Lexus GS IV (2011-2015) electronic power steering system Wiring diagrams

A/C LH J/B HTR COMP ALT ABS 1 FUSE ALT ALT FUSE ANTI-LOCK BRAKES SYSTEM ANTI-THEFT, ELECTRONIC POWER STEERING SYSTEMS ARS FUSE VGRS FUSE ASSEMBLY 1 (RIGHT REAR OF ENGINE COMPT) BATTERY BLK WIRE BLK/BLU WIRE BLU WIRE DCM FUSE DOME FUSE ECU-B FUSE ELECTRONIC POWER STEERING SYSTEM ELECTRONIC SHIFT POWER INTERLOCK STEERING SYSTEM SYSTEM ENGINE ROOM J/B 1 (RIGHT REAR OF ENGINE COMPT) ENGINE ROOM R/B ENGINE ROOM R/B 2 (LEFT SIDE OF ENGINE COMPT) EPB EPS FUSE FUSE FILTER FUSE FUSE GRN WIRE GRY WIRE H-LP CLN FUSE H-LP LO FUSE HEADLIGHTS SYSTEM HORN FUSE HORN SYSTEM INTEGRATION RELAY ENGINE ROOM J/B 2 (LEFT SIDE OF ENGINE COMPT) LH ALT-S ABS 2 ETCS ST J/B-B FUSE FUSE FUSE FUSE FUSE LT BLU WIRE LUG J/B ALT LUG J/B-B MAIN BODY ECU MEMORY SYSTEMS MPX-B D/C CUT FUSE FUSE NAVIGATION SYSTEM NAVIGATION, SOUND SYSTEMS ODS FUSE EPS-B FUSE P/I ALT FUSE P/I-B 2 FUSE PNK PNK PNK PNK WIRE PNK PNK WIRE PNK WIRE POWER WINDOWS, DOOR LOCKS, ANTI-THEFT, MEMORY SYSTEMS PNK WIRE POWER WINDOWS, DOOR LOCKS, ANTI-THEFT, SEATS, MEMORY SYSTEMS MEMORY SYSTEMS PTC 1 PTC 2 FAN 1 FUSE FUSE FUSE FUSE FUSE FUSE R/B-B FUSE RED WIRE RH J/B ALT FUSE RH J/B-B FUSE P/I-B 1 FUSE STARTING/ CHARGING SYSTEM STARTING/CHARGING SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM TO CERTIFICATION ECU (DIAGRAM 3 OF 4) TO ENGINE ROOM J/B 2 (DIAGRAM 2 OF 4) TO LUGGAGE ROOM J/B (DIAGRAM 2 OF 4) TO LUGGAGE ROOM J/B 1 (DIAGRAM 2 OF 4) TO RIGHT COWL SIDE J/B (DIAGRAM 2 OF 4) TO RIGHT COWL SIDE J/B (DIAGRAM 3 OF 4) TRUNK, TAILGATE, FUEL DOORS SYSTEM TV FUSE VIO WIRE WHT WIRE WHT/BLK WIRE WIPER/ WASHER SYSTEM WIRING HARNESS CONDENSER YEL WIRE

ALT ANTI-LOCK BRAKES SYSTEM BATTERY BLK WIRE BLK/WHT WIRE BLU WIRE D/C CUT FUSE DC/DC FUSE DOME FUSE DOOR LOCKS, ANTI-THEFT SYSTEMS ECU-B FUSE ELECTRONIC POWER STEERING SYSTEM ENGINE CONTROLS SYSTEM ENGINE ROOM J/B 1 (LEFT SIDE OF ENGINE COMPT) EPB FUSE EPS FUSE EPS-B H-LP LO FUSE FUSE ETCS FUSE FROM IGCT 1 FUSE (DIAGRAM 1 OF 7) ABS MAIN 2 ABS MAIN 1 FUSE FUSE FUSE FUSIBLE LINK BLOCK (LEFT REAR OF LUGGAGE ENG R/B-B COMPT) FUSE GRN WIRE GRY WIRE HEADLIGHTS ELECTRONIC SYSTEM POWER STEERING SYSTEM HORN FUSE HORNS SYSTEM IGCT 1 FUSE INTEGRATION RELAY INTERIOR LIGHTS SYSTEM (LEFT END OF DASH) LEFT COWL SIDE J/B INV W/P FUSE LT BLU WIRE LT GRN WIRE LUG J/B-B MAIN BODY ECU MEMORY POWER WINDOWS, SYSTEMS DOOR LOCKS, ANTI-THEFT, MEMORY SYSTEMS MEMORY SYSTEMS MPX-B FUSE OIL PMP FUSE OIL PUMP RELAY ABS 2 FUSE P/I DC/DC P/I-B 1 FUSE PNK WIRE POWER WINDOWS, DOOR LOCKS, ANTI-THEFT, MEMORY SYSTEMS RED WIRE RH J/B DC/DC FUSE SHIFT INTERLOCK SYSTEM TO ABS 2 MAIN FUSE TO LH J/B-B FUSE (DIAGRAM 2 OF 7) TO LUG J/B DC/DC FUSE (DIAGRAM 2 OF 7) TO LUGGAGE ROOM J/B 1 (DIAGRAM 6 OF 7) TO RIGHT COWL SIDE J/B (DIAGRAM 3 OF 7) TRUNK, ANTI-LOCK TAILGATE, FUEL BRAKES DOORS SYSTEM SYSTEM TV ODS FUSE FUSE VIO WIRE WARNING, SUPPLEMENTAL RESTRAINTS SYSTEMS SOUNDS, NAVIGATION SYSTEMS YEL WIRE

A/F INJ RELAY RELAY AIR BAG FUSE BACKUP FUSE BACKUP RELAY BLK WIRE BLU WIRE COMPUTER DATA LINES SYSTEM CRUISE NAVIGATION CONTROL SYSTEM SYSTEM DOOR LOCKS, POWER WINDOWS, ANTI-THEFT, MEMORY SYSTEMS ECU-B 3 FUSE EFI MAIN 2 RELAY EFI MAIN FUSE EFI- MAIN 1 RELAY ELECTRONIC POWER STEERING SYSTEM ENGINE CONTROLS SYSTEM ENGINE ROOM R/B 2 GAUGE (LEFT SIDE FUSE FUSE OF ENGINE COMPT) EPS-IG FUSE F/R DOOR FUSE FROM ENGINE ROOM J/B 1 (DIAGRAM 1 OF 4) FROM ENGINE ROOM R/B (DIAGRAM 1 OF 4) FROM LEFT COWL SIDE J/B (DIAGRAM 4 OF 4) FUSE FUSE ENGINE CONTROLS SYSTEM GRN WIRE GRY WIRE INJ IGN FUSE FUSE INSTRUMENT CLUSTER SYSTEM LEFT "C" PILLAR) LEFT COWL SIDE J/B (BEHIND LEFT END OF DASH) LT GRN WIRE MULTIMEDIA FUSE FUSE NAVIGATION SYSTEM NAVIGATION, SOUND SYSTEMS PASSIVE RESTRAINTS, AIR CONDITIONING SYSTEMS PNK WIRE POWER WINDOWS SYSTEM PTL FUSE PSB FUSE R/R DOOR FUSE RAD 1 RAD 2 FUSE FUSE RED WIRE RELAY RR ECU-IG FUSE RR FR S/HTR S/HTR FUSE FUSE RR IGI RR J/B-B FUSE SECURITY HORN RELAY SHIFT INTERLOCK SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM TO CERTIFICATION ECU (DIAGRAM 3 OF 4) TO RIGHT COWL SIDE J/B (DIAGRAM FROM ENGINE 3 OF 4) ROOM R/B (DIAGRAM 1 OF 4) TRK OPN FUSE SECURITY FUSE TRUNK, SEATS TAILGATE, SYSTEM FUEL DOORS SYSTEM TRUNK, TAILGATE, FUEL DOORS, DOOR LOCKS, ANTI-THEFT SYSTEMS VIO WIRE WARNING, DOOR LOCKS, ANTI-THEFT SYSTEMS WHT WIRE YEL WIRE

11 10 PNK CUTB WIRE 4 24 ACCD AGND AIR CONDITIONING SYSTEM AVS FUSE BLK WIRE BLU WIRE CERTIFICATION ECU (RIGHT END OF DASH) COMPUTER DATA LINES SYSTEM DOOR LOCKS, ANTI-THEFT, WARNING SYSTEMS ELECTRONIC POWER STEERING SYSTEM ELECTRONIC SUSPENSION SYSTEM ENGINE CONTROLS, TRANSMISSIONS SYSTEMS ENGINE SWITCH FR P/OUTLET FUSE FR PWR OUTLET RELAY FR+ FR- FROM FROM ENGINE ROOM J/B 1 (DIAGRAM 1 OF 4) FROM ENGINE ROOM J/B 2 (DIAGRAM 2 OF 4) FROM LEFT COWL SIDE J/B (DIAGRAM 2 OF 4) FROM RIGHT COWL SIDE J/B (DIAGRAM 1 OF 4) FROM RIGHT COWL SIDE J/B (DIAGRAM 2 OF 4) +B FUSE FUSE FUSE GRN WIRE GRY WIRE INSTRUMENT CLUSTER, NAVIGATION, SOUND SYSTEMS LT GRN WIRE MAIN BODY ECU LEFT COWL SIDE J/B (BEHIND (LEFT SIDE LEFT END OF DASH) OF DASH) MEMORY SEATS SYSTEMS SYSTEM MEMORY SYSTEMS NAVIGATION SYSTEM NAVIGATION, SOUND SYSTEMS AIR CONDITIONING ANTI-LOCK SYSTEM BRAKES SYSTEM OBD FUSE PASSIVE RESTRAINTS SYSTEM PNK WIRE POWER OUTLET SOCKET ASSEMBLY POWER WINDOWS, DOOR LOCKS, ANTI-THEFT, MEMORY SYSTEMS REAR POWER OUTLET SOCKET ASSEMBLY 2 RELAY RH-IG WASH FUSE FUSE RIGHT END OF DASH) RR P/OUTLET FUSE RR PWR OUTLET RELAY SEATS SYSTEM SEATS, MEMORY SYSTEMS SEATS, NAVIGATION, SOUND SYSTEMS SHIFT INSTRU- INTERL- MENT OCK, CLUSTER TRANSMI- SYSTEM SSIONS SYSTEM SHIFT INTERLOCK SYSTEM STRG HTR FUSE SUPPLEM- ENTAL RESTRAINTS TO LEFT COWL SIDE J/B (DIAGRAM 4 OF 4) TO WASH FUSE (DIAGRAM 3 OF 4) RH ECU-IG FUSE VIO WIRE WARNING SYSTEMS WHT WIRE WHT/BLK WIRE WIPER/ TRANSMISSIONS COMPUTER WASHER SYSTEM DATA LINES SYSTEM SYSTEM YEL WIRE

1 2 3 4 5 6 7 8 IG 6 OF 7) AC INV (HV) FUSE AC INV (HV) RELAY AIR CONDITIONING, SEATS, SOUND, NAVIGATION SYSTEMS BACK UP RELAY BACK-UP FUSE BATT FAN (HV) FUSE BATT FAN (HV) RELAY BLK WIRE BLU WIRE CRUISE CONTROL SHIFT SYSTEM INTERLOCK SYSTEM DC/DC-S (HV) FUSE ECU-B 3 FUSE ELECTRONIC POWER STEERING SYSTEM ENGINE CONTROLS SYSTEM EPS-IG FUSE FR S/HTR FUSE FROM ENGINE ROOM R/B (DIAGRAM 2 OF 7) FROM FUSIBLE LINK BLOCK (DIAGRAM 1 OF 7) FROM LEFT COWL SIDE J/B (DIAGRAM 4 OF 7) FROM PTL FUSE (DIAGRAM GRN WIRE GRY WIRE J/C LEFT "C" PILLAR) LT GRN WIRE NAVIGATION SYSTEM PASSIVE RESTRAINTS SYSTEM POWER OUTLET SOCKET ASSEMBLY PTL FUSE RED WIRE RELAY RR ECU-IG FUSE FUSE RR J/B-B PSB SECURITY FUSE FUSE FUSE RR S/HTR FUSE SEATS SYSTEM SECURITY HORN RELAY SHIFT NTERLOCK SYSTEM TO AC INV (HV) RELAY (DIAGRAM 6 OF 7) TRK OPN DCM (HV) FUSE FUSE TRUNK, TAILGATE, FUEL DOORS SYSTEM VIO WIRE VOLTAGE INVERTER ASSEMBLY WARNING, DOOR LOCKS, ANTI-THEFT SYSTEMS SUPPLEMENTAL RESTRAINTS SYSTEM WHT WIRE WHT/BLK WIRE

AIR CONDITIONING SYSTEM ANTI-THEFT SYSTEM ANTI-THEFT SYSTEM BLK WIRE BLU WIRE BRN WIRE CAN I/F COMBINATION METER COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM DISPLAY DRIVER ELECTRONIC POWER STEERING SYSTEM GMTG GMT GRN WIRE GRN/RED WIRE GRN/YEL WIRE GRY WIRE HOT AT ALL TIMES ENGINE MPX-B ROOM R/B 1 FUSE (LEFT SIDE OF ENGINE COMPT) LED DRIVER LT BLU WIRE LT GRN WIRE MJ CLK ITE ETI STB PNK IMO IMI WIRE PNK TOPM ETHO THO MMTG MMT WIRE PNK WIRE POWER DISTRIBUTION SYSTEM POWER MANAGEMENT CONTROL ECU (RIGHT END OF DASH) PSOK SFTD SFTU RED WIRE RELAY ENERGIZED GAUGE FUSE RIGHT COWL SIDE J/B (RIGHT END OF DASH) SHIFT INTERLOCK SYSTEM SHIFT INTERLOCK SYSTEM DASH) SHIFT INTERLOCK SYSTEM SHIFT INTERLOCK SYSTEM SKID CONTROL ECU (W/ ACTUATOR) (LEFT REAR OF ENGINE COMPT) SLP ABFS SLR+ PNK WIRE SP FD RV PNK WIRE SUPPLEMENTAL RESTRAINTS SYSTEM TC EVSW STP TELLTALES VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE