Lexus LS IV (2006-2012) engine controls system Wiring diagrams

13 22 CANH CANL 22 21 CANL CANH 25 26 CANL CANH ACAN ACCR BLK WIRE BLU WIRE BRN WIRE CANN CANP CENTER AIR BAG ECU (UNDER CENTER CLTE CLTS CLTB PCTY DISPLAY, NAVIGATION MODULE DISPLAY ENGINE CONTROLS SYSTEM FLOOR CONSOLE) FRONT CONTROLLER (RIGHT FRONT OF ENGINE COMPT) FUSE GRN WIRE GRY WIRE HEADLIGHTS SYSTEM HOT AT ALL TIMES HZCT INTEGRATION CONTROL, PANEL ASSEMBLY MAIN BODY ECU (LEFT END OF DASH) NAVIGATION SYSTEM ORG/ WIRE PASSENGER SIDE J/B (RIGHT END OF DASH) PKBO PNK WIRE POWER DISTRIBUTION SYSTEM POWER DISTRIBUTION SYSTEM ENGINE CONTROLS SYSTEM STARTING/CHARGING SYSTEM RCTY PANL RED WIRE RIGHT FRONT POWER SEAT CONTROL ECU, SWITCH (UNDER FRONT PASSENGER'S SEAT) RIGHT REAR DOOR CONTROL ECU (INSIDE RIGHT REAR DOOR) STSW SKSW PNK WIRE TIRE PRESSURE WARNING ECU (RIGHT END OF DASH) VIO WIRE W/ MULTI DISPLAY W/O MULTI DISPLAY WHT WIRE

BLK WIRE BLK/WHT WIRE BLOCK J/B 3 (RIGHT SIDE OF DASH) BLU WIRE BRN WIRE CENTER JUNCTION CENTER JUNCTION BLOCK J/B 3 (RIGHT SIDE OF DASH) CENTER JUNCTION BLOCK J/B 5 (LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM CRUISE CONTROL MAIN SWITCH ASSEMBLY DRIVER SIDE J/B (LEFT END DRIVER SIDE J/B (LEFT END OF DASH) ENGINE CONTROLS SYSTEM ENGINE ROOM R/B 2 (RIGHT SIDE OF ENGINE COMPT) FUSE GRN WIRE HOT IN ON OR START IGCT 2 FUSE IGCT 2 RELAY IGCT RELAY J/C LT GRN WIRE OF DASH) ON- MODE OFF ORG/ WIRE RED WIRE SFTD SFTU SPIRAL CABLE SUB-ASSEMBLY (IN STEERING COLUMN) STEERING PAD SWITCH ASSEMBLY W/ MODULATOR STEERING SWITCH ECU VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

+B CANL CANH COMPUTER DATA LINES SYSTEM +BM (LEFT FRONT OF ENGINE) 5 26 34 27 35 7 6 19 +BS MJ SP 1 12 11 10 STP 26 14 1 12 8 10 11 20 19 18 2 3 33 FD 3 1 4 16 15 5 35 6 17 20 19 22 21 18 23 MREL BATT IGSW CANL CANH 30 1 2 6 SPD 7 3 BATT MREL ACCELERATOR POSITION SENSOR ASSEMBLY (LEFT SIDE OF DASH) BLK WIRE BLK/WHT WIRE BLU WIRE BLU/YEL WIRE BRN WIRE C/OPN RELAY CCS EC COMPUTER DATA LINES SYSTEM ECU-IG FUSE EFI MAIN 2 RELAY EFI MAIN EFI FUSE MAIN RELAY EFI- MAIN 2 FUSE ELECTRONICALLY CONTROLLED TRANSMISSION SOLENOID (ON TRANSMISSION ASSEMBLY) ENGINE CONTROLS SYSTEM ENGINE ROOM J/B 2 (RIGHT SIDE OF ENGINE COMPT) ENGINE ROOM R/B 2 (RIGHT SIDE OF ENGINE COMPT) ETA M+ M- ETCS FUSE GRN WIRE HOT AT ALL TIMES HOT IN ON OR START HYBRID VEHICLE CONTROL ECU (LEFT FRONT OF ENGINE COMPT) IGCT 1 FUSE LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE PNK WIRE PNK/BLU WIRE RED WIRE RED/YEL WIRE STPU SFTD THO VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BLK/WHT WIRE BLOCK J/B 3 (RIGHT SIDE OF DASH) BLU WIRE BRN WIRE CENTER JUNCTION CENTER JUNCTION BLOCK J/B 3 (RIGHT SIDE OF DASH) CENTER JUNCTION BLOCK J/B 5 (LEFT SIDE OF DASH) CRUISE CONTROL MAIN SWITCH ASSEMBLY DRIVER SIDE J/B (LEFT END DRIVER SIDE J/B (LEFT END OF DASH) ENGINE CONTROLS SYSTEM ENGINE ROOM R/B 2 (RIGHT SIDE OF ENGINE COMPT) FUSE GRN WIRE HOT AT ALL TIMES HOT IN ON OR START IGCT 2 FUSE IGCT 2 RELAY IGCT RELAY J/C NCA WIRE OF DASH) ON- +RES OFF PARK/NEUTRAL POSITION SWITCH (RIGHT SIDE OF TRANSMISSION) RED WIRE SFTD SFTU SPIRAL CABLE SUB-ASSEMBLY (IN STEERING COLUMN) THROTTLE BODY ASSEMBLY (ON THROTTLE BODY) VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 HORL HORH 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 S/M WIG AIR CONDITIONING SYSTEM BLK WIRE BLU WIRE BODY ECU CIRCUIT BRN WIRE CANP CANN FMIG FFOG HRLY HEAD LIN DEFOGGER SYSTEM DGS DGSE DOOR LOCKS SYSTEM COOLING FANS SYSTEM ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM INSTRUMENT CLUSTER SYSTEM STARTING/CHARGING SYSTEM ENGINE ROOM J/B 2 (RIGHT SIDE OF ENGINE COMPT) FR CTRL ALT FUSE FRWA S/S +2 PNK WIRE FUSE GRN WIRE HDLO HEADLIGHTS SYSTEM HLHR HLHL HORNS SYSTEM HOT AT ALL TIMES ECU-B FUSE HOT AT ALL TIMES FR CTRL BAT FUSE HOT IN ON OR START LT BLU WIRE LT GRN WIRE MOL MOPS ALTL WLVL BZR MOLE ORG/ WIRE PNK CRAL SIDL WIRE PNK WIRE PRS SG CRAR SIDR RDEF FDEF RED WIRE SH- ALTB TME TM HDCY VIO WIRE WHT WIRE WHT/BLK WIRE WIPER/WASHER SYSTEM WIPER/WASHER SYSTEM DOOR LOCKS SYSTEM YEL WIRE

1 2 LOIL GND 1 5 11 20 10 PNK BATB ALTB MOPS MOLE MOL WIRE 5 1 2 3 4 FMIG 8 9 COMPUTER DATA LINES SYSTEM CANL CANH ABS IND. AFS OFF IND BLK WIRE BLK/ WHT WIRE BLU WIRE BRAKE FLUID LEVEL WARNING SWITCH (BRAKE MASTER CYLINDER RESERVOIR BRAKE HOLD IND BRAKE IND BRN WIRE CENTER JUNCTION BLOCK J/B 4 (RIGHT SIDE OF DASH) CENTER JUNCTION BLOCK J/B 5 (LEFT SIDE OF DASH) CHARGE IND CLOCK COMBINATION METER COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM CANP CANN CRUISE IND DOME FUSE DOOR IND DRIVER SIDE J/B (LEFT END OF DASH) DRIVER'S ELECTRONICALLY CONTROLLED BRAKE IND ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM EXTERIOR LIGHTS SYSTEM ENGINE OIL LEVEL SENSOR (LOWER RIGHT SIDE OF ENGINE) ENGINE OIL PRESSURE SWITCH ASSEMBLY (LOWER LEFT FRONT OF ENGINE) EXTERIOR LIGHTS SYSTEM NAVIGATION SYSTEM FR CTRL ALT FUSE FR CTRL BAT FUSE INJ FUSE P-J/B FUSE FRONT FOG IND FUSE GRN WIRE GRN/ LT WIRE HEAD IND TAIL IND HEIGHT HIGH IND HIGH BEAM AUTO IND HIGH BEAM IND HOLD IND HOT AT ALL TIMES HOT AT ALL TIMES DRIVER SIDE J/B (LEFT END MPX-B 2 FUSE OF DASH) HOT W/ P ACC RELAY ENERGIZED PASSENGER SIDE J/B (RIGHT END OF DASH) IND J/C LBL LED DRIVER LEFT TURN IND LIGHT ECU LKA IND LT BLU WIRE LT GRN WIRE MALFUNCTION INDICATOR LAMP MASTER IND MICRO COMPUTER MPU MPX+B I/F MPXB P-ACC FUSE PARK IND PASSENGER SIDE J/B (RIGHT END OF DASH) PCS IND PNK ENGINE CONTROLS SYSTEM WIRE PNK WIRE POWER POWER STEERING RED WIRE RELAY ENERGIZED RELAY ENERGIZED ENGINE ROOM J/B 2 (RIGHT SIDE OF ENGINE COMPT) E/G RM ECU-B FUSE RESET+ RIGHT TURN IND RING ILLUMINATION SEAT BELT IND SHIFT INTERLOCK SYSTEM SKID CONTROL ECU ASSEMBLY (LEFT REAR OF ENGINE COMPT) SLIP IND SLIP OFF IND SRS IND SUPPLY TFT DISPLAY IC TIRE PRESSURE IND TRIP TRIP SWITCH TX-1 TX+1 VIO WIRE WATER TEMP HOT IND WHT WIRE WHT/BLK WIRE YEL WIRE

ABS MAIN 4 FUSE AIR CONDITIONING SYSTEM AIR EXTERIOR CONDITIONING, LIGHTS DOOR LOCKS, SYSTEM POWER WINDOWS SYSTEMS AIR SUS FUSE AMP FUSE SECURITY FUSE ANTI-LOCK BRAKES SYSTEM ANTI-THEFT NAVIGATION, SYSTEM SOUND SYSTEMS B FAN RLY FUSE BATT BATT FAN 2 FAN 1 RELAY RELAY BATTERY BLK WIRE BLU WIRE D DOOR 1 FUSE HAZ FUSE D DOOR 2 FUSE D RR DOOR FUSE DC/DC FUSE DEFOG FUSE FUSE DEFOGGER SYSTEM E/G E/G R/B BATT FUSE E/G R/B DC/DC FUSE E/G RM 1 FUSE ELECTRONIC POWER STEERING SYSTEM ELECTRONIC SUSPENSION SYSTEM ENGINE CONTROLS SYSTEM EPS FUSE FROM FUSIBLE LINK BLOCK ASSEMBLY 2 (DIAGRAM 1 OF 6) FUSE FUSIBLE LINK MAIN BLOCK FUSE ASSEMBLY GRN WIRE GRY WIRE HTR FUSE LH J/B BATT FUSE LH J/B DC/DC FUSE LUG J/B BATT FUSE LUG J/B DC/DC FUSE NOISE FILTER NOISE FILTER (GHOST BUSTER) (RIGHT REAR OF LUGGAGE COMPT) OIL E/G EFI PMP RM B FUSE FUSE FUSE ORG/ WIRE P J/B P J/B H LP FAN 1 DC/DC CLN FUSE FUSE FUSE PNK WIRE POWER WINDOWS, DOOR LOCKS SYSTEMS PTC HTR FUSE REAR JUNCTION BLOCK ECU RED WIRE RR A/C FUSE RR ECU B FUSE E PKB FUSE SHIFT INTERLOCK SYSTEM SHIFT INTERLOCK, EXTERIOR LIGHTS, TRANSMISSIONS, ANTI-LOCK BRAKES, SYSTEMS STOP FUSE STOP LP 1 FUSE STOP LP 2 FUSE STR LOCK FUSE TAIL FUSE TO DRIVER SIDE J/B (DIAGRAM 3 OF 6) TO ENGINE ROOM ENGINE J/B 2 CONTROLS, (DIAGRAM TRANSMISSIONS 5 OF 6) SYSTEMS TO ENGINE ROOM J/B 2 (DIAGRAM 5 OF 6) TO ENGINE ROOM R/B 2 (DIAGRAM 2 OF 6) TO ENGINE ROOM R/B 4 (DIAGRAM 2 OF 6) TO FUSIBLE LINK BLOCK ASSEMBLY 1 (DIAGRAM 1 OF 6) TO LUGGAGE ROOM J/B (DIAGRAM 4 OF 6) TO PASSENGER SIDE J/B (DIAGRAM 2 OF 6) TO PASSENGER SIDE J/B (DIAGRAM 3 OF 6) VGRS FUSE EFI 1 FUSE WHT WIRE WIPER/ COOLING WASHER FANS SYSTEM SYSTEM YEL WIRE

ABS AIR CONDITIONING, SEATS, INTERIOR LIGHTS, POWER WINDOWS SYSTEMS AMP FUSE ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/WHT WIRE BLU WIRE CENTER JUNCTION BLOCK J/B 4 (RIGHT SIDE OF DASH) CRUISE CONTROL, ANTI-LOCK BRAKES, ELECTRONIC POWER STEERING SYSTEMS DC- DOOR 1 FUSE DOOR 2 FUSE EFI EFI MAIN FUSE EFI MAIN RELAY ENGINE CONTROLS SYSTEM FROM FUSIBLE LINK BLOCK ASSEMBLY 1 (DIAGRAM 1 OF 6) FUSE GRY WIRE IGCT RELAY LGLB MAIN BODY ECU MPX-B FUSE MPXB NAVIGATION, SOUND SYSTEMS ORG/ WIRE P RR DOOR FUSE P-D/C CUT FUSE PASSENGER SIDE J/B (RIGHT END OF DASH) POWER SWITCH PTC HTR 1 RELAY PTC HTR 1 FUSE PTC HTR 3 FUSE PTC HTR 3 RELAY RADIO 1 FUSE REAR JUNCTION BLOCK ECU RED WIRE RELAY RR MPX B 1 FUSE RR MPX-B 2 FUSE SEATS SYSTEM SEATS, NAVIGATION, INTERIOR LIGHTS, AIR CONDITIONING, DOOR LOCKS SYSTEMS SOUND SOUND SYSTEMS SYSTEMS TO ENGINE ROOM J/B 2 (DIAGRAM 5 OF 6) WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 IG BLK WIRE BLU WIRE ECU-IG FUSE ENGINE CONTROLS SYSTEM FROM FROM LUGGAGE ROOM J/B (DIAGRAM 4 OF 6) FROM RR ACC RELAY AC (DIAGRAM 4 OF 6) FUSE IGN FUSE INJ FUSE INV RELAY JUNCTION LT BLU WIRE LUGGAGE ROOM J/B (LEFT SIDE OF LUGGAGE COMPT) MAIN BODY ECU NAVIGATION, SUPPLEMENTAL RESTRAINTS SYSTEMS P-J/B FUSE PNK WIRE POWER OUTLET RED WIRE RELAY VIO WIRE VOLTAGE INVERTER ASSEMBLY W/ 5 SEATER, OTTOMAN W/O 5 SEATER, OTTOMAN WHT WIRE WHT/BLK WIRE

+B BATT BLK WIRE BLK/WHT WIRE BLU WIRE BLU/RED WIRE BRN WIRE CAN (+) COMPUTER DATA LINES SYSTEM CONSOLE SWITCH E/G ECU-IG FUSE EFI FUSE EFI MAIN 2 RELAY EFI MAIN FUSE EFI MAIN RELAY EFI- MAIN 2 FUSE ELECTRONICALLY CONTROLLED TRANSMISSION PATTERN SELECT SWITCH ENGINE CONTROLS SYSTEM ENGINE ROOM J/B 2 (RIGHT SIDE OF ENGINE COMPT) ENGINE ROOM R/B 2 (RIGHT SIDE OF ENGINE COMPT) ETCS FUSE FUSE GRN WIRE GRN/RED WIRE GRN/YEL WIRE HOT AT ALL TIMES HOT IN ON OR START J/B 4 (RIGHT SIDE OF DASH) MPX PASSENGER SIDE J/B (RIGHT END OF DASH) PNK WIRE RED WIRE STARTING/ CHARGING SYSTEM STP STA TRANSMISSION CONTROL MODULE (LEFT SIDE OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE YEL WIRE