Lexus IS III (2013-2016) main body ecu Wiring diagrams

ALL DR LOCK RELAY BKUP LP RELAY BLU WIRE BRN WIRE CERTIFICATION ECU COMBINATION METER ASSEMBLY D DR UNLOCK RELAY DATA LINK CONNECTOR 3 FUEL LOCK RELAY HEADLIGHT DIMMER SWITCH ASSEMBLY KA (LEFT KICK PANEL) KC (RIGHT END OF DASH) L/D DR P/OUTLET UNLOCK RELAY RELAY LEFT VISOR ASSEMBLY LUGGAGE DOOR OPENING SWITCH ASSEMBLY MAIN BODY ECU MAP LIGHT ASSEMBLY RELAY 2 RELAY 3 REMOTE CLOCK OPERATION ASSEMBLY SWITCH SLIDING ROOF CONTROL ECU (SLIDING ROOF RIGHT GEAR SUB VISOR ASSEMBLY) ASSEMBLY SPIRAL CABLE W/ SENSOR SUB ASSEMBLY (STEERING COLUMN) SPIRAL CABLE W/ SENSOR SUB-ASSEMBLY (UNDER STEERING WHEEL) STEERING LOCK ACTUATOR ASSEMBLY STEERING PAD RADIO SWITCH RECEIVER ASSEMBLY ASSEMBLY STEERING PAD SWITCH ASSEMBLY STEERING WHEEL HEATER CONTROL ASSEMBLY TIRE PRESSURE MONITOR INITIATOR OPTION DRIVER CONNECTOR TIRE PRESSURE WARNING RESET SWITCH (PRESSURE WARNING SWITCH 1) TRUNK OPN RELAY 1 RELAY RELAY W/ FRONT FOG LIGHT W/ NAVIGATION SYSTEM W/O NAVIGATION SYSTEM W/ NETWORK GATEWAY ECU WHT/BLK WIRE WINDSHIELD WIPER SWITCH ASSEMBLY YAW RATE SENSOR

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 GND 1 2 3 4 5 6 7 8 9 DMVR 13 14 15 16 HSSR ADJUST RIGHT RIGHT/ DN SWITCH BDR BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DCTY DMHR DM+R MR- DOWN LEFT UP DRIVER'S DOOR EC+ ECL+ ECL- SELE EXTERIOR LIGHTS OUTER MIRROR SWITCH ASSEMBLY SYSTEM FOOT LIGHT FR DOOR LH FUSE GRN WIRE GRN/RED WIRE GRY WIRE HEATER MIRROR HOT AT ALL TIMES HOT AT ALL TIMES ENGINE ROOM MPX-B FUSE R/B 1 (RIGHT REAR OF ENGINE COMPT) HSRL INTERIOR LIGHTS DEFOGGER SYSTEM SYSTEM LEFT LEFT COWL SIDE J/B (LEFT END OF DASH) LEFT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (LEFT "B" PILLAR) LEFT FRONT SEAT MEMORY SWITCH LEFT OUTER MIRROR CONTROL ECU (LEFT FRONT DOORS) LEFT OUTER REAR VIEW MIRROR ASSEMBLY LEFT/RIGHT LT GRN WIRE MAIN BODY ECU MIRB MIRE MIRROR MIRRORS SYSTEM MIRS MLP MM MSWE MR- ORG/ WIRE PARKING BRAKE SWITCH (BASE OF PARKING BRAKE FOOT LEVER ASSEMBLY) PNK DVC VSSR EC+ WIRE PNK WIRE POSITION RED WIRE RELAY ENERGIZED RET RETRACTOR RH ECU-IG FUSE RIGHT RIGHT COWL SIDE J/B (RIGHT END OF DASH) RIGHT SELECT LEFT MSW SWITCH SENSOR SET- SIG CPUB TRNL TURN UNFOLD FOLD AWAY PNK SWITCH (W/ RETRACTOR) FOLD WIRE UP/DOWN VIO WIRE VSRL WHT WIRE WHT/BLK WIRE YEL WIRE

17 18 SHIELD ANTENNA BACK BLK WIRE BLU WIRE BRN WIRE CA+ CGND SHIELD COMBINATION METER COMPUTER DATA LINES SYSTEM DISP OFF HOOK DISP VOICE FUSE GPS ANTENNA GRN WIRE GRY WIRE GVIF HOT AT ALL TIMES HOT W/ HOT W/ ACC RELAY ENERGIZED ILL ILL INPUT CIRCUIT INSTRUMENT CLUSTER SYSTEM J/C 27 (BEHIND LEFT SIDE OF DASH) J/C 70 (BEHIND RIGHT SIDE OF DASH) LEFT COWL SIDE J/B (LEFT END OF DASH) LEFT STEERING PAD SWITCH LH ECU-IG FUSE LT BLU WIRE LT GRN WIRE MAIN BODY ECU MAIN BODY ECU PKB IND MICRO COMPUTER MIN MIN+ SGND MACC SHIELD MPX MSSL MULTI-MEDIA MODULE RECEIVER ASSEMBLY NCA WIRE ON HOOK ORG/ WIRE PARKING BRAKE SWITCH (TOP OF PARKING BRAKE LEVER) PKB SPD REV PNK WIRE RAD 3 FUSE RED WIRE RH ECU-IG FUSE RIGHT COWL SIDE J/B (RIGHT END OF DASH) RIGHT STEERING PAD SWITCH SEEK SEEK- MODE SHIELD SPIRAL CABLE (UNDER STEERING WHEEL) STEERING PAD SWITCH SWG TV 1 FUSE V+ V- VIO WIRE VMTF VOL (-) W/ LEXUS ENFORM W/O LEXUS ENFORM WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

AGND ALL DR LOCK D DR UNLOCK L/D DR UNLOCK RELAY RELAY RELAY AMP 1 FUSE AMP 2 FUSE BLK WIRE BLU WIRE CERTIFICATION ECU (RIGHT END OF DASH) COMPUTER DATA LINES SYSTEM CRUISE CONTROL, EXTERIOR LIGHTS SYSTEMS D/L FUSE DOME CUT RELAY DOME FUSE DOOR R/R FUSE DOOR F/R FUSE J/B-AM FUSE ELECTRONIC POWER STEERING SYSTEM ENGINE CONTROLS SYSTEM ENGINE SWITCH FROM D/L FUSE (DIAGRAM 3 OF 4) FROM ECU-ACC FUSE (DIAGRAM 4 OF 4) FROM ACC RELAY (DIAGRAM 4 OF 4) FROM ENGINE ROOM J/B 2 (DIAGRAM 2 OF 4) FROM ENGINE ROOM R/B 1 (DIAGRAM 1 OF 4) FUEL LOCK RELAY FUSE GRN WIRE GRY WIRE IGN 2 FUSE INSTRUMENT ANTI-THEFT CLUSTER, SYSTEM EXTERIOR LIGHTS SYSTEMS INSTRUMENT PANEL J/B (LEFT END OF DASH) J/B-B FUSE LT BLU WIRE LT GRN WIRE MAIN BODY ECU MEMORY WARNING SYSTEMS SYSTEMS MEMORY, ELECTRONIC POWER POWER TOPS STEERING SYSTEM SYSTEMS METER NAVIGATION SHIFT SYSTEM INTERLOCK SYSTEM INSTRUMENT CLUSTER SYSTEM NAVIGATION, SOUND SYSTEMS ODS ECU-B FUSE FUSE ORG/ WIRE P/SET F/R FUSE PNK ACCD WIRE POWER POWER WINDOWS WINDOWS SYSTEM SYSTEM RADIO FUSE FUSE RED WIRE RR OBD TI, SHADE FUSE TE FUSE FUSE SEATS SYSTEM SHIFT INTERLOCK SYSTEM SMART HAZ FUSE FUSE STRG IGN 1 LOCK FUSE FUSE FUSE SUPPLEMENTAL RESTRAINTS SYSTEM TO ALL DR LOCK RELAY (DIAGRAM 3 OF 4) TO INSTRUMENT PANEL J/B (DIAGRAM 4 OF 4) VIO WIRE WHT WIRE YEL WIRE

1 FUSE A/C FUSE AIR CONDITIONING SYSTEM AIR CONDITIONING, DEFOGGER SYSTEMS AIR CONDITIONING, MEMORY, NAVIGATION, ELECTRONIC POWER STEERING SYSTEMS AIR CONDITIONING, SEATS, NAVIGATION, SOUND, DEFOGGER, TRANSMISSIONS SYSTEMS ANTI-LOCK BRAKES SYSTEM ANTI-LOCK BRAKES, ELECTRONIC POWER STEERING SYSTEMS BKUP LP FUSE WIPER SW-IG FUSE BKUP LP RELAY BLK WIRE BLU WIRE COMPUTER DATA LINES, NAVIGATION, WARNING SYSTEMS CRUISE CONTROL, TRANSMISSIONS, EXTERIOR LIGHTS SYSTEMS DOOR S/ROOF R/L FUSE FUSE ECU-ACC FUSE FROM CERTIFICATION ECU (DIAGRAM 3 OF 4) FROM ENGINE ROOM J/B 1 (DIAGRAM 1 OF 4) FUSE FUSE FUSE GRN WIRE GRY WIRE INTERIOR LIGHTS, INSTRUMENT CLUSTER SYSTEMS KA (LEFT KICK PANEL) KC (RIGHT KICK PANEL) LT BLU WIRE LT GRN WIRE MAIN BODY ECU MEMORY SYSTEMS NAVIGATION SYSTEM NAVIGATION, SOUND SYSTEMS ORG/ WIRE P/OUTLET 1 FUSE P/OUTLET RELAY P/W FUSE PANEL FUSE TAIL FUSE PNK WIRE POWER INTERIOR WINDOWS, LIGHTS MIRRORS, MEMORY SYSTEMS POWER OUTLET SOCKET ASSEMBLY POWER TOPS SYSTEM POWER TOPS, PASSIVE RESTRAINTS, WARNING POWER WINDOWS SYSTEM RED WIRE RELAY S/HTR F/R S/HTR F/L FUSE FUSE SEATS POWER SYSTEM WINDOWS SYSTEM SEATS SYSTEM SHIFT INTERLOCK SYSTEM TAIL RELAY TO ENGINE ROOM J/B 2 (DIAGRAM 2 OF 4) TO ENGINE ROOM R/B 2 (DIAGRAM 2 OF 4) TO L/D DR UNLOCK RELAY (DIAGRAM 3 OF 4) TO OBD FUSE (DIAGRAM 3 OF 4) TRANSMISSIONS SYSTEM TRLY GND TRUNK OPEN RELAY TRUNK P/SEAT DOOR OPN F/L F/L FUSE FUSE FUSE VIO WIRE WHT WIRE WIPER/WASHER MEMORY SYSTEM SYSTEMS WIPER/WASHER, MIRRORS, POWER TOPS SYSTEMS YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 UP 2 3 5 6 +5 DATA RSSI GND 7 8 LSSR BLK WIRE BLU WIRE BRN WIRE BZR CERTIFICATION ECU (RIGHT REAR QUARTERPANEL) COMPUTER DATA LINES SYSTEM DCTY DOOR CONTROL RECEIVER (UNDER CENTER OF BASE OF REAR WINDOW) DRIVER'S DOOR ECU-IG RH FUSE FR DOOR LH FUSE FR DOOR RH FUSE (RIGHT END OF DASH) GRN WIRE GRY WIRE HOT AT ALL TIMES HOT W/ RH-IG 1 RELAY ENERGIZED IGB KEY LOCK KEY UNLOCK LEFT COWL SIDE J/B (LEFT END OF DASH) LEFT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LEFT FRONT DOOR LOCK ASSEMBLY (DRIVER'S DOOR) LEFT FRONT POWER WINDOW REGULATOR MOTOR (DRIVER'S DOOR) LSW LT BLU WIRE LT GRN WIRE MAIN BODY ECU PCT PLS PNK PNK WIRE PNK WIRE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY PWS COMPUTER DATA LINES SYSTEM VCC RED WIRE RIGHT COWL SIDE J/B RIGHT COWL SIDE J/B (RIGHT END OF DASH) RIGHT FRONT POWER WINDOW REGULATOR MOTOR RIGHT FRONT POWER WINDOW REGULATOR SWITCH ASSEMBLY RSSI RDA SGND SGND KUL KL SSRB UNLOCK DETECTION VCC VIO WIRE W/ MEMORY SEAT W/O MEMORY SEAT WHEELWELL) WIRELESS DOOR LOCK BUZZER WHT WIRE WHT/BLK WIRE YEL WIRE

17 18 SHIELD ANTENNA BACK BLK WIRE BLU WIRE BRN WIRE CA+ CGND SHIELD COMBINATION METER COMPUTER DATA LINES SYSTEM DISP OFF HOOK DISP VOICE FUSE GPS ANTENNA GRN WIRE GRY WIRE GVIF HOT AT ALL TIMES HOT W/ HOT W/ ACC RELAY ENERGIZED ILL ILL INPUT CIRCUIT INSTRUMENT CLUSTER SYSTEM J/C 27 (BEHIND LEFT SIDE OF DASH) J/C 70 (BEHIND RIGHT SIDE OF DASH) LEFT COWL SIDE J/B (LEFT END OF DASH) LEFT STEERING PAD SWITCH LH ECU-IG FUSE LT BLU WIRE LT GRN WIRE MAIN BODY ECU MAIN BODY ECU PKB IND MICRO COMPUTER MIN MIN+ SGND MACC SHIELD MPX MSSL MULTI-MEDIA MODULE RECEIVER ASSEMBLY NCA WIRE ON HOOK ORG/ WIRE PARKING BRAKE SWITCH (TOP OF PARKING BRAKE LEVER) PKB SPD REV PNK WIRE RAD 3 FUSE RED WIRE RH ECU-IG FUSE RIGHT COWL SIDE J/B (RIGHT END OF DASH) RIGHT STEERING PAD SWITCH SEEK SEEK- MODE SHIELD SPIRAL CABLE (UNDER STEERING WHEEL) STEERING PAD SWITCH SWG TV 1 FUSE V+ V- VIO WIRE VMTF VOL (-) W/ LEXUS ENFORM W/O LEXUS ENFORM WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BLU WIRE COMPUTER DATA LINES SYSTEM DIODE (PARK/NEUTRAL POSITION SWITCH ASSEMBLY) (BEHIND LEFT SIDE OF DASH) ECM (ENGINE CONTROL MODULE) (LEFT FRONT OF ENGINE COMPT) ECU-B FUSE FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES HOT W/ INSTRUMENT PANEL J/B (LEFT END OF DASH) J/C 1 (LEFT SIDE OF ENGINE COMPT) J/C 4 (LEFT SIDE OF ENGINE COMPT) KA (LEFT KICK PANEL) KC (RIGHT KICK PANEL) LT BLU WIRE MAIN BODY ECU ORG/ WIRE PARK/ NEUTRAL POSITION QA (LEFT "B" PILLAR) REAR SUNSHADE RELAY (REAR WINDOW SHADE ASSEMBLY) REAR SUNSHADE SWITCH ASSEMBLY RED WIRE REV SHADE RR FUSE SWITCH (RIGHT SIDE OF TRANSMISSION) WHT/BLK WIRE YEL WIRE

11 12 DBE+ DBE- 13 12 FSR- FSR+ 13 22 CANH CANL 2 1 3 PS GPS VPS 30 31 MPX+ MPX- 7 15 6 14 13 11 12 10 VPS GPS PS BGND BSW FSR+ FSR- DIA A/C AMPLIFIER (BEHIND RIGHT SIDE OF DASH) BELT BUCKLE ASSEMBLY) BLK WIRE BLK/GRN WIRE BLK/RED WIRE BLU WIRE BRN WIRE BUCKLE SWITCH CENTER AIR BAG SENSOR (UNDER REAR OF CENTER CONSOLE) CLOCK ASSEMBLY COMBINATION PBLT P/SB METER ASSEMBLY COMPUTER DATA LINES SYSTEM DCTY DOME +B DOOR IND DRIVER'S SEAT BELT IND ECU-IG RH FUSE GAUGE FUSE GRN WIRE GRY WIRE GTX+ GTX- HOT AT ALL TIMES ENGINE ROOM R/B 1 (RIGHT REAR OF ENGINE COMPT) IG 2 IG+ IG+ INPUT CIRCUIT INTEGRATION CONTROL, PANEL ASSEMBLY LCD (MULTI) LEFT FRONT SEAT INNER BELT ASSEMBLY (IN DRIVER'S SEAT BELT BUCKLE ASSEMBLY) LT BLU WIRE LT GRN WIRE MAIN BODY ECU MICRO COMPUTER MPX+ MPX- MPX-B FUSE NETWORK GATEWAY ECU (RIGHT END OF DASH) OCCUPANT DETECTION SENSOR ORG/ WIRE PASSIVE RESTRAINT SYSTEM PBEW PBEW PNK PNK WIRE PNK WIRE POWER SUPPLY CIRCUIT RED WIRE RELAY ENERGIZED RIGHT COWL SIDE J/B (RIGHT END OF DASH) RIGHT COWL SIDE J/B (RIGHT END OF DASH) COMPUTER DATA LINES SYSTEM RIGHT FRONT SEAT INNER BELT ASSEMBLY (IN FRONT PASSENGER'S SEAT W/O W/ NAVIGATION NAVIGATION WHT WIRE YEL WIRE

-SR -SL +SR +SL AIR BAG SENSOR ASSEMBLY (UNDER CENTER CONSOLE) BBL+ BCL+ BDL- BLK WIRE BLU WIRE BRN WIRE BUCKLE SWITCH CANL PAON COMPUTER DATA LINES SYSTEM DK DK FUSE GRN WIRE GRY WIRE GSW HOT AT ALL TIMES INSTRUMENT PANEL J/B (LEFT END OF DASH) INSTRUMENT PANEL PASSENGER W/O DOOR AIR BAG ASSEMBLY KB (UNDER CENTER CONSOLE) KC (RIGHT KICK PANEL) LBE+ LSP+ BBL+ BBL- LBE- LSP- LEFT FRONT SEAT AIR BAG ASSEMBLY (IN OUTBOARD SIDE OF LEFT FRONT SEAT BACK) LEFT FRONT SEAT INNER BELT ASSEMBLY (INBOARD SIDE OF LEFT FRONT SEAT) LEFT REAR AIR BAG SENSOR (IN LEFT "C" PILLAR) LEFT SIDE AIR BAG SENSOR ASSEMBLY LEFT SIDE DOOR AIR BAG SENSOR (LEFT FRONT DOOR) LT BLU WIRE MAIN BODY ECU ODS FUSE ORG/ WIRE P- P+ D+ D- P-AB GSW PK+ PK- PASSIVE RESTRAINTS SYSTEM QA (LEFT "B" PILLAR) RED WIRE SEAT POSITION AIR BAG SENSOR SFL- SRL- VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED WIRE