hot at all times Hot in on or acc Hot in on or start Hrly J/c a11 (left side of engine compt) J/c a32 & a33 (behind left end of dash) J14 J27 K1 (behind left kick panel) K2 (under left side of floor console) K22 K67 K68 Left Left center j/b (behind left side of dash) Left cowl side j/b (behind left end of dash) Light control switch Mpx1 Mpx2 Off Pnk Red Right Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Right ecu-ig fuse 10a Right fr door fuse 20a Stop lamp switch (on brake pedal bracket) Stop sw fuse 7.5a Tail Turn switch W/ adaptive front-lighting W/o adaptive front-lighting Windshield wiper switch assembly Z10 Z11 Exterior Lamps Wiring Diagram (3 of 3) for Lexus GS 450h 2008 List of elements for Exterior Lamps Wiring Diagram (3 of 3) for Lexus GS 450h 2008: 55 (behind right side of dash) turn signal flasher (front of right front door) right outer rear view mirror (right front of engine compt) b1 (under left headlight assembly) b2 A10 A12 A13 A15 A16 A17 A18 A20 A26 A30 Body ecu Combination meter Computer data lines system E13 Engine room r/b 1 (left side of engine compt) Haz Hot at all times Hot in on or start J15 J17 J21 K1 (behind left kick panel) K2 (under left side of floor console) K31 K46 Left cowl side j/b (behind left end of dash) Left ecu-ig fuse 10a Left headlamp assembly Left turn ind Lh-ig fuse 10a Marker Master ind Mpx-b fuse 7.5a Mpx1 Mpx4 Multi- display Multi- information display Parking Pnk Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Right front door ecu (in right front door) Right headlamp assembly Right turn ind Tail/head ind Telltale lamp assembly Trn1 Turn Turn ind Turn-haz fuse 15a
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 7) for Lexus GS 450h 2008 List of elements for Ground Distribution Wiring Diagram (1 of 7) for Lexus GS 450h 2008: 52 (w/ active stabilizer suspension system) front stabilizer control ecu shield (w/ active stabilizer suspension system) power steering ecu shield (w/ adaptive front- lighting system) headlamp swivel ecu (w/o active stabilizer suspension system) steering control ecu shield (w/o adaptive front- lighting system) headlamp beam level control ecu A/f relay A1 (left rear of engine A10 A11 A13 A15 A2 (left rear corner of engine compt) A24 A29 A32 A33 A53 A60 A64 A65 Brake actuator Brake fluid level warning switch Brake pedal stroke sensor shield Clearance warning ecu Combination meter Compartment) Efi 2 relay Efi main relay Engine control module Engine control module shield Engine room j/b 1 (left side of engine compt) Engine room r/b 1 (left side of engine compt) Front controller Front window deicer Headlamp cleaner control relay Hybrid vehicle control ecu shield Ig2 relay Inverter J/c a10 & a11 (left side of engine compt) J/c a17 (left rear corner of engine compt) J/c a32 & a33 (behind left end of dash) J/c a63 (behind left end of dash) K31 Left cowl side j/b (behind left end of dash) Left front absorber control actuator Nca Skid control ecu Skid control ecu shield Water level warning switch Windshield washer motor Windshield wiper motor Wireless door lock buzzer Ground Distribution Wiring Diagram (2 of 7) for Lexus GS 450h 2008 List of elements for Ground Distribution Wiring Diagram (2 of 7) for Lexus GS 450h 2008: 50 A54 Accelerator position sensor shield Air fuel ratio sensor (bank 1 sensor 1) shield Air fuel ratio sensor (bank 2 sensor 1) shield Canister pump module Compressor motor Crankshaft position sensor shield Data link connector 3 Distance control ecu E1 (left rear of engine) E10 E13 E2 (right rear of engine) E83 E84 Engine control module Engine oil level sensor Engine room j/b 1 (left side of engine compt) Fuel tank pressure sensor G13 H13 Heated oxygen sensor (bank 1 sensor 2) shield Heated oxygen sensor (bank 2 sensor 2) shield Hybrid vehicle control ecu Igct relay Ignition coil 1 Ignition coil 2 Ignition coil 3 Ignition coil 4 Ignition coil 5 Ignition coil 6 Injector driver shield Inv w/p relay J/c a50 (left side of engine compt) J/c a8 & e10 (left side of engine compt) J13 K12 Knock control sensors shield L12 L14 Left center j/b (behind right side of dash) Millimeter wave radar sensor Nca Refueling valve Right center j/b (behind right side of dash) Spill control valve shield Spiral cable Transmission control switch Water pump motor (a/c) Water pump motor (inverter) Ground Distribution Wiring Diagram (3 of 7) for Lexus GS 450h 2008 List of elements for Ground Distribution Wiring Diagram (3 of 7) for Lexus GS 450h 2008: 70 (in overhead console) overhead j/b A10 A12 Absorber control ecu Absorber control ecu shield Absorber control switch Acc relay Airbag sensor assembly center Body ecu C13 Cigarette lighter Combination meter D11 D13 D15 Data link connector 3 Data link connector ecu shield Distance control ecu shield F12 F15 From left cowl side j/b (diagram 4 of 7) Front stabilizer control ecu shield G15 Gateway ecu Gateway ecu shield Glove box lamp H11 H12 H13 H15 Hybrid mode select switch I15 J/c k91 (behind right kick panel) J/c k92 (behind right kick panel) J/c k95 (behind right side of dash) Junction connector Junction connector v37 shield K13 K15 K2 (under left side of floor console) K31 K4 (behind right kick panel) K44 K69 K72 K74 Left vanity lamp switch Luggage compartment door opener cancel switch Nca Power source control ecu Power steering ecu shield Power switch Pwr outlet relay Rh-ig relay 1 Rh-ig relay 2 Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Right front absorber control actuator Right vanity lamp switch Seat heater switch Shift lock control ecu Steering control ecu Steering control ecu shield Steering lock ecu Tilt & telescope ecu Tilt motor Tire pressure warning ecu Tire pressure warning reset switch Tire pressure warning select switch Traction control switch Ground Distribution Wiring Diagram (4 of 7) for Lexus GS 450h 2008 List of elements for Ground Distribution Wiring Diagram (4 of 7) for Lexus GS 450h 2008: 56 A/c amplifier A13 A14 A15 Airbag sensor assembly center Body ecu C15 Cigarette lighter Clearance warning ecu shield Console box lamp E15 Engine control module shield F15 H14 H15 Hybrid control ecu shield Hybrid vehicle ecu shield I14 I15 Id code box J/c k93 (behind left kick panel) J/c k94 (behind left kick panel) J/c k96 (behind right side of dash) J14 J15 Junction connector v37 & e87 shield Junction connector v38 & k7 shield K1 (behind left kick panel) K15 K22 K44 K46 K52 L15 Left center j/b (behind right side of dash) Left cowl side j/b (behind left end of dash) Lh-ig relay 1 Lh-ig relay 2 Luggage door opening switch assembly Multi- display Nca Outer mirror switch assembly Overhead j/b Overhead j/b shield Skid control ecu shield Sliding roof control ecu Spiral cable Steering lock ecu Steering sensor Steering sensor shield Sun beam sensor shield To ground k2 (diagram 3 of 7) Turn signal flasher Windshield wiper switch assembly Yaw rate sensor Yaw rate sensor shield Ground Distribution Wiring Diagram (5 of 7) for Lexus GS 450h 2008 List of elements for Ground Distribution Wiring Diagram (5 of 7) for Lexus GS 450h 2008: 44 Battery blower motor Battery voltage sensor C10 C11 Center stop lamp Fuel lid courtesy switch Fuel suction pump & gauge assembly Hybrid vehicle control ecu shield Ig1 relay Inter lock switch J/c b5 (under left side of driver's seat) J/c b9 (under right side of driver's seat) J/c n8 (center front of luggage compt) J/c v26 & v27 (left front of luggage compt) J/c y6 (center rear of luggage compartment lid) Left front door ecu Left front lumbar support power seat switch Left front seat back climate control blower Left front seat cushion climate control blower Left front seat heater Left front seat inner belt Left front seat position control ecu & switch Left rear absorber control actuator Left rear combination lamp Left rear door ecu Left rear seat inner belt License plate lamp Luggage compartment door closer Luggage compartment door lock cylinder Luggage compartment door opener switch Luggage compartment door striker switch Luggage room j/b (left side of luggage compt) Luggage room j/b ecu Nca Rear sunshade relay Right rear combination lamp Seat belt control ecu System main relay V1 (under driver's seat) V2 (left side of luggage compt) V26 V27 V30 Wiring harness spool Ground Distribution Wiring Diagram (6 of 7) for Lexus GS 450h 2008 List of elements for Ground Distribution Wiring Diagram (6 of 7) for Lexus GS 450h 2008: 37 Certification ecu Door control receiver Engine control module shield J/c a5 (under right side of front passenger's seat) J/c a9 (under left side of front passenger's seat) J/c u25 (right front of luggage compt) J/c v39 (left front of luggage compt) Junction connector a59 shield Junction connector v37 & a59 shield Junction connector v37 & k87 shield Mayday ecu Nca Occupant classification ecu Overhead j/b shield Power outlet socket Rear stabilizer control ecu shield Rear window defogger Right front door ecu Right front lumbar support power seat switch Right front seat back climate control blower Right front seat cushion climate control blower Right front seat heater Right front seat inner belt Right front seat position control ecu & switch Right rear absorber control actuator Right rear door ecu Right rear seat inner belt Seat belt control ecu shield Steering control ecu shield U1 (under front passenger's seat) U2 (in right "c" pillar) U20 U28 U4 (in right "c" pillar) U45 W/ occupant classification system W/o occupant classification system Ground Distribution Wiring Diagram (7 of 7) for Lexus GS 450h 2008 List of elements for Ground Distribution Wiring Diagram (7 of 7) for Lexus GS 450h 2008: 51 (left side of engine compt) engine room r/b 1 A23 A3 (right rear corner of engine compt) A4 (right rear of engine compt) A40 A5 (under right headlight assembly) A58 B1 (right front of engine compt) B2 (under left headlight assembly) Blower motor C1 (right front of engine compt) C2 (right rear of engine compt) Converter (active stabilizer) Cooling fan ecu Defog relay Engine hood courtesy switch Except mark levinson Fan main relay Front stabilizer control ecu Front stabilizer control ecu shield Fuel injector 1 shield Fuel injector 2 shield Fuel injector 3 shield Fuel injector 4 shield Fuel injector 5 shield Fuel injector 6 shield I1 (right front of engine) J1 (right front of engine) K3 (under right side of floor console) K54 Left front fog lamp Left headlamp assembly Mark levinson Nca Noise filter Oil pmp relay Power steering ecu Power steering motor shield Radio receiver assembly Rear stabilizer control ecu Rear stabilizer control ecu shield Right front fog lamp Right headlamp assembly Smog ventilation sensor Steering control ecu Stereo component amplifier U3 (right side of luggage compt) U31 U42 Y1 (right side of luggage compt) Y2 (right rear of luggage compt)
HEADLIGHTS Adaptive Front Lighting Wiring Diagram (1 of 2) for Lexus GS 450h 2008 List of elements for Adaptive Front Lighting Wiring Diagram (1 of 2) for Lexus GS 450h 2008: 63 (left rear of engine compt) skid control ecu A1 (left rear of engine compt) A13 A15 A28 A29 A32 A33 Bl1+ Bl1- Bl2+ Bl2- Br1+ Br1- Br2+ Br2- Computer data lines system Flo Fro Front height control sensor (near left front shock tower) H-lp lvl fuse 7.5a Headlamp leveling motor Headlamp swivel ecu (behind left kick panel) Headlamp swivel motor Hot w/ lh-ig relay 1 energized J/c a32 & a33 (behind left end of dash) K10 Left cowl side j/b (behind left end of dash) Left headlight assembly Ll1+ Ll1- Ll2+ Ll2- Lr1+ Lr1- Lr2+ Lr2- Motor Mpx1 Mpx2 Pnk Rear height control sensor (under left rear of vehicle) Red Right headlight assembly Sbf Sbr Sensor Sgf Sgr Shb Shfl Shg Shrl Smbl Smbr Smgl Smgr Sml Smr Spdl Spdr Ss+ Ss- Adaptive Front Lighting Wiring Diagram (2 of 2) for Lexus GS 450h 2008 List of elements for Adaptive Front Lighting Wiring Diagram (2 of 2) for Lexus GS 450h 2008: 55 +ig A24 A25 A26 A33 A40 Afs off ind Afs+ Afs- Auto Becu Body ecu C15 Combination meter Computer data lines system D11 Dimmer switch Dome fuse 7.5a Engine room r/b 1 (left side of engine compt) Flash Gauge fuse 7.5a Head Headlamp dimmer switch assembly High Hot at all times Hot w/ ig2 relay energized J/c a32 & a33 (behind left end of dash) J15 K22 K31 K4 (behind right kick panel) K67 K68 K70 Left center j/b (behind right side of dash) Light control switch Low Master ind Mpx+ Mpx- Mpx-b fuse 7.5a Mpx1 Mpx2 Multi- information display Off Pnk Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Ss1+ Ss1- Steering control ecu (under glove box) Steering sensor (behind left side of dash, near steering column) Tail Windshield wiper switch assembly Headlamps & Fog Lamps Wiring Diagram (1 of 2) for Lexus GS 450h 2008 List of elements for Headlamps & Fog Lamps Wiring Diagram (1 of 2) for Lexus GS 450h 2008: 83 +ig A24 A25 A26 A32 Acc Acc fuse 7.5a Auto Automatic light control sensor (under upper center of dash) Batb Beam ind Becu Bfg Body ecu C15 Cltb Clte Clts Combination meter Computer data lines system D11 D14 D18 Dcty Dimmer switch Dome fuse 7.5a Ecu-ig rh fuse 10a Engine room r/b 1 (left side of engine compt) Flash Fog switch Fr door rh fuse 20a Front fog ind G11 Gauge fuse 7.5a Gnd2 Head Headlamp dimmer switch assembly High Hot at all times Hot w/ acc relay energized Hot w/ ig2 relay energized Hot w/ rh-ig relay 1 energized Hrly J/c a32 & a33 (behind left end of dash) J/c u22 (right front of luggage compt) J14 J15 K1 (behind left kick panel) K2 (under left side of floor console) K22 K31 K4 (behind right kick panel) K67 K68 L10 Left center j/b (behind left side of dash) Left center j/b (behind right side of dash) Left cowl side j/b (behind left end of dash) Left front door courtesy switch (in left "b" pillar) Lfg Light control switch Low M13 M14 Master ind Mpx+ Mpx- Mpx- b fuse 7.5a Mpx1 Mpx2 Multi information display Off Parking brake switch (behind left side of dash) Pkb Pnk Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Tail Tail/ head ind Telltale lamp assembly To front controller (diagram 2 0f 2) Windshield wiper switch assembly Headlamps & Fog Lamps Wiring Diagram (2 of 2) for Lexus GS 450h 2008 List of elements for Headlamps & Fog Lamps Wiring Diagram (2 of 2) for Lexus GS 450h 2008: 28 (right front of engine compt) b1 (under left headlight assembly) b2 A2 (left rear corner of engine compt) Ecu-ig lh fuse 10a Engine room j/b 1 (left side of engine compt) Engine room r/b 1 (left side of engine compt) Fr fog fuse 15a Fr fog relay From j/c a32 & a33 (diagram 1 of 2) Front controller H-lp l lwr fuse 15a H-lp r lwr fuse 15a H-lp upr fuse 20a Head lp relay High Hot at all times Hot w/ lh-ig relay 2 energized J/c a11 (left side of engine compt) J/c a32 (behind left end of dash) Left cowl side j/b (behind end of dash) Left front fog lamp Left headlamp assembly Light control ecu Low (hid) Main fuse 30a Red Right front fog lamp Right headlamp assembly
HORN Horn Wiring Diagram for Lexus GS 450h 2008 List of elements for Horn Wiring Diagram for Lexus GS 450h 2008: 21 A2 (left rear corner of engine compt) Computer data lines system Ecu-ig lh fuse 10a Engine room j/b 1 (left side of engine compt) Engine room r/b 1 (left side of engine compt) Front controller High horn (in front of right side of radiator) Horn fuse 10a Horn relay Horn switch Hot at all times Hot in on or start J/c a11 (left side of engine compt) J/c a32 (behind left end of dash) Left cowl side j/b (behind left end of dash) Low horn (in front of left side of radiator) Mbx-b fuse 7.5a Mpx1 Mpx2 Spiral cable (in steering column) Windshield wiper switch assembly
INSTRUMENT CLUSTER
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram (1 of 4) for Lexus GS 450h 2008 List of elements for Courtesy Lamps Wiring Diagram (1 of 4) for Lexus GS 450h 2008: 66 (behind right end of dash) gateway ecu (behind right end of dash) power source control ecu (in left "c" pillar) (in right "c" pillar) A10 A11 A15 A26 Body ecu Combination meter Computer data lines system D10 Dcty Dome fuse 7.5a E10 E13 Engine room r/b 1 (left side of engine compt) Fspt Gnd2 Hot at all times J/c u22 & u23 (right front of luggage compt) J/c u22 (right front of luggage compt) K13 K14 K2 (under left of side floor console) K2 (under left side of floor console) K4 (behind right kick panel) K68 L10 Lcty Left center j/b (behind left side of dash) Left foot lamp Left front door courtesy switch (in left "b" pillar) Left rear door courtesy switch Left rear foot lamp Left vanity lamp Left vanity lamp switch M13 M15 Mpd1 Mpi1 Mpi2 Mpl1 Mpl2 Mpx1 Mpx2 Parking brake switch (behind left side of dash) Pcty Pkb Pnk Power switch Rcty Red Red f10 Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Right foot lamp Right front door courtesy switch Right rear door courtesy switch Right rear foot lamp Right vanity lamp Right vanity lamp switch Swil U22 U23 Ul2 Courtesy Lamps Wiring Diagram (2 of 4) for Lexus GS 450h 2008 List of elements for Courtesy Lamps Wiring Diagram (2 of 4) for Lexus GS 450h 2008: 53 (left front of luggage compt) j/c v27 (left side of luggage compt) v2 (under driver's seat) v1 A14 A30 Bdcy Bdr Body ecu C24 Computer data lines system Cpub Ctyb Cyl Gnd Hot at all times Hot in on or start Ile J/c q11 (in left front door) J/c q12 (in left front door) J12 K1 (behind left kick panel) K2 (under left side of floor console) Lcty Led+ Led- Left cowl side j/b (behind left end of dash) Left front door courtesy lamp Left front door ecu (in driver's door) Left front inside handle illumination Left outer scuff lamp Left rear door courtesy lamp Left rear door ecu (in left rear door) Left rear inside handle illumination Lgcy Lh fr door fuse 20a Lh rr door fuse 20a Lh-ig fuse 10a Luggage compartment door striker switch (rear center of luggage compt) Luggage room j/b (left side of luggage compt) Luggage room lamp M10 Mpx1 Mpx2 Mpx4 Pnk Rcty Red Rr-b fuse 10a Sel1 Sele Sgnd Sig Steering spot lamp Courtesy Lamps Wiring Diagram (3 of 4) for Lexus GS 450h 2008 List of elements for Courtesy Lamps Wiring Diagram (3 of 4) for Lexus GS 450h 2008: 23 Cpu D29 Door Hot in on or start Left center j/b (behind left side of dash) Left cowl side j/b (behind left end of dash) Left front map lamp Left front seat spot lamp Left reading lamp Left reading lamp switch Lh ecu-ig fuse 10a Off Overhead j/b (in overhead console) Pnk Rear seat spot lamp Red Right center j/b (behind right side of dash) Right front map lamp Right front seat spot lamp Right reading lamp Right reading lamp switch Room lamp Shift illumination Courtesy Lamps Wiring Diagram (4 of 4) for Lexus GS 450h 2008 List of elements for Courtesy Lamps Wiring Diagram (4 of 4) for Lexus GS 450h 2008: 43 (under front passenger's seat) u1 A32 A33 Bdr Computer data lines system Cpub Ctyb Cyl Engine room r/b 1 (left side of engine compt) Hot at all times Hot in on ot start J/c a32 & a33 (behind left end of dash) J/c q4 (in right front door) J/c q5 (in right front door) J/c u22 & u23 (right front of u23 luggage compt) J13 J18 J19 J20 Led+ Led- Left cowl side j/b (behind left end of dash) Mpx-b fuse 7.5a Mpx1 Mpx2 O3 gnd Pnk Red Rh fr door fuse 20a Rh rr door fuse 20a Rh-ig fuse 7.5a Right cowl side j/b (behind right end of dash) Right front door courtesy lamp Right front door ecu (in right front door) Right front inside handle illumin- ation Right outer scuff lamp Right rear door courtesy lamp Right rear door ecu (in right rear door) Right rear inside handle illumination Sel1 Sele Sig U22 Instrument Illumination Wiring Diagram (1 of 2) for Lexus GS 450h 2008 List of elements for Instrument Illumination Wiring Diagram (1 of 2) for Lexus GS 450h 2008: 49 A/t shift lever illumination A14 A30 Body ecu Center register illumination Cigarette lighter Computer data lines system Console box lamp D15 D20 D21 Driver's side register illumination Eau F15 Front passenger's side register illumination G13 Gnd Hill Hot at all times Hreo I10 I15 Il+2 Ill Ill+ Ill- K1 (behind left kick panel) K10 K2 (under left side of floor console) K3 (under right side of floor console) K46 K54 K56 L11 L12 L13 Left center j/b (behind right side of dash) Left cowl side j/b (behind left end of dash) Mpx1 Mpx4 Multi- display Panel fuse 7.5a Pnk Radio receiver assembly Red Sgnd Spiral cable (in steering column) Swg Tail relay Instrument Illumination Wiring Diagram (2 of 2) for Lexus GS 450h 2008 List of elements for Instrument Illumination Wiring Diagram (2 of 2) for Lexus GS 450h 2008: 71 (behind left end of dash) left cowl side j/b (behind left kick panel) k1 (behind right end of dash) gateway ecu (behind right side of dash) right center j/b A10 A24 A25 A26 A32 A33 Absorber control switch Auto Becu Body ecu C15 Combination meter Computer data lines system D11 D14 D4 pnk Dome fuse 7.5a E13 E15 Engine room r/b 1 (left side of engine compt) F14 G11 G14 Gauge fuse 7.5a Glove box lamp Gnd2 H14 Head Headlamp dimmer switch assembly Hot at all times Hot in on or start Hybrid mode select switch I14 Illumination back Illumination multi Illumination pointer J/c a17 (left rear corner of engine compt) J/c a32 & a33 (behind left end of dash) J14 K2 (under left side of floor console) K22 K31 K4 (behind right kick panel) K67 K68 Left center j/b (behind left side of dash) Left cowl side j/b (behind left end of dash) Light control switch Master ind Mpi1 Mpi2 Mpl1 Mpl2 Mpx-b fuse 7.5a Mpx1 Mpx2 Multi-info display Off Pnk Red Rh ecu-ig fuse 10a Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Seat heater switch Tail Traction control switch Windshield wiper switch assembly
MEMORY SYSTEMS Driver"s Memory Seat Wiring Diagram (1 of 2) for Lexus GS 450h 2008 List of elements for Driver"s Memory Seat Wiring Diagram (1 of 2) for Lexus GS 450h 2008: 40 Ant Asel Certification ecu (right side of luggage compt) Computer data lines system D18 Data Door control receiver (right rear of luggage compt) Driver's seat position control ecu & switch (left side of driver's seat) Electrical key antenna (base of right "c" pillar) Frv+ Frv- Gnd Hot at all times J/c b5 (under left side of driver's seat) J/c u25 (right front of luggage compt) J22 Left cowl side j/b (behind left end of dash) Lft+ Lft- Lh fr p/seat fuse 30a Mpx1 Mpx2 Pnk Power seat motor (driver's seat front vertical control) (under driver's seat) Power seat motor (driver's seat lumbar support) (in driver's seat) Power seat motor (driver's seat rear vertical control) (under driver's seat) Power seat motor (driver's seat reclining control) (under driver's seat) Power seat motor (driver's seat slide control) (under driver's seat) Power seat switch (driver's seat lumbar support) Rc0 Rcl+ Rcl- Rda Red Rssi Sld+ Sld- Sysb U2 (in right "c" pillar) V1 (under driver's seat) Driver"s Memory Seat Wiring Diagram (2 of 2) for Lexus GS 450h 2008 List of elements for Driver"s Memory Seat Wiring Diagram (2 of 2) for Lexus GS 450h 2008: 44 A26 A32 A33 Body ecu Ca1h Ca1l Canh Canl Certification key ecu (right side of luggage compt) Computer data lines system D14 Dcty Driver's door ecu (in driver's door) Driver's seat memory switch Engine room r/b 1 (left side of engine compt) Gateway ecu (behind right end of dash) Hot at all times Hybrid vehicle control ecu (left side of engine compt) Ig1d J/c a32 & a33 (behind left end of dash) J/c u22 (right front of luggage compt) K4 (behind right kick panel) K68 Left center j/b (behind right side of dash) Left front door courtesy switch (in left "b" pillar) M13 M14 Mpd1 Mpd2 Mpl1 Mpl2 Mpx-b fuse 7.5a Mpx1 Mpx2 Mswe Pnk Power source control ecu (behind right end of dash) Power window master switch Red Rh ecu-ig fuse 10a Rh-ig relay 1 Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Set Memory Mirrors Wiring Diagram for Lexus GS 450h 2008 List of elements for Memory Mirrors Wiring Diagram for Lexus GS 450h 2008: 58 (behind right end of dash) power source control ecu A32 A54 Bdr Ca1h Ca1l Canh Canl Certification ecu (right side of luggage compt) Computer data lines system Cpub D11 D12 Driver's seat memory switch Engine room r/b 1 (left side of engine compt) Gateway ecu (behind right end of dash) Gnd Hot at all times Hssl Hssr Hybrid vehicle control ecu (left side of engine compt) Ig1d J/c a32 & a33 (behind left end of dash) a33 J18 K1 (behind left kick panel) Left cowl side j/b (behind left end of dash) Left front door ecu (in driver's door) Left outer rear view mirror (front of left front door) Left/right motor Lh fr door fuse 20a Lh-ig fuse 10a Lh-ig relay 1 M10 Mpd1 Mpd2 Mpi1 Mpi2 Mpx-b fuse 7.5a Mpx1 Mpx2 Mswe Pnk Power window master switch Red Retractable mirror motor Right cowl side j/b (behind right end of dash) Right front door ecu (in right front door) Right outer rear view mirror (front of right front door) Sel1 Sele Sensor Set Sig U1 (under front passenger's seat) Up/down motor V1 (under driver's seat) Vssl Vssr Memory Power Tilt & Power Telescopic Wiring Diagram for Lexus GS 450h 2008 List of elements for Memory Power Tilt & Power Telescopic Wiring Diagram for Lexus GS 450h 2008: 70 (in driver's door) left front door ecu A15 A18 A32 A54 Ca1h Ca1l Canh Canl Certification ecu (right side of luggage compt) Computer data lines system D14 D18 D6 pnk Down Driver's seat memory switch Ecub Engine room r/b 1 (left side of engine compt) G11 Gateway ecu (behind right end of dash) Gnd Headlamp dimmer switch assembly Hot at all times Hybrid vehicle control ecu (left side of engine compt) Ig1d J/c a32 & a33 (behind left end of dash) a33 J14 K1 (behind left kick panel) K2 (under left side of floor console) K22 K4 (behind right kick panel) Left center j/b (behind right side of dash) Left cowl side j/b (behind left end of dash) Long Mpd1 Mpd2 Mpl1 Mpl2 Mpx-b fuse 7.5a Mpx1 Mpx2 Msw Mswe Pnk Power source control ecu (behind right end of dash) Power window master switch Red Rh ecu-ig fuse 10a Rh-ig relay 1 Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Sensor tilt Set Short Telescopic motor Telescopic sensor Tem+ Tem- Tes Ti & te fuse 20a Tilt & telescopic ecu (top right side of steering column) Tilt & telescopic switch Tilt motor (under left side of dash) Tim+ Tim- Tis U28 Vce Vci Windshield wiper switch assembly Passenger"s Memory Seat Wiring Diagram (1 of 2) for Lexus GS 450h 2008 List of elements for Passenger"s Memory Seat Wiring Diagram (1 of 2) for Lexus GS 450h 2008: 41 A54 Ca1h Ca1l Canh Canl Certification ecu (right side of luggage compt) Computer data lines system Front passenger's seat position control ecu & switch (right side of front passenger's seat) Front seat) Frv+ Frv- Gateway ecu (behind right end of dash) Gnd Hot at all times Hybrid vehicle control ecu (left side of engine compt) J/c a5 (under right side of front passenger's seat) J29 Lft+ Lft- Mpd1 Mpd2 Mpl1 Mpl2 Mpx1 Mpx2 Pnk Power seat motor (front passenger's seat front vertical control) (under right front seat) Power seat motor (front passenger's seat lumbar support) (in right front seat) Power seat motor (front passenger's seat rear vertical control) (in right Power seat motor (front passenger's seat reclining control) (in right front seat) Power seat motor (front passenger's seat slide control) (under right front seat) Power seat switch (front passenger's seat lumbar support) (in right front seat) Rcl+ Rcl- Red Rh fr p/seat fuse 30a Right cowl side j/b (behind right end of dash) Sld+ Sld- Sysb U1 (under front passenger's seat) Passenger"s Memory Seat Wiring Diagram (2 of 2) for Lexus GS 450h 2008 List of elements for Passenger"s Memory Seat Wiring Diagram (2 of 2) for Lexus GS 450h 2008: 23 A32 A33 Computer data lines system Engine room r/b 1 left side of engine compt) Front passenger's door ecu (in right front door) Front passenger's seat memory switch Hot at all times Ig1d J/c a32 & a33 (behind left end of dash) J14 J28 K4 (behind right kick panel) Mpx-b fuse 7.5a Mpx1 Mpx2 Mswe Pnk Power source control ecu (behind right end of dash) Red Rh ecu-ig fuse 10a Rh-ig relay 1 Right cowl side j/b (behind right end of dash) Set
NAVIGATION Mayday Wiring Diagram (1 of 2) for Lexus GS 450h 2008 List of elements for Mayday Wiring Diagram (1 of 2) for Lexus GS 450h 2008: 76 (except mark levinson) right front door speaker (under center floor console) air bag sensor assembly center A22 A27 A32 A33 Acc Acc fuse 7.5a Bbi+ Bbi- Computer data lines system D27 Ecu-b fuse 10a Engine room r/b 1 (left side of engine compt) Except mark levinson Fr+ Fr- u30 Gnd Gps antenna Gsw Gsw3 H12 Hfof Hot at all times Hot in on Ig2 Ign fuse 10a Ind1 Ind2 J/c a32 & a33 (behind left end of dash) J/c u25 (right front of luggage compt) J12 J27 K44 Left center j/b (behind left side of dash) Lexus link switch Mark levinson Mayday ecu (right front of luggage compartment) Mci+ Mci- Mco+ Mco- Mcvd Mi1+ Microphone Mute Mxp1 Nca Or acc Or start Overhead j/b (in overhead console) Pnk Red Right cowl side j/b (behind right end of dash) Right front tweeter Sig- Sig1 Sig2 Sigi Sil Sled Spi+ Spi- Spo+ Spo- Stereo component amplifier (right rear corner of luggage compt) Telephone antenna Tmut u29 Twr+ Twr- U2 (in right "c" pillar) U31 U45 U46 W8 mic- Wfse Mayday Wiring Diagram (2 of 2) for Lexus GS 450h 2008 List of elements for Mayday Wiring Diagram (2 of 2) for Lexus GS 450h 2008: 42 A26 A39 Anti-theft system Bbo+ Bbo- Body ecu Computer data lines system Engine room j/b 1 (left side of engine compt) Front controller Headlights system Hfof Horn fuse 10a Horn relay Horns system Hot at all times Hrly J21 K22 K46 K47 K68 Left front door ecu (in driver's door) Left front door lock assembly (rear of left front door) Left rear door ecu (in left rear door) Left rear door lock assembly (rear of left rear door) M10 Mayday battery (right front of luggage compartment) Min+ Min- Mpx1 Mpx1 mpx2 Mpx2 Mpx2 mpx1 Multi-display Pnk Red Right cowl side j/b (behind right end of dash) Right front door ecu (in right front door) Right front door lock assembly (rear of right front door) Right rear door ecu (in right rear door) Right rear door lock assembly (rear of right rear door) Windshield wiper switch assembly Navigation Wiring Diagram (1 of 2) for Lexus GS 450h 2008 List of elements for Navigation Wiring Diagram (1 of 2) for Lexus GS 450h 2008: 75 A25 A32 Acc Adet Ca+ Cb+ Cgnd Cmp+ Cmp- Csld Cv+ Cv- Engine room r/b 1 (left side of engine compt) Gauge fuse 7.5a Gnd Gps antenna Gvif Hfof Hot at all times Hot in on or start Ii1+ Ii1- Isld Ivi+ Ivi- Ivo+ Ivo- J/c a32 & a33 (behind left end of dash) a33 K47 K53 K56 Macc Mayday ecu (right front of luggage compt) Mco+ Mco- Mi1+ Mic+ Mic- Min+ Min- Mpx-b fuse 7.5a Msld Multi-display Multi-media module navigation assembly Navigation assembly multi-media module Nca Ntsc Overhead j/b (in overhead console) Pnk Radio receiver assembly Red Rev Right cowl side j/b (behind right end of dash) Sgnd Sld Spd Stereo component amplifier (right rear corner of luggage compt) Television camera (right side of luggage compt) Tsw- Tx+ Tx- Txm+ Txm- U29 U45 V30 Vv+ Vv- W/ mark levinson W/ mayday system W/o mark levinson W/o mayday system Wiring harness spool (under center of rear parcel shelf) y1 Z16 Z17 Navigation Wiring Diagram (2 of 2) for Lexus GS 450h 2008 List of elements for Navigation Wiring Diagram (2 of 2) for Lexus GS 450h 2008: 55 (left rear of engine compt) skid control ecu +b1 A13 A24 A30 Acc Acc fuse 7.5a Back Body ecu C15 Cmp+ Cmp- Combination meter Computer data lines system D11 D14 D27 D28 G11 Gnd1 H15 Hfof Hill Hot at all times Hot in on or acc Hot in on or start Hreo Ill+ Ill- Interior lights system J15 K1 (behind left kick panel) K31 K4 (behind right kick panel) K46 L10 Left center j/b (behind left side of dash) Left cowl side j/b (behind left end of dash) Mpx1 Mpx4 Multi- information display Multi-display Nca Parking brake switch (behind left side of dash) Pkb Pnk Red Rev Rh ecu-ig fuse 10a Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Sld Sp1 Spd Tv fuse 7.5a Rear Sonar Wiring Diagram for Lexus GS 450h 2008 List of elements for Rear Sonar Wiring Diagram for Lexus GS 450h 2008: 87 (behind left end of dash) (behind left side of dash) left center j/b (below center of dash) clearance warning buzzer (left rear of engine compt) a1 +bs A10 A11 A13 A14 A25 A26 A30 A32 A33 A54 Body ecu C15 Caih Cail Canh Canl Cbz Clearance sonar ind Clearance sonar switch Clearance warning ecu (behind right end of dash) Combination meter Computer data lines system D11 D13 D14 Dome fuse 7.5a E84 Ecu-b fuse 10a Engine room r/b 1 (left side of engine compt) G11 Gateway ecu (behind right end of dash) Gauge fuse 7.5a Gnd Hot at all times Hot in on or start Hot w/ lh-ig relay 1 energized Hot w/ rh-ig relay 1 energized Hybrid vehicle control ecu (left side of engine compt) Ig+ J/c a10 & a11 (left side of engine compt) J/c a32 J/c a32 & a33 (behind left end of dash) J15 K1 (behind left kick panel) K15 K31 K4 (behind right kick panel) K68 L10 Left cowl side j/b (behind left end of dash) Left front center ultrasonic sensor (behind left center of front fascia) Left front corner ultrasonic sensor (behind left side of front fascia) Left rear center ultrasonic sensor (behind left center of rear fascia) Left rear corner ultrasonic sensor (behind left side of rear fascia) Lh-ig fuse 10a Master ind Mpd1 Mpd2 Mpi1 Mpi2 Mpl1 Mpl2 Mpx+ Mpx- Mpx1 Mpx2 Mpx4 Multi- information display Park/neutral position switch (on transmission) Parking brake switch (behind left side of dash) Pkb Pnk Red Rh-ig fuse 7.5a Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Right front center ultrasonic sensor (behind right center of front fascia) Right front corner ultrasonic sensor (behind right side of front fascia) Right rear center ultrasonic sensor (behind right center of rear fascia) Right rear corner ultrasonic sensor (behind right side of rear fascia) Skid control ecu (left rear of engine compt) Sp1
PASSIVE RESTRAINTS Passive Restraints Wiring Diagram for Lexus GS 450h 2008 List of elements for Passive Restraints Wiring Diagram for Lexus GS 450h 2008: 29 Buckle sw C29 Driver's side seat inner belt (under driver's seat) Front passenger's seat inner belt (under front passenger's seat) Hot in on or start J/c a5 (under right side of front passenger's seat) J/c b5 (under left side of driver's seat) J/c u22 (right front of luggage compt) J/c u25 (right front of luggage compt) J/c v27 (left front of luggage compt) J11 J12 J13 Left cowl side j/b (behind left end of dash) Left front seat outer belt (near base of left "b" pillar) Left rear seat inner belt (behind center of rear seat) Left rear seat outer belt (near base of left "c" pillar) Lh-ig fuse 10a Luggage room j/b (left side of luggage compt) Rh-ig fuse 7.5a Right cowl side j/b (behind right end of dash) Right front seat outer belt (near base of right "b" pillar) Right rear seat inner belt (behind center of rear seat) Right rear seat outer belt (near base of right "c" pillar) Rr-ig1 fuse 10a U1 (under front passenger's seat) U2 (in right "c" pillar) V1 (under driver's seat) V2 (left side of luggage compt)
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 3) for Lexus GS 450h 2008 List of elements for Power Distribution Wiring Diagram (1 of 3) for Lexus GS 450h 2008: 92 (behind right end of dash) right cowl side j/b (center rear of luggage compartment) luggage room r/b 6 (left side of engine compartment) engine room j/b 1 (left side of engine compartment) engine room r/b 1 A/f fuse 15a A/f relay A2 (left rear corner of engine compartment) A23 A25 A27 Abs main1 fuse 10a Abs main2 fuse 10a Abs main3 fuse 10a Abs motor fuse 30a Abs1 fuse 50a Abs2 fuse 30a Air conditioning system Anti-lock brakes system Batt fan fuse 20a Battery 1 Battery 2 Cooling fans system D/c cut fuse 30a Dc/dc fuse 140a Defog fuse 50a Defogger system Dome fuse 7.5a Door locks system E/g-b fuse 30a Ecu-b fuse 10a Efi 2 relay Efi fuse 25a Efi main relay Electronic power steering system Electronic power steering, trunk, tailgate, fuel doors, wiper/washer, navigation, mirrors & power tops systems Electronic suspension system Engine controls system Eps fuse 80a Exterior lights system F/pmp fuse 25a Fr stb fuse 50a From oil a pmp fuse engine room j/b 1 (diagram 1 of 3) Fuse block (left rear corner of luggage compartment) Fusible link block 1 (right front of luggage compartment) Fusible link block 2 (left side of luggage compartment) Gauge fuse 7.5a Headlights system Heater fuse 50a Ig2 Ig2 fuse 10a Ig2 main fuse 20a Igct 1 fuse 20a Igct relay Ign fuse 10a Inj fuse 20a Inj relay Inv w/p fuse 10a Inv w/p relay Left cowl side j/b (behind left end of dash) Lh fr door fuse 20a Lh rr door fuse 20a Lh-j/b fuse 30a Main fuse 150a Main fuse 30a Mpx-b fuse 7.5a Oil pmp fuse 80a P/i-b1 fuse 60a P/i-b2 fuse 60a R/b-b fuse 15a Rad 1 fuse 30a Rad 2 fuse 30a Rad 3 fuse 10a Rad fan fuse 60a Red Relay Rh-j/b fuse 30a Rr stb fuse 30a Sound & navigation systems Sound systems Stb dc/dc fuse 30a Stb fuse 80a To abs main3 fuse engine room r/b 1 (diagram 1 of 3) To am2 fuse right kick panel j/b (diagram 3 of 3) To e/g-am fuse engine room j/b 1 (diagram 2 of 3) To power source control ecu (diagram 3 of 3) To relief vlv fuse engine room r/b 1 (diagram 2 of 3) Transmissions & cruise control systems Transmissions & engine controls systems Transmissions system Transmissions, engine controls & cruise control systems Turn- haz fuse 15a Vgrs fuse 40a Power Distribution Wiring Diagram (2 of 3) for Lexus GS 450h 2008 List of elements for Power Distribution Wiring Diagram (2 of 3) for Lexus GS 450h 2008: 83 (left side of engine compartment) engine room j/b 1 (left side of engine compartment) engine room r/b 1 (not used) A/c fuse 7.5a A27 Air conditioning system C14 C24 C29 C30 C33 Cruise control & engine controls systems D20 D21 D22 D27 D28 Defogger system Deicer fuse 25a E/g-am fuse 60a Electronic suspension system Engine controls system Etcs fuse 10a Fr ctrl-am fuse 30a Fr ctrl-b fuse 25a Fr fog fuse 15a Fr fog relay Fr tail fuse 10a Fr tail relay From defog fuse engine room j/b 1 (diagram 1 of 3) From e/g-b fuse engine room j/b 1 (diagram 1 of 3) From eg-am fuse engine room j/b 1 (diagram 2 of 3) Front controller Fuel open fuse 10a H-lp cln fuse 30a H-lp upr fuse 20a Horn fuse 10a Horn relay Ig1 relay Interior lights system Interior lights systems J/c v27 (left front of luggage compartment) J16 J22 L stop lp fuse 10a Left cowl side j/b (behind left end of dash) Left cowl side j/b body ecu Lh fr p/seat fuse 30a Lh j/b-am fuse 80a Lh-b fuse 10a Luggage room j/b (left side of luggage compartment) Luggage room j/b ecu Navigation & sound systems Of luggage compartment) v2 Panel fuse 7.5a Passive restraint system Pnk Power tops system Psb fuse 30a R stop lp fuse 10a Red Relief vlv fuse 10a Rh j/b-am fuse 80a Rr j/b fuse 80a Rr s/shade relay Rr tail fuse 10a Rr-b fuse 10a Rr-ig1 fuse 10a Rr-ig2 fuse 10a S/roof fuse 25a Seats & memory systems Stb-am fuse 30a Tail relay To h-lp cln fuse engine room r/b 1 (diagram 2 of 3) To lh-ig relay 1 left cowl side j/b (diagram 3 of 3) To rr-ig fuse left cowl side j/b (diagram 3 of 3) To security fuse right cowl side j/b (diagram 3 of 3) Trk open fuse 10a Trunk, tailgate, fuel doors system Tv fuse 7.5a Wash fuse 20a Wash relay Wiper/washer system Power Distribution Wiring Diagram (3 of 3) for Lexus GS 450h 2008 List of elements for Power Distribution Wiring Diagram (3 of 3) for Lexus GS 450h 2008: 113 (behind left end of dash) left cowl side j/b (behind right end of dash) right cowl side j/b (not used) A/c w/p fuse 7.5a A10 A13 A15 A16 Acc fuse 7.5a Acc relay Accd Air conditioning system Air conditioning, shift interlock, navigation, memory, sound, wiper/washer, door locks, computer data lines, anti-theft, headlights, cruise control, interior lights, electronic suspension & warning systems Air sus fuse 20a Am1 Am1 fuse 7.5a Am2 Am2 fuse 15a C15 Cig fuse 15a Cigarette lighter Computer data lines system Computer data lines systems D11 D12 D13 D14 D19 D22 D26 D27 D28 D29 Defogger, navigation, air conditioning, cooling fans & wiper/washer systems Door locks & anti-theft systems Door locks & defogger systems Door locks system E13 Electronic power steering & anti-lock brakes systems Electronic suspension system Electronic suspension, power tops, mirrors systems anti-lock brakes, interior lights, cruise control systems & garage door opener Exterior lights system Exterior lights, headlights & horns systems Fr wip fuse 30a From fuse lh fr p/seat htr left kick panel j/b (diagram 2 of 3) From ig1 relay luggage room j/b (diagram 2 of 3) From ig2 relay engine room r/b 1 (diagram 1 of 3) From rh-j/b fuse fuse block (diagram 1 of 3) From rr j/b-am fuse engine room j/b 1 (diagram 2 of 3) H-lp lvl fuse 7.5a Headlights system Ig1d Ig2d Interior lights system, power windows system, door locks & defogger systems J/c u25 (right front of lugguage compartment) J11 J12 J13 J14 J16 J23 J29 J30 K1 (behind left kick panel) K10 K2 (under left side of floor console) K4 (behind right kick panel) Left center j/b (behind right side of dash) Left cowl side j/b body ecu Lh ecu-ig fuse 10a Lh fr s/htr fuse 7.5a Lh-ig fuse 10a Lh-ig relay 1 Lh-ig relay 2 Memory systems Obd fuse 7.5a Passive restraint system Passive restraint, door locks & anti-lock brakes systems Pnk Power outlet socket Power source control ecu (behind right end of dash) Power switch Pwr outlet fuse 15a Pwr outlet relay Red Rh ecu-ig fuse 10a Rh fr door fuse 20a Rh fr p/seat fuse 30a Rh fr s/htr fuse 15a Rh rr door fuse 20a Rh-ig fuse 7.5a Rh-ig relay 1 Rh-ig relay 2 Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Right cowl side j/b body ecu Rr-ig fuse 7.5a Seats & memory systems Seats & transmissions systems Seats system Security fuse 7.5a Shift interlock system Sound & door locks systems Ss1 Ss2 Ssw1 Ssw2 Stop sw fuse 7.5a Str lock fuse 25a Ti & te fuse 20a Transmissions, engine controls, cruise control, anti-lock brakes, exterior lights & shift interlock systems U2 (in right "c" pillar) Wiper/washer system
POWER DOOR LOCKS Power Door Locks Wiring Diagram (1 of 6) for Lexus GS 450h 2008 List of elements for Power Door Locks Wiring Diagram (1 of 6) for Lexus GS 450h 2008: 50 A30 A32 Bdcy Bdr Body ecu Computer data lines system Cpub D11 Engine room r/b 1 (left side of engine compt) Gnd Hot at all times J/c a32 & a33 (behind left end a33 of dash) J/c v27 (left front of luggage compt) J12 J18 J19 J20 K2 (under left side of center console) Kul Left cowl side j/b (behind left end of dash) Left front door ecu (in driver's door) Left front door lock assembly (rear of left front door) Left rear door ecu (in left rear door) Left rear door lock assembly (rear of left rear door) Lh fr door fuse 20a Lh ig fuse 10a Lh ig relay 1 Lh rr door fuse 20a Lsw Lswe Luggage compartment door striker switch (rear center of luggage compt) Luggage room j/b (left side of luggage compt) M10 Mpx-b fuse 7.5a Mpx1 Mpx2 Mpx4 Oscb Osce Pnk Power window master switch Red Sel1 Sele Sgnd Sig Sigj Trg+ V1 (under driver's seat) V2 (left side of luggage compt) Power Door Locks Wiring Diagram (2 of 6) for Lexus GS 450h 2008 List of elements for Power Door Locks Wiring Diagram (2 of 6) for Lexus GS 450h 2008: 61 (in right "c" pillar) u2 (right side of luggage compt) certification ecu +b1 A12 Acc Ant Ant1 Ant2 Asel B12 Cg1b Cg2b Cg3b Cg4b Clg Clg1 Clg2 Clg3 Clg4 Clgb Computer data lines system Data Door control receiver (right rear of luggage compt) Electrical key antenna (base of right "c" pillar) Gnd J/c u25 (right front of luggage compt) Left center j/b (behind left side of dash) Left front door electrical key oscillator (w/ wireless door lock control) (in left front door) Left front door outside handle Left rear door electrical key oscillator (w/ wireless door lock control) (in left rear door) Left rear door outside handle Mpx1 Mpx2 Pnk Rc0 Rda Red Right center j/b (behind right side of dash) Right front door electrical key oscillator (w/ wireless door lock control) (in right front door) Right front door outside handle Right rear door electrical key oscillator (w/ wireless door lock control) (in right rear door) Right rear door outside handle Rssi Sel Sel1 Sel2 Sel3 Sel4 Sen1 Sen2 Sen3 Sen4 Sens Sgt Sgt2 Trg+ Trg- U2 (in right "c" pillar) U28 U33 W/ wireless door lock control Power Door Locks Wiring Diagram (3 of 6) for Lexus GS 450h 2008 List of elements for Power Door Locks Wiring Diagram (3 of 6) for Lexus GS 450h 2008: 63 A2 (left rear corner of engine compt) A39 Acc fuse 7.5a Batb Bdr Becu Body ecu Bzr Computer data lines system Cpub D12 D14 D22 Dcty Dle Door lock control switch Gnd Hot at all times Hot w/ acc relay energized J/c u22 & u23 (right front of luggage compt) J13 J19 J20 J23 K4 (behind right kick panel) Left center j/b (behind left side of dash) Left front door courtesy switch (in left "b" pillar) Lock Lsw Lswe M13 Mpx1 Mpx2 Oscb Osce Pml Pmul Pnk Pws Rcty Red Rh ecu-ig fuse 10a Rh fr door fuse 20a Rh ig fuse 7.5a Rh ig relay 1 Rh ig relay 2 Rh rr door fuse 20a Right cowl panel j/b (behind right end of dash) Right front door ecu (in right front door) Right front door lock assembly (rear of right front door) Right rear door courtesy switch (in right "c" pillar) Right rear door ecu (in right rear door) Right rear door lock assembly (rear of right rear door) Security fuse 7.5a Sel1 Sele Sig Trg+ U1 (under front passenger's seat) U22 U23 Unlock Wireless door lock buzzer (left rear corner of engine compt) Power Door Locks Wiring Diagram (4 of 6) for Lexus GS 450h 2008 List of elements for Power Door Locks Wiring Diagram (4 of 6) for Lexus GS 450h 2008: 68 (under center floor console) air bag sensor assembly center A11 A26 A39 A53 Anti-lock brakes system Body ecu Buckle switch Ca1h Ca1l Canh Canl Ccty Cls Combination meter Computer data lines system Cty Driver's side front seat inner belt (under driver seat) E10 Engine control module (left side of engine compt) Exterior lights system F10 Gateway ecu (behind right end of dash) Gnd2 Haz Ind Ind lamp security J/c v30 & y1 K2 (under left side of floor console) K4 (behind right kick panel) K44 K46 K67 K68 Ksw Lbe+ Lbe- Lcls Lcm+ Lcm- Lcty Left cowl side j/b (behind left end of dash) Left rear door courtesy switch (in left "c" pillar) Lopn Lpsw Luggage compartment door closer Luggage compartment door opener switch Mpd1 Mpd2 Mpi1 Mpi2 Mpl1 Mpl2 Mpx+ Mpx- Mpx1 Mpx2 Multi-display Opn Pcty Pnk Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Right front door courtesy switch Security horn (right front of engine compt) V16 V30 Power Door Locks Wiring Diagram (5 of 6) for Lexus GS 450h 2008 List of elements for Power Door Locks Wiring Diagram (5 of 6) for Lexus GS 450h 2008: 65 (at left "c" pillar) rear seat electrical key oscillator (behind right side of dash) right center j/b (center rear of luggage compt) outside luggage room electrical key oscillator (left side of luggage compt) inside luggage room electrical key oscillator (rear of center floor console) console electrical key oscillator A13 A15 A2 (left rear corner of engine compt) Agnd B1 (right front of engine compt) C15 C21 C31 Certification ecu (right side of luggage compt) Cg5b Cg6b Cg7b Cg8b Clg5 Clg6 Clg7 Clg8 Clgb Code Com Computer data lines system D11 Engine hood courtesy switch (front center of engine compt) Engine room j/b 1 (left side of engine compt) Engine room r/b 1 (left side of engine compt) Front controller Gnd Horn (high) (in front of right side of radiator) Horn (low) (in front of left side of radiator) Horn fuse 10a Horn relay Hot at all times Ig2 relay Inds Indw J/c a11 (left side of engine compt) J/c v27 (left front of luggage compt) J/c v30 & y1 J/c y6 (center rear of luggage compt lid) K4 (behind right kick panel) Lin Luggage compartment door lock cylinder Luggage room j/b (left side of luggage compt) Luggage room j/b ecu Mpx1 Mpx2 Pgrd Pnk Power switch Red Right cowl side j/b (behind right end of dash) Ss1 Ss2 Swil Tkul Txct U28 V2 (left side of luggage compt) V30 Vc5 Power Door Locks Wiring Diagram (6 of 6) for Lexus GS 450h 2008 List of elements for Power Door Locks Wiring Diagram (6 of 6) for Lexus GS 450h 2008: 72 (behind right kick panel) k4 (behind right side of dash) right center j/b A10 A11 A12 A54 Accd Am1 Am2 Am2 fuse 7.5a C12 C15 Computer data lines system D11 D15 D19 D22 D23 E13 Efii Efio Gnd Gnd2 H12 Hot at all times Hot w/ ig2 relay energized Hybrid vehicle control ecu (left side of engine compt) I12 Id code box (behind center of dash) Ig1d Ig2 Ig2d Ige Ign fuse 10a Imi Imo Inds Indw Instrument cluster system K1 (behind left kick panel) K2 (under left side of floor console) Left center j/b (behind left side of dash) Left cowl side j/b (behind left end of dash) Lin Lin1 Mpx1 Mpx2 Pnk Power distribution system Power source control ecu (behind right end of dash) Rdy Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Security fuse 7.5a Sgrd Shift lock control ecu (under center console, near selector lever) Sksw Slp Slp1 Slr+ Spd Ssw1 Ssw2 St2 Steering lock ecu (top right side of steering column) Stop lamp switch (on brake pedal bracket) Stop sw fuse 7.5a Stp Str lock fuse 25a Stsw Swil
POWER MIRRORS Electrochromic Mirror Wiring Diagram for Lexus GS 450h 2008 List of elements for Electrochromic Mirror Wiring Diagram for Lexus GS 450h 2008: 33 (behind right kick panel) k4 +b1 +b3 A10 D29 Dome fuse 7.5a E13 Ec+ Ec- Eci+ Eci- Ecu-ig lh fuse 10a Engine room r/b 1 (left side of engine compt) Garage door opener Gnd3 Gnd5 Hot at all times Hot in on or start Ig1 Inner rear view mirror K13 Left center j/b (behind left side of dash) Left center j/b (behind right side of dash) Left cowl side j/b (behind left end of dash) Left front door ecu (in driver's door) Overhead j/b (in overhead console) Pnk Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Right front door ecu (in right front door) Right outer rear view mirror (front of right front door) Z6 left outer rear view mirror (front of left front door) Power Mirrors Wiring Diagram for Lexus GS 450h 2008 List of elements for Power Mirrors Wiring Diagram for Lexus GS 450h 2008: 78 (behind left end of dash) left kick panel j/b (under left side of floor console) k2 A13 A32 A33 A54 Bdr Ca1h Ca1l Canh Canl Certification ecu (right side of luggage compt) Combination meter Computer data lines system Cpub D11 D12 D14 D15 Ec+ Ec- Ecu-b fuse 10a Engine room r/b 1 (left side of engine compt) Gateway ecu (behind right end of dash) Gnd Hot at all times Hssl Hssr Hybrid vehicle control ecu (left side of engine compt) Ig1d J/c a32 & a33 (behind left end of dash) J18 J20 K1 (behind left kick panel) K15 K31 K4 (behind right kick panel) Left center j/b (behind right side of dash) Left cowl side j/b (behind left end of dash) Left front door ecu (in driver's door) Left outer rear view mirror (front of left front door) Left rear door ecu (in left rear door) Left/right Lh fr door fuse 20a Lh-ig fuse 10a Lh-ig relay 1 M10 Mirror heater Mirror position sensor Mpd1 Mpd2 Mpi1 Mpi2 Mpx+ Mpx- Mpx-b fuse 7.5a Mpx1 Mpx2 Outer mirror switch assembly (behind right end of dash) Pnk Power source control ecu (behind right end of dash) Red Retractable mirror motor Rh fr door fuse 20a Rh-ig fuse 7.5a Rh-ig relay 1 Right cowl side j/b (behind right end of dash) Right front door ecu (in right front door) Right outer rear view mirror (front of right front door) Right rear door ecu (in right rear door) Sel1 Sele Sig U1 (under front passenger's seat) Up/down V1 (under driver's seat) Vssl Vssr
POWER SEATS Climate Control Seats Wiring Diagram (1 of 2) for Lexus GS 450h 2008 List of elements for Climate Control Seats Wiring Diagram (1 of 2) for Lexus GS 450h 2008: 49 A/c fuse 7.5a A27 Bllh Blrh Body computer C15 Ctb D11 D20 Fctb G11 G15 Gnd H13 Heater 1 Heater 2 Hot at all times Ill+ Ill- Interior lights system J/c b5 (under left side of driver's seat) J/c b9 (under right side of driver's seat) J30 K1 (behind left kick panel) K2 (under left side of floor console) K4 (behind right kick panel) Left center j/b (behind left side of dash) Left cowl side j/b (behind left end of dash) Left front seat heater (in driver's seat cushion) Lh fr s/htr fuse 15a Lh-ig relay 2 Panel fuse 7.5a Pnk Red Rel1 Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Seat back Seat climate control blower (left front seat back) (in driver's seat back) Seat climate control blower (left front seat cushion) (under driver's seat) Seat cushion Seat heater switch Sign Svs5 Svsg Swl Tail relay Thl V1 (under driver's seat) Climate Control Seats Wiring Diagram (2 of 2) for Lexus GS 450h 2008 List of elements for Climate Control Seats Wiring Diagram (2 of 2) for Lexus GS 450h 2008: 37 A/c amplifier (behind right side of dash) Ctb D12 D13 Gnd Grd Heater 1 Heater 2 Hot at all times Ig1d J/c a5 (under right side of front passenger's seat) J/c a9 (left side of engine compt) K4 (behind right kick panel) K51 Lout Pnk Power source control ecu (behind right end of dash) Red Rh fr s/htr fuse 15a Rh-ig fuse 7.5a Rh-ig relay 1 Right cowl side j/b (behind right end of dash) Right front seat heater (in front passenger's seat cushion) Rout S5-4 Seat back Seat climate control blower (right front seat back) (in front passenger's seat back) Seat climate control blower (right front seat cushion) (under front passenger's seat) Seat cushion Sg-4 Sign Sw 4 Sw 5 Swr Thr U1 (under front passenger's seat) Vsvg Heated Seats Wiring Diagram for Lexus GS 450h 2008 List of elements for Heated Seats Wiring Diagram for Lexus GS 450h 2008: 45 Body computer C15 D11 D12 D13 D20 H13 Heater 1 Heater 2 Hot at all times Ill+ Ill- Interior lights system J/c a5 (under right side of front passenger's seat) J/c a9 (under left side of front passenger's seat) J/c b5 (under left side of driver's seat) J/c b9 (under right side of driver's seat) J30 K2 (under left side of floor console) K4 (behind right kick panel) Left center j/b (behind left side of dash) Left cowl side j/b (behind left end of dash) Left front seat heater (in driver's seat cushion) Lh fr s/htr fuse 15a Lh-ig relay 2 Panel fuse 7.5a Pnk Red Rel1 Rh fr s/htr fuse 15a Rh-ig fuse 7.5a Rh-ig relay 1 Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Right front seat heater (in front passenger's seat cushion) Seat back Seat cushion Seat heater switch Swl Swr Tail relay Thl Thr U1 (under front passenger's seat) V1 (under driver's seat)
POWER TOP/SUNROOF Power Top/Sunroof Wiring Diagram for Lexus GS 450h 2008 List of elements for Power Top/Sunroof Wiring Diagram for Lexus GS 450h 2008: 77 A10 A24 A25 A26 A32 A33 Body ecu C15 Close Cls Combination meter Computer data lines system D11 D15 D22 D29 Dcty Dome fuse 7.5a Down Dwn E10 Engine room r/b 1 (left side of engine compt) G10 G12 Gateway ecu (behind right end of dash) Gauge fuse 7.5a Gnd Hot at all times Hot in on or start Ig+ Ig3 J/c a32 & a33 (behind left end of dash) J/c u22 (right front of luggage compt) J15 K1 (behind left kick panel) K31 K4 (behind right kick panel) K68 K73 Key lock Key unlock Kul Left center j/b (behind right side of dash) Left cowl side j/b (behind left end of dash) Left front door courtesy switch (in left "b" pillar) Left front door ecu (in driver's door) Left front door lock assembly (rear of left front door) Lh ecu-ig fuse 10a Lswe M10 M13 M14 Master ind Mpd1 Mpi2 Mpl2 Mpx Mpx+ Mpx- Mpx-b fuse 7.5a Mpx1 Mpx2 Multi- information display Open Opn Overhead j/b (in overhead console) Pnk Power source control ecu (behind right end of dash) Power window master switch Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) S/roof fuse 25a Slide Sliding roof control ecu (front of overhead console) Sliding roof switch Tilt
POWER WINDOWS Power Windows Wiring Diagram (1 of 2) for Lexus GS 450h 2008 List of elements for Power Windows Wiring Diagram (1 of 2) for Lexus GS 450h 2008: 69 (in left rear door) (right front of luggage compt) j/c u25 (under driver's seat) v1 Ant Asel Auto Bdr Bdrj Certification ecu (right side of luggage compt) Computer data lines system Cpub D11 D13 Data Door control receiver (right rear of luggage compt) Dwn1 Electrical key antenna (base of right "c" pillar) Gateway ecu (behind right end of dash) Gnd Hot at all times J12 J18 J19 J20 K1 (behind left kick panel) Key lock Key un lock Kul Led Left cowl side j/b (behind left end of dash) Left front door ecu (in driver's door) Left front door lock assembly (rear of left front door) Left front power window regulator motor (in left front door) Left rear door ecu (in left rear door) Left rear power window regulator motor Left rear power window switch Lh fr door fuse 20a Lh rr door fuse 20a Lh-ig fuse 10a Lh-ig relay Lin Lin1 Lin2 Lsw Lswe M10 Memory system Mpd1 Mpd2 Mpl1 Mpl2 Mpx1 Mpx2 Pnk Power window master switch Pwe Rco Rda Red Rssi Sel1 Sele Sgnd Sig Sigj U2 (in right "c" pillar) Unlock detection Up1 V1 (under driver's seat) Power Windows Wiring Diagram (2 of 2) for Lexus GS 450h 2008 List of elements for Power Windows Wiring Diagram (2 of 2) for Lexus GS 450h 2008: 47 (behind right end of dash) power source control ecu A32 A33 Auto Bdr Bdrj Computer data lines system Cpub D12 D15 Dwn1 Engine room r/b 1 (left side of engine compt) Gnd Hot at all times Ig1d J/c a32 & a33 (behind left end of dash) J/c u22 & u23 (right front of luggage u23 compt) J13 J19 J20 K4 (behind right kick panel) Led Lin Mpx-b fuse 7.5a Mpx1 Mpx2 Pnk Pwe Red Rh fr door fuse 20a Rh rr door fuse 20a Rh-ig fuse 7.5a Rh-ig relay 1 Right cowl side j/b (behind right end of dash) Right front door ecu (in right front door) Right front power window regulator motor (in right front door) Right front power window switch Right rear door ecu (in right rear door) Right rear power window regulator motor (in right rear door) Right rear power window switch Sel1 Sele Sgnd Sig U1 (under front passenger's seat) U22 Up1 Rear Window Sun Shade Wiring Diagram for Lexus GS 450h 2008 List of elements for Rear Window Sun Shade Wiring Diagram for Lexus GS 450h 2008: 61 +bs A32 A33 A54 C11 C15 C21 C26 C27 C28 C31 Ca1h Ca1l Canh Canl Computer data lines system D15 E84 Ecu-b fuse 10a Ecub Engine room j/b 1 (left side of engine compt) Engine room r/b 1 (left side of engine compt) Gateway ecu (behind right end of dash) Gnd Hot at all times Hot in on or start Hybrid vehicle control ecu (left side of engine compt) J/c a32 & a33 (behind left end of dash) J/c v26 & v27 (left front of luggage compt) J/c v36 (near base of left "c" pillar) J27 K15 K2 (under left side of floor console) Left center j/b (behind right side of dash) Left cowl side j/b (behind left end of dash) Luggage room j/b (left side of luggage compt) Luggage room j/b ecu Mpi1 Mpi2 Mpl1 Mpl2 Mpx-b fuse 10a Mpx1 Mpx2 Outer mirror switch assembly Park/neutral position switch (on transmission) Pgnd Pnk Rear sunshade control switch Rear sunshade relay (under rear parcel shelf) Rev Rr j/b fuse 80a Rr s/shade fuse 7.5a Rr s/shade relay Rr+b Rr-b fuse 10a Rr-ig1 fuse 10a Rss V2 (left side of luggage compt) V26 V27
RADIO Radio Wiring Diagram, with Mark Levinson (1 of 2) for Lexus GS 450h 2008 List of elements for Radio Wiring Diagram, with Mark Levinson (1 of 2) for Lexus GS 450h 2008: 87 (right side of luggage compt) u3 +b2 +tw -tw A25 A32 Acc Acc fuse 7.5a Center speaker Ctr+ Ctr- D23 D27 Dvd Engine room r/b 1 (left side of engine compt) Fl+ Fl- Fr+ Fr- Gauge fuse 7.5a Gnd Gnd2 Hot at all times Hot in on or acc Hot in on or start Ii1+ Ii1- J/c a32 & a33 (behind left end of dash) a33 J/c u22 & u23 (right front of luggage compt) Left center j/b (behind left side of dash) Left front door speaker Left front tweeter Left rear door speaker Left rear speaker Left rear tweeter Mayday ecu (w/ mayday system) (right front of luggage compt) Mpx-b fuse 7.5a Mute Nca Pnk Rad 1 fuse 30a Rad 2 fuse 30a Red Right cowl side j/b (behind right end of dash) Right front door speaker Right front tweeter Right rear door speaker Right rear speaker Right rear tweeter Rl+ Rl- Rr+ Rr- Sl+ Sl- Sld Spd Speaker (woofer) Spi+ Spi- Spo+ Spo- Sr+ Sr- Stereo component amplifier (right rear corner of luggage compt) Tmut Twl+ Twl- Twr+ Twr- Tx+ Tx- U22 U23 U29 U30 U31 U45 W/ mayday system W/o mayday system Wf1+ Wf2+ Wfl+ Wfl- Wfr+ Wfr- Z15 Radio Wiring Diagram, with Mark Levinson (2 of 2) for Lexus GS 450h 2008 List of elements for Radio Wiring Diagram, with Mark Levinson (2 of 2) for Lexus GS 450h 2008: 86 (left rear of engine compt) skid control ecu A13 A24 Acc Al+ Al- Ant Antenna Antenna amplifier (under center of dash) Ar+ Ar- Atx+ Atx- Au1 Au2 C15 Cdl+ Cdl- Cdr+ Cdr- Cmp+ Cmp- Combination meter Computer data lines system Csld D11 Disp Dvd Eau Gateway ecu (behind right end of dash) Gnd Gtx+ Gtx- Hot at all times Ill+ Ill- Interior lights system Ivo+ Ivo- J15 K3 (under right side of floor console) K31 K4 (behind right kick panel) K46 K47 K53 K54 K56 Left center j/b (behind left side of dash) Left cowl side j/b (behind left end of dash) M14 M15 Mode Mpi1 Mpi2 Multi- information display Multi-display Mute Nca Ntsc Option connector (audio system) (right rear corner of luggage compt) Pnk Rad 3 fuse 10a Radio receiver assembly Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Seek+ Seek- Sld Sp1 Spiral cable (in steering column) Sw1 Sw2 Swg Tx+ Tx- Txm+ Txm- Vol+ Vol- Vv+ Vv- Z14 Z16 Z17 Radio Wiring Diagram, without Mark Levinson (1 of 2) for Lexus GS 450h 2008 List of elements for Radio Wiring Diagram, without Mark Levinson (1 of 2) for Lexus GS 450h 2008: 80 +b2 +tw -tw A25 A32 Acc Acc fuse 7.5a Center speaker Ctr+ Ctr- D23 D27 Engine room r/b 1 (left side of engine compt) Fl+ Fl- Fr+ Fr- Gauge fuse 7.5a Gnd Gnd2 Hot at all times Hot in on or acc Hot in on or start Ii1+ Ii1- J/c a32 & a33 (behind left end of dash) a33 J/c u22 & u23 (right front of luggage compt) Left center j/b (behind left side of dash) Left cowl side j/b (behind left end of dash) Left front door speaker Left front tweeter Left rear door speaker Left rear tweeter Mayday ecu (w/ mayday system) (right front of luggage compt) Mpx-b fuse 7.5a Mute Nca Pnk Rad 1 fuse 30a Rad 2 fuse 30a Rad 3 fuse 10a Red Right cowl side j/b (behind right end of dash) Right front door speaker (w/ lexus link system) Right front tweeter Right rear door speaker Right rear tweeter Rl+ Rl- Rr+ Rr- Sld Spd Speaker (woofer) Spi+ Spi- Spo+ Spo- Stereo component amplifier (right rear corner of luggage compt) Tmut Twl+ Twl- Twr+ Twr- Tx+ Tx- U22 U23 U29 U3 (right side of luggage compt) U30 U42 U44 U45 W/ mayday system W/o mayday system Wf1+ Wf1- Wf2+ Wf2- Radio Wiring Diagram, without Mark Levinson (2 of 2) for Lexus GS 450h 2008 List of elements for Radio Wiring Diagram, without Mark Levinson (2 of 2) for Lexus GS 450h 2008: 81 (left rear of engine compt) skid control ecu A13 A24 Acc Al+ Al- Ant Antenna Antenna amplifier (under center of dash) Ar+ Ar- Atx+ Atx- Au1 Au2 C15 Cdl+ Cdl- Cdr+ Cdr- Cmp+ Cmp- Combination meter Computer data lines system Csld D11 Disp Eau Gateway ecu (behind right end of dash) Gnd Gtx+ Gtx- Ill+ Ill- Interior lights system Ivo+ Ivo- J15 K3 (under right side of floor console) K31 K4 (behind right kick panel) K46 K47 K53 K54 K56 Left center j/b (behind left side of dash) M14 M15 Mode Mpi1 Mpi2 Multi- information display Multi-display Mute Nca Ntsc Option connector (audio system) (right rear corner of luggage compt) Pnk Radio receiver assembly Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Seek+ Seek- Sld Sp1 Spiral cable (in steering column) Sw1 Sw2 Swg Tx+ Tx- Txm+ Txm- Vol+ Vol- Vv+ Vv- Z16 Z17
SHIFT INTERLOCK Shift Interlock Wiring Diagram for Lexus GS 450h 2008 List of elements for Shift Interlock Wiring Diagram for Lexus GS 450h 2008: 29 (on brake pedal bracket) stop lamp switch +bs A54 B15 C15 Canh Canl Computer data lines system D11 D14 D23 E84 Ecu-ig rh fuse 10a Hot at all times Hot in on or start Hybrid vehicle control ecu (left side of enginecompt) K4 (behind right kick panel) Left center j/b (behind right side of dash) Mpx2 P position detection switch Park/neutral position switch (on transmission) Pnk Power source control ecu (behind right end of dash) Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Shift lock control ecu (under center console, near selector lever) Shift lock solenoid Stop sw fuse 7.5a Steering Column Wiring Diagram for Lexus GS 450h 2008 List of elements for Steering Column Wiring Diagram for Lexus GS 450h 2008: 30 A10 A12 Computer data lines system D19 D27 E13 Gnd H12 Hot at all times Hot in on or start I12 Ig2 Ige Ign fuse 10a K1 (behind left kick panel) K2 (under left side of floor console) Left center j/b (behind right side of dash) Lin Lin1 Mpx2 Pnk Power source control ecu (behind right end of dash) Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Sgnd Slp Slp1 Slr+ Steering lock ecu (top right side of steering column) Str lock fuse 25a
SUPPLEMENTAL RESTRAINTS Pre-Collision Wiring Diagram for Lexus GS 450h 2008 List of elements for Pre-Collision Wiring Diagram for Lexus GS 450h 2008: 23 C30 C33 Canh Canl Computer data lines system Hot at all times Hot in on or start Ig1 Junction connector v26 (left front of luggage compt) Left front seat outer belt motor (at base of left "b" pillar) Luggage room j/b (left side of luggage compt) Mol+ Mol- Mor+ Mor- Pgnd Psb fuse 30a Right front seat outer belt motor (at base of right "b" pillar) Rr-ig 1 fuse 10a Seat belt control ecu (left side of luggage compt) V2 (left side of luggage compt) V42 V43 Supplemental Restraint Wiring Diagram (1 of 3) for Lexus GS 450h 2008 List of elements for Supplemental Restraint Wiring Diagram (1 of 3) for Lexus GS 450h 2008: 77 (behind left end of dash) left kick panel j/b (behind left kick panel) k1 (behind right end of dash) right kick panel j/b (behind right side of dash) right center j/b (left side of engine compt) hybrid vehicle control ecu (right front of luggage compt) (if equipped) mayday ecu (under left side of floor console) k2 +sl +sr -sl -sr A22 A23 A25 A26 A27 A54 B11 Body ecu C11 Center air bag sensor assembly (under center floor console) Computer data lines system D2+ D2- Dk+ Dk- Escl Esl Front seat inner belt (driver`s side) (under driver's seat) Gauge fuse 7.5a Gsw Gsw2 Gsw3 Hot in on or start Icl+ Icl- Ig2 Ign fuse 10a J27 K44 K68 Lbe+ Lbe- Left curtain shield air bag squib (near top of left ``b" pillar) Left front pretensioner (at base of left ``b" pillar) Left front side air bag squib (under left side of left front seat) Left rear air bag sensor (under left rear seat) Left rear pretensioner (at left ``c" pillar) Left rear side air bag squib (left side of left rear seat) Left side air bag sensor (near base of left ``b" pillar) Lsp+ Lsp- Mpx1 Mpx2 P-ab P2+ P2- Paon Pk+ Pk- Pl+ Pl- Plr+ Plr- Red Right kick panel j/b (behind right end of dash) Rl+ Rl- Seat position air bag sensor Sfl+ Sfl- Sil Switch buckle U45 V16 Vucl Vupl Supplemental Restraint Wiring Diagram (2 of 3) for Lexus GS 450h 2008 List of elements for Supplemental Restraint Wiring Diagram (2 of 3) for Lexus GS 450h 2008: 32 (at right front corner of engine compartment) right front air bag sensor (behind right side of dash) air bag squib (front passenger's air bag assembly) (center of steering wheel) air bag squib (steering wheel pad) (left front corner of engine compartment) left front air bag sensor (under left side of dash) air bag squib (driver's side knee air bag) (under right side of dash) air bag squib (front passenger's side knee air bag) +sl +sr -sl -sr A21 Air Aron Buckle switch D17 Detection sensor occupant Escr Esr Front seat inner belt (front passenger`s side) (under front passenger's seat) Left kick panel j/b (behind left end of dash) Multi-display Red Right curtain shield air bag squib (near top of right ``b" pillar) Right front pretensioner (at base of right ``b" pillar) Right front side air bag squib (under right side of right front seat) Right rear air bag sensor (under right rear seat) Right rear pretensioner (at right ``c" pillar) Right rear side air bag squib (right side of right rear seat) Right side air bag sensor (near base of right ``b" pillar) Spiral cable Vucr Vupr Supplemental Restraint Wiring Diagram (3 of 3) for Lexus GS 450h 2008 List of elements for Supplemental Restraint Wiring Diagram (3 of 3) for Lexus GS 450h 2008: 58 (under front passenger's seat) (late production) occupant classification ecu (under front passenger's seat) front seat inner belt (front passenger's side) (under front passenger's seat) occupant classification sensor (under right side of front passenger's seat) seat belt tension sensor +ig A10 Bgnd Bsw Center air bag sensor assembly (under center floor console) Combination meter Computer data lines system Dia E13 Escr Esr Fsr+ Fsr- Gbt Gnd Gps H12 Icr+ Icr- J15 Junction connector a5 Junction connector a9 K12 K2 (under left side of floor console) K31 Left center j/b (behind right side of dash) Mpx+ Mpx- Pnk Pr+ Pr- Prr+ Prr- Rbe+ Rbe- Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Rr+ Rr- Sfr+ Sfr- Srs ind Telltale lamp assembly U1 (under front passenger's seat) U13 Vbt Vps Vucr Vupr W/ memory W/ occupant classification system W/o memory W/o occupant classification system
TRANSMISSION Transmission Wiring Diagram (1 of 3) for Lexus GS 450h 2008 List of elements for Transmission Wiring Diagram (1 of 3) for Lexus GS 450h 2008: 72 (behind center of dash) id code box (left front of engine compt) water pump motor (inverter) A10 A25 A54 Accelerator position sensor (under left side of dash) Batt Can+ Canh Clk+ Clk- Computer data lines system D13 E1 (left rear of engine) E10 E13 Efio Engine control module (left side of engine a53 compt) Engine controls system Engine room j/b 1 (left side of engine compt) Engine room r/b 1 (left side of engine compt) Ep1 Ep2 G13 Gauge fuse 7.5a Gnd Go2 Hot at all times Hot in on or start Hsdn Htm+ Htm- Hybrid vehicle control ecu (left side of engine compt) Igct 1 fuse 20a Igct 2 fuse 7.5a Igct main relay Ign fuse 10a Igsw Ilki Imi J/c a10 & a11 (left side of engine a11 compt) J/c a10 (left side of engine compt) J/c a50 (left side of engine compt) J/c a8 & e10 (left side of engine compt) J/c a9 (under left side of front passenger's Left center j/b (behind left side of dash) Mrel Mth+ Mth- Nca Pmet Red Req+ Req- Rh-ig fuse 7.5a Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Seat) Sftd Sftu Spdi St1- Stop lamp switch (on brake pedal bracket) Stop sw fuse 7.5a Stp Transmission control switch Vap2 Vcp1 Vcp2 Vpa Vpa1 Vpa2 Transmission Wiring Diagram (2 of 3) for Lexus GS 450h 2008 List of elements for Transmission Wiring Diagram (2 of 3) for Lexus GS 450h 2008: 86 (rear of engine compt) front motor generator 1 (right rear corner of engine compt) inverter +br1 +br2 A10 A13 A15 A2 (left rear corner of engine compt) A24 A60 Acpb Acpe C15 Canh Canl Cbi Cei Clk+ Clk- Combination meter Compressor motor (left front of engine) Computer data lines system D11 Drn1 Drn9 Drnb Drnc Drnd Drne E13 Efi F15 Front motor generator 2 (rear of engine compt) Gcs Gcsg Gmt Gmtg Gnd1 Gnd2 Grf Grfg Gsn Gsng Hsdn Htm+ Htm- Hybrid pwr ind Hybrid snow ind Ig+ Ilk Ind master Ind ready Inverter J15 K2 (under left side of floor console) K31 K4 (behind right kick panel) Lcd Malfunction ind Mcs Mcsg Mmt Mmtg Modd Mpx+ Mpx- Mrf Mrfg Msn Msng Mth+ Mth- Multi information display Nca Pmti Pnk Power meter Red Req+ Req- Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Skid control ecu (left rear of engine compt) Sp1 Speedometer System main relay (front of luggage compt) Transmission Wiring Diagram (3 of 3) for Lexus GS 450h 2008 List of elements for Transmission Wiring Diagram (3 of 3) for Lexus GS 450h 2008: 47 +bs A26 A32 A33 Body ecu Computer data lines system Dome fuse 7.5a E01 E1 (left rear of engine) E12 E84 Electronically controlled transmission solenoid (in transmission) Engine room r/b 1 (left side of engine compt) Eo2 Gmt Gmtg Hot at all times Hybrid mode select switch Hybrid vehicle control ecu (left side of engine compt) Interior lights system J/c a32 & a33 (behind left end of dash) J/c e10 (left side of engine compt) K68 Mmt Mmtg Mpx-b fuse 7.5a Mpx1 Mpx2 Park/neutral position switch (on transmission) Pb1 Pb2 Pb3 Pnk Pwr Red Right cowl side j/b (behind right end of dash) Sl1+ Sl1- Sl2+ Sl2- Snow Sp2+ Sp2- Thermistor (oil pump) (right rear of engine) Tho Topm Transmission revolution sensor (turbine) (in transmission)
TRUNK, TAILGATE, FUEL DOOR Power Trunk Opener and Closer Wiring Diagram (1 of 2) for Lexus GS 450h 2008 List of elements for Power Trunk Opener and Closer Wiring Diagram (1 of 2) for Lexus GS 450h 2008: 60 (right side of luggage compt) certification ecu A24 A25 A26 A30 A32 A53 Ant Asel Body ecu C15 Canh Canl Computer data lines system D11 D12 Data Dome fuse 7.5a Door control receiver (right rear of luggage compt) Ecu-b fuse 10a Electrical key antenna (base of right "c" pillar) Engine control module (left side of engine compt) Engine room r/b 1 (left side of engine compt) F13 Fuel Fuel lid opener motor (at left side of luggage compt) Fuel open fuse 10a Fuo Gauge fuse 7.5a Grd Hot at all times Hot in on or start Ig1d J/c a32 & a33 (behind left end a33 of dash) J/c u25 (right front of luggage compt) J16 K2 (under left side of floor console) K4 (behind right kick panel) K68 Left cowl side j/b (behind left end of dash) Lh-ig fuse 10a Lh-ig relay 1 Luggage compartment door opener cancel switch Mpx-b fuse 7.5a Mpx1 Mpx2 Mpx4 Mpxb Pnk Power source control ecu (behind right end of dash) Rco Rda Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Rssi Trk opn fuse 10a Tsw U2 (in right "c" pillar) U28 Power Trunk Opener and Closer Wiring Diagram (2 of 2) for Lexus GS 450h 2008 List of elements for Power Trunk Opener and Closer Wiring Diagram (2 of 2) for Lexus GS 450h 2008: 57 (behind right side of dash) right center j/b A15 Bdcy Body ecu C15 C21 C31 Ccty Cls Combination meter Computer data lines system Cty D11 D15 Fuel lid & luggage compt door opener sw Fusw H14 Ill + Ill - Ind door Ind master Interior lights system J/c v27 (left front of luggage compt) J/c v30 & y1 J/c y6 (center rear of luggage compt lid) J15 K15 K2 (under left side of floor console) K31 K4 (behind right kick panel) K67 Lcls Lcm+ Lcm- Left center j/b (behind left side of dash) Left cowl side j/b (behind left end of dash) Lopn Lpsw Luggage compartment door closer Luggage compartment door lock cylinder Luggage compartment door opener switch Luggage compartment door striker switch (rear center of luggage compt) Luggage door opening switch assembly Luggage room j/b (left side of luggage compt) Luggage room j/b ecu Mpx1 Mpx2 Opn Outer mirror switch assembly Pgnd Pnk Red Right cowl side j/b (behind right end of dash) Telltale lamp assembly Tkul V2 (left side of luggage compt) V30
WARNING SYSTEMS Seat Belt Warning Wiring Diagram for Lexus GS 450h 2008 List of elements for Seat Belt Warning Wiring Diagram for Lexus GS 450h 2008: 69 (under front passenger's seat) (under front passenger's seat) front seat inner belt (front passenger's side) (under left side of floor console) k2 (under right side of front passenger's seat) j/c a5 (w/o occupant A10 A24 A25 A27 A32 A33 Air bag sensor assembly center (under center floor console) Bgnd Bsw Buckle switch Classification system) Combination meter Computer data lines system E13 E14 Engine room r/b 1 (left side of engine compt) F14 Front seat inner belt (driver's side) (under driver's seat) Front seat inner belt (front passenger's side) Fsr+ Fsr- Gauge fuse 7.5a Gnd Gps H12 Hot at all times Hot in on or start Ign fuse 10a J/c a32 & a33 (behind left end of dash) J/c a9 (under left side of front passenger's seat) J15 K12 K31 K44 K46 Lbe+ Lbe- Left center j/b (behind left side of dash) Mpx-b fuse 7.5a Mpx1 Mpx2 Multi- display Multi- information display Occupant classification ecu (if equipped) (under front passenger's seat) Occupant classification sensor Occupant detection sensor Passenger seat belt warning lamp Pbew Pnk Rbe+ Rbe- Red Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Seat belt ind Telltale lamp assembly U1 (under front passenger's seat) U13 V16 Vps W/ memory W/ occupant classification system W/o memory W/o occupant classification system Tire Pressure Monitoring Wiring Diagram for Lexus GS 450h 2008 List of elements for Tire Pressure Monitoring Wiring Diagram for Lexus GS 450h 2008: 45 (behind center of dash) tire pressure warning ecu +5v A10 A24 A25 A32 A33 Clsw Combination meter Computer data lines system D14 Dome fuse 7.5a E13 Engine room r/b 1 (left side of engine compt) Gauge fuse 7.5a Gnd Gnd2 H11 H12 H15 Hot at all times Hot in on or start Idsw Information display J/c a32 & a33 (behind left end of dash) J15 K31 K4 (behind right kick panel) Master ind Mpx-b fuse 7.5a Mpx1 Mpx2 Multi- Pnk Rda Red Rf5v Rh ecu-ig fuse 10a Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) Set Tire pressure ind Tire pressure warning antenna & receiver (center of roof) Tire pressure warning reset switch Tire pressure warning select switch
WIPER/WASHER Front Wiper/Washer Wiring Diagram for Lexus GS 450h 2008 List of elements for Front Wiper/Washer Wiring Diagram for Lexus GS 450h 2008: 70 (left rear corner of engine compt) j/c a17 A24 A25 A30 A32 A33 Auto Body ecu C15 Combination meter Computer data lines system D11 D12 D14 Engine room j/b 1 (left side of engine compt) Engine room r/b 1 (left side of engine compt) Fr wip fuse 30a Front controller G11 G12 Gauge fuse 7.5a Gnd Gnd2 Head Headlamp washer circuit Headlights system Hot at all times Hot w/ ig relay 2 energized Hot w/ lh-ig relay 1 energized Ig1d Ig2 J/c a17 (left rear corner of engine compt) J/c a32 & a33 (behind left end of dash) J14 J15 K1 (behind left kick panel) K22 K31 K4 (behind right kick panel) Left center j/b (behind left side of dash) Left cowl side j/b (behind left end of dash) Lh ecu-ig fuse 10a Lh-ig relay Mist Mpx Mpx-b fuse 7.5a Mpx1 Mpx2 Mpx4 Off Overhead j/b (in overhead console) Pnk Power source control ecu (behind right end of dash) Rain sensor (front center of roof) Red Rh ecu-ig fuse 10a Rh-ig relay 1 Right center j/b (behind right side of dash) Right cowl side j/b (behind right end of dash) S/m S/s Sig Wash relay Washer fuse 20a Washer switch Wig Windshield washer motor (left front corner of engine compt) Windshield wiper motor (left rear of engine compt) Windshield wiper switch assembly Wiper switch Headlamp Washer Wiring Diagram for Lexus GS 450h 2008 List of elements for Headlamp Washer Wiring Diagram for Lexus GS 450h 2008: 51 A32 A33 A39 Auto Body ecu Computer data lines system D11 D12 D15 Ecu-b fuse 10a Engine room j/b 1 (left side of engine compt) Engine room r/b 1 (left side of engine compt) Front controller Frwa H-lp cln fuse 30a Hdlo Head Headlamp cleaner control relay (below left headlight) Headlamp cleaner motor (below left headlight) Headlamp cleaner switch Headlamp dimmer switch assembly Hot at all times Hrly Ig1d J/c a10 (left side of engine compt) J/c a17 (left rear corner of engine compt) J/c a32 & a33 (behind left end of dash) K1 (behind left kick panel) K15 K2 (under left side of floor console) K22 K67 Left center j/b (behind left side of dash) Left cowl side j/b (behind left end of dash) Lh-ig fuse 10a Lh-ig relay Light control switch Mpx1 Mpx2 Off Outer mirror switch assembly Pnk Power source control ecu (behind right end of dash) Red Right cowl side j/b (behind right end of dash) Tail Wash relay Washer fuse 20a Washer switch Windshield wiper switch assembly Wiper/ washer circuit
