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1 GX 470250A AM12003 LEXUS GX 470 24 IG6 IDW–G122122532122W3W–G7. 5AACC5 ID9 IEBDR112ACC22BECU4 IB114 IL3 ALMRY4B 3(A), B 4(B), B 5(C)Body ECUDOMERelay21221 IP3R5322PSHORT PINBW–R30A AM2L–W50A R–Y1W–R140AALT221ST2IG2 6IG1 4ACC 3R–L2210AECU–B NO. 212I18Ignition SW7 AM22 AM17. 5A GAUGE1222PW–L2M u ltip lex C o mm u nic ation S y ste mL–Y21P o w e r S o urc eIGDKJHFECBA(Cont. next page)OVERALL ELECTRICAL WIRING DIAGRAM (From April 2003)RL–YW–RW–RG–WHEAD RelayR–BR–BG–W25A DR/LCKL–B20A D FR P/WR10A DOMERW–R10A ECU–BW–L
�YL–RR–LRPW–RFHGEDCB10 3CRMoon Roof Control ECUand Motor 21–1 R–WR20 3ARR–YR10 3BR10 3A10 3ER–L1B1 ID2R–LB6Back DoorCourtesy SWR–LI17Ignition Key Cylinder Light6R2R–G9 IK8 1DR–L17 IB3R–L8 1CPANEL Fuse 8–4 RG8 1EPDPU1 A28 ATAILBCTY7 B89 AA(Cont. next page)OVERALL ELECTRICAL WIRING DIAGRAM (From April 2003)22W118 IAW22 IJ7V4Vanity Light LH19 IAWW1V5Vanity Light RHW3 IEWR25Rear Interior Light10 IA216 IAB 3(A), B 4(B), B 5(C)Body ECU2DOOR1W–BAW–BR–Y1 IA16 IEL–YMoon Roof Control ECUand Motor 21–2 LTOWING TAIL Relay 9–3 10 IK20A P FR P/WL–RG–YG2003 LEXUS GX 470 (EWD519U)KJHIGR–LR–YFECBADPTaillight andIlluminationSystem 8–2 RL–WL–YL–WW–R1 IC1512 IK20A P RR P/WTAILRelay23TRLY181 GX 470 (Cont’ d)514 IK20A D RR P/WLeft Kick Panel1WIHW237 IA2 IH16OFFONJ11JunctionConnectorDOORW4GND1 GND2PWSW6 IEW9 IAI24Interior LightW8 IA13ILE3OFFONWW216R–L7RR–G4 IA412 IAM u ltip lex C o mm u nic ation S y ste mM13Personal LightW–B
1 GX 470 (Cont’ d)(Cont. next page)M u ltip lex C o mm u nic ation S y ste m9121110B 3(A), B 4(B), B 5(C)Body ECURCYL22 BLCYL21 BPCYL25 ADCYL26 AW–GW–G5 IH1YY7 IH1R–LWA2 ID2BRBD15 BRBD21LSPT17 A2RSPT16 AW1 BR–LR–L2R–LR–L101S25Side Step Light LHW5S26Side Step Light RHM13Moon Roof Control SWPersonal LightR–W18 ACSPTS27(A), S28(B)Sub Body ECUILEW23 ASGBECU4 AW–RB–RW–BA17 IR3A7 ID2A9 ID2RRW–GBBJ31JunctionConnectorBRW–BRheostat 8–11 RSIG3 AA3 ID2RR25 AW–BW–GG–WR–WRRRRGND24 A1R–WNR–WM2RLFR–WKR–WIJBHG–WG1S13Step Light LHRF2R1 IC1REFF9 IF1RRRDCA4 ID2RCPRRBORRFR1 IQ2ACG–WC8 IF19 IC2G–WJ28JunctionConnectorCG–WC BJ29JunctionConnectorCG–WA RR5 BC1RCARR11 BC16 BA1S14Step Light RHBA5 BD11RRBRRRR1 BB111 BD129 IQ1J18JunctionConnector2R–WY1I20Inside HandleIllumination Front LHG–W15 BA17 IC1D8Door Courtesy LightFront LH22BRY11I21Inside HandleIllumination Front RHR–W22 BB17 IQ2D9Door Courtesy LightFront RH1R–WW–G212 BC1I22Inside HandleIllumination Rear LH1W–GG–W210 BC1D10Door Courtesy LightRear LHW–G212 BD1I23Inside HandleIllumination Rear RHD11Door Courtesy LightRear RH2003 LEXUS GX 470 (EWD519U)1G–WW–G10 BD1A8 ID2A16 BWWCDEFGHIJKLMNW–BABBPJ32JunctionConnectorLeft QuarterPanel InnerM
2003 LEXUS GX 470 �RR–LRPW–RP4 ID1RM 1R29Rear WiperMotorBack Door PanelCenter1 �BR–BPL–OBLIJA14 IP31IR2Near the Right Side ofSteering ColumnJ14JunctionConnectorL–OC15Combination SWPBQ2–4RCR–B12 ID119 AR6 ID15 AWRINWRLO3ONWashC1R 1R WR EWPB–RW–R4 BWRSWRWLMRWSM4 BH18 BH1INTOFFWash153M4PBA2 AWL–B1 AL–R14 AL–B6 BMPX–S27(A), S28(B)Sub Body ECUL–B5 ID1L–R13 ID17 IR2B 3(A), B 4(B), B 5(C)Body ECU5 IR214L–BL–R2 B13M u ltip lex C o mm u nic ation S y ste mL–RMPX 1 GX 470 (Cont’ IFEDCBA(Cont. next page)M OVERALL ELECTRICAL WIRING DIAGRAMP–GPR–BPRear Washer SWRear Wiper SW
1 GX 470 (Cont’ d)(Cont. next page)M u ltip lex C o mm u nic ation S y ste m17201918B 3(A), B 4(B), B 5(C)Body ECU28 IJ8 IF8 IB7 IB32R–WA AJ 4(A)JunctionConnector2A AAAR–W1C BA AA AJ 4(A), J 5(B)JunctionConnectorQR–WR–GOPH2Headlight High RHN1R–GM12W–BLH4Headlight Low RHJS12W–BIKRR–YH2WGH3Headlight Low LHW–RE BR–YC AJ 4(A)JunctionConnectorB AE AA11 IB4R–WR–GR–YB–RF2R–LA BJ 7(A), J 8(B)JunctionConnectorW–BW–R1 ID1J 7(A), J 8(B)JunctionConnectorEB ABAR–YA BH1Headlight High OC225W–BJ31JunctionConnector2003 LEXUS GX 470 (EWD519U)P–G B110A HEAD(HI RH)7 IK110A HEAD(HI LH)11 IF110A HEAD(LO RH)3 ILP–GB210A HEAD(LO LH)2 ICR–BR–BW13 IBPRGE1A23RDABHR20 C1R–GW–BD7Door ControlReceiver21710A ECU–IGG–OA16 ID210A IG1 NO. 2L–RA15 ID2HRLYSIG1015A RR WIPPRG3 B15A RR WSHRDA4 �BW–BABCDEFGHIJKLMNOPQWW–BALeft Quarter Panel InnerFront Left nt Right FenderM
2003 LEXUS GX 470 (EWD519U)QPNLJOMKIGRheostat 8–10 HW–BG–YGL–BFront Fog Light SW 12–1 Dimmer SWFA17Automatic LightControl Sensor3G–WCLTELightControl LTBFlashHighLowAutoHeadTailOFFAR–W12G–O58 II1A3 C17HL14TW–BW–BTurn Signal Flasher 10–4 1IP5ELS115 A18 IH1CCJ12JunctionConnectorC8 IB4CNear the Right Side ofSteering ColumnJ14JunctionConnectorW–BR–W7HF HU8C14Combination SWIJA16EL2 IH1H13HF7 C1 IH1TAIL8 CHEAD1 CR–GEG–RGR–GCLG–BEngine ControlModule 5–12 DYII1G–YR–WCLTS7CLTE21 CY–G9 II1CLTB6 C23RL–R5HORN18 1A25IND6 IB33 B2T5Theft Deterrent ont. next page)8 1B 8 1AHORN Relay 25–2 BCLTS4 CB 3(A), B 4(B), B 5(C)Body ECUGV–WR–GDRL7 A22R–WG–RA21M u ltip lex C o mm u nic ation S y ste mL–RPR–W18 CTC1 GX 470 (Cont’ d)M OVERALL ELECTRICAL WIRING DIAGRAMPV–WV–WTransponder KeyComputer 5–20 R–G
1 GX 470 (Cont’ d)(Cont. next page)M u ltip lex C o mm u nic ation S y ste m25282726B 3(A), B 4(B), B 5(C)Body ECUMPX3MPX2KSW14 C26 C23 ABIGB18MPX122A28Airbag SensorAssemblyMPX2M8Mayday ECUW4Wiper RelayD AMPX2MPX124BJ36(A), J37(B)JunctionConnectorMPX225BB1D BMPX1B4 IN1B1WWK3UnlockWarning SWR10Remote ControlMirror ECUTransponder Key Computer 5–20 26 1BMPX1BG–YG–Y56 1DBG–YBA1 ID2A13 ID2W–B4BW–BQRE3Engine HoodCourtesy SWOPMPX16 1C2R–WN14 1AW–RM13 1AW–RK12 1A 3 1BW–RJL16 1AMPX2133 1AB–RI14A15 IB41B–RG6 2AG–YW–RT1Theft DeterrentHornFHR–WW–RL–O2003 LEXUS GX 470 (EWD519U)DE6 2B6 1AKSW12BV–WC31J13JunctionConnector1 1BBMPX134B11 1AADSWHB–RW–RW–B16 IP31 B1213 IH1P20Power Seat ECU1016 2AT6Tilt andTelescopic ECU1BSH–6 2EBE29G–YG–YT5Theft Deterrent W–BAGIHJ11JunctionConnectorLeft Kick PanelM
2003 LEXUS GX 470 CCB–YBBB–YP11Power Window Motor Front RHU2DN1PLS53PLS1BPLS234PLS2B68EB–YSGNDKOF2 �LW–BB–YB–YGR–LR–YW–BR–Y1 ��YIBR–BP10Power Window Motor Front LH3W–BPLS25 IQ1B12 S1LGL–BDVCC19L–BA1 IB41DW–RU211KLP7Power Window Control SW Front RHW–GFL1 IC2WL–B2 IC2B–W5 OMLKIHGEDCBA(Cont. next page)GCBLV–WLAL7B2011 IC1MPX411 AB9D18Power Window Master SWMPX124 AB 3(A), B 4(B), B 5(C)Body ECUW–LMPX2813 IC1L30GA14 ID229M u ltip lex C o mm u nic ation S y ste mBCPUB1 GX 470 (Cont’ d)M OVERALL ELECTRICAL WIRING DIAGRAM
1 GX 470 (Cont’ d)(Cont. next page)M u ltip lex C o mm u nic ation S y ste m33363534B 3(A), B 4(B), B 5(C)Body ECUMPX5MPX614 BBCUL119155 IK1 IKBBAL116 BW–LW–LGGLLP9Power Window Control SW Rear RH5 17W–B5PLS8 BD1GNDW–B3B–YSSRBKOF11W4D8BR–B2W–G1W–R9 BD1SGNDD19Door LockControl SWRH2B–YW–BP13Power Window Motor Rear G–YBP12Power Window Motor Rear LHD7 BD1UP6GE6 IH1BDR12B6B8 WD8BR–B2UW–G1W–RL–B9 BC1SGNDC6 IQ2LDN1L7 BC1UP6G–Y4 IH1BDR12BB2003 LEXUS GX 470 (EWD519U)RX2BL–OL–WP8Power Window Control SW Rear –BMNOPMG–YGRW–BRW–BNOM
2003 LEXUS GX 470 GBQW–BW–BIHW–BW–BBack Door Panel CenterB7Back Door Key Lock andUnlock SWBack Door Lock MotorBack Door UnlockDetection SWLeft Kick PanelW–BELUL5B3BC1J28Junction Connector6LW–BW–BW–B10 ILE44IQ1D20Door Lock MotorRear LHDoor UnlockDetection SWRear LHUL916LSSRLAILA3 BD1W–BE4LGBRight Kick �GR–WV–WD21Door Lock MotorRear RHDoor UnlockDetection SWRear RHUL916LSSR15 BD114 BD113 BD115 ABBB8422 IL14 BC1W–BNMR–LEULD17Door Key Lock and Unlock SWFront RHDoor Lock Motor Front RHDoor Unlock Detection SWFront RHLB–O817LSSR15 IK13 L1LGW–BE411 –WW–L7D16Door Key Lock andUnlock SW Front LHDoor Lock MotorFront LHDoor Unlock DetectionSW Front R–B4B–WULL–R1B–W823 ILWLSSR6 IQ116 ILL–B16 BH1L–O7 IQ1L–RR–B2 IQ2L–B13 BH1L–Y1 BH16 ILW7 BH16 IR112 IR118 IL5LSRL–BUL1016 IKACT–24W–BL–R3 IQ2L–RC24 ILW7 IR1L–R6 IC212 ILL–B7 IC2L–R9 ILACT 2340L–RWC5 IR3CLSWP30 A39WL–B4 IQ2DC3 IKACTD10 AB 3(A), B 4(B), B 5(C)Body ECUWDDL22038L–BL–RELGW–L37M u ltip lex C o mm u nic ation S y ste mHFEDCA(Cont. next page)L–RDCBAUL222 A1 GX 470 (Cont’ d)M OVERALL ELECTRICAL WIRING DIAGRAMW–BW–BGW–B
1 GX 470 (Cont’ d)(Cont. next page)M u ltip lex C o mm u nic ation S y ste m41444342B 3(A), B 4(B), B 5(C)Body ECUACTY20 BBZRBZR297M2PCTY24 BRLCY11 BRRCY12 BDRLP12 CDCY211 CL–BV–YP–L2 IC1P–BR–YR–Y3 IC1DCTY23 BL–W4 IC18 AL–B6 IBMM2 AL–OR–G10 IBM120 AKSWO15 CLG–BL–B4 BA1B2 BA13 IH1BV–Y1 IR1CP–L11Transponder KeyComputer 5–20 D15Door Courtesy SWRear RH1D14Door Courtesy SWRear LHSETP–B2W–BD22Driving PositionMemory SWV–W1D13Door Courtesy SWFront RH1E1R–YMRYD12Door Courtesy SWFront LHM2R–Y2M1R–Y4C5 ID2BL–W3L–BL–O2BJ16JunctionConnectorL3 BA1L–YL–RWLR–GR–WDEF1 �LHIR–LW–BRHGW–B2003 LEXUS GX 470 (EWD519U)W3WirelessDoor Lock BuzzerSuspension ControlECU 16–7 1AJRM
2003 LEXUS GX 470 (EWD519U)GR–LRG–OBREGRear Bank ofLeft CylinderHeadRight QuarterPanel InnerB13Buckle SW RHOccupant Detection SensorW–BW–BF8Front Passenger’ sSeat Belt Warning LightW–BBMW–BBRW–BRight KickPanelJ23JunctionConnectorUnder theDriver’ s SeatB12Buckle SWLHILA1BRJGR–L3W–LIHead3GR–BC 9(A), C10(B), C11(C), C12(D)Combination MeterW–BData Link Connector3 5–7 R–Y2D3DR–Y4Illuminations 8–12 H12AR–L3ACAN5 CG–ROBD217 CL14 AGenerator 4–3 G19AR–W221 IH1DEFO27 AGRHigh Beam4BP17 BHAZ8SPD14Combination Meter 37–3 F5BBRR–G4 IP3J17JunctionConnectorPKB2 B48Turn Signal Flasher 10–3 ESecurityW–L20BA11 ID2EEGR–B8 IR1EGR–B7 IO1GR–BDBKL13 A47G–RV–WRB 3(A), B 4(B), B 5(C)Body BGR–B17C11CLG–B45M u ltip le x C o m mu nic ation S y s temG–BBA1 GX 470 (Cont’ d)M OVERALL ELECTRICAL WIRING DIAGRAMDEFOG Fuse 24–2 Park/Neutral Position SW 6–12 Parking Brake SW 15–7 R
2 GX 470P o w er S ou rc eS tarting1432ACCAM1IG17 AM2IG2ST2 8G–BJ26JunctionConnectorW–RI18Ignition SWW–RB–Y257. 5AST2DDB–YW–R214 IP52 IK11 IO1STA RelayL–YB–YB–YB–YB–Y31C2C6 k/NeutralPosition SW2Y2003 LEXUS GX 470 (EWD519U)2D3 ID30AAM2W–B11 BAEngine ControlModule 5–12 5–14 BB–RL–YB ACombination Meter 37–5 Y–G2B BJ 2(A), J 3(B)Junction Connector6 EB11BatteryS 1(A), S 2(B)StarterEBFront LeftFenderM
M OVERALL ELECTRICAL WIRING DIAGRAMEEW–BRear Bank ofRight CylinderHeadW–BI8Ignition Coil andIgniter No. 82R–W44W–B3G–B1B–RW–BI7Ignition Coil andIgniter No. 72R–Y4W–BW–BI6Ignition Coil andIgniter No. 6B–R2R–Y4W–B3L–B1B–RR–WW–BI3Ignition Coil andIgniter No. 33G–O1B–RW–BI2Ignition Coil andIgniter No. 2B–RR–W2R–W4W–B3L–Y1B–RFront on SWEF1W–B2B–RST2N2Noise FilterNo. 230AAM22EDW–B1B–RBatteryB12W–R2IG2 67 AM21N1Noise FilterNo. 123 GX 470P ow e r S o urc eB–RRear Bank ofLeft CylinderHead1B–RBB–RB–RI1Ignition Coiland Igniter No. 12003 LEXUS GX 470 (EWD519U)Rear Bank ofRight CylinderHead13 IO1B–R2R–W4W–B2 IP4Engine Control Module 5–13 5–14 2R–Y4W–B2R–WW–BI4Ignition Coil andIgniter No. I5Ignition Coil andIgniter No. 5W–B3Ign ition3G1B–RR–YB–R3G–W1B–R
4 GX 470P ow e r S o urc eC ha rg in g1432ACCW–L2 AM1IG1 4L–YW–R7 AM2IG2 6B–RL–Y2 ICB–RST210A IG16 IDI18Ignition SWW–LW4 IG22GR–LR–L2W–R19 A2227 IP42GR28 DGRGR2J1JunctionConnectorGR–L1W2Body ECU 1–48 1EEGR7. 5A ALT–S30A AM2140A ALT1C 9(A), C12(D)CombinationMeterCharge21WWGR50A AM12003 LEXUS GX 470 (EWD519U)7. 5A GAUGE20 IEBBW2 EB13 EB1GRWBJ22JunctionConnectorY–R1 BSL BIG BB ABatteryB5 EB14Y–R2W1G 1(A), G 2(B)GeneratorM
10AETCSW–R2O2003 LEXUS GX 470 (EWD519U)2Battery30AAM24 IGL22BLL–BW–LSHORT PINFront LeftFenderACC �W432A12 IB4GR12J19JunctionConnector20AEFI2GR2AA8 IK15L1210AIGN23 IE2W–G127. 5AGAUGEB–O11 IJ7. 5AACC5 IDC17IB42IA210AEFINO. 210 IP43511IP3C/OPNRelay42222 IP3122GR–B122B–R6 IDBBB–O1140AALTI18Ignition SWST2B–R3 IP4J5JunctionConnector217. 5AOBDIG2 67 AM2L–YW–GB2150AAM122IG1 42 AM13E n gin e C o ntro B–RL–YL–BW–RPONMLKJIHGFEDCBA(Cont. next page)B–O2210AECU–BL8 IP422W–LACC 32B–O121P ow e r S ou rc eB–R25 GX 470M OVERALL ELECTRICAL WIRING DIAGRAMB–WBL–WJ9JunctionConnectorL–WW–B
5 GX 470 (Cont’ d)(Cont. next page)E n gine C on ��OW–GFGHR–YCombinationMeter 37–5 2415EEWFSE19 E3 EBATTFPR33 A6 D BMFC10 EGR–BEMRELG–RESIL18 E8 ER–WETC7 1BWR–YR–YR–YR–BR–BBR19 IO2SuspensionControlECU 16–3 Skid ControlECU 15–8 Body ECU 1–48 SuspensionControlECU 16–3 AirbagSensorAssembly 14–4 nder theDriver’ s SeatBMRight QuarterPanel InnerBPHIJAJ32JunctionConnectorARear Bank ofLeft CylinderHeadBRPE20 ER–YR–W9 IO2517 1AJ13JunctionConnectorEF15FuelPumpW–BL–YF6Fuel PumpResistor5 1AWB–RM5 1D7R–B17 1A5 1C12 IH142C16 5 1AL55 1BSILW–G2TSP–LWFSETCE 5(A), E 6(B), E 7(C),E 8(D), E 9(E)Engine Control ModuleCG13P–LSGD3Data Link Connector3P–BTACP–LBATT5 1E5P–LC3 IB4P–L9B–W41NFP–BO163B–R2003 LEXUS GX 470 (EWD519U)2FUELPMPRelayLEL–BC14 IB42AirbagSensorAssembly 14–4 B–WSkidControlECU 15–8 B–W2MDLW–GSuspensionControlECU 16–3 KBCOOJR–LR–LMulti–Display 33–8 34–8 IAL–BEGJ11JunctionConnectorIHLeft KickPanelM
2003 LEXUS GX 470 (EWD519U)18IO2V8VSV (CanisterClosed Valve)L–WL–WEE2OJ26Junction ConnectorBR22 IO27 IO2L–RY–RL–W2D4 ID2OD2 ID2BRIBL–RA17 ID24R–B3E2VTA2M–M BRGE0117 CT2Throttle Control MotorThrottle Position Sensor12RJL–W6M–2 CGBC 9(A), C12(D)Combination MeterVTA1M 3 CTHW1219 AR–LL–W1OVCL–R5VTA231 AE3 BVG530 AVG#85 CW–R1BR8 BE2L–R16 BE2BBYJ10JunctionConnector10 BE23BVTA121 A#76 CE2G29 A20 ATHANSW16 18 A#63 BB–RCR–BL–RD5 ID2W–G2B–OCB–OGNDR–LPTNKR–LV6Vapor Pressure SensorL17 r21 EI10Injector No. 2PRGI11Injector No. 334 AI12Injector No. 4CCCVR#5I15Injector No. 727 AB–R5 AI14Injector No. 6 B2B–R#412I16Injector No. 82 EY4 A12M1Mass Air Flow MeterBRAAE228 ASTAR9 BAPark/NeutralPosition SW 2–2 J26JunctionConnector BB–R#3G3 AB–R#2R2 A12B–RW#112B–RB–R1 A12B–RR–BIGSW12B–RB–R9 E12B–RL–YACCRI9Injector No. 1AA12B–RB–R15 AAB–R12L–YW5 IO25IO211Body ECU 1–24 L–YR–YW–RBRELS12 EDCBA(Cont. next page)L–Y11 EC13 IB4W–GL–R1 E10 D19 A10CombinationMeter 37–5 H9E n gine C on trolB–RE 5(A), E 6(B), E 7(C), E 8(D), E 9(E)Engine Control CBA5 GX 470 (Cont’ d)M OVERALL ELECTRICAL WIRING DIAGRAMBRBRL–WE2Engine CoolantTemp. SensorBRI13Injector No. 5(Shielded)BRR–LL–RBRV2VSV (EVAP)L–WB
5 GX 470 (Cont’ d)(Cont. next page)E n gine C on trolABC13W–R* 1 : w/o LEXUS Navigation System* 2 : w/ LEXUS Navigation System161514W–RR–YR–YL–YL–YABCA20Accel Position SensorCombinationMeter 37–5 HT1A23 AIGF117 ASTSW25 B21 B2 DSTAE 5(A), E 6(B), E 7(C), E 8(D), E 9(E)Engine Control ModuleOX2BOX1BHT2B4 B12 CIGF229 B14 DACMGHT1BNE 5 B31 DTHWO25 C32 DA/CSEEL–WEGBE4 ED1(Shielded)J26Junction ConnectorBRBEBRK2Knock Sensor RHBR2 ED11BRBRBR(Shielded)J26JunctionConnectorKNK11 B1K1Knock Sensor LHCEPA2BRCBR29 EEPAWCCD1 ED1(Shielded)BRL–WBRBRL–WBRL–WBRBRL–WCBR28 EVCP2BR427 EKNK2128 IB3W22VCPA(Shielded)4E1G2 B26 EVPA22 B(Shielded)4E1HT23 EC1Camshaft PositionSensor2 BOXVPA32 CRE1OX1BR4 BHT3C2Crankshaft PositionSensor2HT3H6Heated Oxygen Sensor(Bank 1 Sensor 2)E1OX1H8Heated Oxygen Sensor(Bank 2 Sensor 2) B1H5Heated Oxygen Sensor(Bank 1 Sensor 1)OXH7Heated Oxygen Sensor(Bank 2 Sensor 1)HT322 EACLDG2–27 ded)GB–L(Shielded)333 DG2 NE–24 C11THE19 IB3G–Y24 AIGT8G–Y10 A10 IB3L–W23 BIGT7L–WOX1A22 B13 A21 IB3Y–BIGT6Y–BOX2A26 A9 IB3G–RIGT5G–R12 A2GRIGT4EP25L–YHT2A33 B11 AEP11Y–GIGT3VCP2420 IB3Y–RAP–B25 –WR–YG–BG–WGG–RL–BG–OL–YB–Y2003 LEXUS GX 470 (EWD519U)8 AIGT1VPA26P–BP–BAA9 AVPA1L–YMG CLT Relay 38–3 Park/NeutralPosition SW 3–2 ST2 Fuse 2–3 Ignition Coil and Igniters 3–1 3–2 3–3 3–4 A/C Control Assembly(*1) 38–12 A/C ECU(*2) 38–12 Rear Bank ofLeft CylinderHeadM
B–OR–YW–RE01Detection SW(Transfer NeutralPosition) 18–4 B–WV–RGME014 CE1C1 CENG 24 EW–BW–B2003 LEXUS GX 470 (EWD519U)W–GW–BW–BBRA3A/C Lock SensorBRILBRRight KickPanelJ23JunctionConnectorIMO26 DIMI27 DL–RW–R6EFIOIG2D7EFII914GND ock Warning SW 1–26 EGAW–BTRC–31 EG–YRear Bank ofLeft CylinderHeadW–B2 IO3HP1 DTRC 25 E5TXCTDoor Courtesy SWFront LH 1–43 C15 EENG–30 E4CODER–YC2123 CE 5(A), E 6(B), E 7(C), E 8(D), E 9(E)Engine Control ModuleLCKIEOMNEO1VC5ANT1CombinationMeter 1–24 EEW–LV–WRear Bank ofRight CylinderHeadAirbag SensorAssembly 14–4 E03G–W7 CDetection SW(Transfer L4 Position) 18–1 E02G–Y6 AStop Light SW 11–1 17 EB–RSTPP19 DR–YL4R4 DW–RF/PS4 1D3 1BR7 ACombinationMeter 37–4 37–6 W14 E2 1C1 1BTransponder Key CoilYTACHB5 E10AECU–IG28 IJ4 IL4 IBI17Transponder Key AmplifierE ng in e Imm o bilis e r S y s temY–BSPDY17 DL–Y2 IC19B–RBRTFNSkid Control ECU 15–4 18B–RW–R11 C17E n gin e C o ntro lW–RCBA5 GX 470 (Cont’ d)M OVERALL ELECTRICAL WIRING DIAGRAMT9Transponder B
(Cont. next page)6 GX 470P o w e r S o urc eE le ctro n ic ally C o ntr olle d T ra ns m is s io n an d A /T In d ic ato r1432W–GL–Y2 AM1ACC 3W–GIG1 4L–YR–LB–RABCW–L6 ID7 AM2IG2 6B–RST210AIGN27. 5AGAUGEI18Ignition SW211 IJ24 IG2B–OL–BW–G12C17 IB48 IP4S1S2SR11 B10 B15 BSLT 13 BSLT–12 BSLU 16 CSLU–15 C35 BNT SL1 19 B26 BNT–SL1–18 BSL2 17 B34 BSP2 SL2–16 BTH0132 BSP2–TH0224 BE228 A310SL2 SL2–9BRRLYVOT OT2 YSL1–OSL1 LGSBSLU–GRBSLU GWBSLT–BR11SLT onnector20AEFIW–B227 BIGSWB10AETCS1B2J2JunctionConnector30AAM2 B22 EW–B2W–B2B22 B1 E29 E BML212L–BW–RW22E 5(A), E 6(B), E 7(C), E 8(D), E 9(E)Engine Control Module6 DBATTG33 EMRELB–O8 E1L–BLW–G1EFIRelay2Y2511C3 IB4L2140A ALT2003 LEXUS GX 470 (EWD519U)T4TurbineSpeedSensorR–LV1Vehicle Speed M1BW–B10 IP4BYOOT–EBOT2–1BRBattery2BRE1Electronically Controlled Transmission SolenoidFront LeftFenderM
E017 AE026 AME015 DSNW1WFSEGR–L2003 LEXUS GX 470 (EWD519U)AM–GE01THWVG15 EW–BW–BW–BJ10Junction ConnectorBRBRW–BE4Electronically ControlledTransmissionPattern Select SWGR–L2nd STRTRear Bank ofLeft CylinderHeadTHA26 E27 E9 A3 DSNWOVPA2 VCPA VCP27 IO1VPABRBREGCCE2G23 E25 DSPD6 EPSTP17 D 19 DOILWEPA229 E7 AEPA28 E4 AGR–RA/T OIL TEMP2nd STRTW–BRight KickPanelJ23JunctionConnector2 IO31 CE 5(A), E 6(B), E 7(C), E 9(D), E 8(E)Engine Control ModuleEOME1M 29 A 20 A 22 EPILA1 DHPVTA230 A23 D4AA2GR9 DJ19JunctionConnectorC 9(A), C10(B)Combination MeterP–L4VTA12 C 17 C 19 AW–B39 2C9 2EVC3 C8 IKR311 DA12IB4ACC CUTRelayG–RRear Bank ofRight CylinderHead4 CSIL18 A 21 A 31 AGR7. 5AACC42222G–WD10 DN7 EG–YEngine Control System 5–3 21C12IB488 DL31320 DGRGR19 Back–UpLight)2R–LEEE037 CTC19 E7 IK10AIG1NO. 25 IDGRSTA18 EL–Y2 IC7G–OSTAR STSW20 EEngine Control System 5–8 5–10 5–11 5–12 5–14 5–15 5–16 5–17 5–18 6IHGFEDCBA(Cont. next page)G–RNSW12 C 17 A5W–G9 BR–LL–YW–GE le ctro nic ally C o ntro lle d T ra ns m is s io n an d A /T In dic ato rGR16 ACBA6 GX 470 (Cont’ d)M OVERALL ELECTRICAL WIRING DIAGRAMR–YGRG–BW–BW–BW–B
6 GX 470 (Cont’ d)E le ctro n ic ally C o ntr olle d T ra ns m is s io n an d A /T In d ic ato r9A2IO1G121110GG* 1 : Near the Right Side of Steering ColumnP1Park/Neutral Position SW3RBPL21G–BG–WSkid Control ECU 15–8 Body ECU 1–48 15 IM1G–B8 IO1G–BG–BJ24JunctionConnectorEE19 3AR–Y8 3BG–WR–B9 3BG–B2 IJG–B10 2E8 3A18 3AR–B2 ILR–BG10 2C14 IM1R–B20 2ACW–BEJ15JunctionConnectorR–BR–B10 2DC9IO1R–BNavigation ECU 33–6 34–7 3 IM1CCR–BW–B18 IM1G–YJ24JunctionConnector1 IO1E12G–YCC19 IM1P–LCCD4Remote ControlMirror ECU 22–3 RR–BR–BG–W6P43Y–L16 IM1G–WEG–YG–RG–WEGER–Y9 SDG–YEP–LG–YDFDN10 IO1L3G–R2NSSLG–WATLAT2S5TransmissionControl rFFG–Y5Wiper Relay 19–3 LDL D42LA19A/T Shift IndicatorBG–R2003 LEXUS GX 470 (EWD519U)B11221 IM1Y–LB1G–OJ18Junction ConnectorBG–BG–OFG–RG21 IO2G–W20 IO2G22 IM120 tialLock System 18–4 J18Junction ConnectorEG–BP–L4L2N16 B18 B6 A19 BP3C 9(A), C10(B)Combination MeterG–B17 BR13 BR–B18 AD15 BG–YG–WLG–RP–LG–O14 BJ14JunctionConnectorW–BA/T PAIJ*1M
2003 LEXUS GX 470 (EWD519U)BatteryFront LeftFenderBJ21JunctionConnectorBW–BW–RB10 IP4CCCS24 D514 IH1W–BBON–OFF4CANCELBRJ13JunctionConnectorAA10 IO24 IG7. 5AGAUGEBR19 AR–L4 DCBRW–BBLLL–BEGCC1 CE1PI13 DBRECCJ5Junction ConnectorC13CombinationSWB–O– SET RESCCSIGSW9 E10AIGNBREBJ2JunctionConnectorCE 5(A), E 6(B), E 7(C), E 8(D), E 9(E)Engine Control ModuleL–BBBC B22 EST1–12 DL–B120AEFI B1 E BM6 DStop LightSystem 11–2 110AETCS2W–GBATTL3 ER–LMRELB–O11 IJB–O8 E5 IP3BB23 IE6 ID4LG230AAM222C3 IB4L–B8 IP4R–L2EFIRelayC17 IB41S17Stop Light SW21242B–RB–O352W–GL33C ruise C o ntro lRear Bank ofLeft CylinderHeadJ10JunctionConnector(Cont. next page)CRUISE122B–RL–B2ST2IG2 62B–O2I18Ignition SW7 AM21P o w er S ou rc e7 GX 470M OVERALL ELECTRICAL WIRING DIAGRAMC 9(A), C12(D)Combination MeterR–LBRBW–B
7 GX 470 (Cont’ d)C ruise C o ntro l58762003 LEXUS GX 470 (EWD519U)Engine Control System 5–8 5–10 5–11 5–12 5–15 5–16 5–17 5–18 E017 AE026 AE037 CME014 C28 A20 EE2TC18 E 19 E 18 ASILWFSEVC21 AVTA131 AVTA23 CM E 5(A), E 6(B), E 7(C), E 8(D), E 9(E)Engine Control ModuleS1EOMHP1 D15 E11 B2 CM–S210 B17 CGE01SR15 B22 E 23 E 26 E27 E28 EVPAVPA2 VCPA VCP2EPASLT SLT–SL1 SLU SLU–13 B 12 B 16 C 15 C 19 B29 EEPA2SL1–18 B17 DSPDSL2 17 B19 DSTPSL2–16 BD10 DW–BW–BW–BW–BW–BW–BElectronically Controlled Transmission andA/T Indicator System 6–2 6–3 6–4 6–8 2 IO3W–BW–BAJ23JunctionConnectorEERear Bank ofRight CylinderHeadILRight KickPanelEGRear Bank ofLeft CylinderHeadM
DCGB–RBARL–Y(Cont. next page)M OVERALL ELECTRICAL WIRING DIAGRAMGBody ECU 1–8 Back Door Panel CenterDGW–B2G14J17JunctionConnectorL2License PlateLight RHTowing Brake Controller 9–4 L1License PlateLight LHW–B2W–B1DGGDG15 BH1G3 IR2GBQGR15Rear CombinationLight RHLeft QuarterPanel InnerAJ32JunctionConnectorW–BFront RightFender52AGCC52J30JunctionConnectorR14Rear CombinationLight LHGF4Front Parking Light RHFront Side Marker Light RHEA1W–B4G11 IBParkingW–BGEBW–BParkingFront Left FenderD ASide MarkerG1D AF BF B9 IBG3J 7(A), J 8(B)JunctionConnector413 IF3T a illigh t a nd Illu m in ationBPW–BCG3GSide Marker10A TAILF3Front Parking Light LHFront Side Marker Light LH5 ILG10A PANEL21 IJ2GTAILMultiplex CommunicationSystem 1–23 8 CTRLY18213B 5(C)Body ECUL–WB–RIG2 6ST2IG1 4ACCL–Y1 IC5TAIL RelayBattery140AALT122I18Ignition SW50A AM12121W–R122W–R10A DOMESHORT PIN12122003 LEXUS GX 470 (EWD519U)2W–L2R28 GX 470B30A AM21P ow e r S ou rc e22W2W–L27 AM22 AM150A J/B
GGGGGG(*3)G(*4)G–R(*3)G–R(*4)GGGGGGR4Rear Cooler SWW–GW–GC16Console Box IlluminationA19A/T Shift IndicatorD5Downhill AssistControl SWH14Height Control andSuspension SWW–GM5Multi–DisplayS4Seat Heater SWFront RHS3Seat Heater SWFront LHGW–GW–BW–B11 IM1W–B(*3)A22Accessory o and Player System 35–9 36–6 W–GE4Electronically ControlledTransmission Pattern Select SWW–GR11Remote ControlMirror SWC13CombinationSWW(*4)G–R(*4)C4Center Diff. LockControl SWM4Mirror Heater SWC8Cigarette LighterIlluminationA33Ashtray IlluminationH11Hazard SWM3Main SWD19Door Lock ControlSW RHBBW–BJ25JunctionConnectorRight KickPanelILRight unctionConnector382KW–GW–G4 IQ1W–GW–GW–GW–GW–GW–GW–GW–GW–G4 2D3 61 IJ13 2A4 2A10 IM11J23JunctionConnectorAAAAG2132AB710682221523 2CB5526EAU2 2A1ILL 1112411 2C6615141 2A2 2C91432 IJ138 IJ1A2 2E11 2A1 2E12 2A2003 LEXUS GX 470 (EWD519U)8 IQ22 IM11 2B1 2D6 IK16 L–YB1 : w/ Rear A/C2 : w/o Rear A/C3 : w/ LEXUS Navigation System4 : w/o LEXUS Navigation System****T a illigh t a nd Illum in ationAR8765RA(Cont. next page)8 GX 470 (Cont’ d)GM
M OVERALL ELECTRICAL WIRING DIAGRAMG–R(*4)5 3DG–R(*3)5 3A5 3BG–R12G–RBody ECU(ACAN) 1–48 Rear Bank ofLeft Cylinder Head15 3A5 3C5 3EG–R16 AG–R* 3 : w/ LEXUS Navigation System* 4 : w/o LEXUS Navigation SystemG–R(*3)BREGBR7 IO19 A13 love Box Light )BG–R(*4)BJ19JunctionConnectorW–GLW–GKI2003 LEXUS GX 470 (EWD519U)J26 IJ120 BW–GG–RR 1(A), R 2(B)Radio and Player12 AG2 ��YG36 IJ1G–R2 IJ19BBG–R15 BG27 CG(*4)EGEACAN13A13(A), A14(B), A15(C)A/C Control Assembly (*4)A/C ECU (*3)18 2JunctionConnector2212EG(*3)ILL 10H13HeaterControl SWRight Kick Panel2AW–B112W–BEG8 GX 470 (Cont’ d)Left Kick Panel6W–BILG4Glove BoxLightW–G38TCG–RBody ECU(TC) 1–21 L22 ICGRG7 IKT aillig ht an d Illu mina tio nL–YTRR12Rheostat10A IG1 NO. 2Sub BodyECU 1–12 9 1BC 9(A), C12(D)Combination MeterW–G19 1A7. 5A GAUGEW–G9 1A17 A20 AR–L19 A4 IG6 IDB–R11R4 IP3R
9 GX 470P o w e r S o urc eT r ailer T o w ing1432BA5 IB4DAC Relay 11–3 2IG1 4L–Y2Turn SignalFlasher 10–5 B–YGB2ACCW–L 2 AM122 IC222698GNDC1434BW–B1GR–LWGR5TOWINGTAILRelay23 BF14 BF12 IA1STTLT14Trailer tionConnectorW–BBK/UP LP Relay 13–4 AAABPW–B3 ID2TAIL Fuse 8–4 Stop Light SW 11–1 R–YB1 BG1BatteryFront LeftFender BT8Towing BrakeControllerTAIL1 BF13 BG1BEB2STOPYW2BG1BGBLW–BBody ECU 1–5 TAILLJ2JunctionConnector1BRKBBL11 IA2BY3STTR30ATOWING27BRK451C8 ID2L4LW–B24R42 BF15BR2BY3BATTCHGRelay2L–OE4L–R4J31Junction YGR–L1STIN3 B20 IE1 IA2RTINLTINT13Towing –Y1I18Ignition SWGR30ABATT CHG40ATOWING30ABRAKE CTRL12GR2003 LEXUS GX 470 (EWD519U)12Left QuarterPanel InnerW–BNear the RightSide of SteeringColumnJ14JunctionConnectorIJM
B–Y2W2GR–LLeft Kick PanelJ11JunctionConnectorA50A AM1W–BAA2E2003 LEXUS GX 470 (EWD519U)WW–BB–YH11Hazard SWFrontLeft FenderW–BW–BW–BW–BW–BW–L140A ALT15A onnector42C10 IB42FRTRW–BILA42C15 IB4Body ECU 1–48 L–BW–BIJA3215 IJ14 IJ4FRTLF3Front Turn Signal Light LHW–BNear the Right Side ofSteering ColumnJ14JunctionConnectorA W–BTR3HAZ11LG–B4(Cont. next page)Body ECU 1–22 Front Right FenderF4Front Turn Signal Light RHIHATL1ER8DRL12L–YBattery2Turn SWC14Combination SWRHLHEL7G–B1EG–Y2GR9L–B1227 IK1T10Turn Signal Flasher3L–Y12210AIG1NO. 2L–Y2 ICBIG62T urn S ig n al an d H a z ard W a rning L igh tWA2 IB4I18Ignition SWIG1 4ACCB–Y2 AM11P o w er S ou rc e10 GX 470M OVERALL ELECTRICAL WIRING DIAGRAM
10 GX 470 (Cont’ d)T urn S ig n al an d H a z ard W a rning L igh t5768T10Turn Signal FlasherLLLR53L–YL–B5 IJ9 IF15 IF3 IGJ30JunctionConnectorL–BA2 B7 BLH4TurnR15Rear CombinationLight RH5RHL–YL–BTurnC 9(A), C10(B)CombinationMeter59 ABRTowing Converter Relay 9–3 R14Rear CombinationLight LH4L–BL–YJ30JunctionConnectorDAA2 IGL–YL–BDDL–Y2003 LEXUS GX 470 (EWD519U)23 IJ7 IO1Left Quarter Panel InnerBPBRW–BW–BAAJ32JunctionConnectorEGRear Bank ofLeft CylinderHeadM
50A AM1W–L140A ALTBattery2003 LEXUS GX 470 (EWD519U)G–YG–YG–R10A STOPWBTowing Brake Controller 9–4 G–YJ 7(A), J 8(B)JunctionConnectorEngine Control Module 5–17 G–YG–YShift Lock ControlECU 24–4 G–YDG–YJ16JunctionConnectorD G–YLGDStopLeft QuarterPanel InnerAR15Rear CombinationLight BW–BG–YBQ1214 BH1Back DoorPanel CenterH19High MountedStop LightR14Rear CombinationLight LHGDAC RelaySkid Control ECU(STPO) 15–7 GG–YSkid Control ECU(STP2) 15–8 BPAG–YDF AA53G–Y18 IP3G–YA564 IR2G–Y2Suspension ControlECU 16–6 J9JunctionConnectorS17Stop Light SWAG–RD BB–RF AD B2BDSkid Control ECU (STP) 15–8 1224 IEJ30JunctionConnectorBDDG–Y22221G–Y16 IFBBDJ22JunctionConnectorG–Y35G–Y12 IJG–YTrailer ConverterRelay 9–4 4Wiper Relay 19–3 2 IE2 ICB–R1G–R2G–Y12L–YG–Y22IG1 4ACC1S to p Ligh tG–Y2I18Ignition SW2 AM1P o w e r S o urc e11 GX 470M OVERALL ELECTRICAL WIRING DIAGRAM
12 GX 470P ow e r S ou rc eF ro nt F og L igh t1432Cut OffR–B24 IA2LG–RLG–R115HEADRelay22210AHEAD(LO LH)J6JunctionConnector3A22ALG2LGLGLGR–YTaillight andIlluminationSystem 8–2 15A FR FOG12 IP5BE A22E B22W–BW–BLG–RR–Y29 A52BRCut Off210 IA2FR FOGRelayC14Combination SW2327 IO1LG16 BC 9(A), C10(B)Combination Meter1Front Fog1F2Front Fog Light RHF1Front Fog Light LH1BR–GJ 7(A), J tor2W2003 LEXUS GX 470 (EWD519U)1AA2LFG BFGG–RFront FogLight SWBOFFLGON10BatteryCombination SW 1–23 R–W11 IP511G–RBRW–BW–BW–BFront Left FenderEBEAFront Right FenderEGRear Bank ofLeft CylinderHeadM
22GRGR24250A AM12003 LEXUS GX 470 (EWD519U)W–BGBWW–L140A ngine Control System 5–3 BatteryRight Kick PanelR–BJ23JunctionConnector5CC22 BH1ATrailer Socket 9–3 J33Junction ConnectorR–B5 BH2AADW–BILA5R–Y1 IO1P1
2003 lexus gx 470 (ewd519u) m overall electrical wiring diagram 13 14 15 16 1 gx 470 (cont’
